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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

1.2 Topics in FY2016
In fiscal year 2016, the International Union of Pure and Applied Chemistry (IUPAC) officially approved the name (nihonium) andchemical symbol (Nh) proposed earlier this year for element 113 by a research group led by Group Director Kosuke Morita, ResearchGroup for Superheavy Element. A ceremony to commemorate the naming of element 113 as “nihonium” was held at the Japan Academy inTokyo on March 14, 2017, with His Imperial Highness the Crown Prince in attendance.
Five months operation was achieved as had been planned at the beginning of FY2016. The number of RIBF users from home andabroad was the highest ever. RIBF utilization rate exceeding 70% has been maintained.
A key development in accelerator technology was achieved by the Accelerator Group, whereby the use of new “graphene” carbon foils
has enabled RIBF to reach an unprecedented, worldwide record in the intensity of 50 pnA for a 238U beam.

Year

Date
New appointment

Apr. 1

Director of Research Instruments Group: Hideki UENO
New appointment

Sep. 1

2016

Topics in Management

Team Leader of Slow RI Data Team: Toshiyuki SUMIKAMA

2017

Oct. 31

Step down from the position of Deputy Director of RNC: Tetsuo HATSUDA

Dec. 5

Final Report of the former Associate Chief Scientist, Takashi NAKATSUKASA

Jan. 30

Research Review of the Chief Scientist, Tetsuo HATSUDA

2. Finances
As mentioned in “1.2 Administrative Topic in FY2016”, RNC executed five months of RIBF operation. A transition of the RNC
budget for the past four years is shown in following graph.
Million Yen

3,500
3,000
2,500
2,000

3005

3060
2986
2800

1,500
1,000
500
0
2013

2014

2015

- 298 -

2016

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

3. Staffing
At the start of FY 2016, there were 187 personnel affiliated with RNC and 376 researchers visiting RNC for research purpose. The
following graphs show a breakdown of personnel into six categories as of April 1, 2016, and a transition of the number of each category.

78

Permanent Researcher

44

Contract Researcher

24

Technical staff

18

376

Special Postdoctoral Researcher
Junior Research Associate

19

External researcher

FY2016700
External researcher
600
500

Junior Research Associate

400

Special Postdoctoral
Researcher

300

Technical staff
200
Contract Researcher

1000Permanent Researcher
2013

2014

2015

2016

4. Research publication
The number of papers published annually from RNC is shown graphically using the data obtained from Thomson Reuters’ Web of
Science Documents.

Source Documents

400
300
200
100
0
2013

2014

2015

Publication Year- 299 -

2016

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

Citation analysis for the past four years
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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESTheoretical Research Division
Quantum Hadron Physics Laboratory
1. Abstract
Atomic nuclei are made of protons and neutrons bound by the exchange of pion and other mesons. Also, protons and neutrons are
made of quarks bound by the exchange of gluons. These strong interactions are governed by the non-Abelian gauge theory called thequantum chromodynamics (QCD). On the basis of theoretical and numerical analyses of QCD, we study the interactions between the
nucleons, properties of the dense quark matter realized at the center of neutron stars, and properties of the hot quark-gluon plasma realized
in the early Universe. Strong correlations common in QCD and cold atoms are also studied theoretically to unravel the universal features ofthe strongly interacting many-body systems. Developing perturbative and non-perturbative techniques in quantum field theory and string
theory are of great importance not only to solve gauge theories such as QED and QCD, but also to find the theories beyond the standard
model of elementary particles. Various theoretical approaches along this line have been attempted.

2. Major Research Subjects(1) Perturbative and non-perturbative methods in quantum field theories(2) Theory of spontaneous symmetry breaking(3) Lattice gauge theory(4) QCD under extreme conditions(5) Nuclear and atomic many-body problems

3. Summary of Research Activity(1) Perturbative and non-perturbative methods in quantum field theories(1-1) 10th order QED calculation and the lepton anomalous magnetic moments
First preliminary value of the tenth-order QED contribution to the electron anomalous magnetic moment ae=(g-2)/2 was reported by us in
2012. Since then, we have been improving and establishing its accuracy: We reevaluated the most difficult and large set of the Feynman
diagrams by using advanced techniques of numerical calculation especially suitable to RIKEN’s supercomputer. As a result, we haveobtained precise values for the eighth- and tenth-order terms. Assuming the validity of the standard model, it leads to the world-best valueof the fine-structure constant Ƚ-1(ae)=137.035 999 1570(29)(27)(18)(331), where uncertainties are from the eighth-order term, tenth-orderterm, hadronic and electroweak terms, and the experimental measurement of ae. This is the most precise value of Ƚ available at present in
the world and provides a stringent constraint on possible theories beyond the standard model.
(1-2) Picard–Lefschetz theory and the sign problem
Understanding strongly-correlated quantum field theories and many-body systems has been one of the ultimate goals in contemporary
physics. Exact diagonalization of a Hamiltonian provides us with complete information on the system; however, it usually requires the huge
computational cost and is limited to small systems. For large systems, numerical simulation on discretized spacetime lattice with quantum
Monte Carlo method is a powerful ab initio tool based on the importance sampling. In many quantum systems of great interest, however, it
suffers from the so-called sign problem; large cancellation occurs between positive and negative quantities to obtain physical signals, sothat the computational time grows exponentially with the system size. So far, many attempts have been proposed overcome the sign
problem, which include the two promising candidates, the complex Langevin method and the Lefschetz-thimble method. In particular, theLefschetz-thimble approach is a generalization of the steepest descent method for multiple oscillatory integrals. In the past few years, wehave studied extensively the mathematical basis of the Lefschetz-thimble method as well as its practical applications to quantum systems
such as the real-time path integral for quantum tunneling, zero-dimensional bosonic and fermionic models, the one-site Hubbard model,
and Polyakov-loop effective models for QCD. We have shown that the interference among multiple Lefschetz thimbles is important toreproduce the general non-analytic behavior of the observables as a function of the external parameter. Such an interference is a key tounderstand the sign problem of finite-density QCD.
(1-3) Functional renormalization groupx
BEC-BCS crossover in cold fermionic atoms
We have developed a fermionic functional renormalization group (FRG) and applied this method to describe the superfluid phase transitionof the two-component fermionic system with an attractive contact interaction. The connection between the fermionic FRG approach and theconventional Bardeen-Cooper-Schrieffer (BCS) theory with Gorkov and Melik-Barkhudarov (GMB) correction was clarified in the weakcoupling region by using the renormalization group flow of the fermionic four-point vertex with particle-particle and particle-hole
scatterings. To go beyond the BCS+GMB theory, coupled FRG flow equations of the fermion self-energy and the four-point vertex are
studied under an Ansatz concerning their frequency/momentum dependence. We found that the fermion self-energy turns out to be
substantial even in the weak coupling regime, and the frequency dependence of the four-point vertex is essential to obtain the correct
asymptotic-ultraviolet behavior of the flow for the self-energy. The superfluid transition temperature and the associated chemical potential
were evaluated in the region of negative scattering lengths.
x
Tricritical point of the superconducting transition
The order of the phase transition in the Abelian Higgs model with complex scalar fields became of interest because of the analyses of the
spontaneous symmetry breaking due to radiative corrections in 3+1 dimensions, and of a superconductor near the critical point with thedimensionally reduced Ginzburg-Landau theory. Indeed, the fluctuations of the gauge field were of great importance and may even turn thesecond-order transition to first-order at least for strongly type-I superconductors. We analyzed the order of the superconducting phase
traQVLWLRQYLDWKHIXQFWLRQDOUHQRUPDOL]DWLRQJURXSDSSURDFK:HGHULYHGIRUWKHILUVWWLPHIXOO\DQDO\WLFH[SUHVVLRQVIRUWKHȕ functions of
the charge and the self-coupling in the Abelian Higgs model with N-component scalar field in d = 3 dimensions. The result supports theexistence of two charged fixed-points: an infrared (IR) stable fixed point describing a second-order phase transition and a tricritical fixed- 310 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

point controlling the region of the parameter space that is attracted by the former one. It was found that the region separating first andsecond-order transitions can be uniquely characterized by the critical Ginzburg-/DQGDXSDUDPHWHUțc §¥IRU1 xChiral dynamics under strong magnetic field
The magnetic field is not only interesting as a theoretical probe to the dynamics of QCD, but also important in cosmology and astrophysics:
A class of neutron stars called magnetars has a strong surface magnetic field of order 1010 T while the primordial magnetic field in early
Universe is estimated to be even as large as Ң 1019 T. In non-central heavy-ion collisions at RHIC and LHC, a magnetic field of the strengthҢ 1015 T perpendicular to the reaction plane could be produced and can have impact on the thermodynamics and transport properties of thequark-gluon plasma. We investigated the quark-meson model in a magnetic field using the functional renormalization group equation
beyond the local-potential approximation. We considered anisotropic wave function renormalization for mesons in the effective action,
which allows us to investigate how the magnetic field distorts the propagation of neutral mesons. We found that the transverse velocity ofmesons decreases with the magnetic field at all temperatures. Also, the constituent quark mass is found to increase with magnetic field,
resulting in the crossover temperature that increases monotonically with the magnetic field.
(1-4) Emergent spacetime
In quantum field theories, symmetry plays an essential and exceptional role. Focusing on some proper symmetry and delving into its
meaning have been proven to be one of the most fruitful strategies. A recent example is the SO(2, 4) symmetry in AdS/CFT
correspondence which leads to unexpected connection between gravity and gauge theory defined in different dimensions. We offer
another example of quantum field theory where symmetry plays a central role and reveals interesting phenomena: Our focal point is theglobal conformal symmetry in two dimensional conformal field theory (2d CFT), which is homomorphic to SL(2, R). We have shown that
2d CFT admits a novel quantization which we call dipolar quantization. Usually the study of the quantum field theory starts by defining thespacetime where the field is situated. On the other hand, in our case, we first obtain quantum system and then the nature of spacetime
emerges. This is in accordance with the general ideas of emergent spacetime such as those discussed in matrix models.
(2) Theory of spontaneous symmetry breaking(2-1) Dispersion relations of Nambu-Goldstone modes at finite temperature and density
We clarified the dispersion relations of Nambu-Goldstone (NG) modes associated with spontaneous breaking of internal symmetries atfinite temperature and/or density. We showed that the dispersion relations of type-A and type-B NG modes are linear and quadratic in
momentum, whose imaginary parts are quadratic and quartic, respectively. In both cases, the real parts of the dispersion relations are larger
than the imaginary parts when the momentum is small, so that the NG modes can propagate for long distances. We derived the gap formulafor NG modes in the presence of explicit symmetry breaking. We also discussed the gapped partners of type-B NG modes, when type-Aand type-B NG modes coexist.
(2-2) Effective field theory for spacetime symmetry breaking
We studied the effective field theory for spacetime symmetry breaking from the local symmetry point of view. By gauging spacetime
symmetries, the identification of Nambu-Goldstone (NG) fields and the construction of the effective action were performed based on the
breaking pattern of diffeomorphism, local Lorentz, and isotropic Weyl symmetries as well as the internal symmetries including possible
central extensions in nonrelativistic systems. Such a local picture provides a correct identification of the physical NG fields, while thestandard coset construction based on global symmetry breaking does not. We also revisited the coset construction for spacetime symmetry
breaking: Based on the relation between the Maurer-Cartan one-form and connections for spacetime symmetries, we classified the physicalmeanings of the inverse Higgs constraints by the coordinate dimension of broken symmetries. Inverse Higgs constraints for spacetime
symmetries with a higher dimension remove the redundant NG fields, whereas those for dimensionless symmetries can be further classified
by the local symmetry breaking pattern.
(2-3) Nambu-Goldstone modes in dissipative systems
Spontaneous symmetry breaking (SSB) in Hamiltonian systems is a universal and widely observed phenomena in nature, e.g., theelectroweak and chiral symmetry breakings, superconductors, ferromagnets, solid crystals, and so on. It is also known that the SSB
occurs even in dissipative systems such as reaction diffusion system and active matters. The translational symmetry in the reaction
diffusion system is spontaneously broken by a spatial pattern formation such as the Turing pattern in biology. The rotational symmetry is
spontaneously broken in the active hydrodynamics which describes collective motion of biological organisms. We found that there exist
two types of NG modes in dissipative systems corresponding to type-A and type-B NG modes in Hamiltonian systems. By taking the O(N)scalar model obeying a Fokker-Planck equation as an example, we have shown that the type-A NG modes in the dissipative system are
diffusive modes, while they are propagating modes in Hamiltonian systems. We pointed out that this difference is caused by the existenceof two types of Noether charges, QĮR and QĮA : QĮR are symmetry generators of Hamiltonian systems, which are not generally conserved indissipative systems. QĮA are symmetry generators of dissipative systems described by the Fokker-Planck equation and are conserved. We
found that the NG modes are propagating modes if QĮR are conserved, while those are diffusive modes if they are not conserved.
(3) Lattice gauge theory(3-1) Hadron interactions from lattice QCD
One of the most important goals in nuclear physics is to determine baryon-baryon interactions directly from QCD. To achieve this goal, the
HAL QCD Collaboration has been developing a novel lattice QCD formulation (HAL QCD method) and performing first-principles
numerical simulations. We have calculated the spin-orbit forces for the first time from QCD by the HAL QCD method, and have observed
the attraction in the 3P2 channel related to the P-wave neutron superfluidity in neutron star cores. Our calculation of the N-Ȑinteraction
shows that this system is bound in the 5S2 channel. We have shown that the Ȑ-Ȑ LQWHUDFWLRQLQWKHVSLQ-singlet channel is in the unitary
region where the scattering length becomes large. Three-nucleon forces have been calculated for several heavy quark masses. Our latticecalculations was extended to the heavy quark systems, e.g. the exotic tetraquark, Tcc and Tcs. Properties of the light and medium-heavy
nuclei (4He, O, 40Ca) have been calculated by combining the nuclear many-body techniques and the nuclear forces obtained from lattice
QCD. Also, we have theoretically and numerically shown that the Luscher’s method traditionally used in studying the hadron-hadroninteractions does not lead to physical results for baryon-baryon interactions unless the lattice volume is unrealistically large, so that the
HAL QCD method is the only reliable approach to link QCD to nuclear physics.

- 311 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESAs a part of the High Performance Computing Infrastructure (HPCI) Project 5, we have completed the generation of (2+1)-flavor full QCD
configurations with a large box, V=(8 fm)3, and with nearly physical pion mass, 145MeV, on the 10Pflops super computer “K”. We are
currently in the process of calculations of baryon-baryon interactions using these configurations.
(3-2) Momenta and Angular Momenta of Quarks and Gluons inside the Nucleon
Determining the quark and gluon contributions to the spin of the nucleon is one of the most challenging problems in QCD bothexperimentally and theoretically. Since the quark spin is found to be small (Ң 25% of the total proton spin) from the global analysis of deep
inelastic scattering data, it is expected that the rest should come from the gluon spin and the orbital angular momenta of quarks and gluons.
We made state-of-the-art calculations (with both connected and disconnected insertions) of the momenta and the angular momenta ofquarks and gluons inside the proton. The u and d quark momentum/angular momentum fraction extrapolated to the physical point is foundWR EH      ZKLOH WKH VWUDQJH TXDUN PRPHQWXPDQJXODU PRPHQWXP IUDFWLRQ LV      DQG WKDW RI WKH JOXRQ LV     7KLV LPSOLHV WKDW WKH TXDUN VSLQ FDUULHV D IUDFWLRQ RI    RI WKH SURWRQ VSLQ $OVR ZH IRXQG WKDW WKH quark orbital
angular momentum, which turned out to be dominated by the disconnected insertions, constitutes 0.47(13) of the proton spin.
(4) QCD under extreme conditions(4-1) Production and Elliptic Flow of Dileptons and Photons in the semi-Quark Gluon Plasma
A notable property of peripheral heavy-ion collisions at RHIC and LHC is the elliptic flow which is a measure of the transfer of initial
spatial anisotropy to momentum anisotropy. Both the PHENIX experiment at RHIC and the ALICE experiment at LHC have announced apuzzling observation; a large elliptic flow for photons, comparable to that of hadrons. We considered the thermal production of dileptons
and photons at temperatures above the QCD critical temperature (Tc) on the basis of semi-QGP, a theoretical model for describing thequark-gluon plasma (QGP) near Tc. With realistic hydrodynamic simulations, we have shown that the strong suppression of photons insemi-QGP due to the inhibition of colored excitations tends to bias the elliptical flow of photons to that generated in the hadronic phase.
This increases the total elliptic flow for thermal photons significantly towards the experimental data.
(4-2) Deriving relativistic hydrodynamics from quantum field theory
Hydrodynamics describes the spacetime evolution of conserved quantities, such the energy, the momentum, and the particle number. It
does not depend on microscopic details of the system, so that it can be applied to many branches of physics from condensed matter tohigh-energy physics. One of the illuminating examples is the recent success of relativistic hydrodynamics in describing the evolution of
QGP created in heavy-ion collisions. Inspired by the phenomenological success of relativistic hydrodynamics in describing QGP,
theoretical derivations of the relativistic hydrodynamics have been attempted on the basis of the kinetic theory, the fluid/gravity
correspondence, the non-equilibrium thermodynamics, and the projection operator method. In our study, a most microscopic andnon-perturbative derivation of the relativistic hydrodynamics from quantum field theory was given on basis of the density operator withlocal Gibbs distribution at initial time. Performing the path-integral formulation of the local Gibbs distribution, we derived the generating
functional for the non-dissipative hydrodynamics microscopically. Moreover, we formulated a procedure to evaluate dissipative
corrections.
(4-3) Hadron-quark crossover in cold and hot neutron stars
We studied bulk properties of cold and hot neutron stars (NS) on the basis of the hadron-quark crossover picture where a smooth transition
from the hadronic phase to the quark phase takes place at finite baryon density. By using a phenomenological equation of state (EOS)“CRover” which interpolates the two phases at DURXQG  WLPHV WKH QXFOHDU PDWWHU GHQVLW\ ȡ0), it is found that the cold NSs with thegravitational mass larger than two solar mass can be sustained. This is in sharp contrast to the case of the first-order hadron-quark transition.
The radii of the cold NSs with the CRover EOS are in the narrow range (12.5±0.5) km which is insensitive to the NS masses. Due to thestiffening of the EOS induced by the hadron-TXDUNFURVVRYHUWKHFHQWUDOGHQVLW\RIWKH16VLVDWPRVWȡ0 and the hyperon-mixing barely
occurs inside the NS core. This constitutes a solution of the long-standing hyperon puzzle first pointed out by Takatsuka et al. The effect ofcolor superconductivity (CSC) on the NS structures was also examined with the hadron-quark crossover picture. For the typical strength ofthe diquark attraction, a slight softening of the EOS due to two-flavor CSC takes place and the maximum mass is reduced by about 0.2
solar mass. The CRover EOS is generalized to the supernova matter at finite temperature to describe the hot NSs at birth. The hadron-quarkcrossover was found to decrease the central temperature of the hot NSs under isentropic condition. The gravitational energy release and thespin-up rate during the contraction from the hot NS to the cold NS were also estimated.
(5) Nuclear and atomic many-body problems(5-1) Giant dipole resonance in hot nuclei
Over the last several decades, extensive experimental and theoretical works have been done on the giant dipole resonance (GDR) in excitednuclei covering a wide range of temperature (T), angular momentum (J) and nuclear mass. A reasonable stability of the GDR centroid
energy and an increase of the GDR width with T (in the range Ң1Ѹ3 MeV) and J are the two well-established results. Some experiments
have indicated the saturation of the GDR width at high T: The gradual disappearance of the GDR vibration at much higher T has been
observed. Experiments on the Jacobi transition and the GDR built on superdeformed shapes at high rotational frequencies have beenreported in a few cases. We have demonstrated that thermal pairing included in the phonon damping model (PDM) is responsible for thenearly constant width of GDR at low temperature T < 1 MeV. We have also shown that the enhancement observed in the recent
experimentally extracted nuclear level densities in 104Pd at low excitation energy and various angular momenta is the first experimental
evidence of the pairing reentrance in finite (hot rotating) nuclei. The results of calculations within the PDM were found in excellent
agreement with the latest experimental data of GDR in the compound nucleus 88Mo.
(5-2) Hidden pseudospin symmetries and their origins in atomic nuclei
The quasi-degeneracy between single-particle orbitals, (n,l,j=l+1/2) and QíOM O  indicates a hidden symmetry in atomic nuclei,
the so-called pseudospin symmetry (PSS). Since the introduction of the concept of PSS in atomic nuclei, there have been comprehensive
efforts to understand its origin. Both splittings of spin doublets and pseudospin doublets play critical roles in the evolution of magic
numbers in exotic nuclei discovered by modern spectroscopic studies with radioactive ion beam facilities. Since the PSS was recognized asa relativistic symmetry in 1990s, many special features, including the spin symmetry (SS) for anti-nucleon, and other new concepts havebeen introduced. We have published a comprehensive review article (Liang et al., Phys. Rept. 2015) on the PSS and SS in various systems,
including extensions of the PSS study from stable to exotic nuclei, from non-confining to confining potentials, from local to non-local
potentials, from central to tensor potentials, from bound to resonant states, from nucleon to anti-nucleon spectra, from nucleon to hyperon- 312 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

spectra, and from spherical to deformed nuclei. We also summarized open issues in this field, including the perturbative nature, thesupersymmetric representation with similarity renormalization group, and the puzzle of intruder states.
(5-3) Efimov Physics in cold atoms
For ultra-cold atoms and atomic nuclei, the pairwise interaction can be resonant. Then, universal few-body phenomena such as the Efimov
effect may take place. We carried out an exploratory study suggesting that the Efimov effect can induce stable many-body ground states
whose building blocks are universal clusters. We identified a range of parameters in a mass and density imbalanced two-species fermionicmixture for which the ground state is a gas of Efimov-related universal trimers. An explicit calculation of the trimer-trimer interaction
reveals that the trimer phase is an SU(3) Fermi liquid stable against recombination losses. We proposed to experimentally observe thisphase in a fermionic mixture of Li-53Cr atoms. We have also written a comprehensive review article on theoretical and experimental
advances in Efimov physics.
(5-4) Supersymmetric Bose-Fermi mixtures
Some special Bose-Fermi mixtures of cold atoms and molecules in optical lattices could be prepared in such a way as they exhibit
approximate supersymmetry under the interchange of bosons and fermions. Since supersymmetry is broken at finite temperature and/or
density, an analog of the Nambu-Goldstone excitation, dubbed the “Goldstino”, should appear. We evaluated the spectral properties of theGoldstino in a Bose-Fermi mixture of cold atoms and molecules. We derived model independent results from sum rules obeyed by thespectral function. Also, by carrying out specific calculations with random phase approximation, analytic formula for the dispersion relationof Goldstino at small momentum was obtained.

Members
Chief Scientist (Lab. Head)
Tetsuo HATSUDA
Vice Chief Scientist
Tsukasa TADA
Research & Technical Scientists
Takumi DOI (Senior Research Scientist)
Pascal Raphaël Gabriel NAIDON (Senior Research Scientist)

Yoshimasa HIDAKA (Senior Research Scientist)
Haozhao LIANG (Research Scientist)

Nishina Center Research Scientists
Makiko NIO

Dang NGUYEN DINH

Special Postdoctoral Researchers
Noriaki OGAWA
Kazuhiko KAMIKADO
Shinya GONGYO

Yuya TANIZAKI
Shingo TORII
Hiromichi NISHIMURA

Foreign Postdoctoral Researcher
Di-Lun YANG
Postdoctoral Researchers
Yoichi IKEDA
Takumi IRITANI

Koichi HATTORI

Junior Research Associate
Masaru HONGO (Univ. of Tokyo)
International Program Associate
Shihang SHEN (Peking University)

Zhaoxi LI (Beihang University)

Visiting Researchers
Kanako YAMAZAKI (JSPS Fellow)

Kei SUZUKI (JSPS Fellow)

Senior Visiting Scientist
Koichi YAZAKI (Univ. of Tokyo)
Visiting Scientists
Noriyoshi ISHII (Osaka Univ.)
Motoi TACHIBANA (Saga Univ.)
Toichiro KINOSHITA (Cornell Univ.)
Tatsumi AOYAMA (Nagoya Univ.)
Hiroshi SUZUKI (Kyushu Univ.)
Takeo INAMI (National Taiwan University)
Koji HASHIMOTO (Osaka Univ.)
Daisuke KADOH (Keio Univ.)
Yoichi IKEDA (Osaka Univ.)
Tatsuyuki TAKATSUKA (Iwate Univ.)

Kanabu NAWA (Univ. of Tokyo)
Tomoya HAYATA (Univ. of Tokyo)
Takashi SANO (AIST)
Keitaro NAGATA (Hiroshima Univ.)
Kazuyuki KANAYA (Univ. of Tsukuba)
Shinsuke YOSHIDA (Los Alamos National Laboratory)
Takayuki MATSUKI (Tokyo Kasei Univ.)
Takumi IRITANI (Stony Brook University)
Shinya GONGYO (Centre national de la recherche
scientifique)- 313 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESHiroshi TOKI (Osaka Univ.)
Makoto TAKIZAWA (Showa Pharm. Univ.)
Shoichi SASAKI (Tohoku Univ.)
Yoshitaka HATTA (Univ. of Tsukuba)
Masashi HAYAKAWA (Nagoya Univ.)
Kenji SASAKI (Univ. of Tsukuba)
Shinya AOKI (Kyoto Univ.)
Atsushi NAKAMURA (Hiroshima Univ.)
Hung NGUYEN (Duy Tan University)
Keiko MURANO (Osaka Univ.)
Minoru ETO (Yamagata Univ.)
Norisuke SAKAI (Keio Univ.)
Arata YAMAMOTO (Univ. of Tokyo)
Student Trainees
Bruno CHARRON (Univ. of Tokyo)
Ryuichi KURITA (Univ. of Tokyo)
Terukazu ICHIHARA (Kyoto Univ.)
Takaya MIYAMOTO (Kyoto Univ.)
Tan Phuc LE (University of Science. Vietnam National University)
Part-time Workers
Koichi MURASE

Sho OZAKI (Yonsei University)
Gergely FEJOS (Osaka Univ.)
Takashi OKA (Univ. of Tokyo)
Takashi INOUE (Nihon Univ.)
Sachiko TAKEUCHI (Japan College of Social Work)
Toshifumi NOUMI (The Hong Kong University of Scienceand Technology)
Rhine Kumar Arayakkandi Keechiprath (Tata Institute ofFundamental Research)
Yoichi KAZAMA (Univ. of Tokyo)
Tetsuo MATSUI (The Open Univ. of Japan)
Teiji KUNIHIRO (Kyoto Univ.)
Kazuo FUJIKAWA (Nihon Univ.)

Yuya TANIZAKI (Univ. of Tokyo)
Kota MASUDA (Univ. of Tokyo)
Shoichiro TSUTSUI (Kyoto Univ.)
Min SHI (Anhui University)

Kayo YAMAJI

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
W. Bentz, A. Kotzinian, H.H. Matevosyan, Y. Ninomiya, A.W. Thomas and K. Yazaki, "Quark-Jet model for transverse momentum
dependent fragmentation functions," Physical Review D94 (2016) no.3, 034004.*
N. Ishibashi, T. Tada, “Dipolar quantization and the infinite circumference limit of two-dimensional conformal field theories,”
International Journal of Modern Physics A 31, 1650170 (2016).*
Y. Kazama, S. Komatsu, and T. Nishimura, "Classical Integrability for Three-point Functions: Cognate Structure at Weak and Strong
Couplings," Journal of High Energy Physics 1610, 042 (2016).*
Yoshimasa Hidaka, Shi Pu, Di-Lun Yang , Relativistic Chiral Kinetic Theory from Quantum Field Theories, Physical Review D 95, 091901(2017).*
Ioannis Iatrakis, Elias Kiritsis, Chun Shen, Di-Lun Yang , Holographic Photon Production in Heavy Ion Collisions, Journal of High Energy
Physics 1704 (2017) 035.*
Tomoya Hayata, Yoshimasa Hidaka, "Kinetic derivation of generalized phase space Chern-Simons theory," Physical Review B 95, 125137(2017)*
Kenji Fukushima, Yoshimasa Hidaka, “Magnetic shift of the chemical freezeout and electric charge fluctuations,”
Physical Review Letters 117, 102301 (2016).*
Tomoya Hayata, Yoshimasa Hidaka, Yuya Tanizaki,“Complex saddle points and the sign problem in complex Langevin simulation,”
Nuclear Physics B911, 94 (2016)*.
T.Blum, N.Christ, M.Hayakawa, T.Izubuchi, L.Jin, C.Jung and C.Lehner, "Connected and Leading Disconnected Hadronic Light-by-Light
Contribution to the Muon Anomalous Magnetic Moment with a Physical Pion Mass," Physical Review Letters 118, no. 2, 022005 (2017).*
Y. Ikeda, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, T. Inoue, T. Iritani, N. Ishii, K. Murano, and K. Sasaki (HAL QCD Collaboration), "Fate of
the Tetraquark Candidate Zc (3900) in Lattice QCD," Physical Review Letters 117, 242001 (2016).*
T. Iritani, T. Doi, S. Aoki, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, N. Ishii, K. Murano, H. Nemura and K. Sasaki (HAL QCD Collaboration)"Mirage in Temporal Correlation functions for Baryon-Baryon Interactions in Lattice QCD," Journal of High Energy Physics 1610, 101(2016).*
F. Okiharu, T. Doi, H. Ichie, H. Iida, N. Ishii, M. Oka, H. Suganuma and T. T. Takahashi, "Tetraquark and Pentaquark Systems in Lattice
QCD," Journal of Modern Physcs 7 (2016) 774.*
Masakiyo Kitazawa, Takumi Iritani, Masayuki Asakawa, Tetsuo Hatsuda, Hiroshi Suzuki, “Equation of State for SU(3) Gauge Theory via the
Energy-Momentum Tensor under Gradient Flow”, Physical Review D94, 114512 (2016), arXiv:1610.07810 [hep-lat] (12 pages).*
K. Fujikawa and A. Tureanu, "Naturalness in see-saw mechanism and Bogoliubov transformation", arXiv:1609.03309, Physics Letters B767
(2017) 199-204. *K. Fujikawa and A. Tureanu, "Parity-doublet representation of Majorana fermions and neutron oscillation", Physical Review D94 (2016)
115009.*K. Fujikawa, “Dimensional regularization is generic”, International Journal of Modern Physics A31 (2016) no.25, 1630042. *K. Fujikawa, “Nambu-Goldstone theorem and spin-statistics theorem”, International Journal of Modern Physics A31 (2016) no.13, 1630018.
(Special article in memory of Yoichiro Nambu).
K. Fujikawa, "BCS, Nambu-Jona-Lasinio, and Han-Nambu -- A sketch of Nambu's works in 1960-1965", Progress of Theoretical andExperimental Physics 2016 (2016) no.6, 06A101. *1RULKLUR,L]XND7RVKLIXPL1RXPLDQG1RULDNL2JDZD(QWDQJOHPHQWHQWURS\RIGH6LWWHUVSDFHĮ-vacua”, Nuclear Physics B 910, 23 (2016).*
N. Quang Hung, N. Dinh Dang, T. V. Nhan Hao, and L. Tan Phuc, Physical Review C 94, 064312 (2016).*- 314 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

N. Quang Hung, N. Dinh Dang, and L. T. Quynh Huong, Physical Review C 94, 024341 (2016).*
N. Quang Hung, N. Dinh Dang, and L. T. Quynh Huong, Physical Review Letters 118, 022502 (2017).*
D. Chakrabarty, N. Dinh Dang, and V.M. Datar, Giant dipole resonance in hot nuclei (invited review) Eur. Phys. Jour. A 52 (2016) : 143.*
V. Vorobyev, et al. (Belle Collaboration), “Measurement of the CKM angle ࢥ_1in B^0 Ѝ 'ࡄA  KA'ࡄAЍ .B6A  ʌA ࠟ ʌࠠ^decays with time-dependent binned Dalitz plot analysis,” Physical Review D 94, 052004-1-15 (2016).*- <HOWRQ HW DO %HOOH &ROODERUDWLRQ  ³6WXGLHV RI H[FLWHG ȄBF VWDWHV GHFD\LQJ LQWR ȄBFA DQG ȄBFA EDU\RQV´ 3K\VLFDO 5HYLew D 94,
052011-1-14 (2016).*
R. Mizuk, et al. (Belle Collaboration), ͆(QHUJ\6FDQRIWKHHA  HA-Ѝ h_b (nP) ȧA  ȧ^- (n=1,2) Cross Sections and Evidence for Ȍ(11020) Decays into Charged Bottomoniumlike States,͇Physical Review Letters 117, 142001-1-7 (2016).*
Y. Sato et al. (Belle Collaboration), “0HDVXUHPHQWRIWKHEUDQFKLQJUDWLRRI%ࡄAЍ 'A  ĲA- ȞࡄBĲUHODWLYHWR%ࡄAЍ 'A  OA- ȞࡄBl
decays with a semileptonic taging method,”Physical Review D 94, 072007-1-12 (2016).*
E. Won, et al. (Belle Collaboration), ͆Search for a dark vector gauge boson decaying to ȧA ȧ^- using ȞЍȧA ȧ^- Ț decays,͇
Physical Review D 94, 092006-1-6 (2016).*
S. Takeuchi and M. Takizawa, “The hidden charm pentaquarks are the hidden color-octet uud baryons?” Physics Letters B 764, 254-259(2017).*
Y.-T. Lai, et al. (Belle Collaboration), “Search for the 0^(--  JOXHEDOO LQ Ȋ 6  DQG Ȋ 6  GHFD\V´3K\VLFDO 5HYLHZ '   5 -1-8
(2017).*
S. Jia, et al. (Belle Collaboration), “Search for D^0 decays to invisible final states at Belle,”Physical Review D 95, 012001-1-13 (2017).*
T. Nanut, et al. (Belle Collaboration), ͆Observation of D^0 Ѝ Ȩ^0 Ț and Search for CP Violation in Radiative Charm Decays,͇
Physical Review Letters 118, 051801-1-8 (2017).*
S. Wehle, et al. (Belle Collaboration), ͆Lepton-Flavor-Dependent Angular Analysis of B Ѝ K^* OA  OA-,͇ Physical Review Letters 118,
111801-1-7 (2017).*
S. Gongyo, Y. Kikuchi, T. Hyodo and T. Kunihiro, “Effective field theory and the scattering process for magnons in ferromagnets,
antiferromagnets, and ferrimagnets,” Progress of Theoretical and Experimental Physics 2016 (2016) no.8, 083B01.*
M.N. Chernodub, S. Gongyo, “Interacting fermions in rotation: chiral symmetry restoration, moment of inertia and thermodynamics”, Journalof High Energy Physics 1701 (2017) 136.*
M.N. Chernodub, S. Gongyo, “Effects of rotation and boundaries on chiral symmetry breaking of relativistic fermions”, Physical Review D95(2017) no.9, 096006.*
Dian-Yong Chen, Xiang Liu, and Takayuki Matsuki, "Search for missing ȯ(4S)ȯ 6 LQWKHHH-Ѝȧȧ-ȯ(2S) process", Physical Review
D93, 034028-1-10 (2016).*
T. Matsuki, Qi-Fang L¥"u, Yubing Dong, and T. Morii, "Approximate degeneracy of heavy-light mesons with the same L", Physics Letter
B758, 274 (2016).*
Hao Zu, Xiang Liu, Takayuki Matsuki, "Understanding BЍX(3823)K^- via rescattering mechanism and predicting BЍȞ_{c2}(1D2)/ȯ
_3(3D3)K^-", Physical Review D94, 034005 (2016).*
Jun-Zhang Wang, Dian-Yong Chen, Qin-Tao Song, Xiang Liu, and Takayuki Matsuki, "Revealing the inner structure of the newly observedD^*_2(3000)", Phys. Rev. D94, 094044 (2016).*
S.H. Shen, J.N. Hu, H.Z. Liang, J. Meng, P. Ring, and S.Q. Zhang, “Relativistic Brueckner-Hartree-Fock Theory for Finite Nuclei”, Chinese
Physics Letter 33, 102103 (2016).*
N. Li, M. Shi, J.Y. Guo, Z.M. Niu, and H.Z. Liang, “Probing resonances of the Dirac equation with complex momentum representation”,
Physical Review Letters 117, 062502 (2016).*
Z.M. Niu, B.H. Sun, H.Z. Liang, Y.F. Niu, and J.Y. Guo, “Improved radial basis function approach with odd-even corrections”, PhysicalReview C 94, 054315 (2016).*
Z. Fang, M. Shi, J.Y. Guo, Z.M. Niu, H.Z. Liang, and S.S. Zhang, “Probing the resonance in the Dirac equation with quadruple-deformed
potentials by complex momentum representation method”, Physical Review C 95, 024311 (2017).*
M. Shi, X.X. Shi, Z.M. Niu, T.T. Sun and J.Y. Guo, “RMF-CGF method for resonances in deformed nuclei”, The European Physical Journal A
53, 40 (2017) .*(Review)
T. Doi and T. Inoue,"Baryon-Baryon Interactions from Lattice QCD: The Bridge from Quarks to Nuclei and Cosmos," Nuclear Physics News27, 13 (2017).*
Pascal Naidon, Shimpei Endo, “Efimov physics: a review” Reports on Progress in Physics 80 (2017) 056001.*
H.Z. Liang, “Pseudospin symmetry in nuclear structure and its supersymmetric representation”, Physica Scripta 91, 083005 (2016).*[Proceedings](Original Papers) *Subject to Peer Review
Ioannis Iatrakis, Elias Kiritsis, Chun Shen, Di-Lun Yang , Holographic Photon Production and Anisotropic Flow, to appear in Nuclear andParticle Physics Proceedings by Elsevier. [Contribution to the proceedings of Hard Probes 2016].*
Ioannis Iatrakis, Elias Kiritsis, Chun Shen, Di-Lun Yang , Direct-Photon Spectra and Anisotropic Flow in Heavy Ion Collisions from
Holography, to appear in European Physical Journal Web of Conferences. [Contribution to the proceedings of XII Quark Confinement andHadron Spectrum].*
Shi Pu, Di-Lun Yang, Analytic Solutions of Transverse Magneto-hydrodynamics under Bjorken Expansion, to appear in European PhysicalJournal Web of Conferences. [Contribution to the proceedings of XII Quark Confinement and Hadron Spectrum].*
L.Jin, T.Blum, N.Christ, M.Hayakawa, T.Izubuchi, C.Jung and C.Lehner,"The connected and leading disconnected diagrams of the hadronic
light-by-light contribution to muon g-2," Proceedings of Science (LATTICE 2016), 181 (2016), 34rd International Symposium on Lattice
Field Theory (LATTICE 2016),July 24-30, 2016, University of Southampton, Southampton, UK.
T. Doi, S. Aoki, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, N. Ishii, T. Miyamoto, K. Murano, H. Nemura and K. Sasaki "Baryon
interactions from lattice QCD with physical masses -- Overview and S = 0, 㸫4 sectors --" Proceeding of Science LATTICE2016, 110(2017).*- 315 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESN. Ishii, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, T. Miyamoto, K. Murano, H. Nemura and K. Sasaki,"Baryon
interactions from lattice QCD with physical masses -- S = 㸫3 sector: XiSigma and XiLambda - XiSigma --," Proceeding of Science
LATTICE2016, 127 (2017).*
K. Sasaki, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, N. Ishii, T. Miyamoto and K. Murano "Baryon interactions
from lattice QCD with physical masses -- S = 㸫2 sector --" Proceeding of Science LATTICE2016, 116 (2017).*
H. Nemura, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, N. Ishii, T. Miyamoto, K. Murano and K. Sasaki"Lambda-Nucleon and Sigma-Nucleon interactions from lattice QCD with physical masses" Proceeding of Science LATTICE2016, 101(2017).*
S. Aoki, T. Doi and T. Iritani, for HAL QCD Collaboration "Luscher's finite volume test for two-baryon systems with attractive interacions"
Proceeding of Science LATTICE2016, 109 (2016).*
T. Doi, S. Aoki, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, N. Ishii, T. Miyamoto, K. Murano, H. Nemura and K. Sasaki "First resultsof baryon interactions from lattice QCD with physical masses (1) -- General overview and two-nucleon forces --" Proceeding of Science
LATTICE2015, 086 (2016).*
N. Ishii, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani,T. Miyamoto, K. Murano, H. Nemura and K. Sasaki "First resultsof baryon interactions from lattice QCD with physical masses (2) -- S=㸫3 and S=㸫4 sectors (XiXi, XiSigma, XiLambda - XiSigmachannels)--" Proceeding of Science LATTICE2015, 087 (2016).*
K. Sasaki, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, N. Ishii, T. Miyamoto and K. Murano "First results of baryon
interactions from lattice QCD with physical masses (3) -- Strangeness S=-2 two-baryon system" Proceeding of Science LATTICE2015,
088 (2016).*
K. Fujikawa and A. Tureanu, “Lorentz invariant CPT violation in the Dirac equation”, arXiv: 1607.01409. [Contribution to the Proceedings ofthe Memorial Meeting for Abdus Salam’s 90th Birthday, Nanyang Technological University, Singapore].
H.Z. Liang, “Microscopic studies on nuclear spin-isospin properties---a personal perspective on covariant density functional theory”,(Proceedings of INPC2016, Adelaide, Australia, 11-16 September, 2016), PoS (INPC2016) 361.
X. Roca-Maza, G. Colo, H.Z. Liang, J. Meng, P. Ring, H. Sagawa, and P. W. Zhao, “Towards the improvement of spin-isospin properties innuclear energy density functionals”, (Proceedings of the XXI International School on Nuclear Physics and Applications & International
Symposium on Exotic Nuclei (ISEN-2015), Varna, Bulgaria, 6-12 September 2015), Journal of Physics: Conference Series 724, 012041(2016).
[Book](Original Papers) *Subject to Peer Review㢼㛫ὒ୍ࠊࠕᏱᐂࡢ⤫୍⌮ㄽࢆồࡵ࡚ࠖ(ᒾἼ⌧௦ᩥᗜ/Ꮫ⾡ 353ࠊᒾἼ᭩ᗑ).
[Others]㢼㛫ὒ୍ࠊࠕ≀⌮࡟ࡓࡎࡉࢃࡿࡍ࡭࡚ࡢேࡀ▱ࡗ࡚࠾ࡃ࡭ࡁ㉸ᘻ⌮ㄽࡢᇶ♏ࠖࠊ(⩻ヂ㸸Edward Witten, " What every physicist know about
string theory" )ࣃࣜࢸ࢕ 2016 ᖺ 7 ᭶ྕࠊ31(7), 4-12.
᪩ᕝ㞞ྖ, ࠕ࣑࣮ࣗ࢜ࣥࡢ␗ᖖ☢Ẽ⬟⋡ࠖ, ᩘ⌮⛉Ꮫ 2016 ᖺ 9 ᭶ྕ No.639.
T. Doi and editorial committee "20xx A Space Odyssey: from Quarks to Nuclei and Cosmos,"The Physical Society of Japan Membership
Journal Vol.71 No. 8, 522 (2016).
⸨ᕝ࿴⏨ࠊࠕࣇ࢓࢖࣐ࣥࣥᅗ㸪཯⢏Ꮚ㸪CPT ࡢ◚ࢀࠖࠊᩘ⌮⛉Ꮫ 2016 ᖺ 7 ᭶ྕ 34 ࣮࣌ࢪ㸦ࢧ࢖࢚ࣥࢫ♫㸧.
Oral Presentations[International Conference etc.]
Tsukasa Tada, "Dipolar Quantization of conformal field theories,” YITP Workshop String and Fields, August 10th, 2016.
Tsukasa Tada, "Dipolar quantization of conformal field theories,” KEK Theory workshop 2016, December 6th, 2016.
Di-Lun Yang,͆Side-Jumps and Collisions in Chiral Kinetic Theory from Quantum Field Theories”, Chirality Workshop, UCLA, March 27, 2017,
Los Angel, U.S.
Di-Lun Yang,͆Holographic photon production and flow in strongly coupled quark gluon plasmas”, Hard Probes 2016, East Lake International
Conference Center, September 24th, 2016, Wuhan, China
Di-Lun Yang,͆Holographic photon production in heavy ion collisions”, XII Quark Confinement and Hadron Spectrum, Makedonia Palace,
September 2nd, 2016, Thessaloniki, Greece.
Yoshimasa Hidaka, “Spatially modulated chiral condensates in quark matter,” Quarkyonic matter, from theory to experiment, Oct 24-28,
Central China Normal University, Wuhan, China.
Yoshimasa Hidaka, “The power of symmetry,” Big Waves of Theoretical Science in Okinawa, July 8 (Fri.) - July 11 (Mon), 2016, Okinawa
Institute of Science and Technology Graduate University, Okinawa, Japan.
Y. Tanizaki, Y. Hidaka, T. Hayata, "Lefschetz-thimble approach to the Silver Blaze problem of one-site fermion model", 34th International
Symposium on Lattice Field Theory (Lattice2016), Southampton, UK, 24-30 July 2016.
M. Hayakawa,"Standard model prediction for the muon g-2; QCD and QED contributions", The 1st KEK-KIAS-NCTS Joint WorkShop on
Particle Physics Phenomenology, May 26-29, 2016, National Center for Theoretical Physics, Taiwan.
M. Hayakawa,"Hadronic light-by-light scattering contribution to the muon g-2 from lattice QCD"The 2nd Durham-KEK-KIPMU-KIAS JointWorkShop, Octorber 24-28, 2016, KIAS, Korea.
M. Hayakawa, "Attempt to calculate hadronic light-by-light scattering contribution to the muon g-2 from lattice QCD,"Towards high precisionmuon g-2/EDM measurement at J-PARC, 28-29 November 2016, J-PARC, Tokai.
T. Doi, for HAL QCD Collaboration "Baryon-Baryon Interactions from Lattice QCD" Invited Talk given at KEK theory center workshop on"Hadron and Nuclear Physics in 2017", KEK, Tsukuba, Japan, 7-10 Jan. 2017.
T. Doi, for HAL QCD Collaboration "Baryon-Baryon Interactions from Lattice QCD" Invited Talk given at First Tsukuba-CCS-RIKEN joint
workshop on "microscopic theories of nuclear structure and dynamics",RIKEN, Saitama, Japan, 12-16 Dec. 2016.
T. Doi, for HAL QCD Collaboration "Baryon-Baryon Interactions from Lattice QCD" Talk given at International Molecule-type Workshop"Realistic hadron interactions in QCD", YITP, Kyoto, Japan, 21, Nov. - 02 Dec. 2016.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

T. Doi, for HAL QCD Collaboration "Two- and Three-Baryon Forces from Lattice QCD" Invited Talk given at YIPQS long-term andNishinomiya-Yukawa memorial workshop on "Nuclear Physics, Compact Stars, and Compact Star Mergers (NPCSM) 2016",YITP, Kyoto,
Japan, 17 Oct. - 18 Nov. 2016.
T. Doi, for HAL QCD Collaboration "Baryon interactions from lattice QCD with physical masses -- Overview and S=0, 㸫4 sectors --" Talk
given at "The 34th International Symposium on Lattice Field Theory (Lattice 2016)", Southampton, UK, 24-30 Jul. 2016.
T. Doi, for HAL QCD Collaboration "Baryon Interactions from Lattice QCD with physical masses" Talk given at INT Program "Nuclear
Physics from Lattice QCD", Institute for Nuclear Theory (INT), Seattle, USA, 17, Mar. - 27 May 2016.
T. Iritani, Current status for two baryon-systems in lattice QCD II: HAL QCD potential method and diagnosis of the direct method, First
Tsukuba-CCS-RIKEN joint workshop on microscopic theories of nuclear structure and dynamics, December 12-13, 2016, RIKEN Nishina
Center, 14-16, 2016, Center for Computational Science, University of Tsukuba, Japan.
T. Iritani, "Lattice studies of Z_N-symmetric QCD", ECT* Workshop "Gauge Topology: from Lattice to Colliders", November 7-11, 2016,
ECT*, Trento, Italy.
T. Iritani, "Baryon interactions in lattice QCD: the direct method vs. the HAL QCD potential method", The 34th International Symposium on
Lattice Field Theory, July 24-30, 2016, Highfield Campus, University of Southampton, Southampton, UK.
T. Iritani, "Baryon interactions from Luscher’s finite volume method and HAL QCD method", INT-16-1 Nuclear Physics from Lattice QCD,
April 18, 2016, Institute for Nuclear Theory, University of Washington, Seattle, USA.
K. Fujikawa, “Higgs and neutrino masses in the Standard Model”, Invited talk, YITP 50th Anniversary Symposium, Stony Brook University,
Stony Brook, New York, USA, October 10-11, 2016.
K. Fujikawa, “Chiral anomaly and Berry phase”, Invited talk, International Symposium “Chiral Matter 2016”, RIKEN, Wako, Japan,
December 5-8, 2016.
K. Fujikawa, “Path Integrals in Particle and Condensed Matter Physics: Quantum Anomalies and Related Topics”, Invited talk, International
Workshop “Path Integrals in Complex Systems”, Lorentz Center, Leiden University, February 6-10, 2017.
Pascal Naidon, “From the Yukawa to the Efimov attraction”, Invited talk, Workshop on “Quantum Many-Body Problems in Particle, Nuclear,and Atomic Physics”, Duy Tan University, Danang, Vietnam, March 8-11, 2017.
Pascal Naidon, “Interacting Bose polarons: from the Yukawa to the Efimov attraction”, Invited talk, Workshop on "Dynamics of hightly
unstable exotic light nuclei and few-body systems", CEA Saclay, France, January 30 - February 3, 2017.
Pascal Naidon, “Universal clusters of mass-imbalanced fermions” Invited talk, “Few-body physics in cold-atomic gases”, Beijing, China, Apr.
14-16, 2016.
Noriaki Ogawa,"Physical Modeling of Growing Cellular Mosaic Patterns in Fish Retina”,
Workshop "Big Waves of Theoretical Science in Okinawa”, Okinawa Institute for Science and Technology, 2016 July 9.
N. Quang Hung, "Nuclear Theory Group at Duy Tan University", Oral talk, International Workshop on Quantum Many-Body Problems in
Particle, Nuclear, and Atomic Physics, Danang city, Vietnam, Mar. 8-11, 2017.
M. Takizawa, for Belle Collaboration, “New results on the XYZ states and B-decays from Belle,” Invited talk, “Helmholts International
Summer School - Dubna International Advanced School of Theoretical Physics”, Dubna, Russia, July 18-30, 2016
Takayuki Matsuki, "String point of view for heavy-light mesons", XIIth Quark Confinement and the Hadron Spectrum, Thessaloniki, Greece,
Aug. 29-Sept. 3
Shihang Shen, “Relativistic Brueckner-Hartree-Fock Theory for Finite Nuclei”, Recent Progresses in Nuclear Structure Physics 2016
(NSP2016), Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, December 5-23, 2016.
Shihang Shen, “Relativistic Brueckner-Hartree-Fock Theory for Finite Nuclei”, First Tsukuba-CCS-RIKEN joint workshop on microscopic
theories of nuclear structure and dynamics, Wako & Tsukuba, Japan, December 12-16, 2016.
Min Shi, “Probing Resonances of the Dirac Equation with Complex Momentum Representation”, First Tsukuba-CCS-RIKEN joint workshop
on microscopic theories of nuclear structure and dynamics, Wako & Tsukuba, Japan, December 12-16, 2016.
Min Shi, “Probing Resonances of the Dirac Equation with RMF-CSM and RMF-CMR Method”, Recent Progresses in Nuclear Structure
Physics 2016 (NSP2016), Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, December 5-23, 2016.
Zhongming Niu, “High-precision nuclear physics inputs and their influences on the r-process simulations”, Recent Progresses in Nuclear
Structure Physics 2016 (NSP2016), Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, December 5-23, 2016.
Zhongming Niu, “Microscopic description of nuclear beta-decay half-lives”, First Tsukuba-CCS-RIKEN joint workshop on microscopic
theories of nuclear structure and dynamics, Wako & Tsukuba, Japan, December 12-16, 2016.
Haozhao Liang, “From Functional Renormalization Group to Density Functional Theory--- a case study of 0D anharmonic oscillator”, Invitedtalk, ECT* Workshop: Unraveling the complexity of nuclear systems: single-particle and collective aspects through the looking glass, ECT*,
Trento, Italy, February 6-10, 2017.
Haozhao Liang, “From Functional Renormalization Group to Density Functional Theory--- a case study of 0D anharmonic oscillator”, First
Tsukuba-CCS-RIKEN joint workshop on microscopic theories of nuclear structure and dynamics, Wako & Tsukuba, Japan, December
12-16, 2016.
Haozhao Liang, “From Functional Renormalization Group to Density Functional Theory--- a case study of 0D anharmonic oscillator”, Recent
Progresses in Nuclear Structure Physics 2016 (NSP2016), Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan,
December 5-23, 2016.
Haozhao Liang, “Microscopic studies on nuclear spin-isospin properties---a personal perspective on covariant density functional theory”,
Invited talk, The 26th International Nuclear Physics Conference (INPC2016), Adelaide, Australia, September 11-16, 2016.
Haozhao Liang, “Relativistic Brueckner-Hartree-Fock theory for finite nuclei”, The 10th APCTP-BLTP/JINR-RCNP-RIKEN Joint Workshop
on Nuclear and Hadronic Physics, RIKEN, Wako, Japan, August 17-21, 2016.
M. Nio, “Higher-order QED contributions to muon g-2,” invitead talk, international workshop on “Towards high precision muon g-2/EDM
measurement at J-PARC”, J-PARC, Tokai, Japan, November 28-29, 2016.
[Domestic Conference]᪥㧗⩏ᑗ, ༡భᶞ, “㔞Ꮚᩓ㐓⣔࡟࠾ࡅࡿ༡㒊࣭ࢦ࣮ࣝࢻࢫࢺࣥࡢᐃ⌮,” ᪥ᮏ≀⌮Ꮫ఍ ➨ 72 ᅇᖺḟ኱఍(2017 ᖺ)㸦኱㜰኱Ꮫ㸧 3 ᭶ 17-20᪥.
᪥㧗⩏ᑗ, ⚟ᔱ೺஧, “Magnetic shift of the chemical freezeout and electric charge fluctuations,” ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ኱Ꮫ,- 317 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES2016 ᖺ 9 ᭶ 21-24 ᪥.
᪩ᕝ㞞ྖ,"Hadronic light-by-light scattering contribution to muon g-2 from lattice QCD: pogress and challenges," New Physics Forum (Muon),
January 19, 2016, KEK, Tsukuba.
᪩ᕝ㞞ྖ,"Is the theoretical prediction for the muon g-2 really correct ?", PPP2016, 2016 ᖺ 9 ᭶ 5 ᪥~9 ᪥, ி㒔኱Ꮫᇶ♏≀⌮Ꮫ◊✲ᡤ, ி㒔.
T. Doi, for HAL QCD Collaboration,"Baryon Forces from Lattice QCD," Invited Talk given at Workshop on "Advances of nuclear structure
and reaction physics based on the realistic nuclear forces", Yukawa Institute of Theoretical Physics (YITP), Kyoto, Japan, 27-29 Mar.
2017.
T. Doi, for HAL QCD Collaboration "Baryon forces from physical point lattice QCD [4] -- General overview and S=0, 㸫4 sectors --"Talkgiven at JPS meeting, Osaka University, Osaka, Japan, 17-20 Mar. 2017.
T. Doi, for HAL QCD Collaboration "Interactions between clusters on a lattice" Invited Talk given at Workshop on "Clusters connecting
quarks, hadrons, nuclei and atoms", Osaka University, Osaka, Japan, 16, Mar. 2017.
T. Doi, for HAL QCD Collaboration "Lattice QCD calculations for Three-Nucleon Forces" Talk given at JPS meeting, University of Miyazaki,
Miyazaki, Japan, 21-24 Sep. 2016.
T. Doi, for HAL QCD Collaboration,"Baryon forces from physical point lattice QCD [3] -- General overview and S=0, 㸫4 sectors --" Talk
given at JPS meeting, University of Miyazaki, Miyazaki, Japan, 21-24 Sep. 2016.
T. Doi, for HAL QCD Collaboration, "Baryon Interactions from Lattice QCD" Invited Talk given at Symposium on "Forefront of researcheswith supercomputers HOKUSAI and Shoubu", RIKEN, Saitama, Japan, 08 Jun. 2016.
T. Doi, "Baryon-Baryon Interactions from Lattice QCD" Seminar at Niigata University, Niigata, Japan, 6 Dec. 2016.
T. Doi, "Hadron Interactions from Lattice QCD" Seminar at "QCD Club", RIKEN, Wako, Saitama, Japan, 28 Oct. 2016.
T. Doi,"Baryon Interactions from Lattice QCD with physical masses" Seminar at Nagoya University, Nagoya, Japan, 17 May 2016.
ධ㇂໶ࠊ"Current status for two baryon systems in lattice QCD II: HAL QCD potential method”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ2017 ᖺ 3 ᭶ 17-20 ᪥㸬ධ㇂໶ࠊ"᱁Ꮚ QCD ࡟ࡼࡿ᰾Ꮚ㸰యィ⟬ࡢ⌧≧࡜ᒎᮃ"ࠊ⣲⢏Ꮚ࣭ཎᏊ᰾࣭Ᏹᐂࠕி࠿ࡽ࣏ࢫࢺி࡟ྥࡅ࡚ࠖࢩ࣏ࣥࢪ࣒࢘ࠊ⟃Ἴ኱Ꮫᮾி
࢟ࣕࣥࣃࢫࠊ2017 ᖺ 2 ᭶ 16-17 ᪥
Pascal Naidon, “From the Yukawa to the Efimov attraction”, Japan Physical Society meeting, Osaka, March 17, 2017.
Pascal Naidon, “Interacting Bose polarons”, Cold-atom one-day workshop at RIKEN, Wako, August 25th 2016.
ᑠᕝ㌶᫂, ึ⏣ဴ⏨, ᮃ᭶ᩔྐ, ❧ᕝṇᚿ,“Dynamical Pattern Selection of Growing Cellular Mosaic in Fish Retina",᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍,኱㜰኱Ꮫ, 2017 ᖺ 3 ᭶ 17 ᪥.
M. Takizawa, “Structure of Y(4260) by the quark model,” Workshop on "Structures and Interactions of Heavy Quark Hadrons", KEK Tokai
Campus, Tokai, Japan March 1-3, 2017.
Poster Presentations[International Conference etc.]
Di-Lun Yang,“Direct-Photon Spectra and Anisotropic Flow in Heavy Ion Collisions from Holography “, Quark Matter 2017, Hyatt Regency,
February 2, 2017, Chicago, U.S.
Di-Lun Yang,“Transverse flow induced by inhomogeneous magnetic fields in the Bjorken expansion “, XII Quark Confinement and Hadron
Spectrum, Makedonia Palace, August 30, 2016, Thessaloniki, Greece.
Pascal Naidon, “Two impurities in a Bose-Einstein condensate: from Yukawa to Efimov attracted polarons”, 25th International Conferenceon Atomic Physics (ICAP2016), Seoul, South Korea, July 24-29, 2016.
Noriaki Ogawa, Tetsuo Hatsuda, Atsushi Mochizuki, Masashi Tachikawa,"Dynamical Pattern Selection of Growing Cellular Mosaic in Fish
Retina”, Annual Conference of Japan Society of Mathematical Biology 2016, Kyushu University, 2016 Sep 7-8.
Shihang Shen, “Relativistic Brueckner-Hartree-Fock Theory for Finite Nuclei”, poster presentation at the NIC-XIV School 2016, June 15,
2016, Niigata University, Niigata, Japan.
[Domestic Conference]
ᑠᕝ㌶᫂,ࠕ㨶㢮⥙⭷㗹యࣔࢨ࢖ࢡᙧᡂࡢࣔࢹࣝ໬࡜ゎᯒࠖࠊ◊✲఍ࠕ⇕ሙࡢ㔞Ꮚㄽࠖ, ⌮◊࿴ග, 2016 ᖺ 8 ᭶ 23 ᪥.
ᑠᕝ㌶᫂, ึ⏣ဴ⏨, ᮃ᭶ᩔྐ, ❧ᕝṇᚿ,ࠕ⥙⭷㗹యࣔࢨ࢖ࢡᙧᡂࡢࣔࢹࣝ໬࡜ゎᯒࠖ,᪥ᮏ≀⌮Ꮫ఍⛅Ꮨ኱఍, 㔠ἑ኱Ꮫ, 2016 ᖺ 9 ᭶ 16
᪥.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Theoretical Research Division
Strangeness Nuclear Physics Laboratory
1. Abstract
We proposed accurate calculation method called ‘Gaussian Expansion Method using infinitesimally shifted Gaussian lobe basis
function’. When one proceeds to four-body systems, calculation of the Hamiltonian matrix elements becomes much laborious. In order tomake the four-body calculation tractable even for complicated interactions, the infinitesimally-shifted Gaussian lobe basis function has
been proposed. The GEM with the technique of infinitesimally-shifted Gaussians has been applied to various three-, four- and five-body
calculations in hypernuclei, the four-nucleon systems, and cold-atom systems. As results, we succeeded in extracting new understandings invarious fields.

2. Major Research Subjects(1) Hypernuclear structure from the view point of few-body problem(2) Structure of exotic hadron system(3) quantum atomic system and ultra cold atomic system(4) Equation of state for neutron star

3. Summary of Research Activity(1) Recently, at RIBF, they observed tetra neutron system to be bound or resonant state. Theoretically, it is requested to study this systemtheoretically. We performed four-body calculation using NN realistic force and a phenomenological three-body force. We found that
we need unrealistically strong three-body force to describe 4n system.
(2) We investigate the effects of the odd-state part of bare 䂻䂻 interactions on the structure of neutron stars by constructing equations ofstate (EOSs) for uniform nuclear matter containing 䂻 and 䃂-㻌 hyperons with use of the cluster variational method. The EOS obtainedfor NS matter becomes stiffer as the odd-state 䂻䂻 interaction becomes more repulsive, and correspondingly the maximum mass of NSs
increses.
(3) We calculate the universal spectrum of trimer and tetramer states in heteronuclear mixture of ultracold atoms with different masses inthe vicinity of the heavy-light dimer threshold. We find that trimer and tetramer cross into the heavy-light dimer threshold at the same
point and that as the mass ratio M/m decreases, the distance between the thresholds for trimer and tetramer states become smaller.

Members
Associate Chief Scientist (Lab. Head)
Emiko HIYAMA
Research Scientists
Hiroya SUNO (Research Scientist, concurrent: StrangenessNuclear Physics Laboratory, Main: Field Theory Research Team)
Contract Researchers
Yasuro FUNAKI

Hyun-Chul KIM

Special Postdoctoral Researchers
Masahiro ISAKA
Shin WATANABE

Hajime TOGASHI
Masahiro YAMAGUCHI

Postdoctoral Researchers
Hajime TOGASHI

Tingting SUN

Junior Research Associates
Saori MAEDA (Tokyo Tech.)Jehee LEE (Inha University)
International Program Associate
Christiane SCHMICKLER (TU Darmstadt)

Tetsuya YOSHIDA (Tokyo Tech.)㻌 Qian WU (Nanjing University)

Visiting Researcher
Naoyuki SAKUMICHI (JSPS Fellow)
Visiting Scientists
Masayuki ASAKAWA (Osaka Univ.)
Takayuki MYO (Osaka Inst. of Tech.)
Masakiyo KITAZAWA (Osaka Univ.)
Takenori FURUMOTO (Yokohama National Univ.)
Makoto OKA (Tokyo Tech.)

Yasuro FUNAKI (Beihang University)
Hidekatsu NEMURA (Univ. of Tsukuba)
Taiichi YAMADA (Kanto Gakuin Univ.)
Yasuo YAMAMOTO (Tsuru Univ.)
Atsushi UMEYA (Nihon Inst. of Tech.)- 319 -

RIKEN Accel. Prog. Rep. 50 (2017)

Tetsuo HYODO (Kyoto Univ.)
Soichi ISHIKAWA (Hosei Univ.)
Atsushi HOSAKA (Osaka Univ.)
Akinobu DOTE (KEK)
Ying ZHANG (Tianjin University)
Jinniu HU (Nankai Univ.)
Wolfram WEISE (TUM)
Masahiro ISAKA (JSPS)
Javier ROCAMAZA (Univ. of Milan)
Xian-Rong ZHOU (East China Normal Univ.)
Kei KOTAKE (Fukuoka Univ.)Hans-Josef SCHULZE (INFN)
Tingting SUN (Zhengzhou University China)
Jirina STONE (Univ, of Tennessee Knoxville)
Chengjun XIA (Zhejiang University)
Satoru HIRENZAKI (Nara Women's Univ.)
Kiyomi IKEDA (Niigata Univ.)
Student Trainees
Akira YOKOTA (Tokyo Tech.)Karl SALLMEN (TIT)

Ⅵ. RNC ACTIVITIES

Daisuke JIDO (Tokyo Met. Univ.)
Thomas Adriaan RIJKEN (Radboud Univ. Nijmegen)Shoji SHINMURA (Gifu Univ.)
Kazuma NAKAZAWA (Gifu Univ.)
Toru SATO (Osaka Univ.)
Philipp GUBLER (ECT*)
Toshio MOTOBA (Osaka Elec.-Com. Univ.)
Shuichi GOJUKI (SGI Japan Ltd.)Hyun-Chul KIM (Inha Univ.)
Petr VESELY (Academy of Science of the Czech Republic Institute of the
Nuclear Physcis)
Jean-Marc RICHARD (Lyon University)
Ulugbek YAKHSHIEV (Inha University)
Jiwei CUI (Xidian University)
Satoshi NAKAMURA (Tohoku Univ.)
Tomokazu FUKUDA (Osaka Elec.-Com. Univ.)

Christiane SCHMICKLER (TU Darmstadt)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
S. Maeda, M. Oka, A. Yokota, E. Hiyama and Y-R. Liu, “A model of charmed baryon-nucleon potential and two- and three-body bound stateswith charmed baryon”, Progress of Theoretical and experimental Physics, 2016, 023D02 (2016).*
H. Togashi, E. Hiyama, Y. Yamamoto and M. Takano, “Equation of state for neutron stars with hyperons using a variational method”, PhysicalReview C, 93, 035808 (2016).*
E. Hiyama, R. Lazauskas, J. Carbonell and M. Kamimura, “Possibility of generating a 4-resonance with a $T=3/2$ isospin 3-neutron force”,
Physical Review C 93, 044004 (2016).*
H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano, “Nuclear equation of state for core-collapse supernova
simulations with realistic nuclear forces”, Nuclear Physics A, 961, 78, (2017).*
Oral Presentations[International Conference etc.]
E. Hiyama, “Recent progress and future prospect of hypernuclear physics --from theory view point--”, The 31st Reimei Workshop on Hadron
Physics in Extreme Conditions at J-PARC, Tokai, Japan, January, 2016.
E. Hiyama, “Clustering aspect of hypernuclei”, International workshop on Clustering effects of nucleons in nuclei and quarks in multi-quark
states, Beijing, China, April, 2016.
H. Togashi, E. Hiyama and M. Takano, “Hyperon equation of state for supernovae and neutron stars with the variational method”, 4th DTA
Symposium on Compact stars and gravitational wave astronomy, Mitaka, Japan, May, 2016.
H. Togashi, “Microscopic equation of state for core-collapse supernovae and neutron stars with realistic nuclear interactions”, Key Laboratory
Seminar in Institute of Theoretical Physics, Beijing, China, June, 2016.
H. Togashi, E. Hiyama and M. Takano, “Variational study for the equation of state of hot nuclear matter with hyperons”, J-PARC Workshop
2016: From Exotic hadrons to QGP, Incheon, Korea, June, 2016.
H. Togashi, E. Hiyama and M. Takano, “Variational study of the supernova equation of state with hyperons”, 14th Symposium on Nuclei in the
Cosmos (NIC XIV), Niigata, Japan, June, 2016.
H. Togashi, E. Hiyama and M. Takano, “Microscopic equation of state for hot dense matter in core-collapse supernovae”, The 10th
APCTP-BLTP/JINR-RCNP-RIKEN Joint Workshop on Nuclear and Hadron Physics, Wako, Japan, August, 2016.
H. Togashi, E. Hiyama and M. Takano, “Variational study of hyperon effects on the nuclear equation of state at finite temperature”, International
Nuclear Physics Conference (INPC2016), Adelaide, Australia, September, 2016.
H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano, “New nuclear equation of state for core-collapse supernovae
with realistic nuclear forces”, International conference on Compact stars and gravitational waves, Kyoto, Japan, October, 2016.
H. Togashi, E. Hiyama and M. Takano, “Variational study of hyperon mixing in neutron stars and supernova cores”, NSMAT 2016, Sendai,
Japan, November, 2016.
H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano, “New table of supernova equation of state using a variational
method and its application to astrophysical compact objects”, QCS2017, Kyoto, Japan, February, 2017.
H. Togashi, “Nuclear equation of state with the variational method and the effect of Lambda hyperons in supernova cores”, International
Workshop on Quantum Many-Body Problems in Particle, Nuclear, and Atomic Physics, Danang, Vietnam, March, 2017.
H. Togashi, E. Hiyama and M. Takano, “Hyperon stars at zero and finite temperatures with the variational method”, SNP2017, Neyagawa,Japan, March, 2017.
T. Oyamada, E. Hiyama and M. Tachikawa, “Three-Body Gaussian Expansion Method Calculations for He Atom”, International Workshop on
Quantum Many-Body Problems in Particle, Nuclear, and Atomic Physics, Danang, Vietnam, March, 2017.

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Y. Yamaguchi, A. Giachino, E. Santopinto and A. Hosaka, “Hidden-charm meson-baryon molecules with the five-quark bare field potential”,
Workshop on Structures and Interactions of Heavy Quark Hadrons, Tokai, Japan, March, 2017.
Y. Yamaguchi and T. Hyodo, “Quark mass dependence of H-dibaryon in Lambda-Lambda scattering”, SNP2017, Neyagawa, Japan, March,
2017.
S. Watanabe, T. Matsumoto, K. Ogata, and M. Yahiro, “Four- and three-body breakup mechanism of 6Li elastic scattering”, 11th International
Conference on Clustering Aspects of Nuclear Structure and Dynamics, Napoli, Italy, May, 2016.
S. Watanabe, K. Minomo, M. Shimada, S. Tagami, M. Kimura, M. Takechi, M. Fukuda, D. Nishimura, T. Suzuki, T. Matsumoto, Y. R. Shimizu,
and M. Yahiro, “Deformation and halo structure through reaction cross sections”, Direct Reactions with Exotic Beams (DREB2016), Halifax,
Canada, July, 2016.
S. Watanabe, T. Matsumoto, K. Ogata, and M. Yahiro, “Four-body dynamics of 6Li scattering”, The 10th APCTP-BLTP/JINR-RCNP-RIKEN
Joint Workshop on Nuclear and Hadron Physics, Wako, Japan, August, 2016.
S. Watanabe, T. Matsumoto, K. Ogata, and M. Yahiro, “Four- and three-body dynamics in 6Li scattering”, International Nuclear Physics
Conference (INPC2016), Adelaide, Australia, September, 2016.
S. Watanabe, T. Matsumoto, K. Ogata, and M. Yahiro, “Four-body reaction mechanism of 6Li scattering”, Workshop on Nuclear Cluster
Physics (WNCP2016), Yokohama, Japan, November, 2016.
S. Watanabe, K. Ogata, T. Matsumoto, “Dynamic and static core excitation effects on deformed halo nuclei”, International Workshop on
Quantum Many-Body Problems in Particle, Nuclear, and Atomic Physics, Danang, Vietnam, March, 2017.
[Domestic Conference]ᐩᶔ⏠, “Nuclear equation of state for neutron stars and core-collapse supernovae with the variational method”, ⟃Ἴ኱ᏛཎᏊ᰾⌮ㄽ◊✲ᐊࢭ࣑ࢼ࣮, ⟃Ἴ, 6 ᭶, 2016.
ᐩᶔ⏠, ⫧ᒣャ⨾Ꮚ, 㮚㔝ṇ฼, “ኚศἲ࡟ࡼࡿࣁ࢖࣌ࣟࣥΰྜࢆ⪃៖ࡋࡓ᭷㝈 ᗘ᰾≀㉁≧ែ᪉⛬ᘧࡢ◊✲”, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ, 9 ᭶, 2016.
ᐩᶔ⏠, ⫧ᒣャ⨾Ꮚ, 㮚㔝ṇ฼, “ኚศἲ࡟ࡼࡿ᭷㝈 ᗘࣁ࢖࣌ࣟࣥ≀㉁≧ែ᪉⛬ᘧ࡜ཎጞ୰ᛶᏊᫍ࡬ࡢ㐺⏝”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍,኱㜰, 3 ᭶, 2017.
ᐩᶔ⏠, “ኚศἲ࡟ࡼࡿ᰾≀㉁≧ែ᪉⛬ᘧ –Supernova EOS ࢸ࣮ࣈࣝ᏶ᡂࡲ࡛ࡢ㐨ࡢࡾ–“, ◊✲఍ࠕཎᏊ᰾ࡢࢧ࢖ࢬ࡜≧ែ᪉⛬ᘧࡢ≀⌮ࠖ, ⚟ᒸ, 3 ᭶, 2017.
ᒣཱྀᗣᏹ, A. Giachino, ➉ෆᖾᏊ, ℧⃝ㄔ, E. Santopinto, ಖᆏ῟, “཯ D ୰㛫Ꮚ࡜ࢳ࣮࣒ࣕࣂࣜ࢜ࣥ࡟ࡼࡿࣁࢻࣟࣥศᏊ≧ែࡢゎᯒ”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰, 3 ᭶, 2017.
Ώ㑓ៅ, “6Li ᙎᛶᩓ஘࡟࠾ࡅࡿືⓗᛶ㉁”, ἲᨻ኱Ꮫࢭ࣑ࢼ࣮, ᮾி, 4 ᭶, 2016.
Ώ㑓ៅ, “CDCC calculations of 6Li elastic scattering: Effects of four- and three-body breakup channels”, ᮾிᕤᴗ኱Ꮫࢭ࣑ࢼ࣮, ᮾி, 6 ᭶,2016.
Ώ㑓ៅ, “཯ᛂ᩿㠃✚࡛᥈ࡿ᰾ᵓ㐀◊✲ࡢ㐍ᒎ”, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ, 9 ᭶, 2016.
Ώ㑓ៅ, “Reaction cross sections as a probe of deformation and shell structures”, RIKEN RIBF Nuclear Physics Seminar, ᇸ⋢, 12᭶, 2016.
Ώ㑓ៅ, “ኚᙧࡸẆ㐍໬ࡢࣉ࣮ࣟࣈ࡜ࡋ࡚ࡢ཯ᛂ᩿㠃✚”, ἲᨻ኱Ꮫࢭ࣑ࢼ࣮, ᮾி, 12 ᭶, 2016.
Ώ㑓ៅ, ᯇᮏ⌶☻, ⥴᪉୍௓, ඵᑜṇಙ, “㐃⥆≧ែ㞳ᩓ໬ࢳࣕࢿࣝ⤖ྜἲࢆ⏝࠸ࡓᙅ᮰⦡ཎᏊ᰾ࡢグ㏙”, ◊✲఍ࠕࢡࣛࢫࢱ࣮࣭ᖹᆒሙ ࡢ୧ഃ㠃࠿ࡽࡳࡿཎᏊ᰾ᵓ㐀ࡢከᵝᛶ࡜ࡑࡢࢲ࢖ࢼ࣑ࢡࢫࠖ, ኱㜰, 1 ᭶, 2017.
Ώ㑓ៅ, “ኚᙧࣁ࣮ࣟ᰾ࡢືⓗ⫼ᛶ㉁࡜㟼ⓗᛶ㉁”, ஑኱ཎᏊ᰾ࢭ࣑ࢼ࣮, ⚟ᒸ, 3 ᭶, 2017.
Ώ㑓ៅ, ⥴᪉୍௓, ᯇᮏ⌶☻, “㸯୰ᛶᏊࣁ࣮ࣟ᰾࡟ᑐࡍࡿⰺ᰾ບ㉳ࡢຠᯝ”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰, 3 ᭶, 2017.

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Ⅵ. RNC ACTIVITIESSub Nuclear System Research Division
Radiation Laboratory
1. Abstract
Nucleons, such as protons and neutrons, are a bound state of constituent quarks glued together with gluons. The detail structure of
nucleons, however, is not well understood yet. Especially the mechanism to build up the spin of proton, which is 1/2, is a major problem inphysics of the strong force. The research goal of Radiation Laboratory is to solve this fundamental question using the world firstpolarized-proton collider, realized at RHIC in Brookhaven National Laboratory (BNL) in USA. RHIC stands for Relativistic Heavy Ion
Collider, aiming also to create Quark Gluon Plasma, the state of Universe just after the Big Bang, and study its property. RIKEN-BNL
Research Center (RBRC) directed by S. Aronson carries our core team at BNL for those exciting researches using the PHENIX detector.
We have observed that the proton spin carried by gluons is finite and indeed sizable. We also identified W bosons in the electron/positron
decay channel and in the muon decay channel, with which we are about to conclude how much anti-quarks carry the proton spin. Other than
the activities at RHIC we are preparing and starting new experiments at J-PARC and Fermilab to study the nature of hadron. We are also
performing technical developments such as novel ion sources, fine-pitch silicon pixel detectors and high-performance trigger electronics.

2. Major Research Subjects
1) Spin physics with relativistic polarized-proton collisions at RHIC
2) Study of nuclear matter at high temperature and/or at high density
3) Technical developments on radiation detectors and accelerators

3. Summary of Research Activity(1) Experimental study of spin structure of proton using RHIC polarized proton collider[See also RIKEN-BNL Research Center Experimental Group for the activities at BNL]
The previously published central pion double spin asymmetries at the highest collision energies at RHIC of 510 GeV have been
augmented with the publication of the first forward double spin asymmetries on J/Psi mesons in 2016 by PHENIX. The forward rapidities
increase the probed gluon momentum fractions at RHIC down to regions not accessible until the planned electron-ion collider. Whilestatistically limited, there is an indication of a positive gluon spin contribution also at such low momentum fractions and together with theprevious measurements would indicate a rather dominant gluon contribution to the nucleon spin.
With the valence quark spin contribution already reasonably well known, the contributions from sea quarks and orbital angularmomenta remain to be understood. PHENIX has collected data to access the sea quark polarizations via leptonic decays of W bosons.
Preliminary results have been obtained using all the data taken so far. The central rapidity electron decay channel results have been
published while the forward muon decay channel results are now finalized and will be published soon.
While orbital angular momentum cannot be directly accessed at RHIC, several transverse spin phenomena have been observed which
relate to orbital angular momentum and the three-dimensional structure of the nucleon. These phenomena by themselves have become amajor field of research as the dynamics of the strong interaction. During the 2015 RHIC operation, collisions of transversely polarized
protons with Au and Al nuclei were provided for the first time. The observed asymmetries in very forward neutron production showedsurprisingly strong nuclear-size dependence. It could be explained by a contribution of electromagnetic interactions which may be sizablefor heavy nuclei. The results have been prepared for publication.
To further investigate these effects the PHENIX experiment proposes substantial detector upgrades to go along the expected
accelerator improvements. The proposed upgrade replaces the present magnet with the Babar solenoid, and we are considering to build an
open-geometry forward spectrometer which has both hadronic and electromagnetic calorimetry as well as tracking, designed with a focus
on the measurement of charged tracks and fully reconstructed jets in pea and pap collisions. Key measurements of this upgrade are forward
Drell-Yan di-electrons to study sea quarks in nuclei and transverse-spin asymmetries for forward inclusive jets to study spin-momentum
correlations in the proton.
As a pilot measurement, some of us are participating in the Fermilab Sea Quest experiment which has been collecting muon pairs
using a 120-GeV unpolarized proton at Fermilab. By measuring the unpolarized Drell-Yan process, we can study quark spin-orbit effects
which supplement what can be learned in the polarized Drell-Yan process. For many jet related measurements fragmentation functions arenecessary to gain spin and or flavor sensitivity. Those are currently extracted by some of us using the Belle data. In addition to using thefragmentation results with RHIC measurements, they will also provide the basis of several of the key measurements to be performed at theelectron-ion collider.
(2)

Experimental study of quark-gluon plasma using RHIC heavy ion collider[See also RIKEN-BNL Research Center Experimental Group for the activities at BNL]

We have completed several key measurements in the study of quark-gluon plasma at RHIC. As the top of them, we leadthe analysis of the first thermal photon measurement in heavy ion collisions. The measurement indicates that the initial
temperature reached in the central Au+Au collision at 200 GeV is about 350MeV, far above the expected transition
temperature Tc~170MeV, from hadronic phase to quark-gluon plasma. This work was rewarded by Nishina Memorial Prizegiven to Y. Akiba in 2011. We also measured direct photons in d+Au and direct photon flow strength v2 and v3 in Au+Au.
We lead measurement of heavy quark (charm and bottom) using VTX, a 4 layer silicon vertex tracker which we jointly
constructed with US DOE. The detector was installed in PHENIX in 2011. Analysis of heavy quark using the silicon vertex
detector is ongoing. The final results of the 2011 run was published in Physical Review C (PRC93, 034904 (2016). This is the- 322 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

first publication from VTX. The result showed that the electrons from bottom quark decay is suppressed for pT>4 GeV/c, but
the suppression factor is smaller than that of charm decay electrons for 3<pT<4 GeV/c. This is the first observation of bottom
electron suppression in heavy ion collisions, and the first result that shows the bottom and charm suppression is different.
PHENIX recorded approximately 10 times more data of Au+Au collisions in the 2014 run than the 2011 run. We reportpreliminary results of about 1/4 of the 2014 data in QM2017 conference, confirming the published results with 3 times ofstatistics. PHENIX recorded high statistics p+p and p+A data in 2015, and the doubled the Au+Au in 2016. PHENIX
concluded its data taking in the 2016 run.
In Wako we are operating a cluster computer system (CCJ) specialized to analyze huge data sets taken with the PHENIX
detector. It consists of 28 nodes (18 old nodes and 10 new nodes) each of which has two CPUs and 10 sets of local disk fordata repository (old node: quad-core CPU, 1TB disk, new node: six-core CPU, 2TB disk). There are 264 CPU cores and 380
TB disks in total. This configuration ensures the fastest disk I/O when each job is assigned to the node where the required
data sets are stored. It is also important that this scheme doesn't require an expensive RAID system and network. Through thisdevelopment we have established a fast and cost-effective solution in analyzing massive data.
0.9 PB of data for the PHENIX experiment is stored in a hierarchical storage system which is a part of HOKUSAI
GreatWave supercomputer system operated by the Advanced Center for Computing and Communication (ACCC). ACCC
also provides 10 dedicated PC nodes for CCJ.
(3)

Study of properties of mesons and exotic hadrons with domestic accelerators

Preparation of the experiment E16 at J-PARC 50-GeV PS is underway with several Grant-in-Aids. This experiment aims
to perform a systematic study of the spectral modification of low-mass vector mesons in nuclei to explore the chiralsymmetry breaking in dense nuclear matter, namely, the mechanism proposed by Nambu to generate the major part of hadronmass.
Gas Electron Multiplier (GEM) technology is adopted for the two key detectors, GEM Tracker (GTR) and Hadron-blind
Cherenkov detector (HBD). With cooperation with Japanese industries, large GEM foils (30cm x 30cm, the world-largest sizeat that time) were newly developed. We have joined the CERN-RD51 collaboration for the joint-development of the GEM
and its readout technology. For the electron ID, lead-glass calorimeter (LG) is also used. The lead-glass blocks are recycledfrom the TOPAZ experiment. The development phase of the detectors is over and we are in the production phase. The partsfor six modules of GTR and two modules of HBD are delivered and some of their assemblies have started. The “Scalable
Readout System” developed by RD51 is adopted and purchased for the readout electronics modules of GEM. For LG readout,
a flush ADC module using DRS4 ASIC has been developed and the first batch of production was delivered. Trigger logic
modules and the trigger preamp ASIC are still under the test.
Due to the budgetary limitation, we aim to install a part of detectors, eight modules of GTR/HBD/LG out of 26 modules
in the full installation, at the beginning of experiment. The construction of the beam line will be completed in 2019, with asignificant delay from the original plan which aimed for March 2016. The yield of phi mesons and sensitivity to the possible
spectral modification with the eight-module configuration under the expected high-rate environment was evaluated by the
Geant4 simulation including the achieved performance of each detector and by using a newly-developed GEM-signal
simulator.
(4)

Detector development for PHENIX experiment
The PHENIX experiment proposes substantial detector upgrades to go along the expected accelerator improvements, including thefuture electron-ion collider “eRHIC”. The present PHENIX detector is repurposed to the sPHENIX (super PHENIX) detector replacing thepresent magnet with the Babar solenoid magnet at SLAC, and will be covered by the hadronic calorimeter which was absent in present
RHIC experiment. The sPHENIX project is now funded by DOE, and RIKEN will participate in the construction of the inner silicon
tracker.
We are considering to build an open-geometry forward spectrometer to be added to the sPHENIX detector. With this addition the
fsPHENIX (sPHENIX with forward) detector will have both hadronic and electromagnetic calorimetry as well as tracking in the forward
rapidity, which is suited to full reconstruction of p+A and p+p collisions. .The fsPHENIX detector will further improved to the ePHENIX
detector in the era of eRHIC.

(5)Development of beam source
Under the collaboration with Brookhaven National Laboratory, we are developing various techniques for a laser ion source (LIS) to
provide high quality heavy-ion beams to the accelerators. In 2014, we installed a new LIS which provides various species of singly charged
ions to the RHIC-AGS complex. Since the beam commissioning was very successful, the LIS was upgraded to provide high repetition rate
Au beam to the RHIC in 2015. At the moment, all the ion beams except proton, neon and uranium are being supplied by the LIS and thecapability of the fast switching species contributes enhanced versatility and uniqueness of the at the RHIC-AGS. Besides, we are studying
the highly charged ionization and magnetic field confinement of laser ablation plasma, and testing a linear accelerator model which
selectively accelerates charge states.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESMembers
Chief Scientist (Lab. Head)
Hideto EN’YO (Director, RNC)
Vice Chief Scientist
Yasuyuki AKIBA
Research & Technical Scientists
Yasushi WATANABE (Senior Research Scientist)
Yuji GOTO (Senior Research Scientist)
Itaru NAKAGAWA (Senior Research Scientist)
Satoshi YOKKAICHI (Senior Research Scientist)

Ralf SEIDL (Senior Research Scientist)
Hiroaki ONISHI (Senior Research Scientist, concurrent;
Advanced Meson Science Lab.)

Research Associates
 Yusuke KOMATSU
Foreign Postdoctoral Researchers
Sanghwa PARK
Junior Research Associates
Yuko SEKIGUCHI (Univ. of Tokyo)
Koki KANNO (Univ. of Tokyo)
Wataru NAKAI (Univ. of Tokyo)
Tomoya HOSHINO (Hiroshima Univ.)
Shunsuke IKEDA (Tokyo Tech.)
Masafumi KUMAKI (Waseda Univ.)

Satoshi YANO (Hiroshima Univ.)
Daisuke WATANABE (Univ. of Tsukuba)
Kohei TERASAKI (Univ. of Tokyo)
Kazuya NAGASHIMA (Hiroshima Univ.)
Hikari MURAKAMI (Univ. of Tokyo)
Hiroshi NAKAGOMI (Univ. of Tsukuba)

International Program Associates
Inseok YOON (Seoul Nat’l Univ.)
Minjung KIM (Seoul Nat’l Univ.)
Minho KIM (Korea Univ.)

Taebong MOON (Yonsei Univ.)
Se Young HAN (Ewha Womans Univ.)
Jaehee YOO (Korea University)

Senior Visiting Scientists
Toshiaki SHIBATA (Tokyo Tech.)Takashi NAKANO (Osaka Univ.)

Visiting Scientists
Kyoichiro OZAWA (KEK)
Susumu SATO (JAEA)
Megumi NARUKI (Kyoto Univ.)
Yoshinori FUKAO (KEK)
Michiko SEKIMOTO (KEK)
Kiyoshi TANIDA (JAEA)
Hirotsugu KASHIWAGI (National Institute forQuantum and Radiological Science and Technology)
Taku GUNJI (Univ. of Tokyo)
Junpei TAKANO (KEK)
Kazuya AOKI (KEK)
Masashi KANETA (Tohoku Univ.)
Munehisa OHTANI (Kyorin Univ.)
Yorito YAMAGUCHI (Univ. of Tokyo)
Youngil KWON (Yonsei Univ.)
Kenichi NAKANO (Tokyo Tech.)Maya SHIMOMURA (Nara Women’s Univ.)
Noriyosu HAYASHIZAKI (Tokyo Tech.)Yuhei MORINO (KEK)
Kenji FUKUSHIMA (Univ. of Tokyo)
Ryo ICHIMIYA (KEK)
Tomohiro NISHITANI (Nagoya Univ.)
Tomonori TAKAHASHI (Osaka Univ.)
Tsutomu MIBE (KEK)
Makoto KUWAHARA (Nagoya Univ.)
Masahiro OKAMURA (BNL)
Shunzo KUMANO (KEK)
Bentz WOLFGANG (Tokai Univ.)
Alexander BAZILEVSKY (BNL)
Shin-ya SAWADA (KEK)
Ryotaro MUTO (KEK)
Masanori HIRAI (Tokyo Univ. of Sci.)
Kenta SHIGAKI (Hiroshima Univ.)
Sanghwa PARK (Stony Brook University)
Robert JAMESON (Goethe Universitat Frankfurt)
Takuya SUZUKI (Waseda Univ.)

Student Trainees
Shoichiro NISHIMURA (Univ. of Tokyo)
Yuki OBARA (Univ. of Tokyo)
Mana UENO (Nagoya Univ.)
Qidong Zhou (Nagoya Univ.)
Seiya MIYATA (Univ. of Tokyo)

Yosuke UEDA (Hiroshima Univ.)
Key NAGAI (Tokyo Tech.)
Koji IGARASHI (Tokyo Tech)
Kenta SATO (Nagoya Univ.)
Kazuya NAGASHIMA (Hiroshima Univ.)

InternsJunsang PARK (Seoul Nat‘l Univ.)
Daisuke NEMOTO (Rikkyo Univ.)
Jaehee YOO (Korea University)
Hidekazu MASUDA (Rikkyo Univ.)

Naoki FUJIYAMA (Rikkyo Univ.)
Ryota KAWASHIMA (Rikkyo Univ.)
Minho KIM (Korea Univ.)- 324 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Part-time Workers
Toru NAGASHIMA (Rikkyo Univ.)
Hidemitsu ASANO
Wataru NAKAI (Univ. of Tokyo)
Yusuke KOMATSU

Hidekazu MASUDA (Rikkyo Univ.)
Koki KANNO (Univ. of Tokyo)
Michiko SEKIMOTO

AssistantKeiko SUZUKI

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
Measurement of the Vector Meson Spectral Modification in the Nuclear Medium at J-PARC. By Yusuke Komatsu et al.. JPS Conf.Proc. 13(2017) 020005.
Angular decay coefficients of J/\ mesons at forward rapidity from p+p collisions at ¥V=510$ GeV. By PHENIX Collaboration (A. Adare etal.). Phys.Rev. D95 (2017) 092003.
Measurement of the relative yields of \(2S) to \i(1S) mesons produced at forward and backward rapidity in p+p, p+Al, p+Au, and 3He+Au
collisions at ¥sNN=200 GeV. By PHENIX Collaboration (A. Adare et al.). Phys.Rev. C95 (2017) no.3, 034904.
Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisionsat¥s=510 GeV. By PHENIX Collaboration (A. Adare et al.). Phys.Rev. D95 (2017) no.7, 072002.
Measurement of long-range angular correlations and azimuthal anisotropies in high-multiplicity p+Au collisions at ¥sNN =200 GeV. By C.
Aidala et al. Phys.Rev. C95 (2017) no.3, 034910.
Measurements of double-helicity asymmetries in inclusive J/\ production in longitudinally polarized p+p collisions at ¥s =510$ GeV. By
PHENIX Collaboration (A. Adare et al.). Phys.Rev. D94 (2016) no.11, 112008.
Precision study of the Șĺȝ+ȝíȖ and Ȧĺȝ+ȝíʌ0 electromagnetic transition form-factors and of the ȡĺȝ+ȝí line shape in NA60. By
NA60 Collaboration (R. Arnaldi et al.). Phys.Lett. B757 (2016) 437-444.
Inclusive cross section and double-helicity asymmetry for S0 production at midrapidity in p+p collisions at ¥s =510$ GeV. By PHENIX
Collaboration (A. Adare et al.). Phys.Rev. D93 (2016) no.1, 011501.
Azimuthally anisotropic emission of low-momentum direct photons in Au+Au collisions at ¥sNN =200$ GeV. By PHENIX Collaboration (A.
Adare et al.). Phys.Rev. C94 (2016) no.6, 064901.
Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at ¥sNN from 62.4 GeV to 2.76 TeV. By
PHENIX Collaboration (A. Adare et al.). Phys.Rev. C93 (2016) no.2, 024911.
Transverse energy production and charged-particle multiplicity at midrapidity in various systems from ¥sNN =7.7 to 200 GeV. By PHENIX
Collaboration (A. Adare et al.). Phys.Rev. C93 (2016) no.2, 024901.
I meson production in the forward/backward rapidity region in Cu+Au collisions at ¥sNN =200$ GeV. By PHENIX Collaboration (A. Adare etal.). Phys.Rev. C93 (2016) no.2, 024904.
Centrality-dependent modification of jet-production rates in deuteron-gold collisions at ¥sNN =200 GeV. By PHENIX Collaboration (A. Adareet al.). Phys.Rev.Lett. 116 (2016) no.12, 122301.
Measurement of higher cumulants of net-charge multiplicity distributions in Au+Au collisions at ¥sNN =7.7-200$ GeV. By PHENIX
Collaboration (A. Adare et al.). Phys.Rev. C93 (2016) no.1, 011901.
Measurement of parity-violating spin asymmetries in Wí production at midrapidity in longitudinally polarized p+p collisions. By PHENIX
Collaboration (A. Adare et al.). Phys.Rev. D93 (2016) no.5, 051103.
Performance of the Low Charge State Laser Ion Source in BNL. By Masahiro Okamura et.al.10.18429/JACoW-HIAT2015-THM1C03.
Control of Laser Ablation Plasma by Pulsed Magnetic Field for Heavy Ion Beam Production. By Shunsuke Ikeda et al.
10.18429/JACoW-HIAT2015-WEPB28.
Development of a hadron blind detector using a finely segmented pad readout. By Koki Kanno et al. Nuclear Instruments and Methods inPhysics Research A, 819 (2016) 20-24.

[Proceedings](Original Papers) *Subject to Peer Review
Polarized nucleon-structure physics at RHIC-PHENIX. By Yuji Goto (PHENIX Collaboration). Proceedings of Science (Hadron 2013) 155.
Cross Section and Asymmetry Measurement of Very Forward Neutral Particle Production at RHIC. By Yuji Goto (RHICf collaboration).
International Journal of Modern Physics, Conference Series 40, 1660110 (2016).Spin Physics. By Ralf Seidl, PoS DIS2016 (2016) 007
Measurement of double helicity asymmetries (ALL) at mid- DQGIRUZDUGUDSLGLWLHVLQORQJLWXGLQDOO\SRODUL]HGSSFROOLVLRQVDWV¥ *H9
with PHENIX experiment. By Ralf Seidl and Taebong Moon, PoS DIS2016 (2016) 007
Oral Presentations[International Conference etc.] [Domestic Conference]
S. Yokkaichi (JPARC E16 collaboration), “Systematic study of the vector meson spectral modification in the nuclear medium at J-PARC” in
MENU2016, July 27th, 2016 at Kyoto, Japan.
S. Yokkaichi (JPARC E16 collaboration), “Measurements of spectral change of vector mesons in nuclear matter” in HINT2016, Dec 05th,
2016 at Tokai, Japan.
Yuji Goto, “GPDs and TMDs at Electron-Ion Collider” in Hadron Tomography at J-PARC and KEKB, Jan. 6th, 2017 at Tsukuba, Japan.
Ralf Seidl, “Spin Physics” in 24th International Workshop on Deep-Inelastic Scattering and Related Subjects, Apr. 11th, 2016, at Hamburg,- 325 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESGermany.
Ralf Seidl, “Measurement of double helicity asymmetries (ALL) in ʌ0 and ʌí production at mid-rapidity in longitudinally polarized p+p
collisions at ¥s = 510 GeV with PHENIX experiment” in 24th International Workshop on Deep-Inelastic Scattering and Related Subjects,
Apr. 13th, 2016, at Hamburg, Germany.
Ralf Seidl, “RHIC spin and Belle” in Workshop on hadron tomography, July 31st, 2016 at Kyoto, Japan.
Ralf Seidl, “The fragmentation function program at Belle” in 22th international spin symposium, Sep. 28th, 2016 at Urbana-Champaign, Il,USA.
Ralf Seidl, “The fragmentation function program at Belle” in 22th international spin symposium, Sep. 28th, 2016 at Urbana-Champaign, Il,USA.
Ralf Seidl, “Fragmentation function measurements in Belle” in KEK Hadron and nuclear physics workshop, Jan. 7th at Tsukuba, Japan.
[Domestic Conference]
Yuji Goto (RHICf collaboration), “RHICf experiment: Very forward measurement of particle production at RHIC” in Japan Physical Society
Meeting, 20th March, 2016 at Sendai, Japan
Yuji Goto (PHENIX Collaboration),”Double-KHOLFLW\DV\PPHWU\PHDVXUHPHQWRI-ȥ SURGXFWLRQLQ¥V *H9SRODUL]HGSSFROOLVLRQVDWPHENIX” in Japan Physical Society Meeting, Sep. 23rd, 2016 at Miyazaki, Japan
Ralf Seidl, “Fragmentation function measurements in Belle” in JPS Fall Meeting, Sep. 23rd, 2016 at Miyazaki, Japan.

㻌- 326 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Sub Nuclear System Research Division
Advanced Meson Science Laboratory
1. Abstract
Particles like muons, pions, and kaons have finite life times, so they do not exist in natural nuclei or matters. By implanting theseparticles into nuclei/matters, exotic phenomena in various objects can be studied from new point of view.
Kaon is the second lightest meson, which has strange quark as a constituent quark. It is expected that if one embed mesons into nuclei,
the sizes of the nuclei become smaller and one can form a high-density object beyond the normal nuclear density. Study of this object could
lead to better understanding of the origin of the mass of the matter, and may reveal the quark degree of freedom beyond thequark-confinement. The other example is the weak interaction in nuclear matter. It can only be studied by the weak decay of hypernuclei,
which have Lambda particle in the nuclei.
Muon provides even wider scope of studies, covering condensed matter physics as well as nuclear and atomic physics, and we aretrying to extend the application field further into chemical and biological studies. For instance, stopping positively charged muon in amaterial, we obtain information on the magnetic properties or the local field at the muon trapped site (PSR). Injecting negatively charged
muon to hydrogen gas, muonic hydrogen atom (Pp) is formed. We are planning to measure Pp hyperfine splitting energy to measure proton
magnetic radius, which is complementary quantity to the proton charge radius and its puzzle lately attracts strong interest. We are alsointerested in precision measurement of muon property itself, such as muon anomalous magnetic moment (g-2).
In our research, we introduce different kind of impurities into nuclei / matters, and study new states of matter, new phenomena, or theobject properties.

2. Major Research Subjects(1) Study of meson property and interaction in nuclei(2) Origin of matter mass / quark degree of freedom in nuclei(3) Condensed matter and material studies with muon(4) Nuclear and particle physics studies via muonic hydrogen(5) Development of ultra cold muon beam, and its application from material science to particle physics

3. Summary of Research Activity(1) Hadron physics at J-PARC, RIKEN-RIBF, GSI and SPring-8
Kaon and pion will shed a new insight to the nuclear physics. The recent discovery of deeply bound pionic atom enables us toinvestigate the properties of mesons in nuclear matter. At RIKEN-RIBF, we are preparing precise experimental study of the pionic atom.
We have also started next generation kaon experiments (E15 and E31) at J-PARC. In these experiments, we are aiming to determine the
KbarN interaction precisely, clarify the nature of kaon in nuclei, and /(1405) that could be K-p bound state. At Spring-8 and at GSI, we arealso aiming to study omega and eta’ nuclei. By these experiments, we aim to be a world-leading scientific research group using these lightmeta-stable particles.
(1-A) Deeply bound kaonic nuclei
We have performed experimental exploration of theoretically predicted deeply bound kaonic nuclear states, such as the <K-pp> boundstate. One of the most interesting features of the kaonic nucleus is the strong attraction of the KbarN interaction. Because of this strong
attraction, the kaon in nucleus will attract surrounding nucleons resulting in extremely high-density object, which is several times larger
than normal nuclear density. Measurement of the kaon properties at such high energy density will provide precious information on theorigin of hadron masses and the chiral symmetry breaking and its partial restoration.
The experiment J-PARC E15 aims to identify the nature of the <K-pp> bound state by the in-flight 3He(K-, n) reaction, which allows
us to investigate such state both in the formation via the missing-mass spectroscopy using the emitted neutron, and in its decay via theinvariant-mass spectroscopy by detecting decay particles from <K-pp>. For the experiment, we constructed a dedicated spectrometersystem at the secondary beam-line, K1.8BR, in the hadron hall of J-PARC.
The first physics data-taking was carried out in March and May, 2013 with 6x109 kaons on 3He target, corresponding to a ~1% of theapproved proposal. We successfully obtained semi-inclusive 3He(K-, n) X missing-mass spectrum, and found a tail structure just below themass threshold of (K- + p + p) which cannot be explained by well-known processes and backgrounds. We also demonstrated an exclusive
analysis by reconstructing 3He(K-, /p) n events. To derive more information on the KbarN interaction by the exclusive measurement, we
carried out the second physics data-taking in November-December, 2015 with 43x109 kaon on 3He target, in which 7 times more data was
accumulated. We have been analyzing the new data set focusing on the 3He(K-, /p)n channel, and a significant bump structure below the(K- + p + p) mass threshold has been observed in the /p invariant-mass spectrum. To confirm whether or not the observed structure is the<K-pp> bound state, further analysis is currently in progress.
(1-B) Precision X-ray measurement of kaonic atom
Simultaneously with the above experiment (1-A), we have performed an X-ray spectroscopy of atomic 3Gĺ2p transition of negatively
charged K-mesons captured by helium atoms. However, the energy resolution of the conventional semiconductor spectrometers is
insufficient to see the K- - nucleus potential observed by atomic levels at zero energy. This is closely related to the problem on the existenceof deeply bound kaonic states in nuclei, well below the atomic levels, and this is one of the biggest problems in strangeness nuclear physics.
Aiming to provide a breakthrough from atomic level observation, we will perform high-resolution X-ray spectroscopy of kaonic atoms at a
J-PARC hadron beam line using a novel cryogenic X-ray spectrometer: an array of superconducting transition-edge-sensor (TES)
micro-calorimeters. The spectrometer offers unprecedented energy resolution, which is about two orders of magnitude better than that of- 327 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

conventional semiconductor detectors. A spectrometer array of 240 pixels will have an effective area of about 20 mm2. Very recently, we
have performed a proof-of-principle experiment by measuring pionic-atom X rays with a TES array at the PiM1 beam line at the Paul
Scherrer Institut (PSI), and successfully demonstrated the feasibility of TES-based exotic-atom x-ray spectroscopy in a hadron-beamenvironment. Based on the results, we are preparing for the kaonic-atom experiment at J-PARC.
Another important X-ray measurement of kaonic atom would be 2Sĺ1s transition of kaonic deuteron. We have measured sametransition of kaonic hydrogen, but the width and shift from electro-magnetic (EM) value reflect only isospin average of the KbarN
interaction. We can resolve isospin dependence of the strong interaction by the measurement. We are presently preparing a proposal to
J-PARC PAC to measure kaonic deuteron X-ray.
(1-C) Deeply bound pionic atoms and K’ mesonic nuclei
We have been working on precision spectroscopy of pionic atoms systematically, that leads to understanding of hidden non-trivial
structure of the vacuum and origin of hadron masses. The precision data set stringent constraints on the chiral condensate at nuclear
medium. We are presently preparing for the systematic high precision measurement of pionic tin isotopes at RIBF. A pilot experiment was
performed in 2010, and showed a very good performance of the system. A main experiment was performed in 2014 and we achieved
unprecedented resolution with much reduced systematic errors. A new experiment is being prepared with a improved setup.
:H DUH DOVR ZRUNLQJ RQ VSHFWURVFRS\ RI Ș  PHVRQLF QXFOHL LQ *6,)$,5 7KHRUHWLFDOO\ SHFXOLDUO\ ODUJH PDVV RI Ș  LV DWWULEXWHd toUA(1) symmetry and chiral symmetry breaking. As a result, large binding energy is exSHFWHG IRU Ș  PHVRQ ERXQG VWDWHV LQ QXFOHLȘ -mesonic nuclei). First experiment was conducted in 2014 in GSI. We accumulated very high quality data in terms of the spectral
UHVROXWLRQDQGWKHVWDWLVWLFVDQGVHWFRQVWUDLQWVLQWKHȘ -nucleus interaction.
(1-D) Hadron physics at SPring-8/LEPS2
Photo production of meson in nuclei is known to be a powerful tool to investigate property of the hadron in nuclear media. For thisstudy, we started a new experimental project named LEPS2 (Laser Electron Photon at SPring-8 II) in this RIKEN Mid-term. The
experimental hutch for LEPS2 at SPring-8 was constructed in March 2011, lead by RIKEN. The Large solenoid spectrometer magnet (2.96m inner diameter x 2.22 m length) was successfully transported from BNL (US) to SPring-8 and installed into LEPS2 hutch in 2011.
One of the first physics programs is photo-production of K’ in nuclei. Especially (Jp) is most important reaction channel, where wecan perform missing mass spectroscopy by detecting forward going proton. One of the big advantages of photo-production reaction is thatthe initial reaction is expected to be much cleaner than the hadron channel.
Detector construction for the first physics program is in progress. The 4S Electro-Magnetic calorimeter has been constructed andproton counter to detect forward going proton produced via (Jp) reaction was partially installed in November 2013. Engineering run for the
first experiment was performed in December 2013 to confirm performance of our detector system. Detector construction have been
completed and 1st physics data taking was starting since 2014. Based on data collected, detail analysis to extract signal of K’-mesic nucleus,
photoproduction of K etc are in progress.
(2) Muon science at RIKEN-RAL branch
The research area ranges over particle physics, condensed matter studies, chemistry and life science. Our core activities are based on
the RIKEN-RAL Muon Facility located at the Rutherford-Appleton Laboratory (UK), which provides intense pulsed-muon beams. We havevarieW\RILPSRUWDQWUHVHDUFKDFWLYLWLHVVXFKDVSDUWLFOHQXFOHDUSK\VLFVVWXGLHVZLWKPXRQ VVSLQDQGFRQGHQVHGPDWWHUSK\VLFVby muon
spin rotation / relaxation / resonance (ȝSR).
(2-A) Condensed matter/materials studies with ȝSR
Two PSR spectrometer named CHRONUS and ARGUS are working together with ISIS standard data acquisition system, DAEII, withthe front-end control system, SECI. Running a pulse-kicker system, we can perform two independent PSR experiments in Port-2 and 4 at
the same time, splitting double-pulse to share beam between the two.
Among our scientific activities on PSR studies from year 2015 to 2017, following five subjects of material sciences are most importantachievements at the RIKEN-RAL muon facility:
1) Novel superconducting state having partial nodal gaps in the two-dimensional organic superconductor
O-[BETS]2GaCl4.
2) Tiny magnetic moments and spin structures of Ir4+, Nd3+ in carrier doped pyrochlore iridates(Nd1-xCax)2Ir2O7.
3) Magnetism and spin dynamics in superoxides CsO2, NaO2 and RbO2.
4) Magnetic properties of the nano-cluster gold in the border of macro- and micro- scale5) Effects of the spatial distributions of magnetic moments and muon positions estimated from density
functional theory (DFT) and dipole-field calculations.
(2-B) Nuclear and particle physics studies via ultra cold muon beam and muonic atoms
If we can improve muon beam emittance, timing and energy dispersion (so-called “ultra-slow muon”), then the capability of PSR
study will be drastically improved. The ultra-slow muon beam can stop in thin foil, multi-layered materials and artificial lattices, so one can
DSSO\WKHȝ65WHFKQLTXHVWRVXUIDFHDQGLQWHUIDFHVFLHQFH7KHGHYHORSment of ultra-slow muon beam is also very important as the sourceof ultra-cold (pencil-like small emittance) muon beam for muon g-2 measurement. Therefore, we have been working on R&D study.
We have been working on the “ultra-slow muon” generation by laser ionization of muonium atoms LQYDFXXP ERXQGV\VWHPRIȝ+and electron) emitted after stopping “surface muon beam” in a material. In this mid-term, we are developing two key components, namely,
high efficiency muonium generator at room temperature and high intensity ionization laser. The study of muonium generator has been donein collaboration with TRIUMF and KEK. In 2013, we demonstrated at least 10 times increase of the muonium emission efficiency byfabricating fine laser drill-holes on the surface of silica aerogel. We also developed a high power Lyman-Dlaser in collaboration with lasergroup at RIKEN. In this laser development, we succeeded to synthesize novel laser crystal Nd:YGAG, which has an ideal wavelength
property for laser amplification to generate Lyman-D by four-wave mixing in Kr gas cell. We already achieved 10 times increase of- 328 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Lyman-D generation than before. We are working on the growth of large laser amplifying crystal so we can increase the Lyman-D by 10times further. In order to fully apply these new developments to slow muon generation, we installed a new ultra-slow muon source chamber
dedicated for silica aerogel in Port-3 with new features such as spin manipulation. We already demonstrated a method of maximizing themuon stopping in silica aerogel even under muon decay background from surrounding materials by using the spin rotation of muonium
formed in aerogel.
Concerning the muonic atom, we are planning a new precise measurement of proton radius. A large discrepancy was found recently inthe proton charge radius between the new precise value from muonic hydrogen atom at PSI and those from normal hydrogen spectroscopy
and e-p scattering. We propose a precise measurement of Zemach radius (with charge and magnetic distributions combined) using the laser
spectroscopy of hyperfine splitting energy in the muonic hydrogen atom. Preparation of the hydrogen target, mid-infrared laser and muon
spin polarization detectors is in progress. We measured the delayed background in the detectors, which could overshadow the signal. We
confirmed it is low enough if a coincidence detection is used. Port-1, previously used for muon catalysed fusion, is now being converted forthe dedicated use by the proton radius measurement involving laser.

Members
Chief Scientist (Lab. Head)
Masahiko IWASAKI
Vice Chief Scientist
Katsuhiko ISHIDA
Research & Technical Scientists
Isao WATANABE (Senior Research Scientist)
Kenta ITAHASHI (Senior Research Scientist)
Haruhiko OUTA (Senior Research Scientist)

Hiroaki OHNISHI (Senior Research Scientist)
Fuminori SAKUMA (Senior Research Scientist)
Yue MA (Research Scientist)

Contract Researchers
Masaharu SATO
Special Postdoctoral Researchers
Tadashi HASHIMOTO
Sohtaro KANDA

Takahiro NISHI

Research Consultants
Yoshinori AKAISHI
Hironari MIYAZAWA

Masayasu KAMIMURA
Eiichi YAGI

Junior Research Associates
Kazuo TANAKA (Univ. of Tokyo)
Takuya SHIBUKAWA (Univ. of Tokyo)
Hirotomo HAMANO (Osaka Univ.)
Nam TRAN (Osaka Univ.)
Fahmi ASTUTI (Hokkaido Univ.)
Ryo KITAMURA (Univ. of Tokyo)

Dita PUSPITA SARI (Osaka Univ.)
Retno ASIH (Osaka Univ.)
Shu AIKAWA (Tokyo Tech.)
Shintaro TANAKA (Osaka Univ.)
Juila ANGEL (Hokkaido Univ.)

International Program Associates
Edi SUPRAYOGA (Bandung Inst. Tech.)Zhang QI (Lanzhou Univ.)
Noraina ADAM(Universiti Sains Malaysia)

Sungwon YOON (Catholic Univ. of Korea)
Saidah Sakinah Mohd Tajudin (Universiti Sains Malaysia)

Senior Visiting Scientist
Kazuhiro TANAKA (KEK)
Visiting Scientists
Toshimitsu YAMAZAKI (Univ. of Tokyo)
Mototsugu MIHARA (Osaka Univ.)
Donald George FLEMING (Univ. of British Columbia/TRIUMF)
Yasuo NOZUE (Osaka Univ.)
Takehito NAKANO (Osaka Univ.)
Tadashi ADACHI (Sophia Univ.)
Zyun Francis EZAWA (Tohoku Univ.)
Yasuyuki ISHII (Shibaura Inst. of Tech.)Johann ZMESKAL (SMI)
Risdiana (UNPAD)
Norimichi KOJIMA (Univ. of Tokyo)
Takao SUZUKI (Shibaura Inst. of Tech.)

Masami IIO (KEK)
Georg Peter BERG (Univ. of Notre Dame)
Takayuki GOTO (Sophia Univ.)
Masaya ENOMOTO (Tokyo Univ. of Sci.)
Hiroyuki FUJIOKA (Kyoto Univ.)
Takayuki KAWAMATA (Tohoku Univ.)
Lee CHOW (UCF)
Helmut WEICK (GSI)
Harry W. K. TOM (UC Riverside)
Agustinus NUGROHO (ITB)
Kawakami Kenji ROLAND (Univ. of California, Riverside)
Ichiro SHIRAKI (Univ. of Yamanashi)- 329 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESKensuke SUZUKI (Tohoku Univ.)
Kyosuke ISODA (Kagawa Univ.)
Ken SUZUKI (SMI)
Irwan DHARMAWAN (UNPAD)
Koji YOKOYAMA (Queen Marry Univ.)
Catalina Oana Curceanu(INFN)
Maryam Hassanvand(IUT)
Kazuki UENO (KEK)
Lusy SAFRIANI (UNPAD)
Hiroyuki NOUMI (Osaka Univ.)
Zhuan XU (Zhejiang Univ.)
Hiroshi TANIDA (Hiroshima Univ.)
Kenji KOJIMA (KEK)
Atsushi OKAZAWA (Univ. of Tokyo)
Tobat Parasian Irianto SARAGI (Univ. of Kassel)
Hiroko ARIGA (Hokkaido Univ.)
Yoshiki TANAKA(GSI)
Katsuhiko NISHIMURA (Univ. of Toyama)
Kenji MATSUDA (Univ. of Toyama)
Hexi SHI (LNF)
Mohamed Ismail MOHAMED IBRAHIM (USM)
Shukri SULAIMAN (USM)
Ayi BAHTIAR (UNPAD)
Eberhard WIDMANN(SMI)
Tsutomu MIBE (KEK)

Koichi ICHIMURA (Hokkaido Univ.)
Youichi IGARASHI (KEK)
Makoto YOKOYAMA (Ibaraki Univ.)
KwangYong CHOI (Chung-Ang Univ.)
Peklan TOH (Univ. Sains Malaysia)
Emma HAETTNER (GSI)
Andrea VACCHI (INFN)
Seungwon LEE (Univ. of Toyama)
Takahiro NAMIKI (Univ. of Toyama)
Naohito SAITO (KEK)
Kouichirou SHIMOMURA (KEK)
6DWRUX+,5(1=$., 1DUD:RPHQ V8QLY
Eiko TORIKAI (Univ. of Yamanashi)
Ryousuke KADONO (KEK)
Wataru HIGEMOTO (JAEA)
Yoji KOIKE (Tohoku Univ.)
Kazuhiko SATOH (Saitama Univ.)
Masaru YOSOI (Osaka Univ.)
Dai TOMONO (Kyoto Univ.)
Kazuki OHISHI (Comprehensive Res. Org. for Sci. and Soc.)
Yasuhiro MIYAKE (KEK)
Prasad Tara DAS (SUNY)Yu OISHI (KEK)
Seiko KAWAMURA(JAEA)
Hideyuki TATSUNO (Lund Univ.)

Visiting TechniciansKazuo OOYAMA (JOHO com.)
Research Fellows
Yuta SADA (Osaka Univ.)
Yuki NOZAWA (Osaka Univ.)

Natsuki HIROE (RCNP)

Student Trainees
Sohtaro KANDA (Univ. of Tokyo)
Kentaro INOUE (Osaka Univ.)
Yoshiki TANAKA (Univ. of Tokyo)
Hiroyuki YAMADA (Univ. of Tokyo)
Yuni WATANABE (Univ. of Tokyo)
Xingliang Xu (Saga Univ.)
Shingo KAWASAKI (Osaka Univ.)
Ryo KITAMURA (Univ. of Tokyo)
Kazuki MATSUI (Sophia Univ.)
Ainul Fauzeeha Binti ROZLAN (Univ. Saints Malaysia)
Saidah Sakinah Binti MOHD TAJUDIN (Univ. Saints Malaysia)
Shu AIKAWA (Tokyo Tech.)
Hiroshi HORII (Univ. of Tokyo)
Kazuya KATAYAMA (Tokyo Tech.)

Koshi KURASHIMA (Tohoku Univ.)
Tomotaka UEHARA (Saitama Univ.)
Takuro FUJIMAKI (Yamanashi Univ.)
Govinda KHANAL (Yamanashi Univ.)
Akane SAKAUE (Kyoto Univ.)
Isao YANAGIHARA (Kitasato Univ.)
Muhamad UMAR (Hokkaido Univ.)
Fahmi ASTUTI (Hokkaido Univ.)
Edi SUPRAYOGA (Bandung Inst. Tech.)Taehyung KIM (Tokyo Tech.)
Go MISHIMA (Univ. of Tokyo)
Irwan RAMLI (Hokkaido Univ.)
Harison Binti ROZAK (UTM)
Juila ANGEL (Hokkaido Univ.)

Part-time Workers
Makoto TOKUDA (Tokyo Tech.)Taehyung KIM (Tokyo Tech.)
Yuki NOZAWA (Osaka Univ.)

Fahmi ASTUTI (Hokkaido Univ.)
Takahiro NISHI (Univ. of Tokyo)
Juila ANGEL (Hokkaido Univ.)

Assistants
Tomoko IWANAMI
Yoko FUJITA

Mitsue YAMAMOTO- 330 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
Y. Sada et al., “Structure near the K-+p+p threshold in the in-flight 3He(K-,Λp)n reaction”, Prog. Theor. Exp. Phys., 051D01 (2016). DOI
10.1093/ptep/ptw040 *Y.K. Tanaka, K. Itahashi et al. (for eta-PRiME/Super-FRS collaboration), "Measurement of excitation spectra in the 12C(p,d) reaction near theη′ emission threshold", Physical Review Letters 117 (2016) 202501 *J. Äystöet al. (Super-FRS of NUSTAR@FAIR Collaboration), "Experimental program of the Super-FRS Collaboration at FAIR anddevelopments of related instrumentation", Nucl. Instrum. Meth. B376 (2016) 111-115, DOI: 10.1016/j.nimb.2016.02.042 *
N. Saito, Y. Oishi, K. Miyazaki. K. Okamura, J. Nakamura, M. Iwasaki, S. Wada, "Photoionization pathways and thresholds in generation of
Lyman-α radiation by resonant four-wave mixing in Kr-Ar mixture",
O. A. Louchev, AIP Advances 6, 095018/1-10 (2016). *Norihito Saito, Yu Oishi, Koji Miyazaki, Kotaro Okamura, Jumpei Nakamura, Oleg A. Louchev, Masahiko Iwasaki and Satoshi
Wada, ”High-efficiency generation of pulsed Lyman-α radiation by resonant laser wave mixing in low pressure Kr-Ar mixture”, Optics
Express 24, 7566 (2016); DOI:10.1364/OE.24.007566 *[Proceedings](Original Papers) *Subject to Peer Review
T. Yamaga et al., “Study of the elementary (K-, n) reactions to search for the KbarNN bound state via the 3He(K-, n) reaction at J-PARC”,
Proceedings of XVI International Conference on Hadron Spectroscopy (Hadron2015), AIP Conf. Proc. 1735, 040007 (2016). *Yuni N. Watanabe et al.," Spectroscopy of Pionic Atoms Via (p, 2He) Reaction", JPS Conf.Proc. 13 (2017) 020015
Kenta Itahashi et al. (Ș-PRiME/SuperFRS Collaboration), "Excitation Spectra of Carbon NucOHLQHDUȘƍ(PLVVLRQ7KUHVKROG", JPS Conf. Proc.
13 (2017) 020030, DOI: 10.7566/JPSCP.13.020030 *Kenta Itahashi et al., "Precision spectroscopy of pionic atoms and chiral symmetry in nuclei", EPJ Web Conf. 130 (2016) 01017, DOI:
10.1051/epjconf/201613001017 *Yoshiki K. Tanaka et al., "6HDUFKIRUȘƍPHVLFQXFOHLE\PLVVLQJ-mass spectroscopy of the 12C(p,d) reaction", EPJ Web Conf. 130 (2016)
02010 *
Hiroyuki Fujioka, Tomokazu Fukuda, Toru Harada, Emiko Hiyama, Kenta Itahashi, Shunsuke Kanatsuki, Tomofumi Nagae, Takuya Nanamura,
Takahiro Nishi , "Search for Tetraneutron by Pion Double Charge Exchange Reaction at J-PARC" , JPS Conf.Proc. 13 (2017) 020058, DOI:
10.7566/JPSCP.13.020058 *Oral Presentations[International Conference etc.]
F.Sakuma, "Experimental studies on the KbarN interaction", International Workshop on Strangeness Nuclear Physics 2017 (SNP2017), ,Osaka, March 2017
K.Inoue, "Analysis status of d(K-Q ʌȈ DW --PARC K1.8BR beam line", International Workshop on Strangeness Nuclear Physics 2017
(SNP2017), , Osaka, March 2017
M.Iwasaki, "News about Latest Experiment at J-PARC", 55th International Winter Meeting on Nuclear Physics, Bormio, Italy, January 2017
H.Outa, "Search for Deeply-bound K-pp States in 3He(K- ȁS Q 5HDFWLRQ - Recent Results from J-PARC E15 Experiment -", International
Symposium on Neutron Star Matter (NSMAT2016), Sendai, November 2016
T.Yamaga, "Improved 3He(K-ȁS Q6SHFWURVFRS\WR6HDUFKIRUWKH.EDU11%RXQG6WDWHZLWK--PARC E15-2nd Data", The 26th International
Nuclear Physics Conference (INPC2016), Adelaide, Australia, September 2016
M.Iwasaki, "Kaonic nuclear state search by kaon reaction on 3He target at 1GeV/c", Meson in Nucleus 2016 (MIN16), Kyoto, August 2016
T.Yamaga, "Recent result of an exclusive measurement of 3He(K-ȁS Q UHDFWLRQ WR VHDUFK IRU .barNN bound state at J-PARC", The 14th
International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU2016), Kyoto. July 2016
F.Sakuma, "KbarNN bound state search at J-PARC", The 14th International Conference on Meson-Nucleon Physics and the Structure of the
Nucleon (MENU2016), Kyoto, July 2016
S.KawasDNL6SHFWURVFRSLFH[SHULPHQWRIȁ  YLDLQ-flight d(K-,n) reaction at J-PARC K1.8BR", The 14th International Conference on
Meson-Nucleon Physics and the Structure of the Nucleon (MENU2016), Kyoto. July 2016
K.Itahashi, Transregio symposium, Bonn, 2016
K. Itahashi, "Meson-nuclear bound states", The 71st Fujihara Seminar, Shimoda, July 2016
K. Itahashi, "Precision spectroscopy of pionic atoms and chiral symmetry in nuclei", 14th International WOrkshop on Meson Production,
Properties and Interaction (MESON 2016), Krakow, June 2016
[Domestic Conference]
K. Itahashi, "ʌ ୰㛫ᏊཎᏊࠊȘ'୰㛫ᏊཎᏊ᰾ศගᐇ㦂", ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍, ᮾ໭Ꮫ㝔኱Ꮫ, 3 ᭶(2016)
Y.Ma, "Study of KbarN interaction at J-PARC K1.8BR beam line", ELPH ◊✲఍ࠕ࣐ࣝࢳࣇ࣮ࣞࣂ࣮࡛᥈ࡿ࢚࢟ࢰࢳࢵࢡࣁࢻࣟࣥ࡜ࣁࢻࣟࣥከ య⣔ࡢ≀⌮ࠖ, ᮾ໭኱Ꮫ, ௝ྎ, 12 ᭶(2016)
ᒣᡃᣅᕭ, "[ࢩ࣏ࣥࢪ࣒࢘:K ୰㛫Ꮚࢡࣛࢫࢱ࣮࡜㧗ᐦᗘ≀㉁࡬ࡢᒎ㛤] K-pp ࢡࣛࢫࢱ࣮ᐇ㦂◊✲ࡢ᭱๓⥺", ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍,኱㜰኱Ꮫ, ኱㜰, 3 ᭶(2017)ᕝ㷂᪂࿃, "J-PARC K1.8BR ࣅ࣮࣒ࣛ࢖ࣥ࡟࠾ࡅࡿ d(K-,n)཯ᛂ࡟ࡼࡿ ȁ  ⢏Ꮚ ࡢ⢭ᐦศගᐇ㦂ࡢ ʌ0Ȉ0 ⤊≧ែ࡟㛵ࡍࡿゎᯒ≧ἣ", ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰኱Ꮫ, ኱㜰, 3 ᭶(2017)- 331 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESSub Nuclear System Research Division
RIKEN-BNL Research Center
1. Abstract
The RIKEN BNL Research Center was established in April 1997 at Brookhaven National Laboratory with Professor T. D. Lee ofColumbia University as its initial Director. It is funded by the Rikagaku Kenkyusho (RIKEN, The Institute of Physical and Chemical
Research) of Japan. The Center is dedicated to the study of strong interactions, including spin physics, lattice QCD and RHIC physics
through the nurturing of a new generation of young physicists. Professor Lee was succeeded by BNL Distinguished Scientist, N. P. Samios,
who served until 2013. The current director is Dr. S. H. Aronson. After strong and significant leadership for 4 years, S. Aronson steps downfrom Director in March 31st 2017. Hideto En’yo succeeds as an acting Director from JFY 2017.Support for RBRC was initially for five
years and has been renewed three times, and presently extends to 2018. The Center is located in the BNL Physics Department. The RBRC
Theory Group activities are closely and intimately related to those of the Nuclear Theory, High Energy Theory, and Lattice Gauge Theory
Groups at BNL. The RBRC Experimental Group works closely with Radiation Laboratory at RIKEN, Wako, the RHIC Spin Group at
BNL, the RHIC Spin Physics community, and the PHENIX collaboration. BNL provides office space, management, and administrative
support. In addition, the Computational Science Center (CSC) and Information Technology Division (ITD) at BNL provide support forcomputing, particularly the operation and technical support for the RBRC 400 Teraflop QCDCQ (QCD Chiral Quark) lattice gauge theory
computer. The Deputy Director of RBRC is R. Pisarski (BNL). D. Kharzeev (Stony Brook/BNL) is leader of the Theory Group. Y. Akiba(RIKEN) is Experimental Group leader with A. Deshpande (Stony Brook) deputy. T. Izubuchi (BNL) is Computing Group leader.

2. Major Research Subjects
Major research subjects of the theory group are(1) Heavy Ion Collision(2) Perturbative QCD(3) Phenomenological QCD
Major research subjects of the computing group are(1) Search for new law of physics through tests for Standard Model of particle and nuclear physics(2) Dynamics of QCD and related theories(3) Theoretical and algorithmic development for lattice field theories, QCD machine design
Major research subject of the experimental group are(1) Experimental Studies of the Spin Structure of the Nucleon(2) Study of Quark-Gluon Plasma at RHIC
(3) sPHENIX detector construction as

3. Summary of Research Activity
Summary of Research Activities of the three groups of the Center are given in the sections of each group.

Members
Director
Samuel H. ARONSON
Deputy Director
Robert PISARSKI
Administrative Staff
Kazunori㻌 Mabuchi (Administration Manager, Nishina Center
Planning Office)Yasutaka AKAI (Deputy Administration Manager, Nishina Center
Planning Office)- 332 -

Colleen MICHAEL (Administrative Assistant)
Pamela ESPOSITO (Administrative Assistant)

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Sub Nuclear System Research Division
RIKEN-BNL Research CenterTheory Group
1. Abstract
The efforts of the RBRC theory group are concentrated on the major topics of interest in High Energy Nuclear Physics. This includes:
understanding of the Quark-Gluon Plasma; the nature of dense quark matter; the initial state in high energy collisions, the Color Glass
Condensate; its evolution through a Glasma; spin physics, as is relevant for polarized hadronic collisions; physics relevant toelectron-hadron collisions.
Theory Group hosted many joint tenure track positions with universities in U.S. and Japan.

2. Major Research Subjects
(1)
(2)
(3)

Heavy Ion Collision
Perturbative QCD
Phenomenological QCD

3. Summary of Research Activity(1) Spin Physics
The experimental program at RBRC is strongly focused on determining the origin of spin in the proton and neutron. To extract the spin
content of nucleon requires both precise data and precise computation. Dr. Jianwei Qiu of the Nuclear Theory group is one of the world’s
leading theorists in perturbative QCD, and leading the effort at BNL in spin physics. Their effort will continue to concentrate on computing
perturbative QCD effects to sufficient precision that one can reliably extract information from the evolving experimental program. In
addition they are developing ideas which might be tested in an electron-hadron collider, such as the one proposed to be built by adding anelectron ring to RHIC.

(2) Matter at High Energy Density
The RHIC experimental heavy ion program is designed to study the properties of matter at energy densities much greater than that of
atomic nuclei. This includes the initial state of nucleus-nucleus collisions, the Color Glass Condensate, the intermediate state to which it
evolves, the Glasma, and lastly the thermal state to which it evolves, the Quark-Gluon Plasma. Theorists at the RBRC have madeimportant contributions to all of these subjects.
Matter at high temperature has been studied by a variety of techniques involving both numerical and analytic methods. Much of thehigh precision work on numerical simulations of lattice QCD at nonzero temperature and density such matter have been done by membersof the Lattice Gauge Theory Group at BNL, including Frithjof Karsch, Peter Petreczsky, Swagato Mukherjee, and postdoctoral assistants.
These groups, along with collaborators at Columbia University, the University of Bielefeld, and other groups, have computed numerous
properties of QCD in thermodynamic equilibrium. This includes the equation of state for physical quark masses, susceptibilies with respect
to quark chemical potentials, and transport coefficients.
Phenomenological theories of the Quark-Gluon Plasma, based upon results from lattice simulations, have been developed by R.
Pisarski of the Nuclear Theory Group, in collaboration with Dr. Y. Hidaka (previously of RBRC/BNL, and now a permanent member at
RIKEN in Waco), Shu Lin, Daisuke Sato, and other postdoctoral research assistants at RBRC/BNL.
The theory of the Color Glass Condensate and Glasma was largely developed by RBRC scientists. This theory has been successfully
applied to a wide variety of experimental results involving high energy collisions of hadrons, electrons and nuclei. There is recent data on
heavy ion collisions that are naturally explained by such matter, including data on proton (or deuteron) nucleus collisions. Much of theeffort here will be aimed towards excluding or verifying the Color Glass Condensate and Glasma hypothesis in RHIC and LHC
experiments.
Thermal matter at high temperature and baryon density has been traditionally conjectured to be of two phases: confined anddeconfined, with a direct correlation between deconfinement and the restoration of chiral symmetry. RBRC scientists have recently
conjectured a third phase, of quarkyonic matter. This is baryonic matter at energy densities very high compared to the QCD scale. It has apressure and energy density typical of quarks, yet it is confined. The name arises because it shares properties of confined baryonic matterwith unconfined quark matter. This hypothesis is new and predicts new classes of phenomena that might be observed in collisions of nucleiof relatively low energy at RHIC. There are a number of first principle theoretical issues also to be understood.
Efforts on RHIC phenomenology proceed on a broad front. Recent efforts include improving hydrodynamic computations using stateof the art equations of state derived from lattice gauge theory. Understanding the nature of matter at high baryon number density has
generated the idea of Quarkyonic Matter, that may have implications for an upcoming low energy run at RHIC and eventual experiments inthe future at FAIR and NICA. An issue being studied is the nature of mass generation and the breaking of translational invariance. A central
focus of work at RBRC, the Color Glass Condensate and the Glasma, matter that controls the high energy limit of QCD, is being realized inexperiments at RHIC. Much activity focuses on the relation between observations at LHC and the implications made at RHIC.

- 333 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESMembers
Group Leader (Lab. Head)
Dmitri KHARZEEV
Deputy Group Leader
Robert PISARSKI (concurrent䠖Deputy Director, RBRC)
RBRC Researchers
Jinfeng LIAO (RHIC Physics Fellow)
Ho-Ung YEE (RHIC Physics Fellow)
Yuya TANIZAKI (Special Postdoctoral Researcher)
Hiromichi Nishimura (Special Postdoctoral Researcher)

Daniel PITONYAK (Research Associates)
Vladimir SKOKOV (Special Postdoctoral Researcher)
Ryutaro FUKUDA (Junior Research Associate)

Visiting Scientists
Koichi Hattori㻌 (Fudan Univ.)- 334 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Sub Nuclear System Research Division
RIKEN-BNL Research CenterComputing Group
1. Abstract
The computing group founded in 2011 as a part of the RIKEN BNL Research Center established at Brookhaven National Laboratory
in New York, USA, and dedicated to conduct researches and developments for large-scale physics computations important for particle andnuclear physics. The group was forked from the RBRC Theory Group.
The main mission of the group is to provide important numerical information that is indispensable for theoretical interpretation ofexperimental data using the theories of particle and nuclear physics. Their primary area of research is lattice quantum chromodynamics(QCD), which describes the sub-atomic structures of hadrons, which allow us the ab-initio investigation for strongly interacting quantum
field theories beyond pertrubative analysis.
The RBRC group and its collaborators have emphasized the necessity and importance of precision calculations, which will precisely
check the current understandings of nature, and will have a potential to find a physics beyond the current standard model of fundamental
physics. We have therefore adopted techniques that aim to control and reduce any systematic errors. This approach has yielded many
reliable results.
The areas of the major activities are R&D for high performance computers, developments for computing algorithms, and researches ofparticle, nuclear, and lattice theories. Since the inception of RBRC, many breakthroughs and pioneering works has carried out incomputational forefronts. These are the use of the domain-wall fermions, which preserve chiral symmetry, a key symmetry forunderstanding nature of particle nuclear physics, the three generations of QCD devoted supercomputers, pioneering works for QCD
calculation for Cabibbo-Kobayashi-Maskawa theory, QCD+QED simulation for isospin breaking, novel algorithm for error reduction in
general lattice calculation. Now the chiral quark simulation is performed at the physical up, down quark mass, the precision for many basic
quantities reached to accuracy of sub-percent, and the group is aiming for further important and challenging calculations, such as the full
DQGFRPSOHWHFDODXWLRQIRU.ĺʌʌGHFD\İ¶İRUKDGURQLFFRQWULEXWLRQVJRPXRQ¶VDQRPDORXVPDJQHWLFPRPHQWRU1XFOHRQ¶VVKDSHDQG
structures related to physics for future Electron Ion Collider (EIC).

2. Major Research Subjects
(1)
(2)
(3)

Search for new law of physics through tests for Standard Model of particle and nuclear physics, especially in the framework of the
Cabibbo–Kobayashi–Maskawa (CKM), hadronic contributions to the muon's anomalous magnetic moment (g-2).
Dynamics of QCD and related theories, including study for the structures of nucleons related to physics for Electron Ion Collider(EIC or eRHIC).
Theoretical and algorithmic development for lattice field theories, QCD machine design.

3. Summary of Research Activity
In 2011, QCD with Chiral Quarks (QCDCQ), a third-generation lattice QCD computer that is a pre-FRPPHUFLDOYHUVLRQRI,%0¶V%OXH
GenH4 ZDV LQVWDOOHG DV DQ LQ-house computing resource at the RBRC. The computer was developed by collaboration among RBRC,
Columbia University, the University of Edinburgh, and IBM. Two racks of QCDCQ having a peak computing power of 2 × 200 TFLOPS
are in operation at the RBRC. In addition to the RBRC machine, one rack of QCDCQ is owned by BNL for wider use for scientific
FRPSXWLQJ,QUDFNRI%OXH*HQH4LVDOVRLQVWDOOHGE\86-wide lattice QCD collaboration, USQCD. The group has also used the
IBM Blue Gene supercomputers located at Argonne National Laboratory and BNL (NY Blue), and Hokusai and RICC, the super computers
at RIKEN (Japan), Fermi National Accelerator Laboratory, the Jefferson Lab, and others. From 2016, the group started to use theinstitutional cluster both GPU and Intel KnightLanding (KNL) clusters installed at BNL extensively.
Such computing power enables the group to perform precise calculations using up, down, and strange quark flavors with proper
handling of the important symmetry, called chiral symmetry, that quarks have. The group and its collaborators carried out the first
calculation for the direct breaking of CP (Charge Parity) symmetry in the hadronic K meson decay (K䊻䃟䃟) amplitudes, 䃔¶䃔, whichprovide a new information to CKM paradigm and its beyond. They also SURYLGHWKHKDGURQLFFRQWULEXWLRQLQPXRQ¶VDQRPDORXVPDJQHWLF
¶䃔, hadronic light-by-light of (g-2), are long waited calculation in theoretical physics delivered formoment (g-2)䃛. These calculation for 䃔
the first time by the group. The K䊻䃟䃟 result in terms of 䃔¶䃔currently has a large error, and deviates from experimental results by 2.1 䃢.
Hadronic Light-by-light contribution to (g-2)䃛㻌 is improved by more than two order of magnitudes compared to our previous results. Other
projects including flavor physics in the framework of the CKM theory for kaons and B mesons that include the new calculation of b-baryon
decay, 䂻b䊻p; the electromagnetic properties of hadroQVWKHSURWRQ¶VDQGQHXWURQ¶Vformfactors and structure function including electric
dipole moments; proton decay; nucleon form factors, which are related to the proton spin problem; Neutron-antineutron oscillations; 䃣
inclusive decay; nonperturbative studies for beyond standard model such composite Higgs or dark matter models from strong stronglyinteracting gauge theories; a few-body nuclear physics and their electromagnetic properties; and QCD thermodynamics in finite
WHPSHUDWXUHGHQVLW\V\VWHPVVXFKDVthose produced in heavy-ion collisions at the Relativistic Heavy Ion Collider.

- 335 -

RIKEN Accel. Prog. Rep. 50 (2017)

Figure :Ⅵ. RNC ACTIVITIES

Hadronic inclusive decay of tau lepton (left), the new results of CKM matrix element Vus(right).

Table: Summery of current physics program and their impacts

Figure: Renormalization of quasi Parton Distribution Function (PDF) operator (left), preliminary result of pion PDF (right)- 336 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

The RBRC group and its collaborators have emphasized the necessity and importance of precision calculations, which will precisely
check the current understandings of nature, and will have a potential to find physics beyond the current standard model of fundamental
physics. We have therefore adopted techniques that aim to control and reduce any systematic errors. This approach has yielded many
reliable results, many of basic quantities are now computed within sub-percent accuracies.
The group also delivers an algorithmic breakthrough, which speed up generic lattice gauge theory computation. In this novel
technique called All Mode Averaging (AMA), the whole calculation is divided into frequent approximated calculations, and infrequent
expensive and accurate calculation using lattice symmetries. Together with another formalism, zMobius fermion, which approximate chirallattice quark action efficiently, the typical calculation is now improved by a couple of orders of magnitudes compared to the traditional
methods.

Members
Group Leader (Lab. Head)
Taku IZUBUCHI
RBRC Researcher
Tomomi ISHIKAWA (RIKEN BNL Fellow)
Yasumichi AOKI (RIKEN BNL Fellow, KEK)
Brian TIBURZI (RHIC Physics Fellow)
Ethan NEIL (RHIC Physics Fellow)

Stefan MEINEL (RHIC Physics Fellow)
Hiroshi OKI (Special Postdoctoral Researcher)
Sergey SYRITSYN (Special Postdoctoral Researcher)
Enrico RINALDI (Special Postdoctoral Researcher)

Visiting Scientists
Yasumichi AOKI (Nagoya Univ.)
Thomas BLUM (Univ. of Connecticut)
Chulwoo JUNG (BNL)
Christoph LEHNER (BNL)
Meifeng LIN (Yale Univ.)

Robert MAWHINNEY (Columbia)
Shigemi OHTA
Sergey SYRITSYN (Thomas Jefferson National Laboratory)
Tomomi ISHIKAWA (Shanghai Jiao-Tong Univ.)

List of Publications & Presentations
Publications[Journal](Original Papers)[ * Currently subject to peer review ]Thomas Blum, Norman Christ, Masashi Hayakawa, Taku Izubuchi, Luchang Jin, Chulwoo Jung, and Christoph Lehner“Connected and Leading Disconnected Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment with a Physical Pion
Mass”, Phys. Rev. Lett. 118, 022005 – Published 11 January 2017.
7%OXP3$%R\OH/'HO'HEELR5-+XGVSLWK7,]XEXFKL$-WWQHU&/HKQHU5/HZLV.0DOWPDQ0.UVWLü0DULQNRYLü$3RUWHOOL0. Spraggs,“Lattice calculation of the leading strange quark-connected FRQWULEXWLRQ WR WKH PXRQ JíJí´ Published in JHEP 1604 (2016) 063,
Erratum: JHEP 1705 (2017) 034
T. Blum , P.A. Boyle, T. Izubuchi, L. Jin, A. Jüttner, C. Lehner, K. Maltman, M. Marinkovic, A. Portelli, M. Spraggs, “Calculation of thehadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment “, Published in Phys.Rev.Lett. 116(2016) no.23, 232002
Eigo Shintani, Thomas Blum, Taku Izubuchi, Amarjit Soni, “Neutron and proton electric dipole moments from Nf=2+1Nf=2+1 domain-wall
fermion lattice QCD”, Phys.Rev. D93 (2016) no.9, 094503
Michael G. Endres, Andrea Shindler, Brian C. Tiburzi, Andre Walker-Loud, “Massive photons: an infrared regularization scheme for lattice
QCD + QED”, Physical Review Letters, Volume 117, Article 072002, 2016/8/10*
Matthew E. Matzelle, Brian C. Tiburzi, “Finite-volume corrections to electromagnetic masses for larger-than-physical electric charges”,
Physical Review D Volume 95, Article 094510 2017/5/30*
Asumpta Parreño, Martin J. Savage, Brian C. Tiburzi, Johnas Wilhelm, Emmanuel Chang, William Detmold, Kostas Orginos(NPLQCD Collaboration), “Octet baryon magnetic moments from lattice QCD: Approaching experiment from a three-flavor symmetric point”,
Physical Review D, in press, 2017*
Martin J. Savage, Phiala E. Shanahan, Brian C. Tiburzi, Michael L. Wagman, Frank Winter, Silas R. Beane, Emmanuel Chang, Zoreh
Davoudi, William Detmold, Kostas Orginos (NPLQCD Collaboration), “Proton-proton fusion and tritium beta decay from lattice quantum
chromodynamics”, arXiv:1610.04545v1 [hep-lat] 2016/10/14
T. DeGrand, M. Golterman, W. I. Jay, E. T. Neil, Y. Shamir and B.Svetitsky.
“Radiative contribution to the effective potential in composite Higgs models from lattice gauge theory.” Phys. Rev. D94:5, 054501 (2016).
arXiv:1606.02695.
T. DeGrand, M. Golterman, E. T. Neil and Y. Shamir. “One-loop Chiral Perturba-tion Theory with two fermion representations”, Phys. Rev.
D94:2, 025020(2016).arXiv:1605.07738.
G. D. Kribs and E. T. Neil. “Review of strongly-coupled composite dark matter models and lattice simulations”, IJMPA 31:22, 1643004(2016).arXiv:1604.04627.
Jeremy Green, Nesreen Hasan, Stefan Meinel, Michael Engelhardt, Stefan Krieg, Jesse Laeuchli, John Negele, Kostas Orginos, Andrew
Pochinsky, Sergey Syritsyn,”“Up, down, and strange nucleon axial form factors from lattice QCD”, Accepted by Phys. Rev. D
arXiv:1703.06703 [hep-lat]
A. Datta, S. Kamali, S. Meinel, A. Rashed. “Phenomenology of ȁb ĺ ȁcĲȞࡃĲ using lattice QCD calculations”, arXiv:1702.02243 [hep-ph]
Submitted to JHEP RBRC-1228- 337 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESS. Meinel.³ȁFĺȁOȞOIRUPIDFWRUVDQGGHFD\UDWHVIURPODWWLFH4&'ZLWh physical quark masses”, arXiv:1611.09696 [hep-lat] Phys. Rev.
Lett. 118, no. 8, 082001 (2017) RBRC-1216
T.Ishikawa, Y.Q.Ma, J.W.Qiu and S.Yoshida, “Practical quasi parton distribution functions,'' arXiv:1609.02018 [hep-lat] (* under peer
review)
Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett, Masafumi Kurachi, Toshihide Maskawa, Kohtaroh Miura, Kei-ichi Nagai, Hiroshi Ohki, Enrico
Rinaldi, Akihiro Shibata, Koichi Yamawaki, Takeshi Yamazaki (the LatKMI Collaboration), “Light flavor-singlet scalars and walking signals
in Nf=8 QCD on the lattice”
Y. Aoki et al. “Review of lattice results concerning low-energy particle physics “, Jul 1, 2016. 383 pp. Published in Eur.Phys.J. C77 (2017)
no.2, 112
[Proceedings](Original Papers) *Subject to Peer Review
Taku Izubuchi, Michael Abramczyk, Tom Blum, Hiroshi Ohki, Sergey Syritsyn, “Calculation of Nucleon Electric Dipole Moments Induced by
Quark Chromo-Electric Dipole Moments”, PoS LATTICE2016 (2017) 398
Kim Maltman, Renwick Hudspith, Taku Izubuchi, Randy Lewis, Hiroshi Ohki, James Zanotti. “VusVus from inclusive determinations based on
hadronic tau data”, PoS LATTICE2016 (2017) 279
Jonathan Flynn, Taku Izubuchi, Andreas Juttner, Taichi Kawanai, Christoph Lehner, Edwin Lizarazo, Amarjit Soni, Justus Tobias Tsang,
Oliver Witzel. “Form factors for semi-leptonic BB decays”, PoS LATTICE2016 (2016) 296.
Matthew Spraggs, Peter A. Boyle, Luigi Del Debbio, Taku Izubuchi, Andreas Jüttner, Christoph Lehner, Kim Maltman, Marina Krstic
Marinkovic, Antonin Portelli. “Computing the muon anomalous magnetic moment using the hybrid method with physical quark masses”,
PoS LATTICE2016 (2016) 184
Luchang Jin, Thomas Blum, Norman Christ, Masashi Hayakawa, Taku Izubuchi, Chulwoo Jung, Christoph Lehner. “The connected andleading disconnected diagrams of the hadronic light-by-light contribution to muoQJí”, PoS LATTICE2016 (2016) 181
Kim Maltman, Renwick James Hudspith, Randy Lewis, Taku Izubuchi, Hiroshi Ohki, James M. Zanotti. “Determinations of Vuu using
iQFOXVLYHKDGURQLFĲĲGHFD\GDWD´Published in Mod.Phys.Lett. A31 (2016) no.29, 1630030
Kim Maltman, Renwick J. Hudspith, Randy Lewis, Taku Izubuchi, Hiroshi Ohki, James Zanotti, “Determinations of VuV9XVIURP+DGURQLFĲ
Decay Data”, PoS FPCP2016 (2017) 023
Martin J. Savage, Phiala E. Shanahan, Brian C. Tiburzi, Michael L. Wagman, Frank Winter, Silas R. Beane, Emmanuel Chang, Zoreh
Davoudi, William Detmold, Kostas Orginos, (NPLQCD Collaboration). “Axial-current matrix elements in light nuclei from lattice QCD”,
Proceedings of the 38th International Conference on High Energy Physics, PoS (ICHEP2016), 506
Amy Nicholson, Evan Berkowitz, Chia Cheng Chang, M. A. Clark, Balint Joo, Thorsten Kurth, Enrico Rinaldi, Brian Tiburzi, Pavlos Vranas,
Andre Walker-Loud,(CalLat Collaboration), “Neutrinoless double beta decay from lattice QCD” Proceedings of the 34th International
Symposium on Lattice Field Theory, PoS (LATTICE2016), 017
C. C. Chang et al. (Fermilab Lattice/MILC Collaborations). “D-Meson Mixing in 2+1-Flavor Lattice QCD.” Proceedings of Science (LATTICE
2016).FERMILAB-CONF-17-017-T.
J. Komijiani et al. (Fermilab Lattice/MILC Collaborations). “Decay constants fB and fBs and quark masses mb and mc from HISQ
simulations.” Proceedings of Science (LATTICE 2016). FERMILAB-CONF-16-545-T.
E. Gamiz et al. (Fermilab Lattice/MILC Collaborations). “Kaon semileptonic decays with Nf = 2 + 1 + 1 HISQ fermions and physical light-quark
masses.” Proceedings of Science (LATTICE 2016). FERMILAB-CONF-16-544-T.
T. A. DeGrand, D. Hackett, W. I. Jay, E. T. Neil, Y. Shamir, and B. Svetitsky. “Towards Partial Compositeness on the Lattice: Baryons with
Fermions in Multiple Representations.” Proceedings of Science (LATTICE 2016).
N. Hasan, M. Engelhardt, J. Green, S. Krieg, S. Meinel, J. Negele, A. Pochinsky, S. Syritsyn, “Computing the nucleon Dirac radius directly at
Q2 = 0” arXiv:1611.01383 [hep-lat] PoS LATTICE 2016, 147 (2016) RBRC-1216
Luka Leskovec, Constantia Alexandrou, Giannis Koutsou, Stefan Meinel, John W. Negele, Srijit Paul, Marcus Petschlies, Andrew Pochinsky,
Gumaro Rendon, Sergey Syritsyn. “A study of the radLDWLYH WUDQVLWLRQ ʌʌ ĺ ʌȖѽ with lattice QCD” arXiv:1611.00282 [hep-lat], PoS
LATTICE 2016, 159 (2016)RBRC-1214
A. Peters, P. Bicudo, L. Leskovec, S. Meinel, M. Wagner. “Lattice QCD study of heavy-heavy-light-light tetraquark candidates”,
arXiv:1609.00181 [hep-lat], PoS LATTICE 2016, 104 (2016), RBRC-1213
S. Meinel, G. Rendon. ³/DWWLFH4&'FDOFXODWLRQRIIRUPIDFWRUVIRUȁEĺȁ  OOíGHFD\V´, arXiv:1608.08110 [hep-lat], PoS LATTICE,
2016, 299 (2016), RBRC-1203
T. Ishikawa, Y. Q. Ma, J. W. Qiu and S. Yoshida, “`Matching issue in quasi parton distribution approach”, PoS LATTICE2016, 177 (2016).
S. Syritsyn, A. Gambhir, B. Musch, K. Orginos,"Constructing Nucleon Operators on a Lattice for Form Factors with High Momentum Transfer",in proceedings of International Symposium LATTICE2016, Southampton, July 24-30; PoS LATTICE2016 (2017) 176.
T. Izubuchi, M. Abramczyk, T. Blum, H. Ohki, S. Syritsyn, "Calculation of Nucleon Electric Dipole Moments Induced by Quark
Chromo-Electric Dipole Moments", in proceedings of International Symposium LATTICE2016, Southampton, July 24-30; PoS
LATTICE2016 (2017) 398; arXiv:1702.00052.
L. Leskovec, C. Alexandrou, G. Koutsou, S. Meinel, J. W. Negele, S. Paul, M. Petschlies , A. Pochinsky, G. Rendon, S. Syritsyn, "A study of
the radiative transition pi pi to pi gamma star with lattice QCD", in proceedings of International Symposium LATTICE2016, Southampton,
July 24-30; PoS LATTICE2016 (2017) 159 ; arXiv:1611.00282.
Oral Presentations[International Conference etc.]
Taku Izubuchi. “Lattice calculation for the light-by-light hadronic contribution to muon g-2”, 14th international workshop on Tau Lepton
Physics, IHEP, Beijing, China,19-23 September.
Taku Izubuchi. “Search for beyond standard model and QCD”, the 14th international conference on Menuson-Nucleon Physics andStructure of the Nucleon MENU2016, Kyoto University, Japan July 25-30
Taku Izubuchi. “Muon g-2 Light-by-light on Lattice and Related Topics” Precision for New discoveries, TRIUMF, Vancouver, Canada, June
8-10.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Taku Izubuchi. “Muon g-2 theory status”, Flavor Physics and CP violation 2016 (FPCP) 2016, at Caltech, Pasadena, CA, June 6-9.
Taku Izubuchi, ”Muon g-2 Hadronic Light by Light: Lattice QCD”, Invited talk, Symposium on Effective Field Theories and Lattice Gauge
Theory at Institute for Advanced Study, Technical University Munich, May 18-21.
Brian C. Tiburzi. “Going to Extremes: Lattice QCD in External Fields”, Invited talk, Maryland Center for Fundamental Physics, University of
Maryland, 11/16/2016.
Brian C. Tiburzi. “Going to Extremes: Lattice QCD in External Fields”, Invited talk, Lawrence Berkeley National Laboratory, Berkeley,
California, 11/8/2016.
Brian C. Tiburzi. “New features of baryon magnetic moments uncovered from lattice QCD”, Invited talk, TP Program “Frontiers in Nuclear
Physics”, Kavli Institute for Theoretical Physics, Santa Barbara, California, 9/16/2016.
Brian C. Tiburzi. “Magnetic properties of light nuclei from lattice QCD”, Invited talk, INT Program 16-1 “Nuclear Physics from Lattice QCD”,
Institute for Nuclear Theory, Seattle, Washington, 5/15/2016.
Ethan Neil. “Lattice study of gauge theory with multiple fermion representations.”, RIKEN Lunch Seminar, Brookhaven National Laboratory,
Upton, NY. May 2017.
Ethan Neil. “Lattice Insights for Composite BSM Models.” High Energy/Cosmology Seminar, University of Wisconsin, Madison, WI. March2017.
Ethan Neil “Lattice Insights for Composite BSM Searches.” Future Colliders Seminar series, Fermilab, Batavia, IL. December 2016.
Stefan Meinel. “Heavy baryon decay form factors from lattice QCD,” International Workshop on Hadronic Contributions to New Physics
Searches, Puerto de la Cruz, Spain (invited talk) September 27, 2016.
Stefan Meinel ³)ODYRUSK\VLFVZLWKȁEEDU\RQV´WK,QWHUQDWLRQDO&RQIHUHQFHRQ+LJK(QHrgy Physics, Chicago, USA (invited talk)August 5 2016,
Stefan Meinel ³/DWWLFH4&'FDOFXODWLRQRIIRUPIDFWRUVIRUȁE Ѝ ȁ  OOíGHFD\V´WK,QWHUQDWLRQDO6\PSRVLXPRQ/DWWLFH)LHOG
Theory, University of Southampton, UK, July 29, 2016,
Stefan Meinel ³)ODYRUSK\VLFVZLWKȁEEDU\RQV´)HUPLODE7KHRU\6HPLQDU%DWDYLD86$ LQYLWHGWDON June 2, 2016.
Stefan Meinel “Heavy Baryons on the Lattice,” International Conference on the Structure of Baryons, Florida State University, Tallahassee,
USA (invited talk) May 18, 2016.
Stefan Meinel “Lattice results and outlook,” Prospects and challenges for semitauonic decays at LHCb, CERN, Geneva, Switzerland(invited talk, given remotely) April 28, 2016,
T. Ishikawa. "Matching for quasi parton distribution functions”, 22nd International Spin Symposium 2016, 25-30 September 2016, University
of Illinois, Urbana-Champaign, USA.
T. Ishikawa, "Matching issue in quasi parton distribution approach”, The 34th International Symposium on Lattice Field Theory, 24-30 July
2016, University of Southampton, UK.
S. Syritsyn, "Nucleon Form Factors at High Momentum Transfer", parallel presentation at the International Symposium LATTICE2016,
Southampton, July 24-30.
S. Syritsyn, "On Lattice Calculation of Nucleon Electric Dipole Moments", HET Lunch seminar, Brookhaven National Laboratory, March 2,
2017.
S. Syritsyn, "On Lattice Calculation of Nucleon Electric Dipole Moments", Nuclear Theory seminar at Stony Brook University, March 2,
2017.
Ohki Hiroshi. “Determination of |Vus| from hadronic tau decays”, The international workshop on future potential of high intensity
accelerators for particle and nuclear physics (HINT2016), J-PARC, Tokai-village, Ibaraki, Japan, Dec. 6, 2016.
Ohki Hiroshi. “Lattice calculation of Vus from inclusive strangeness changing tau decay”, The 14th International Workshop on Tau Lepton
Physics (Tau2016), IHEP, Beijing, September 19, 2016.
Ohki Hiroshi “Vus from inclusive strange tau decay data and lattice HVP”, The 34the International Symposium on Lattice Field Theory,
Highfield Campus, University of Southampton, July 28, 2016.
Ohki Hiroshi. “Many-flavor QCD dynamics on the lattice”, Lattice for Beyond the Standard Model Physics 2016, Argonne National
Laboratory, April 21, 2016.
E. Rinaldi, “Lattice Gauge Theory insights on Dark Matter”, at the Dark Interactions Workshop, BNL, Upton, NY, 10/06/2016
E. Rinaldi, “Dark Interactions and the Lattice”, at the Frontiers in Nuclear Physics Program, KITP, Santa Barbara, CA, 11/03/2016
E. Rinaldi, “An overview of lattice field theory applications to dark matter searches”, RIKEN lunch seminar, BNL, 11/10/2016
E. Rinaldi, “Dark Interactions and Lattice Gauge Theories”, at the Early Career Researcher Symposium, BNL, Upton, NY, 12/13/2016
E. Rinaldi, “What lattice gauge theory can do for Dark Matter searches”, at Università di Roma “La Sapienza”, Rome, Italy, 02/23/2017
E. Rinaldi, “Beyond the Standard Model Physics with Lattice Simulations”, at Università di Roma “Tor Vergata”, Rome, Italy, 03/01/2017[Domestic Conference]
Taku Izubuchi. “Lattice QCD computation for muon’s anomalous magnetic moment”, Talk at seminar, Yukawa Institute, Kyoto University,
March 24.
Taku Izubuchi. “Lattice QCD computation for muon’s anomalous magnetic moment”, Talk at seminar, Kanazawa University, March 21.
Taku Izubuchi, “Lattice QCD computation for muon’s anomalous magnetic moment” Invited talk, Japan Physics Society annual meeting,Osaka University, March 19.
㟷ᮌ ಖ㐨 “⣲⢏Ꮚ㉁㔞㉳※ࡢ⌮ㄽ᥈⣴ (Theoretical exploration of the origin of mass of elementary particles)”, ➨ 3 ᅇࠕிࠖࢆ୰ᚰ࡜ࡍ
ࡿ HPCI ࢩࢫࢸ࣒฼⏝ㄢ㢟ᡂᯝሗ࿌఍, ࢥࢡ࣮ࣚ࣍ࣝ㸦ᮾி㒔㸧2016/10/21
㟷ᮌ ಖ㐨 “QCD ࡢ᭷㝈 ᗘ┦㌿⛣࡜ࢺ࣏ࣟࢪ࣮”, ⣲⢏Ꮚ࣭ཎᏊ᰾࣭Ᏹᐂࠕி࠿ࡽ࣏ࢫࢺி࡟ྥࡅ࡚ࠖࢩ࣏ࣥࢪ࣒࢘,⟃Ἴ኱Ꮫᮾி࢟ࣕࣥ
ࣃࢫ㸦ᮾி㒔㸧2017/2/17
㟷ᮌ ಖ㐨 “᭷㝈 ᗘ 2 ࣇ࣮ࣞࣂ࣮QCD ࡢࢺ࣏ࣟࢪ࢝ࣝឤཷ⋡ (Topological susceptibility of the finite-temperature two-flavor QCD)”, ኱㜰኱Ꮫ ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ (JPS meeting 2017/3/18)
኱ᮌ ὒ. “≀㉁ඃໃᏱᐂࡢㅦゎ᫂ࡢࡓࡵࡢ᰾Ꮚᵓ㐀⢭ᐦィ⟬”, 2016 ᖺᗘ, ⌮◊ࢩ࣏ࣥࢪ࣒࢘
ࠕࢫ࣮ࣃ࣮ࢥࣥࣆ࣮ࣗࢱ࣮HOKUSAI ࡜ Shoubuࠊ◊✲㛤Ⓨࡢ᭱๓⥺ࠖ࿴ගᕷ⌮໬Ꮫ◊✲ᡤ, 2016 ᖺ 6 ᭶ 8 ᪥.
኱ᮌ ὒ. “᰾Ꮚ(chromo) EDM ₇⟬Ꮚࡢ᱁Ꮚィ⟬”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ኱㜰኱Ꮫ, March 19, 2017.

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Ⅵ. RNC ACTIVITIESSub Nuclear System Research Division
RIKEN-BNL Research CenterExperimental Group
1. Abstract
RIKEN BNL Research Center (RBRC) Experimental Group studies the strong interactions (QCD) using RHIC accelerator at
Brookhaven National Laboratory, the world first heavy ion collider and polarized p+p collider. We have three major activities: Spin Physics
at RHIC, Heavy ion physics at RHIC, and detector upgrades of PHENIX experiment at RHIC.
We study the spin structure of the proton using the polarized proton-proton collisions at RHIC. This program has been promoted by
RIKEN’s leadership. The first focus of the research is to measure the gluon spin contribution to the proton spin. Recent results from PHENIX
pi0 measurement and STAR jet measurement has shown that gluons in the proton carry about 30% of the proton spin. This is a major milestoneof RHIC spin program. The second goal of the spin program is to measure the polarization of anti-quarks in the proton using WÆe and WÆP
decays. The results of W->e measurement was published.
The aim of Heavy ion physics at RHIC is to re-create Quark Gluon Plasma (QGP), the state of Universe just after the Big Bang. Two
important discoveries, jet quenching effect and strong elliptic flows, have established that new state of dense matter is indeed produced inheavy ion collisions at RHIC. We are now studying the property of the matter. Recently, we have measured direct photons in Au+Au collisionsfor 1<pT<3 GeV/c, where thermal radiation from hot QGP is expected to dominate. The comparison between the data and theory calculations
indicates that the initial temperature of 300 MeV to 600 MeV is achieved. These values are well above the transition temperature to QGP,
which is calculated to be approximately 160 MeV by lattice QCD calculations.
We had major roles in detector upgrades of PHENIX experiment, namely, the silicon vertex tracker (VTX) and muon trigger upgrades.
Both of the upgrade is now complete. The VTX is the main device to measure heavy quark (charm and bottom) production and the muon
trigger is essential for WÆP measurement. The results from the first run with VTX detector in 2011 was published. The results show thatelectrons from bottom quark decay is strongly suppressed at high pT, but the suppression is weaker than that of charm decay electron for
3<pT<4 GeV/c. We have recorded 10 times as much Au+Au collisions data in each of the 2014 run and 2016 run. The large dataset willproduce definitive results on heavy quark production at RHIC.
PHENIX completed its data taking in 2016. We are now working on R&D of intermediate silicon tracker INTT for sPHENIX, a newexperiment at RHIC that will be installed in the PHENIX IR.

2. Major Research Subjects(1) Experimental Studies of the Spin Structure of the Nucleon(2) Study of Quark-Gluon Plasma at RHIC
(3) PHENIX detector upgrades

3. Summary of Research Activity
We study the strong interactions (QCD) using the RHIC accelerator at Brookhaven National Laboratory, the world first heavy ion collider
and polarized p+p collider. We have three major activities: Spin Physics at RHIC, Heavy ion physics at RHIC, and detector upgrades of
PHENIX experiment.
(1) Experimental study of spin structure of proton using RHIC polarized proton collider
How is the spin of proton formed with 3 quarks and gluons? This is a very fundamental question in Quantum Chromodynamics (QCD),
the theory of the strong nuclear forces. The RHIC Spin Project has been established as an international collaboration between RIKEN and
Brookhaven National Laboratory (BNL) to solve this problem by colliding two polarized protons for the first time in history. This project
also has extended the physics capabilities of RHIC.
The first goal of the Spin Physics program at RHIC is to determine the gluon contribution to proton spin. It is known that the spin ofquark accounts for only 25% of proton spin. The remaining 75% should be carried either by the spin of gluons or the orbital angularmomentum of quarks and gluons. One of the main goals of the RHIC spin program has been to determine the gluon spin contribution. Before
the start of RHIC, there was little experimental constraint on the gluon polarization, 'G.
PHENIX measures the double helicity asymmetry (ALL) of S0 production to determine the gluon polarization. Our most recent
publication of pi0 ALL measurement at 510 GeV shows non-zero value of ALL, indicating that gluons in the proton is polarized. Global
analysis shows that approximately 30% of proton spin is carried by gluons.
RHIC achieved polarized p+p collisions at 500 GeV in 2009. The collision energy increased to 510 GeV in 2012 and 2013. The main
goal of these high energy p+p run is to measure anti-quark polarization via single spin asymmetry AL of the W production. We upgraded themuon trigger system to measure WÆm decays in the forward direction. With the measurement of WÆ e and WÆP, we can cover a wide
kinematic range in anti-quark polarization measurement. The 2013 run is the main spin run at 510 GeV. PHENIX has recorded more than
150/pb of data in the run. The final results of the AL measurement in WÆ e channel in combined data of 2011 to 2013 was published. The
high statistics results give strong constraints on the polarization of anti-quarks in the proton. The analysis of WÆP is in progress.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Figure 1 Double spin asymmetry ALL in S0 production as function of transverse momentum pT. The non-zero ALL
indicates that gluons in the proton is polarized. Published in Physical Review D93,011501 (2016)

Figure 2 Single spin asymmetry AL of electrons from W and Z decays. The AL is sensitive to the polarization of antiquarks in the proton. The curves and green shaded region show theoretical calculations based on various polarized parton
distribution (PDF) sets. Published in Physical Review D93, 051103(R) (2016)(2) Experimental study of Quark-Gluon Plasma using RHIC heavy-ion collider
The goal of high energy heavy ion physics at RHIC is study of QCD in extreme conditions i.e. at very high temperature and at very highenergy density. Experimental results from RHIC have established that dense partonic matter is formed in Au+Au collisions at RHIC. The
matter is very dense and opaque, and it has almost no viscosity and behaves like a perfect fluid. These conclusions are primarily based on thefollowing two discoveries:x
Strong suppression of high transverse momentum hadrons in central Au+Au collisions (jet quenching)x
Strong elliptic flow
These results are summarized in PHENIX White paper, which has approximately 2400 citations to date.
The focus of the research in heavy ion physics at RHIC is now to investigate the properties of the matter. RBRC have played theleading roles in some of the most important results from PHENIX in the study of the matter properties. These include (1) measurements ofheavy quark production from the single electrons from heavy flavor decay (2) measurements of J/Psi production (3) measurements of dielectron continuum and (4) measurements of direct photons.
The most important recent result is the measurement of direct photons for 1<pT<5 GeV/c in p+p and Au+Au through their internalconversion to e+e- pairs. If the dense partonic matter formed at RHIC is thermalized, it should emit thermal photons. Observation of thermal
photon is direct evidence of early thermalization, and we can determine the initial temperature of the matter. It is predicted that thermal
photons from QGP phase is the dominant source of direct photons for 1<pT<3 GeV/c at the RHIC energy. We measured the direct photon inthis pT region from measurements of quasi-real virtual photons that decays into low-mass e+e- pairs. Strong enhancement of direct photon
yield in Au+Au over the scaled p+p data has been observed. Several hydrodynamical models can reproduce the central Au+A data within afactor of two. These models assume formation of a hot system with initial temperature of Tinit = 300 MeV to 600 MeV. This is the firstmeasurement of initial temperature of quark gluon plasma formed at RHIC. These results are recently published in Physical Review Letters.
Y. Akiba is the leading person of the analysis and the main author of the paper. He received 2011 Nishina memorial Prize mainly based on
this work.

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Ⅵ. RNC ACTIVITIES(3) PHENIX detector upgrade
The group had major roles in several PHENIX detector upgrades, namely, the silicon vertex tracker (VTX) and muon trigger upgrades.
VTX is a high precision charged particle tracker made of 4 layers of silicon detectors. It is jointly funded by RIKEN and the US DOE. The
inner two layers are silicon pixel detectors and the outer two layers are silicon strip detectors. Y. Akiba is the project manager and A.
Deshpande is the strip system manager. The VTX detector was completed in November 2010 and subsequently installed in PHENIX. The
detector started taking data in the 2011 run. With the new detector, we measure heavy quark (charm and bottom) production in p+p, A+A
collisions to study the properties of quark-gluon plasma. The final result of the 2011 run was published. The result show that single electrons
from bottom quark decay is suppressed, but not as strong as that from charm decay in low pT region (3<pT<4 GeV/c). This is the firstmeasurement of suppression of bottom decay electrons at RHIC and the first observation that bottom suppression is smaller than charm. We
have recorded 10 times as much Au+Au collisions data in each of the 2014 run and 2016 run. The large dataset will produce definitive results
on heavy quark production at RHIC.

Figure 3. Nuclear modification factor RAA for single electrons from charm (green band) and bottom (blue band) decays.
Published in Physical Review C93, 034904 (2016)
PHENIX completed its data taking in 2016. We are now working on R&D of intermediate silicon tracker INTT for sPHENIX, a newexperiment at RHIC that will be installed in the PHENIX IR.

Figure 4. A prototype of sensor module of INTT silicon tracker for sPHENIX experiment

Members
Group Leader (Lab. Head)
Yasuyuki AKIBA (Deputy Chief Scientist)
Deputy Group Leader
Abhay DESHPANDE
RBRC Researcher
Xiaorong WANG (RHIC Physics Fellows)
Takashi HACHIYA
Yorito YAMAGUCHI
Gaku MITSUKA

Yasushi WATANABE (RIKEN Spin Program Researcher,concurrent: Radiation Lab.)
Yuji GOTO (RIKEN Spin Program Researcher, concurrent:
Radiation Lab.)- 342 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)concurrent: Neutoron Beam Technology Team, Advanced
Photonics Technology development Group, RAP)
Satoshi YOKKAICHI (RIKEN Spin Program Researcher,concurrent: Radiation Lab.)
Ralf SEIDL (RIKEN Spin Program Researcher, concurrent:
Radiation Lab.)

Itaru NAKAGAWA (RIKEN Spin Program Researcher,concurrent: Radiation Lab.)
Takashi ICHIHARA (RIKEN Spin Program Researcher,concurrent: RI Physics Lab.)
Atsushi TAKETANI (RIKEN Spin Program Researcher,
Visiting Scientists
Stefan BATHE (Baruch College University of New York)Ady HERSHCOVITCH (RBRC Collaborating Scientist, BNL)
Akio OGAWA (BNL)

Rachid NOUICER (RBRC Collaborating Scientist)
Masahiro OKAMURA (concurrent: BNL)
Takao SAKAGUCHI (BNL)

List of Publications & Presentations
Publications[Journal](Original Papers)
G Mitsuka ”Recently measured large AN for forward neutron in pA collisions at sqrt(s)=200 GeV explained through simulations ofultraperipheral collisions and hadronic interactions”, Physical Review C95, 044908 (2017)
Oral Presentations[International Conference etc.]
Takashi Hachiya, “Recent results on open and closed heavy flavor from PHENIX at RHIC”, ICHEP2016
Takashi Hachiya, “Recent heavy flavor measurements from PHENIX at RHIC”, ISMD2016
Takashi Hachiya, “Recent results on heavy flavor production at RHIC-PHENIX”, INPC2016
Gaku Mitsuka, ”Disentangling transverse single spin asymmetry for very forward neutrons in polarized pA collisions using ultra-peripheral
collisions ”, 25th International Workshop of Deep Inelastic Scattering (DIS2017)[Domestic Conference]
Gaku Mitsuka, “RHIC ༢ࢫࣆࣥ㠀ᑐ⛠ᐃ࡟ᑐࡍࡿ ultra-peripheral collision ࡢᙳ㡪” , ᪥ᮏ≀⌮Ꮫ఍ ➨ 72 ᅇᖺḟ኱఍

Posters Presentations[International Conference etc.]
Gaku Mitsuka ”sPHENIX Intermediate silicon tracker INTT” Quark Matter 2017

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESSub Nuclear System Research Division
RIKEN Facility Office at RAL
1. Abstract
Our core activities are based on the RIKEN-RAL Muon Facility located at the Rutherford Appleton Laboratory (UK), which provides
intense pulsed-muon beams. Muons have their own spins with 100% polarization, and can detect local magnetic fields and theirfluctuations at muon stopping sites very precisely. The method to study characteristics of materials by observing time dependent changes ofmuon spin polarization is called “Muon Spin Rotation, Relaxation and Resonance (ȝSR method), and is applied to study electro-magnetic
properties of insulating, metallic, magnetic and superconducting systems. Muons reveal static and dynamic properties of the electronic stateof materials in the zero-field condition, which is the ideal magnetic condition for research on magnetism. We have carried out ȝSR
investigations on frustrated pyrochlore systems, which have a variety of exotic ground states of magnetic spins, so the magnetism study ofthis system using muons is quite unique.
The ultra-slow muon beam can be stopped in thin foil, multi-layered materials and artificial lattices, which enables us to apply the ȝSRtechniques to surface and interface science. The development of an ultra-slow muon beam is also very important as a source of ultra-cold(pencil-like small emittance) muon beam for muon g-2/EDM measurement. We have been developing muonium generators to create moremuonium atoms in vacuum even at room temperature to improve beam quality compared with the conventional hot-tungsten muonium
generator. We demonstrated a tremendous increase of the muonium emission efficiency by fabricating fine laser drill-holes on the surface ofsilica aerogel. We also developed a high power Lyman-alpha laser in collaboration with the Advanced Photonics group at RIKEN. The newlaser will ionize muonium atoms 100 times more efficiently for slow muon beam generation.

2. Major Research Subjects(1) Materials science by muon-spin-relaxation method(2) Hyperfine interactions at muon sites studied by the computation science(3) Nuclear and particle physics studies via muonic atoms and ultra-cold muon beam

3. Summary of Research Activity(1) Material Science at the RIKEN-RAL Muon Facility
Muons have their own spins with 100% polarization, and can detect local magnetic fields and their fluctuations at muon stoppingsites very precisely. The PSR method is applied to studies of newly fabricated materials. Muons enable us to conduct (1) material studies
under external zero-field condition, (2) magnetism studies with samples without nuclear spins, and (3) measurements of muon spin
relaxation changes over a wide temperature range with same detection sensitivity. The detection time range of local field fluctuations by
PSR is 10-6 to 10-11 second, which is an intermediate region between neutron scattering methods (10-10-10-12 second) and Nuclear Magnetic
Resonance (NMR) (longer than 10-6 second). At Port-2 and 4 of the RIKEN-RAL Muon Facility, we have been performing PSR research on
strong correlated-electron systems, organic molecules and biological samples to study electron structures, superconductivity, magnetism,molecular structures and crystal structures.
In the period from 2015 to 2017, we have obtained excellent results, and the highlights are listed in the following,1) The superconducting gap state of O-[BETS]2GaCl4 has both the s- and d-wave characters.
2) A static ordering in the Ca-doped pyrochlore iridate; (Nd1-xCax)2Ir2O7 is strongly suppressed by the carrier doping.
3) A long-range magnetic ordering is observed in alkali-metal superoxides of CsO2 and RbO2 but not in NaO2.
4) Missing of a static ordering is confirmed in both Au144 and Au25 nano-clusters.
5) The quantum spatial distribution of the muon by the zero-point vibration energy is clarified by density functional theory
calculations by using the RIKEN supercomputing system. HOKUSAI.
Result-1) One dimensional organic superconductor, O-[BETS]2GaCl4, has a unique Fermi-surface structure with the four-fold nodal
points. The estimation of the superconducting gap from computational analysis of PSR experimental data indicates a unique view of thesupeconducting gap to be a mixed state of the major s-wave component and the minor d-wave one. Result-2) Static orderings of both Nd
and Ir magnetic spins are strongly suppressed by the carrier doping. A quantum critical change to the non-magnetic ground state is expectedaround x=0.10 being accompanied by changes in the transport properties. Result-3) The S electrons which are widely distributed on the O2
dumbbell in superoxides CsO2 and RbO2 are found to form static long-range orderings. The magnetic moment is quantitatively estimated inconjunction with density functional theory calculations and confirmed to shrink to less than a half in the magnetically ordered state.
Result-4) Ground states of nano-cluster of Au with 144 and 25 atoms are concluded to be still nonmagnetic down to 0.3 K from both themagnetic susceptibility and PSR measurements although those systems have been argued to show some static magnetic states. Result-5)
The muon trapped in materials is confirmed to be spatially distributed around the local minimum potential position by the zero-point
vibration energy, which is due to the muon’s physics character as a light particle. This quantum spatial distribution is now taken into
account for the PSR data analysis with the similar quantum spatial distribution of magnetic moments.
We are developing international collaborations on the muon science with Asian groups in order to organize new PSR experimental
research themes and to develop muon-site calculation activities using computational method. We renewed MOU’s with Indonesian and
Malaysian universities to enhance collaborative researches on the muon science at the RIKEN-RAL Muon Facility. We formed a new MOU
with Universitus Indonesia (UI) as a new partner to work on the muon science and student education. We are developing new collaborations
in PSR experiments on strongly correlated systems with researchers from China, Taiwan and Korea including graduate students.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)(2) Ultra Slow (low energy) Muon Beam Generation and Applications
A positive muon beam with thermal energy has been produced by laser ionization of muonium atoms (bound system of P+ andelectron) emitted from hot tungsten surface with stopping surface muon beam at Port-3. The method generates a positive muon beam withacceleration energy from several 100 eV to several 10 keV, small beam size (a few mm) and good time resolution (less than 8 nsec). By
stopping the ultra-slow muon beam in thin foil, multi-layered materials and artificial lattices, we can precisely measure local magnetic fieldin the materials, and apply the PSR techniques to surface and interface science. Since there has been no appropriate probe to study
magnetism at surface and interface, the ultra-slow muon beam will open a new area of these research fields. In addition, the development of
ultra-slow muon beam is very important as the source of ultra-cold (pencil-like small emittance) muon beam for muon g-2/EDM
measurement. It is essential to increase the slow muon beam production efficiency by 100 times for these applications. There are three key
techniques in ultra-slow muon generation: production of thermal muonium, high intensity Lyman-alpha laser and the ultra-slow muon beamline.
In the period from 2011 to 2016, we developed a high power Lyman-alpha laser in collaboration with the Advanced Photonics group at
RIKEN. The new laser will ionize muoniums 100 times more efficiently for slow muon beam generation. This development was funded
mostly by the Grant-in-Aid for Scientific Research on Innovative Areas “Frontier in Materials, Life and Particle Science Explored by Ultra
Slow Muon Microscope”. This Grant-in-Aid research group is a complex of research institutions from universities together with J-PARC
muon group and RIKEN. The new laser system was installed to J-PARC slow muon beam line and is being used for the generation ofultra-slow muons. In this development, we succeeded in synthesizing a novel ceramic-based Nd:YGAG crystal. We already achieved 10
times increase in Lyman-alpha intensity and are waiting the growth of a large crystal to achieve the goal of 100 times increase. This crystal
can also be applicable to the flash-lamp based Lyman-alpha laser system of RIKEN-RAL to realize substantial improvement of the laser
power at a much reduced cost based on our experience so far.
We also aimed to realize drastic improvements on the ultra-slow muon source with much reduced emittance. We have been developing
muonium generators to create more muoniums in vacuum even at room temperature. In 2013, we demonstrated at least 10 times increase of
the muonium emission efficiency in one of the silica aerogel samples with fine holes fabricated on the surface. The measurement was
carried out at TRIUMF in collaboration with J-PARC muon g-2/EDM group. In 2016 we studied the method of stable production of various
laser drill-holes with Canadian collaborators so we can increase the muonium emission by systematic study of muonium emission undervarious target conditions.
We are planning to feed these new techniques to RIKEN-RAL ultra-slow muon beam line to realize further improvement of ultra-slow
muon technology. The muonium production target section, which had been designed with hot tungsten, was completely redesigned andrebuilt to use advantages of the new room temperature silica aerogel target, such as no need of thermal shielding and spin control byapplying weak magnetic field, etc. Also, we adopted an all-cylindrical beam-transport design, because of its simpler optics and better
manufacture precision, which will contribute to the ultimate cold muon source required for muon g-2/EDM. In test experiments with themuon beam in 2016, we demonstrated a new powerful method of the muon stopping optimization in silica aerogel using muonium spinrotation.
(3) New Proposal for Fundamental Physics
We proposed the measurement of the proton radius by using the hyperfine splitting of the 1S states of muonic hydrogen. Recent
measurement of the proton radius using muonic hydrogen at PSI revealed that the proton radius is surprisingly smaller than the radius so far
measured using normal hydrogen spectroscopy and e-p scattering by more than 5 times their experimental precision. In contrast to theconventional measurement by means of electron, measurement with muonic hydrogen has larger sensitivity to the proton radius because thenegative muon orbits closer to the proton, although there is no reason why these measurements can yield inconsistent results. The cause of
the discrepancy is not understood yet, thus a new measurement with independent method is much anticipated.
There are two independent experimental proposals to RIKEN-RAL PAC to measure the hyperfine splitting energy of the 1S energy
levels by laser excitation from singlet ground state to triplet state. This energy splitting is sensitive to the Zemach radius, which is a
convolution of charge and magnetic distributions inside proton. Both commonly search resonant excitation from singlet 1S (F=0) to triplet
1S (F=1) using high intensity 6.7 ȝm excitation laser, but different schemes are proposed to detect the resonance. One is to detect muontransfer to the surrounding impurity atom by x-ray (European group), and the other is to detect the muon decay asymmetry recovery along
the circularly polarized excitation laser, which selectively excites one of the F=1 states and regenerates the muon spin polarization (RIKEN
group). RIKEN-RAL PAC accepted both proposals for feasibility studies.
RIKEN laser group made basic design of the laser system, based on their recent success on mid-infared (6 ȝm) high-power pulse laser
system. There is no direct way to produce 6.7 ȝm lasers, so we started to test the wavelength conversion efficiency of the laser key
components. Other important progress is the background measurement. Since we need to stop muons in extremely low-density hydrogentarget to substantially reduce the polarization quenching effect due to the atomic collision, all the muons stopped in the material other than
the target can be a background source. Thus, we plan to use high Z materials for the target cell construction, so as all the muons stopping insurrounding materials quickly die out before the laser is introduced. We carried out the measurement of long-life background level, andconfirmed that the background level can be made low enough by using coincidence detection method. The RIKEN-RAL Port 1
experimental area was refurbished for the proton radius experiments in 2016 and the muon beam was reestablished in March 2017.
(4) Other topics
New demand is emerging utilizing the muon beam for electronic chip radiation effect studies. Recent progress of semiconductor
devices has produced electronic chips with very fine structure. It is anticipated that the single memory upset by the ionization effect of asingle muon may result in malfunction or errors of advanced electronics. The muon is the main component of cosmic rays in our ordinary
life and difficult to be removed. Measurements are being performed at RIKEN-RAL to measure such an error rate. Already several groups- 345 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

carried out measurements on several different electronics. Although the sensitivity differs from chip to chip, in most cases, the error rateincreases when the muon beam momentum is chosen so that the muon nearly stops in the chip itself (Bragg peak effect).
There were also demands for the use of negative muons for the non-destructive elements analysis using muonic x-rays. Especially its
good depth sensitivity was clearly demonstrated. The applied objects so far are archaeological coins, sword, and oxygen concentration
measurement in levers, movement of Li concentration in batteries, etc. The first paper on this work has recently been published (‘Probing
beneath the surface without a scratch — bulk non-destructive elemental analysis using negative muons’, AD Hillier et al., Microchemical
Journal 125 (2016) 203) which describes the technique’s development and potential capabilities. A project has been initiated with STFC’s
Technology Department to develop detectors for this application and already demonstrated use of pixel detector for imaging.

Members
Director
Philip KING
Research & Technical Scientist
Isao WATANABE (concurrent: Advanced Meson Science Lab.)
Administration Manager
Mitsuru KISHIMOTO (concurrent: Nishina Center Planning
Office)Kazunori MABUCHI (concurrent: Nishina Center Planning
Office)List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
A. Adamczak et al., “Steps towards the hyperfine splitting measurement of the muonic hydrogen ground state: pulsed muon beam anddetection system characterization”, Journal of Instrumentation, 11, P05007 (2016); doi:10.1088/1748-0221/11/05/P05007 *K.M. Suzuki, T. Adachi, H. Sato, I. Watanabe, and Y. Koike, "Successive Magnetic Transitions Relating to Itinerant Spins and Localized Cu
Spins in La2-xSrxCu1-yFeyO4: Possible Existence of Stripe Correlations in the Overdoped Regime" J. Phys. Soc. Jpn. 85, 124705-1-7(2016).*
Xing-Liang Xu, Xu-Guang Zheng, and I. Watanabe, "Utilizing Muon-Spin-Relaxation to Probe Ferroelectric Transition in Hydroxyl Salt
Co2(OD)3Cl" Ferroelectrics 505, 1255131-1-6 (2016). *T. Adachi, A. Takahashi, K.M. Suzuki, M.A. Baqiya, T. Konno, T. Takamatsu, M. Kato, I. Watanabe, A. Koda, M. Miyazaki, R. Kadono, and Y.
Koike, "Strong Electron Correlation Behind the Superconductivity in Ce-Free and Ce-Underdoped High-Tc T’-Cuprates" J. Phys. Soc. Jpn.
85, 124705-1-7 (2016). *M. Enomoto, I. Watanabe, and N. Kojima, "Dynamical Behavior of the Charge Transfer Phase Transition in Dithiooxalato-Bridged Iron
Mixed-Valence System", Current Inorganic Chemistry 6, 49-60 (2016). *Sunaryono, Ahmad Taufiq, Edy Giri Rahman Putra, A. Okazawa, I. Watanabe, N. Kojima, Supagorn Rugmai, Siriwat Soontaranon,
Mohammad Zainuri, Triwikantoro, Suminar Pratapa, and Darminto, "Small-Angle X-Ray Scattering Study on PVA/Fe3O4 Magnetic
Hdrogels" NANO 11, 1650027-1-12 (2016). *I. Kawasaki, K. Fujimura, I. Watanabe, M. Avdeev, K. Tenya, and M. Yokoyama, "Muon Spin Relaxation and Neutron Diffraction Studies ofCluster-Glass State in Sr1-xLaxRuO3" J. Phys. Soc. Jpn. 85, 054701-1-8 (2016). *T. Uehara, M. Ito, J. Angel, J. Shimada, N. Komakine, T. Tsuchiya, H. Taniguchi, K. Satoh, K. Triyana, Y. Ishii, and I. Watanabe, “Studies on
Magnetism of the Layered Organic Antiferromagnet Bordered on a Superconducting Phase by Muon Spin Rotation and Magnetization
Measurements”, J. Phys. Soc. Jpn. 85, 024710-1-6 (2016). *[Proceedings](Original Papers) *Subject to Peer Review
M. Bagatin, S. Gerardin, A. Paccagnella, A. Visconti, S. Beltrami, M. Bertuccio, K. Ishida, C. D. Frost, A. Hillier, V. Ferlet-Cavrois
Reliability Physics Symposium (IRPS), 2016 IEEE International , 10.1109/IRPS.2016.7574552 *Oral Presentations[International Conference etc.]
K. Ishida, " Muon g-2/EDM at J-PARC " , Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, USA, June 2016
K. Ishida, "Muon catalyzed d-t fusion ", The 6th Yamada Conference on Muonic X and Gamma ray Spectroscopy, Osaka, Sep 2016
[Domestic Conference]໭ᮧ㑈௚͇-3$5&࣑࣮ࣗ࢜ࣥJ('0 ⢭ᐦ ᐃᐇ㦂࡟࠾ࡅࡿ࣑࣮ࣗ࢜ࣥຍ㏿ᐇ⌧࡟ྥࡅࡓప㏿࣑࣮ࣗ࢜ࣥ⏕ᡂᐇ㦂ࡢ⤖ᯝሗ࿌࡜ᒎᮃ͇ࠊ
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Posters Presentations[International Conference etc.]
Alexandre Bosser, Viyas Gupta, Arto Javanainen, Georgios Tsiligiannis, Helmut Puchner, Frédéric Saigne, Frédéric Wrobel, Ari Virtanen ,Luigi Dilillo; “Comparison of the Effects of Muon and Low-Energy Proton Irradiation on a 65 nm Low-Power SRAM”, . RADECS: Radiation
and Its Effects on Components and Systems, Sep 2016, Bremen, Germany.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Radioactive Isotope Physics Laboratory
1. Abstract
This Laboratory works as one of core research groups conducting programs at the world-premiere heavy-ion accelerator facility of
RIKEN “RI Beam Factory (RIBF)”. The Laboratory explores exotic nuclear structures and dynamics in exotic nuclei that have never been
investigated before, such as those with largely imbalanced proton and neutron numbers. Our aim is to develop new experimental techniques
utilizing fast radioactive isotope (RI) beams at RIBF, to discover new phenomena and properties in exotic nuclei. The Laboratory is
focusing three major subjects; shell evolution of very neutron-rich nuclei, the r-process path and equation-of-state in asymmetric nuclear
matter. The Laboratory has initiated international collaborations for in-beam gamma spectroscopy, decay spectroscopy and heavy-ion
induced reactions, and has formed a discussion forum for next generation gamma detectors.

2. Major Research Subjects(1) Study of structure and dynamics of exotic nuclei through developments of new tools in terms of reaction- and technique-based
methodology(2) Research on EOS in asymmetric nuclear matter via heavy-ion induced reactions(3) Detector developments for spectroscopy and reaction studies

3. Summary of Research Activity(1) In-beam gamma spectroscopy
In the medium and heavy mass region explored at RIBF, collective natures of nuclei are one of important subjects, which are obtained
through production and observation of high excited and high spin states. To populate such states, heavy-ion induced reactions such as
fragmentation, fission are useful. So far, we have developed two-step fragmentation method as an efficient method to identify and populate
excited states, and lifetime measurements to deduce transition strength.
Devices utilized for the in-beam gamma spectroscopy are ZeroDegree Spectrometer (ZDS) and a NaI array DALI2. Since the end of
2008, the first spectroscopy on nuclei island-of-inversion region was performed, we have explored step-by-step new and unknown regionsin the nuclear chart. The second campaign in 2009 was organized to study background components originating from atomic processes in aheavy target. Neutron-rich nuclei at N=20 to 28 were studied in 2010. In 2011-2013, we conducted experiment programs for Ca-54, Ni-78,
neutron-rich nuclei at N=82 and neutron-deficient nuclei at Z=50.
A multitude of data obtained with inelastic, nucleon knock-out, fragmentation channels have been analyzed and published. In
2011-2013, collective natures of Mg-36, 38 and Si-42 were both published in PRL. Excited states firstly observed in Ca-54 were reported in
Nature to demonstrate a new nuclear magic number of 34. Fragmentation reaction has been found efficient for nuclei with A>100 and
low-lying excited state in Pd-126 has been successfully observed and reported in PRC.
To further strengthen the in-beam gamma spectroscopy at RIBF, we have proposed a new setup of MINOS + DALI2 to search for the
1st excited states in even-even neutron-rich nuclei with Z~20 to 40. The program was submitted to the PAC 2013 as a new category“proposal for scientific program” and was S-ranked. A dedicated collaboration “SEASTAR” has been established as a subset of in-beamgamma collaboration “SUNFLOWER”. The two campaigns were organized in 2014 and 2015 to study very neutron-rich isotopes.
Concerning a next generation detector, a discussion forum has been established to write up a white paper on tracking germanium
detectors and high-efficient crystal detectors such LaBr3 and GAGG.
(2) Decay spectroscopy
Beta- and isomer-spectroscopy is an efficient method for studying nuclear structure, especially for non-yrast levels. We had
accumulated experimental techniques at the RIPS facility to investigate nuclear structure in light mass region via beta-gamma and beta-pcoincidence. Concerning the medium and heavy mass region available at RIBF, we have developed two position-sensitive active-stoppers,
strip-silicon detectors and a cylindrical active stopper called CAITEN, to achieve a low-background measurement by taking correlation
between heavy ion stop position and beta-ray emission position. A site of decay-spectroscopy at the new facility of RIBF is the final focal
plane of ZDS, where high precision of TOF in particle identification is obtained due to a long flight path from BigRIPS to ZDS.
At the end of 2009, the first decay spectroscopy was organized with a minimum setup of four clover gamma detectors and silicon strip
detectors, to study neutron-rich nuclei with A~110. The first campaign was found successful and efficient to publish four letter articles in
2011, two PRL’s and two PLB’s. One of the PRL papers is associated to the r-process path where half-lives for 18 neutron-rich nuclei were
determined for the first time. The other PRL paper reported a finding of deformed magic number 64 in the Zr isotopes.
The success of the first decay-spectroscopy campaign stimulated to form a new large-scale collaboration “EURICA”, where a twelve
Euroball cluster array is coupled with the silicon-strip detectors to enhance gamma efficiency by a factor of 10. A construction proposal of“EURICA” was approved in the PAC 2011, and the commissioning was successfully organized in spring 2012. Since then, physics runs
have been conducted for programs approved to survey nuclei of interest as many as possible, such as Ni-78, Pd-128, Sn-100. So far, 34
papers including 11 PRL’s and 8 PLB’s were published. One of the highlights is discovery of a seniority isomer in Pd-128, of which
cascade gamma decay gives the energy of 1st excited state and robustness of N=82 magic number, and the other is a half-life measurementfor 110 neutron-rich nuclei across the N=82 shell gap, which shows implications for the mechanism and universality of the r-process path.
The EURICA collaboration finished its physics programs in summer 2016.
Beta-delayed neutron emission probability of medium and heavy neutron-rich nuclei is important to understand nuclear structure andthe r-process path. In 2013, a new collaboration “BRIKEN” has been established to form a He-3 detector array. A present design of thearray has neutron efficiency as high as 70% up to 3 MeV. The array will be coupled with the AIDA silicon strip system. A construction- 347 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

proposal was approved at the PAC 2013 and three physics proposals have been approved. The commissioning run was conducted in autumn
2016.
The CAITEN detector was successfully tested with fragments produced with a Ca-48 beam in 2010.
(3) Equation-of-state via heavy-ion central collisions
Equation-of-state in asymmetric nuclear matter is one of major subjects in physics of exotic nuclei. Pi-plus and pi-minus yields incentral heavy ion collisions at the RIBF energy are considered as one of EOS sensitive observables at the RIBF energy. To observe charged
pions, a TPC for the SAMURAI spectrometer is being constructed under an international collaboration “SSRIT”. Construction proposal
was submitted at the PAC 2012, and physics proposals were approved at the PAC 2012 and 2013. The physics runs were successfully
conducted in spring 2016.
An international symposium “NuSYM” on nuclear symmetry energy was organized at RIKEN July 2010 to invite researchers in threesub-fields, nuclear structure, nuclear reaction and nuclear astrophysics, and to discuss nuclear symmetry energy together. Since then, thesymposium series have been held every year and been useful to encourage theoretical works and to strengthen the collaboration.
(4) Nucleon correlation and cluster in nuclei
Nucleon correlation and cluster in nuclei are matters of central focus in a “beyond mean-field” picture. The relevant programs within-beam gamma and missing-mass techniques are to depict nucleon condensations and correlations in nuclear media as a function of density
as well as temperature. Neutron-halo and –skin nuclei are objects to study dilute neutron matter at the surface. By changing excitationenergies in neutron-rich nuclei, clustering phenomena and role of neutrons are to be investigated.
In 2013, two programs were conducted at the SAMURAI spectrometer. One is related to proton-neutron correlation in the C-12
nucleus via p-n knockout reaction with a carbon target. The other is to search for a cluster state in C-16, which was populated via inelasticalpha scattering. The data is being analyzed.

Members
Chief Scientist (Lab. Head)
Hiroyoshi SAKURAI (Deputy Director, RNC)
Vice Chief Scientist
Takashi ICHIHARA
Research & Technical Scientists
Yoichi NAKAI (Senior Research Scientist)
Akihisa KOHAMA (Senior Research Scientist)
Takashi KISHIDA (Senior Research Scientist)
Shunji NISHIMURA (Senior Research Scientist)

Tadaaki ISOBE (Senior Research Scientist)
Pieter Christiaan DOORNENBAL (Research Scientist)
Daisuke SUZUKI (Research Scientist)

Contract Researchers
David STEPPENBECKMizuki NISHIMURA

Foreign Postdoctoral Researchers
Paer-Anders SOEDERSTROEMHe WANG

Research Consultants
Masayasu ISHIHARA
Akitsu IKEDA

Hiroyuki MURAKAMI
Kenichi MATSUYANAGI

Junior Research Associate
Yoshiaki SHIGA (Rikkyo Univ.)
Noritsugu NAKATSUKA (Kyoto Univ.)

Keishi MATSUI (Univ. of Tokyo)
Masanori KANEKO (Kyoto Univ.)

International Program Associates
Ian MURRAY (Univ. Paris Sud)
Sidong CHEN (Peking Univ.)
Xiaohui SUN (Peking Univ.)

Phong VI (Hanoi University of Science,)
Longchun TAO (Peking University)

Visiting Researchers
Gabor KISS (JSPS Fellow)
Martha Liliana CORTES SUA (JSPS Fellow)

David STEPPENBECK (JSPS Fellow)
Frank BROWNE (JSPS Fellow)

Senior Visiting Scientists
Kengo OGAWA (Chiba Univ.)
Koichiro ASAHI (TIT)

Shigeru KUBONO (Univ. of Tokyo)

Visiting Scientists
Hooi Jing ONG (RCNP)

Megumi NIIKURA (Univ. of Tokyo)- 348 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Silivio CHERUBINI (Univ. of Catania)
Hyo Soon JUNG (Univ. of Notre Dame)
Daiki NISHIMURA (Tokyo Univ. of Sci.)
Takashi KISHIDA (Aoyama Univ.)
Naohiko OTSUKA (Intl. Atomic Energy Agency, Austria)
Giuseppe LORUSSO (National Physics Lab., UK)
Hiu Ching LEE (Univ. of Hong Kong)
Zhengyu XU (Univ. of Hong Kong)
Indranil MAZUMDAR (GSI)
Byungsik HONG (Korea Univ.)
Prabhakar PALNI (MSU)
Rebecca SHANE (MSU)
Alan MCINTOSH (Texas A & M Univ.)
Michael YOUNG (Texas A & M Univ.)
Thomas DAVINSON (Univ. of Edinburgh)
Yassid AYYAD (Osaka Univ.)
Kathrin WIMMER (Univ. of Tokyo)
Tetsuya MURAKAMI (Kyoto Univ.)

Kazuo IEKI (Rikkyo Univ.)
Mitsunori FUKUDA (Osaka Univ.)
Nori AOI (RCNP)
Khiem Hong LE (Vietnam Academy of Sci. and Tech.)
Evgueni NIKOLSKI (RRC Kurchatov Inst.)
Alexey OGLOBLIN (RRC Kurchatov Inst.)
Hiroshi WATANABE (Beihang Univ.)
Akira ONO (Tohoku Univ.)
Kazuhiro OYAMATSU (Aichi Shukutoku University)
Clementine SANTAMARIA (Michigan State University)
Kei IIDA (Kochi University)
Natsumi IKENO (Tottori Univ.)
Yont Jin KIM (Institute for Basic Science)
Pawlowski PIOTR (Institute of Nuclear Physics PAN)
Giordano CERIZZA (NSCL)
Marisa GULINO (Universita di Enna Kore Italy)
Satoshi TAKEUCHI (TIT)
Hyo Sang㻌 LEE (Institute for Basic Science)

Visiting Technicians
Ivan KOJOUHAROV (GSI)
Student Trainees
Hiroki NISHIBATA (Osaka Univ.)
Tetsuya YAMAMOTO (Osaka Univ.)
Ayumi YAGI (Osaka Univ.)
Ryo TANIUCHI (Univ. of Tokyo)
Jin-hee CHANG (Korea University)
Akira HOMMA (Niigata Univ.)
Satoru MOMIYAMA (Univ. of Tokyo)
Shintaro YAMAOKA (Osaka Univ.)
Kouta WATANABE (Osaka Univ.)
Justin ESTEE (Michigan State University)
MasanoriKANEKO (Kyoto Univ.)
Suwat TANGWANCHAROEN (Michigan State University)
JungWoo LEE (Korea University)
Takashi ANDO (Univ. of Tokyo)
Shunpei KOYAMA (Univ. of Tokyo)
Hang DU (Osaka Univ.)
Yuutaro TANAKA (Osaka Univ.)
Jonathan BARNEY (Michigan State University)
Hiroyuki OIKAWA (Tokyo Univ. of Science)
Toshiki YOSHINOBU (Tokyo Univ. of Science)
Yuki KANKE (Tokyo Univ. of Science)
Junya NAGUMO (Tokyo Univ. of Science)
Jiajian LIU (The University of Hong Kong)
Shinnosuke KANAYA (Osaka Univ.)
Hiroshi KANAOKA (Osaka Univ.)
Yan ZHANG (Tsinghua University)
Shunsuke NAGAMINE (Univ. of Tokyo)
TakeshiSAITO (Univ. of Tokyo)
Eri MIYATA (Niigata Univ.)
Yuta KUNIMOTO (Rikkyo Univ.)
Yohei TANAKA (Rikkyo Univ.)
Sean SWEANY (Michigan State University)
Shoichi YAGI (Osaka Univ.)
Yuki TAKEI (Tokyo Univ. of Science)
Pawel LASKO (Jagiellonian University)

Krzyszto PELCZAR (Jagiellonian University)
Ryo HIGUCHI (Univ. of Tokyo)
Riku TAMURA (Univ. of Tokyo)
Masashi USAMI (Univ. of Tokyo)
KousukeONISHI (Osaka Univ.)
Takanobu SUGIHARA (Osaka Univ.)
Juan MANFREDI (Michigan State University)
FredrikPARNEFJORD GUSTAFSSON (HKU)
Chun Yuen TSANG (CUHK)
Kosuke MAEDA (Rikkyo Univ.)
Ryunosuke BANNAY (Rikkyo Univ.)
Sakiko ASHIKAGA (Kyoto Univ.)
Kento INABA (Kyoto Univ.)
Shota MATSUMOTO (Kyoto Univ.)
Ken WATANABE (Kyoto Univ.)
Yu TAKAHASHI (Kyoto Univ.)
Ami KOSHIKAWA (Kyoto Univ.)
Andrea JEDEL (Texas A & M University)
Taku KUMON (Univ. of Tokyo)
Takuma KOIWAI (Univ. of Tokyo)
Yuma SHIMIZU (Univ. of Tokyo)
SoomiCHA (Sungkyunkwan University)
Taichi HORI (Osaka Univ.)
Shoken NAKAMURA (Osaka Univ.)
Rikuto YANAGIHARA (Osaka Univ.)
Naoto KANDA (Niigata Univ.)
Suharu HOSHINO (Niigata Univ.)
Ryohei HOSODA (Niigata Univ.)
Masaki SHIOTA (Niigata Univ.)
Taro WADA (Niigata Univ.)
Toshiki MOCHIZUKI (Univ. of Tokyo)
Tomoaki KASUGA (Univ. of Tokyo)
Ryohei ITO (Univ. of Tokyo)
Herrera Wilmar RODRIGUEZ (Univ.Nacional de Colombia)
Yusuke FUJINO (Rikkyo Univ.)

Interns
Dolachai BONIFACE (Univrsite Paris SUD)
Part-time Workers

   Yukiya SAITO (Univ.of Tokyo)- 349 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
G. Jhang, J. Barney, J. Estee, T. Isobe, M. Kaneko, M. Kurata-Nishimura, G. Cerizza, C. Santamaria, J.W. Lee, P. Lasko, J. Lukasik, W.G.
Lynch, A.B. McIntosh, T. Murakami, P. Pawlowski, R. Shane, S. Tangwancharoen, M.B. Tsang, H. Baba, B. Hong, Y.J. Kim, H.S. Lee, H.
Otsu, K. Pelczar, H. Sakurai, D. Suzuki, Z. Xiao, S.J. Yennello, Y. Zhang et. al., "Beam Commissioning of the SpiRIT Time Projection
Chamber", Journal of the Korean Physical Society, Vol. 69, No. 2, 144 (2016) *J. W. Hwang, S. Kim, Y. Satou, N. A. Orr, Y. Kondo, T. Nakamura, J. Gibelin, N. L. Achouri, T. Aumann, H. Baba, F. Delaunay, P. Doornenbal,
N. Fukuda, N. Inabe, T. Isobe, D. Kameda, D. Kanno, N. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond, J. Lee, F. M. Marques, R. Minakata,
T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S. Ogoshi, H. Otsu, H. Sato, Y. Shimizu,
H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, Y. Togano, A. G. Tuff, M. Vandebrouck, and K. Yoneda. 'Single-neutron
knockout from 20C and the structure of 19C.' Phys.Lett. B, 769:503, 2017.
H. N. Liu, J. Lee, P. Doornenbal, H. Scheit, S. Takeuchi, N. Aoi, K. A. Li, M. Matsushita, D. Steppenbeck, H. Wang, H. Baba, E. Ideguchi, N.
Kobayashi, Y. Kondo, G. Lee, S. Michimasa, T. Motobayashi, A. Poves, H. Sakurai, M. Takechi, Y. Togano, J. A. Tostevin, and Y. Utsuno.
'Intruder configurations in the ground state of 30Ne.' Phys.Lett. B, 767:58, 2017.
N. Paul, A. Corsi, A. Obertelli, P. Doornenbal, G. Authelet, H. Baba, B. Bally, M. Bender, D. Calvet, F. Chateau, S. Chen, J. -P. Delaroche, A.
Delbart, J. -M. Gheller, A. Giganon, A. Gillibert, M. Girod, P. -H. Heenen, V. Lapoux, J. Libert, T. Motobayashi, M. Niikura, T. Otsuka, T. R.
Rodriguez, J. -Y. Rousse, H. Sakurai, C. Santamaria, N. Shimizu, D. Steppenbeck, R. Taniuchi, T. Togashi, Y. Tsunoda, T. Uesaka, T. Ando,
T. Arici, A. Blazhev, F. Browne, A. M. Bruce, R. Carroll, L. X. Chung, M. L. Cortes, M. Dewald, B. Ding, F. Flavigny, S. Franchoo, M. Gorska,
A. Gottardo, A. Jungclaus, J. Lee, M. Lettmann, B. D. Linh, J. Liu, Z. Liu, C. Lizarazo, S. Momiyama, K. Moschner, S. Nagamine, N.
Nakatsuka, C. Nita, C. R. Nobs, L. Olivier, Z. Patel, Z. Podolyak, M. Rudigier, T. Saito, C. Shand, P. -A. Soderstrom, I. Stefan, R. Orlandi, V.
Vaquero, V. Werner, K. Wimmer, and Z. Xu. 'Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of
110Zr.' Phys.Rev.Lett., 118:032501, 2017.
H. Wang, N. Aoi, S. Takeuchi, M. Matsushita, T. Motobayashi, D. Steppenbeck, K. Yoneda, H. Baba, Zs. Dombradi, K. Kobayashi, Y. Kondo, J.
Lee, H. Liu, R. Minakata, D. Nishimura, H. Otsu, H. Sakurai, D. Sohler, Y. Sun, Z. Tian, R. Tanaka, Zs. Vajta, Z. Yang, T. Yamamoto, Y. Ye,and R. Yokoyama. 'First spectroscopic information from even-even nuclei in the region "southeast" of 132Sn: Neutron-excitation
dominance of the 2+ 1 state in 132Cd.' Phys.Rev. C, 94:051301, 2016.
D.Q. Fang, Y.G. Ma, X.Y. Sun, P. Zhou, Y. Togano, N. Aoi, H. Baba, X.Z. Cai, X.G. Cao, J.G. Chen, Y. Fu, W. Guo, Y. Hara, T. Honda, Z.G. Hu,
K. Ieki, Y. Ishibashi, Y. Ito, N. Iwasa, S. Kanno, T. Kawabata, H. Kimura, Y. Kondo, K. Kurita, M. Kurokawa, T. Moriguchi, H. Murakami, H.
Ooishi, K. Okada, S. Ota, A. Ozawa, H. Sakurai, S. Shimoura, R. Shioda, E. Takeshita, S. Takeuchi, W.D. Tian, H.W. Wang, J.S. Wang, M.
Wang, K. Yamada, Y. Yamada, Y. Yasuda, K. Yoneda, G.Q. Zhang, T. Motobayashi: ‘Proton-proton correlations in distinguishing thetwo-proton emission mechanism of 23Al and 22Mg’, Phys. Rev. C 94 (2016) 044621
Y. Togano, T. Nakamura, Y. Kondo, J. A. Tostevin, A. T. Saito, J. Gibelin, N. A. Orr, N. L. Achouri, T. Aumann, H. Baba, F. Delaunay, P.
Doornenbal, N. Fukuda, J. W. Hwang, N. Inabe, T. Isobe, D. Kameda, D. Kanno, S. Kim, N. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond,J. Lee, F. M. Marques, R. Minakata, T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S.
Ogoshi, H. Otsu, H. Sato, Y. Satou, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, A. G. Tuff, M. Vandebrouck,
and K. Yoneda. 'Interaction cross section study of the two-neutron halo nucleus 22C.' Phys.Lett. B, 761:412, 2016.
P. Doornenbal, H. Scheit, S. Takeuchi, N. Aoi, K. Li, M. Matsushita, D. Steppenbeck, H. Wang, H. Baba, E. Ideguchi, N. Kobayashi, Y. Kondo,
J. Lee, S. Michimasa, T. Motobayashi, A. Poves, H. Sakurai, M. Takechi, Y. Togano, and K. Yoneda. 'Mapping the deformation in the "islandof inversion": Inelastic scattering of 30Ne and 36Mg at intermediate energies.' Phys.Rev. C, 93:044306, 2016.
H. Wang, H. Otsu, H. Sakurai, D.S. Ahn, M. Aikawa, T. Ando, S. Araki, S. Chen, N. Chiga, P. Doornenbal, N. Fukuda, T. Isobe, S. Kawakami,
S. Kawase, T. Kin, Y. Kondo, S. Koyama, S. Kubono, Y. Maeda, A. Makinaga, M. Matsushita, T. Matsuzaki, S. Michimasa, S. Momiyama, S.
Nagamine, T. Nakamura, K. Nakano, M. Niikura, T. Ozaki, A. Saito, T. Saito, Y. Shiga, M. Shikata, Y. Shimizu, S. Shimoura, T. Sumikama,
P.-A. Söderström, H. Suzuki, H. Takeda, S. Takeuchi, R. Taniuchi, Y. Togano, J. Tsubota, M. Uesaka, Ya. Watanabe, Yu. Watanabe, K.
Wimmer, T. Yamamoto, and K. Yoshida. ‘Spallation reaction study for the long-lived fission product 107Pd’, Progress in Theory andExperiment Physics 2017(2), 021D01 (2017).
S. Hayakawa, S. Kubono, D. Kahl, H. Yamaguchi, D. N. Binh, T. Hashimoto, Y. Wakabayashi, J. J. He, N. Iwasa, S. Kato, T. Komatsubara, Y.
K. Kwon, and T. Teranishi. “First direct measurement of the 11C(ĮS 1VWHOODUUHDFWLRQE\DQH[WHQGHGWKLFN-target method”, : Phys. Rev.
C 93 (2016) 065802 (8)W.P. Liu, Z.H. Li, J.J. He, X.D. Tang, G. Lian, Z. An, J.J. Chang, H. Chen, Q.H. Chen, X.J. Chen, Z.J. Chen, B.Q. Cui, X.C. Du, C.B. Fu, L.
Gan, B. Guo, G.Z. He, A. Heger, S.Q. Hou, H.X. Huang, N. Huang, B.L. Jia, L.Y. Jiang, S. Kubono, J.M. Li, K.A. Li, T. Li, Y.J. Li, M. Lugaro,
X.B. Luo, H.Y. Ma, S.B. Ma, D.M. Mei, Y.Z. Qian, J.C. Qin, J. Ren, Y.P. Shen, J. Su, L.T. Sun, W.P. Tan, I. Tanihata, S. Wang, P. Wang, Y.B.
Wang, Q. Wu, S.W. Xu, S.Q. Yan, L.T. Yang, Y. Yang, X.Q. Yu, Q. Yue, S. Zeng, H.Y. Zhang, H. Zhang, L.Y. Zhang, N.T. Zhang, Q.W.
Zhang, T. Zhang, X.P. Zhang, X.Z. Zhang, Z.M. Zhang, W. Zhao, Z. Zhao, and C. Zhou (JUNA Collaboration). “Progress of Jinping
Underground laboratory for Nuclear Astrophysics (JUNA)”, SCIENCE CHINA - Physics, Mechanics & Astronomy 59 (2016) 642001.
X. Xu, P. Zhang, P. Shuai, R.J. Chen, X.L. Yan, Y.H. Zhang, M. Wang, Yu.A. Litvinov, H.S. Xu, T. Bao, X.C. Chen, H. Chen, C.Y. Fu, S.
Kubono, Y.H. Lam, D.W. Liu, R.S. Mao, X.W. Ma, M.Z. Sun, X.L. Tu, Y.M. Xing, J.C. Yang, Y.J. Yuan, Q. Zeng, X. Zhou, X.H. Zhou, W.L.
Zhan, S. Litvinov, K. Blaum, G. Audi, T. Uesaka, Y. Yamaguchi, T. Yamaguchi, A. Ozawa, B.H. Sun, Y. Sun, A. C. Dai, and F.R. Xu.
³,GHQWLILFDWLRQRIWKH/RZHVW7 -ʌ ,VREDULF$QDORJ6WDWHLQ&RDQG,WV,PSDFWRQWKH8QGHUVWDQGLQJRIȕ-Decay Properties of 52Ni”,
Phys. Rev. Lett. 117 (2016) 182503.
P. Zhang, X. Xu, P. Shuai, R.J. Chen, X.L. Yan, Y.H. Zhang, M. Wang, Yu.A. Litvinovc, K. Blaum, H.S. Xu, T. Bao, X.C. Chen, H. Chena, C.Y.
Fua, J.J. He, S. Kubono, Y.H. Lam, D.W. Liua, R.S. Mao, X.W. Ma, M.Z. Suna, X.L. Tu, Y.M. Xing, J.C. Yang, Y.J. Yuan, Q. Zenga, X.
Zhoua, X.H. Zhou, W.L. Zhan, S. Litvinov, G. AXGL 7 8HVDND < <DPDJXFKL 7 <DPDJXFKL $ 2]DZD %+ 6XQ < 6XQ )5 ;Xಯ+LJKSUHFLVLRQ4(&YDOXHVRIVXSHUDOORZHGൺ˟HPLWWHUV&U)HDQG1Lರ3K\V/HWW%   
T. Kawabata, T. Kawabata, Y. Fujikawa, T. Furuno, T. Goto, T. Hashimoto, M. Ichikawa, M. Itoh, N. Iwasa, Y. Kanada-En’yo, A. Koshikawa, S.
Kubono, E. Miyawaki, M. Mizuno, K. Mizutani, T. Morimoto, M. Murata, T. Nanamura, S. Nishimura, S. Okamoto, Y. Sakaguchi, I. Sakata, A.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Sakaue, R. Sawada, Y. Shikata, Y. Takahashi, D. Takechi, T. Takeda, C. Takimoto, M. Tsumura, K. Watanabe, and S. Yoshida.
“Time-Reversal Measurement of the p-Wave Cross Sections of the 7%H QĮ 4He Reaction for the Cosmological Li Problem”, Phys. Rev.
Lett. 118 (2017) 052701.
P. Russotto, S. Gannon, S. Kupny, P. Lasko, L. Acosta, M. Adamczyk, A. Al-Ajlan, M. Al-Garawi, S. Al-Homaidhi, F. Amorini, L. Auditore, T.
Aumann, Y. Ayyad, Z. Basrak, J. Benlliure, M. Boisjoli, K. Boretzky, J. Brzychczyk, A. Budzanowski, C. Caesar, G. Cardella, P. Cammarata,
Z. Chajecki, M. Chartier, A. Chbihi, M. Colonna, M.D. Cozma, B. Czech, E.De Filippo, M.Di Toro, M. Famiano, I. Gasparic, L. Grassi, C.
Guazzoni, P. Guazzoni, M. Heil, L. Heilborn, R. Introzzi, T. Isobe, K. Kezzar, M. Kis, A. Krasznahorkay, N. Kurz, E. La Guidara, G.
Lanzalone, A. Le Fevre, Y. Leifels, R.C. Lemmon, Q.F. Li, I. Lombardo, J. Lukasik, W.G. Lynch, P. Marini, Z. Matthews, L. May, T. Minniti, M.
Mostazo, A. Pagano, E. V. Pagano, M. Papa, P. Pawlowski, S. Pirrone, G. Politi, F. Porto, W. Reviol, F. Riccio, F. Rizzo, E. Rosato, D. Rossi,
S. Santoro, D.G. Sarantites, H. Simon, I. Skwirczynska, Z. Sosin, L. Stuhl, W. Trautmann, A. Trifiro, M. Trimarchi, M.B. Tsang, G. Verde, M.
Veselsky, M. Vigilante, Y. Wang, A. Wieloch, P. Wigg, J. Winkelbauer, H.H. Wolter, P. Wu, S. Yennello, P. Zambon, L. Zetta, M. Zoric,"Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density", Physical Review C 94 (2016) 034608.
M.B. Tsang, J. Estee, H. Setiawan, W.G. Lynch, J. Barney, M.B. Chen, G. Cerizza, P. Danielewicz, J. Hong, P. Morfouace, R. Shane, S.
Tangwancharoen, K. Zhu, T. Isobe, M. Kurata-Nishimura, J. Lukasik, T. Murakami, Z. Chajeck, "Pion Production in Rare Isotope Collisions",
Physical Review C 95 (2016) 044614.
S. Tangwancharoen, W.G. Lynch, J. Barney, J. Estee, R. Shane, M.B. Tsang, Y. Zhang, T. Isobe, M. Kurata-Nishimura, T. Murakami, Z.G. Xiao,
Y.F. Zhang, the SpiRIT collaboration, "A gating grid driver for time projection chambers", Nuclear Instruments and Methods A 853 (2017)44.
P. Lasko, M. Adamczyk, J. Brzychczyk, P. Hirnyk, J. Lukasik, P. Pawlowski, K. Pelczar, A. Snoch, A. Sochocka, Z. Sosin, J. Barney, G.
Cerizza, J. Estee, T. Isobe, G. Jhang, M. Kaneko, M. Kurata-Nishimura, W.G. Lynch, T. Murakami, C. Santamaria, M.B. Tsang, Y. Zhang,"KATANA – A charge-sensitive triggering system for the SpiRIT experiment", Nuclear Instruments and Methods A 856 (2017) 92.
A. Tarifeno-Saldivia, J.L. Tain, Domingo-Pardo, F. Calvino, G. Cortes, V.H. Phong, A. Riego, J. Agramunt, A. Algora, N. Brewer, R.
Caballero-Folch, P.J. Coleman-Smith, T. Davinson, I. Dillmann, A. Estrade, C.J. Griffin, R. Grzywacz, L.J. Harkness-Brennan, G.G. Kiss, M.
Kogimtzis, M. Labiche, I.H. Lazarus, G. Lorusso, K. Matsui, K. Miernik, F. Montes, A.I. Morales, S. Nishimura, R.D. Page, Z.S. Podolyak,
V.F.E. Pucknell, B.C. Rasco, P. Regan, B. Rubio, K.P. Rykaczewski,d Y. Saito,c;g H. Sakurai,c J. Simpson,k E. Sokol,t R. Surman,A.
Svirkhin, S.L. Thomas, A. Tolosa and P. Woods "Conceptual design of a hybrid neutron-gamma detector for study of beta-delayed neutrons
at the RIB facility of RIKEN" Journal of Instrumentation 12 (2016) P04006.
T. Goigoux, P. Ascher, B. Blank, M. Gerbaux, J. Giovinazzo, S. Grevy, T. Kurtukian Nieto, C. Magron, P. Doornenbal, G. G. Kiss, S. Nishimura,
P.-A. Söderström, V. H. Phong, J. Wu, D. S. Ahn, N. Fukuda, N. Inabe, T. Kubo, S. Kubono, H. Sakurai, Y. Shimizu, T. Sumikama, H. Suzuki,
H. Takeda, J. Agramunt, A. Algora, V. Guadilla, A. Montaner-Piza, A. I. Morales, S. E. A. Orrigo, B. Rubio, Y. Fujita, M. Tanaka, W. Gelletly,
P. Aguilera, F. Molina, F. Diel, D. Lubos, G. de Angelis, D. Napoli, C. Borcea, A. Boso, R. B. Cakirli, E. Ganioglu, J. Chiba, D. Nishimura, H.
Oikawa, Y. Takei, S. Yagi, K. Wimmer, G. de France, S. Go, and B. A. Brown "Two-proton radioactivity of 67Kr" PHYSICAL REVIEWLETTERS 117 (2016) 162501.
B. Blank, T. Goigoux, P. Ascher, M. Gerbaux, J. Giovinazzo, S. Grevy, T. Kurtukian Nieto, C. Magron, J. Agramunt, A. Algora, V. Guadilla, A.
Montaner-Piza, A. I. Morales, S. E. A. Orrigo, B. Rubio, D. S. Ahn, P. Doornenbal, N. Fukuda, N. Inabe, G. Kiss, T. Kubo, S. Kubono, S.
Nishimura, V. H. Phong, H. Sakurai, Y. Shimizu, P.-A. Soderstrom, T. Sumikama, H. Suzuki, H. Takeda, J. Wu, Y. Fujita, M. Tanaka, W.
Gelletly, P. Aguilera, F. Molina, F. Diel, D. Lubos, G. de Angelis, D. Napoli, C. Borcea, A. Boso, R. B. Cakirli, E. Ganioglu, J. Chiba, D.
Nishimura, H. Oikawa, Y. Takei, S. Yagi, K. Wimmer, G. de France, and S. Go "New neutron-deficient isotopes from 78Kr fragmentation"
PHYSICAL REVIEW C 93 (2016) 061301(R)Y. Nakai, H. Hidaka, N. Watanabe, T. M. Kojima: “Stepwise formation of H3O+(H2O)n in an ion drift tube: empirical effective temperature of
association/dissociation reaction equilibrium in an electric field”, Journal Chemical Physics 144, (2016) 224306.
P.J. Davies, H. Grawe , K. Moschner, A. Blazhev, R. Wadsworth , P. Boutachkov, F. Ameil, A. Yagi, H. Baba, T. Bäck, M. Dewald, P.
Doornenbal, T. Faestermann, A. Gengelbach, J. Gerl, R. Gernhäeuser, S. Go, M. Górska, E. Gregor, T. Isobe, D.G. Jenkins, H. Hotaka, J.
Jolie, I. Kojouharov, N. Kurz, M. Lewitowicz, G. Lorusso, L. Maier, E. Merchan, F. Naqvi, H. Nishibata, D. Nishimura,͒ S. Nishimura, F.
Nowacki, N. Pietralla, H. Schaffner, P.-A. Söderström, H.S. Jung,͒K. Steiger, T. Sumikama, J. Taprogge, P. Thöle, N. Warr, H. Watanabe, V.
Werner, Z.Y. Xu, K. Yoshinaga, Y. Zhu: “The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd” , Phys.
Lett. B 767 (2017) 474-479.
J. Wu, S. Nishimura, G. Lorusso, P. Möller, E. Ideguchi, P.-H. Regan, G. S. Simpson, P.-A. Söderström, P. M. Walker, H. Watanabe, Z. Y. Xu,
H. Baba, F. Browne, R. Daido, P. Doornenbal, Y. F. Fang,͒G. Gey, T. Isobe, P. S. Lee, J. J. Liu, Z. Li, Z. Korkulu, Z. Patel, V. Phong, S. Rice,H. Sakurai, L. Sinclair, T. Sumikama, M. Tanaka, A. Yagi, Y. L. Ye, R. Yokoyama, G. X. Zhang, T. Alharbi, N. Aoi, F. L. Bello Garrote, G.
Benzoni, A. M. Bruce, R. J. Carroll, K. Y. Chae, Z. Dombradi, A. Estrade,͒A. Gottardo, C. J. Griffin, H. Kanaoka, I. Kojouharov, F. G. Kondev,
S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, G. J. Lane, E. J. Lee, T. Lokotko, G. Lotay, C.-B. Moon, H. Nishibata, I. Nishizuka, C. R. Nita, A.
Odahara, Zs. Podolyák, O. J. Roberts, H. Schaffner, C. Shand, J. Taprogge, S. Terashima, Z. Vajta, and S. Yoshida͒ ³ ȕ-Decay
Half-Lives of Neutron-Rich 55Cs to 67Ho: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation” , Phys.
Rev. Lett. 118, 072701 (2017) 1-7.
A.I. Morales, G. Benzoni, H. Watanabe, Y. Tsunoda, T. Otsuka, S. Nishimura, F. Browne, R. Daido, P. Doornenbal, Y. Fang, G. Lorusso, Z.
Patel, S. Rice,͒L. Sinclair, P.-A. Söderström, T. Sumikama, J. Wu, Z.Y. Xu , A. Yagi, R. Yokoyama, H. Baba, R. Avigo, F.L. Bello Garrote, N.
Blasi, A. Bracco, F. Camera, S. Ceruti, F.C.L. Crespi, G. de Angelis, M.-C. Delattre, Zs. Dombradi, A. Gottardo, T. Isobe , I. Kojouharov , N.
Kurz, I. Kuti, K. Matsui, B. Melon , D. Mengoni ,͒T. Miyazaki , V. Modamio-Hoybjor, S. Momiyama, D.R. Napoli, M. Niikura,͒R. Orlandi, H.
Sakurai, E. Sahin, D. Sohler, H. Schaffner, R. Taniuchi, J. Taprogge , Zs. Vajta, J.J. Valiente-Dobón, O. Wieland , M. Yalcinkaya : Type II
shell evolution in A = 70 isobars from the N ุLVODQGRILQYHUVLRQ3K\V/HWW%  
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Y. Xu, N. Aoi, H. Baba, F. L. Bello Garrote, G. Benzoni, F. Browne, R. Daido, Y. Fang, N. Fukuda, A. Gottardo, G. Gey, S. Go, N. Inabe,T.
Isobe, D. Kameda, K. Kobayashi, M. Kobayashi, I. Kojouharov, T. Komatsubara, T. Kubo, N. Kurz, I. Kuti, Z. Li, M. Matsushita, S.
Michimasa, C.-B. Moon, H. Nishibata, I. Nishizuka, A. Odahara, Z. Patel, S. Rice, E. Sahin, H. Sakurai, H. Schaffner, L. Sinclair, H. Suzuki,
H. Takeda, J. Taprogge, Zs. Vajta, H. Watanabe, and A. Yagi͒: ´ȝVLVRPHUVRI1G´3K\V5HY&  -5.
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ࡇ , T. Sumikama,
Z.Y. Xu, H. Baba, F. Browne, N. Fukuda, R. Gernha user, G. Gey, N. Inabe, T. Isobe, H.S. Jung, D. Kameda, G.D. Kim, Y.-K. Kim, I.

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Ⅵ. RNC ACTIVITIES

Kojouharov,͒T. Kubo, N. Kurz, Y.K. Kwon, Z. Li, H. Sakurai, H. Schaffner, Y. Shimizu, K. Steiger, H. Suzuki, H. Takeda, Zs. Vajta, H.
Watanabe, J. Wu, A. Yagi, K. Yoshinaga, G. Benzoni, S. Bo ࡇnig,͒K.Y. Chae, L. Coraggio, J.-M. Daugas, F. Drouet, A. Gadea, A. Gargano, S.
Ilieva, N. Itaco,͒F.G. Kondev, T. Kro ࡇll, G.J. Lane, A. Montaner-Piza ғ, K. Moschner31, D. Mu cࡇ her, F. Naqvi, M. Niikura, H. Nishibata, A.
Odahara, R. Orlandi, Z. Patel, Zs. Podolya ғk, and A. Wendt : Proton-hole and core-excited states in the semi-magic nucleus 131In82 , Eur.
Phys. J. A 52, 347 (2016) 1-10.
P.-A. Söderström, P.M. Walker, J. Wu, H.L. Liu, P.H. Regan, H. Watanabe,͒P. Doornenbal, Z. Korkulu, P. Lee, J.J. Liu, G. Lorusso, S.
Nishimura,͒V.H. Phong, T. Sumikama, F.R. Xu, A. Yagi, G.X. Zhang, D.S. Ahn, T. Alharbi,͒H. Baba, F. Browne, A.M. Bruce, R.J. Carroll ,K.Y. Chae, Zs. Dombradi, A. Estrade , N. Fukuda, C.J. Griffin, E. Ideguchi, N. Inabe, T. Isobe, H. Kanaoka, S. Kanaya, I. Kojouharov, F.G.
Kondev, T. Kubo, S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, G.J. Lane, E.J. Lee , C.S. Lee, G. Lotay, C.-%0RRQ,1LVKL]XND&51LWࡤDࡅA. Odahar, Z. Patel, Zs. Podolyák, O.J. Roberts, H. Sakurai, H. Schaffner, C.M. Shand, H. Suzuki, H. Takeda, S. Terashima, Zs. Vajta, J.J.
Valiente-Dòbon, Z.Y. Xu : “K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy”, Phys. Lett. B 762 (2016)404-408.
J. Lee, H. Liu, P. Doornenbal, M. Kimura, K. Minomo, K. Ogata, Y. Utsuno, N. Aoi, M. Matsushita, H. Scheit, D. Steppenbeck, S. Takeuchi, H.
Wang, H. Baba, E. Ideguchi, N. Kobayashi, Y. Kondo, S. Michimasa, T. Motobayashi, H. Sakurai, M. Takechi, Y. Togano:”Asymmetry
dependence of reduction factors from single-nucleon knockout of 30Ne at similar to 230 MeV/nucleon”, Prog. Theo. and Exp Physics 8(2016) 083D01.
A. Jungclaus, H. Grawe, S. Nishimura, P. Doornenbal, G. Lorusso, G. S. Simpson, P.-$6RࡇGHUVWURࡇP T. Sumikama, J. Taprogge, Z. Y. Xu, H.
Baba, F. Browne, N. Fukuda, 5*HUQKDࡇXVHU G. Gey, N. Inabe, T. Isobe,͒H. S. Jung, D. Kameda, G. D. Kim, Y.-K. Kim, I. Kojouharov, T.
Kubo, N. Kurz, Y. K. Kwon, Z. Li,͒H. Sakurai, H. Schaffner, Y. Shimizu, K. Steiger, H. Suzuki, H. Takeda, Zs. Vajta, H. Watanabe, J. Wu,͒A.
Yagi, K. Yoshinaga, G. Benzoni, 6%RࡇQLJ K. Y. Chae, L. Coraggio, J.-M. Daugas, F. Drouet, A. Gadea, A. Gargano, S. Ilieva, N. Itaco, F. G.
Kondev, 7.URࡇOO G. J. Lane, A. Montaner-3L]Dғ K. Moschner,͒'0XࡇFKHU F. Naqvi, M. Niikura, H. Nishibata, A. Odahara, R. Orlandi, Z.
Patel, =V3RGRO\DғN DQG$:HQGW³ȕGHFD\RIVHPL-magic 130Cd: Revision and extension of the level scheme of 130In“, Phys. Rev. C 94,
024303 (2016) 1-8.
H. Watanabe, G.X. Zhang, K. Yoshida, P.M. Walker, J.J. Liu, J. Wu,͒P.H. Regan, P.-A. Söderström, H. Kanaoka, Z. Korkulu, P.S. Lee, S.
Nishimura,͒A. Yagi, D.S. Ahn, T. Alharbi, H. Baba, F. Browne, A.M. Bruce, R.J. Carroll,͒K.Y. Chae, Zs. Dombradi, P. Doornenbal, A.
Estrade, N. Fukuda, C. Griffin,͒E. Ideguchi, N. Inabe, T. Isobe, S. Kanaya, I. Kojouharov, F.G. Kondev, T. Kubo,͒S. Kubono, N. Kurz, I. Kuti,
S. Lalkovski, G.J. Lane, C.S. Lee , E.J. Lee, G. Lorusso, G. Lotay, C.-B. Moon , I. Nishizuka, C.R. Nita, A. Odahara , Z. Patel , V.H. Phong ,Zs. Podolyák , O.J. Roberts , H. Sakurai , H. Schaffner , C.M. Shand , Y. Shimizu ,͒T. Sumikama , H. Suzuki , H. Takeda , S. Terashima , Zs.
Vajta , J.J. Valiente-Dóbon , Z.Y. Xu : “Long-lived K LVRPHUDQGHQKDQFHGȖYLEUDWLRQLQWKHQHXWURQ-rich nucleus 172Dy: Collectivity beyond
double midshell”, Phys. Lett. B 760 (2016) 641-646.
H. Otsu, S. Koyama, N. Chiga, T. Isobe, T. Kobayashi, Y. Rondo, M. Kurokawa, W.G. Lynch, T. Motobayashi, T. Murakami, T. Nakamura, M.
Kurata-Nishimura, V. Panin, H. Sato, Y. Shimizu, H. Sakurai, M.B. Tsang, K. Yoneda, H. Wang :”SAMURAI in its operation phase for RIBF
users”, Nucl. Instrum and Methods B 376 (2016) 175-179,&ࡊHOLNRYLFғ M. Lewitowicz, R. Gernhäuser, R. Krücken, S. Nishimura, H. Sakurai, D.S. Ahn, H. Baba, B. Blank, A. Blazhev, P. Boutachkov, F.
Browne, G. de France, P. Doornenbal, T. Faestermann, Y. Fang, N. Fukuda, J. Giovinazzo, N. Goel, M. Górska, S. Ilieva, N. Inabe, T. Isobe,
A. Jungclaus, D. Kameda, Y.-K. Kim, Y. K. Kwon, I. Kojouharov, T. Kubo, N. Kurz, G. Lorusso, D. Lubos, K. Moschner, D. Murai, I. Nishizuka,
J. Park, Z. Patel, M. Rajabali, S. Rice, H. Schaffner, Y. Shimizu, L. Sinclair, P.-A. Söderström, K. Steiger, T. Sumikama, H. Suzuki, H.
Takeda, Z. Wang, H. Watanabe, J. Wu, and Z. Xu : “New Isotopes and Proton Emitters–Crossing the Drip Line in the Vicinity of 100Sn”,
Phys. Rev. Lett. 116, 162501 (2016) 1-6.
Y. L. Sun, J. Lee, Y. L. Ye, A. Obertelli, Z. H. Li, N. Aoi, H. J. Ong, Y. Ayyad, C. A. Bertulani, J. Chen, A. Corsi, F. Cappuzzello, M. Cavallaro, T.
Furono, Y. C. Ge, T. Hashimoto, E. Ideguchi, T. Kawabata, J. L. Lou, Q. T. Li, G. Lorusso, F. Lu, H. N. Liu, S. Nishimura, H. Suzuki, J.
Tanaka, M. Tanaka, D. T. Tran, M. B. Tsang, J. Wu, Z. Y. Xu, and T. Yamamoto͒: “Experimental study of the knockout reaction mechanism
using 14O at 60 MeV/nucleon”, Phys. Rev. C 93, 044607 (2016) 1-8.
A. Jungclaus, A. Gargano, H. Grawe, J. Taprogge, S. Nishimura, P. Doornenbal, G. Lorusso, Y. Shimizu, G. S. Simpson, P.-$6RࡇGHUVWURࡇP T.
Sumikama, Z. Y. Xu, H. Baba, F. Browne, N. Fukuda, 5*HUQKDࡇXVHU**H\ N. Inabe, T. Isobe, H. S. Jung, D. Kameda, G. D. Kim, Y.-K.
Kim, I. Kojouharov, T. Kubo, N. Kurz, Y. K. Kwon, Z. Li, H. Sakurai, H. Schaffner, K. Steiger, H. Suzuki, H. Takeda, Zs. Vajta, H. Watanabe,
J. Wu, A. Yagi, K. Yoshinaga, 6%RࡇQLJ L. Coraggio, J.-M. Daugas, F. Drouet, A. Gadea, S. Ilieva, N. Itaco, 7.URࡇOO A. Montaner-3L]Dғ K.
Moschner, ' 0XࡇFKHU H. Nishibata, A. Odahara, R. Orlandi, and A. Wendt : “FirVW REVHUYDWLRQ RI Ȗ UD\V HPLWWHG IURP H[FLWHG VWDWHV
south-HDVWRI6Q7KHʌg෥ٔȞf7/2 multiplet of 132In83“, Phys. Rev. C 93, 041301(R) (2016) 1-6[Proceedings](Original Papers) *Subject to Peer Review
T. Isobe, et al., “Constraint on Nuclear Symmetry Energy through Heavy RI Collision Experiment by Using SpiRIT Device at RIBF-SAMURAI”,
JPS Conf. Proc. 14, 010802 (2017) *H. Wang, “In-beam gamma-ray spectroscopy and cross section measurement strategy for long-lived fission products at RIBF”, Proceedingsof the 2014 Symposium on Nuclear Data, 69 (2016).
D. Suzuki et al., “Cluster structure of neutron-rich 10Be and 14C via resonant alpha scattering”, Il Nuovo Cimento C 39, 372 (2016).
P.-A. Söderström, P. M. Walker, J. Wu, H. L. Liu, P. H. Rega, H. Watanabe, P. Doornenbal, Z. Korkulu, P. Lee, J. J. Liu, G. Lorusso, S.
Nishimura,͒V. H. Phong, T. Sumikama, F. R. Xu, A. Yagi, G. X. Zhang, D. S. Ahn,͒T. Alharbi, H. Baba, F. Browne, A. M. Bruce, R. J. Carroll,K. Y. Chae, Zs. Dombradi, A. Estrade, N. Fukuda, C. Griffin, E. Ideguchi, N. Inabe, T. Isobe, H. Kanaoka, S. Kanaya, I. Kojouharov, F. G.
Kondev, T. Kubo,͒S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, G. J. Lane, E. J. Lee, C. S. Lee, G. Lotay, C.-%0RRQ,1LVKL]XND&51LWࡤDࡅ
A. Odaharal, Z. Patel, Zs. Podolyák, O. J. Roberts, H. Sakurai, H. Schaffner, C. M. Shand, H. Suzuki, H. Takeda, S. Terashima, Zs. Vajta, J.
J. Valiente-Dòbon and Z. Y. Xu : “Collective And Single-particle Structures In The Neutron-rich Doubly Mid-shell Nucleus 170Dy“, In
Proceedings of International Nuclear Physics Conference, PoS (INPC2016), page 072. Sissa, (2017).
9+3KRQJ61LVKLPXUD*/RUXVVRDQG$$OJRUD,PSDFWRIWKHȕ-Delayed Neutron Emission Probabilities Around A= 100–125 on ther-Process and the BRIKEN Project" In Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 020620(2017).

- 352 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)[Others]
The Proceedings of the 14th International Symposium on Nuclei in the Cosmos NIC2016 (Niigata, 19-24 June, 2016), JPS Conference
Proceedings No. 14 (2017) edited by S. Kubono, T. Kajino, S. Nishimura, T. Isobe, S. Nagataki, T. Shima, and Y. TakedaḈ஭༤൤, “2 㔜࡟㨱ἲᩘࢆࡶࡗࡓࢽࢵࢣࣝ-78“ࠊࣃࣜࢸ࢕ 2016 ᖺ 12 ᭶ྕḈ஭༤൤, “ⓒᖺࡢィ“ࠊIsotope News [≉ูྕ No.1]  2017 ᖺ 1 ᭶ྕ
ᮏᯘ㏱ࠊḈ஭༤൤, “㨱ἲᩘࡢᖐ㊅ࢆࡵࡄࡗ࡚“ࠊཎᏊ᰾◊✲➨ 61 ᕳ 2 ྕ 1, 2017
Oral Presentations[International Conference etc.]
T. Isobe, “Constraint on Nuclear Symmetry Energy through Heavy RI Collision Experiment by Using SpiRIT Device at RIBF-SAMURAI”, 14th
International Symposium on Nuclei in the Cosmos XIV, 19-24 Jun 2016, Toki-Messe, Niigata, Japan
H. Wang, “Nuclear structure study for the neutron-rich nuclei beyond 132Sn”, The international conference on Direct Reactions with Exotic
Beams (DREB2016), July 11-15, 2016, Halifax, Canada
H. Wang, “Spallation reaction study for fission products in nuclear waste: Cross section measurements for 137Cs, 90Sr and 107Pd on proton anddeuteron at different reaction energy”, International conference on nuclear data and technology (ND2016), September 11-16, 2016, Brugge,
Belgium
H. Wang, “Measurement of Spallation Cross Sections for 137Cs, 90Sr and 107Pd on Proton and Deuteron Using the Inverse Kinematic Method”,
Asian Nuclear Prospects 2016 (ANUP2016), October 24-27, 2016, Sendai, Japan
H. Wang, “Spallation Reaction Study for the Long-Lived Fission Products in Nuclear Waste: Cross Section Measurement for 137Cs, 90Sr and107
Pd Using the Inverse Kinematic Method”, The Fifth International Symposium on Innovative Nuclear Energy Systems (INES-5), October
31-November 2, 2016, Tokyo Institute of Technology, Tokyo, Japan
D. Suzuki, “Second 0+ state of unbound 12O via the (p,t) reaction”, The international conference on Direct Reactions with Exotic Beams(DREB2016), July 11-15, 2016, Halifax, Canada
D. Suzuki, “Tetra-proton cluster and mirror symmetry”, Third LISE/ICC workshop, December 12-14, 2016 GANIL, Caen, France
D. Suzuki, “Gaseous detectors for radioactive beam experiment”, GDS Topical Meeting: GDS coupling to auxiliary detection systems,
January 25-27, 2017 INFN Laboratori Nazionali di Legnaro, Italy
S. Kubono, “Challenge to Explore the Mechanism of Evolution of the Universe and the Origin of Elements”: The 20th International
Conference on Accelerators and Beam Utilizations, Nov. 2 - 4, 2016, Gyeongju, Korea, Nov, 2016
S. Kubono, “Problems in BigBang nucleosynthesis; Heavy element synthesis and Li problem”, The 40th ASRC International Workshop on
Experimental and Theoretical Advances in Fission and Heavy Nuclei, JAEA, Tokai, 12 – 13th December, 2016
T. Isobe, “DAQ and computing infrastructure for high multiplicity tracking with SpiRIT", Workshop on Software for Time Projection Chambers
for Nuclear Physics Experiments, 8-10 Aug 2016, FRIB-MSU, East Lansing, Michigan, USA
T. Isobe, “Experimental study of density dependent nuclear symmetry energy by using heavy RI collision at RIBF-SpiRIT", KPS annual
meeting, 19-21 Oct 2016, Kim-Daejon Convension Center, Guanjin, Korea
T. Isobe, “Experimental Study of Neutron Rich Matter EOS at RIKEN-RIBF", APPC-AIP 2016 is the Asia Pacific Physics Conference and22nd Australian Institute of Physics Congress, 4-8 Dec 2016, Brisbane Convention and Exhibition Centre, Brisbane, Australia
T. Isobe, “Application of transport model to design experiment",Transport 2017: International Workshop on Transport Simulations for Heavy
Ion Collisions under Controlled Conditions, 27-31 Mar 2017, FRIB-MSU, East Lansing, Michigan, USA
Y. Nakai, H. Hidaka, N. Watanabe, T.M. Kojima, “Equilibrium of association/dissociation reactions of a water molecule to/ from H3O+(H2O)ncluster ions in an ion drift tube”, 12th Asian International Seminar on Atomic and Molecular Physics, 6-10 September 2016, Changchun,
China
G. G. Kiss, “Beta-delayed neutron emission probability measurements at RIKEN” Hungarian Wayfarer Meeting on Physics 2016, Aug. 24-27;
Szeged, Hungary
G. G. Kiss, “Introduction to the Briken project” 3rd EURICA collaboration workshop 2016, Sept. 7-8; Wako, Japan
G. G. Kiss, “Beta delayed neutrons and the astrophysical r process” 3. Annual meeting of the Hungarian Nuclear Physics Community (2016,
Dec. 7-9; Paks, Hungary
S. Nishimura, “Experimental beta-decay rates of r-process nuclei”, Neutron star mergers: From gravitational waves to nucleosynthesis, (2017,
January 15-21; Hirshegg, Austria
S. Nishimura, “b-decay properties of neutron-rich nulei: impact on r-process abundance”, The 14th International Symposium on Nuclei in the
Cosmos (NIC-XIV), 2016, June 19-24; Niigata, Japan
H. Sakurai, "Nuclear magic numbers", The 71st Fujihara Seminar-Shimoda 2016, Shimoda, July 2016
H. Sakurai, "RIB Experiments", ICTP-IAEA workshop on Nuclear Structure and Decay Data: Experiment, Theory and Evaluation, Trieste, Aug.
2016
H. Sakurai, "Decay studies of exotic nuclei at RIKEN", The 2016 Zakopane Conference on Nuclear Physics "Extremes of the Nuclear
Landscape", Zakopane, Aug. 2016
H. Sakurai, "Post RIBF project", RIBF Users Meeting 2016, Wako, Sept. 2016
H. Sakurai, "Long-lived Fission Product Transmutation", 21st International Conference on Cyclotrons and their applications, Zurich, Sept.
2016
H. Sakurai, "Recent highlights and future projects at RIBF", Shapes and Symmetries in Nuclei: from Experiment to Theory, Orsay, Nov., 2016
H. Sakurai, "Recent Activities and Plans at RIBF", IBS-RIKEN Conference on Recent Developments in RI Physics, Daejeon, Nov. 2016
H. Sakurai, "The status and future of RIBF", ANPhA2916 Symposium, Sendai, Nov. 2016
H. Sakurai, "New Magicity and Magicity Loss in Atomic Nuclei", Joint 13th Asia Pacific Physics Conference and 22nd Australian Institute ofPhysics Congress, Brisbane, Dec. 2016
[Domestic Conference]☾㒊ᛅ᫛, “㧗ᐦᗘཎᏊ᰾≀㈨ࡢᑐ⛠࢚ࢿࣝࢠ࣮”, ࠕ⇕ሙࡢ㔞Ꮚㄽ࡜ࡑࡢᛂ⏝◊✲఍ࠖ, 23-Aug-16, RIKEN
H. Wang, “Reaction study for fission products in nuclear waste: Cross section measurements for the spallation of 137Cs, 90Sr and 107Pd on
proton and deuteron”, JPS meeting 2016 autumn, September 21-24, 2016, Miyazaki University- 353 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

D. Suzuki, “Missing mass spectroscopy with radioactive isotope beam”, CNS Summer School 2016 (CNSSS2016), August 24 through 30,
Riken Wako campus
D. Suzuki, “Overview of the RIBF facility”, CNS Summer School 2016 (CNSSS2016), August 24 through 30, Riken Wako campus☾㒊ᛅ᫛, "୰ᛶᏊ㐣๫᰾≀㉁ࡢ≧ែ᪉⛬ᘧゎ᫂࡟ྥࡅࡓ㔜 RI ⾪✺ᐇ㦂⏝ࢱ࢖࣒ࣉࣟࢪ࢙ࢡࢩࣙࣥࢳ࢙ࣥࣂ࣮ࡢ㛤Ⓨ", ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍ࠊ21-24-Sep-16ࠊᐑᓮ኱Ꮫ☾㒊ᛅ᫛, "ୡ⏺᭱ඛ➃ࡢ◊✲࡜ᮍ᮶", ♫఍ேㅮ₇఍ࠊ⣽⏣Ꮫᅬ㧗ᰯࠊᇸ⋢┴ᚿᮌᕷࠊ2016 ᖺ 11 ᭶☾㒊ᛅ᫛, “୰ᛶᏊ≀㉁ࢆࡉࡄࡿ᫬㛫ᑕᙳᆺ㸱ḟඖ㣕㊧᳨ฟჾࡢ㛤Ⓨ”, ࠕඛ➃≀⌮ィ 㛤Ⓨᐊ ࢟ࢵࢡ࢜ࣇ࣮࣡ࢡࢩࣙࢵࣉࠖ, 22-Dec-16, ᮾிᕤᴗ኱Ꮫ☾㒊ᛅ᫛, "⛉Ꮫ⪅࡟࡞ࡿ࡜࠸࠺஦", SSH ࢟ࣕࣜ࢔ㅮ₇఍ࠊ᪂₲┴❧㛗ᒸ㧗ᰯࠊ᪂₲┴㛗ᒸᕷࠊ2017 ᖺ 2 ᭶☾㒊ᛅ᫛, “SpiRIT ᳨ฟჾࡢㄞࡳฟࡋᅇ㊰⣔”, ࠕ᪂Ꮫ⾡㡿ᇦ୰ᛶᏊᫍ᰾≀㉁ ➨஧ᅇ᳨ฟჾ࣮࣡ࢡࢩࣙࢵࣉࠖ, 4-Mar-17, ᮾிᕤᴗ኱Ꮫ
Y. Nakai, N. Watanabe, Y. Oba, “Hydrogenation of a thin foil C60 under low temperature condition”, 72th Annual meeting of the physicalsociety of Japan, March 2017, Osaka University㔠Ꮚ㞞⣖, "㔜࢖࢜ࣥ⾪✺ࢆ⏝࠸ࡓ㧗ᐦᗘ㠀ᑐ⛠᰾≀㉁࡟࠾ࡅࡿᑐ⛠࢚ࢿࣝࢠ࣮◊✲ࡢゎᯒ≧ἣ", ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍,
21-24-Sep-16, ᐑᓮ኱ᏛḈ஭༤൤,”⌮◊ RIBF ࡟࠾ࡅࡿ᰾≀⌮◊✲”ࠊᮾᾏ࣭㔜࢖࢜ࣥ⛉Ꮫࢩ࣏ࣥࢪ࣒࣮࢘ࢱࣥࢹ࣒ຍ㏿ჾᡂᯝሗ࿌఍㸫ࠊᮾᾏࠊ2017 ᖺ 1 ᭶Ḉ஭༤൤, “ぶᏊ୍⥴࡟"ඛ➃◊✲⪅࠿ࡽ⛉ᏛࢆᏛࡰ࠺“ࠊᮏ㒓ࠊ2016 ᖺ 7 ᭶
Ḉ஭༤൤, "㨱ἲᩘ◊✲ RIPS ࠿ࡽ RIBF ࡬ࡢᒎ㛤࡜௒ᚋ"ࠊ᪥ᮏ≀⌮Ꮫ఍⛅ࡢศ⛉఍ࠊᐑ㷂኱Ꮫࠊ2016 ᖺ 9 ᭶

Posters Presentations[International Conference etc.]
M. Kaneko, “Experimental Study on the Symmetry Energy of Nuclear Matter with SpiRIT-TPC”, 14th International Symposium on Nuclei in the
Cosmos XIV, 19-24 Jun 2016, Toki-Messe, Niigata, Japan- 354 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Spin isospin Laboratory
1. Abstract
The Spin Isospin Laboratory pursues research activities putting primary focus on interplay of spin and isospin in exotic nuclei.
Understanding nucleosyntheses in the universe, especially those in r- and rp-processes is another big goal of our laboratory.
Investigations on isospin dependences of nuclear equation of state, spin-isospin responses of exotic nuclei, occurrence of various
correlations at low-densities, evolution of spin-orbit coupling are main subjects along the line. We are leading a mass measurement projectwith the Rare RI Ring project, too. Through the experimental studies, we will be able to elucidate a variety of nuclear phenomena in termsof interplay of spin and isospin, which will in turn, lead us to better understanding of our universe.

2. Major Research Subjects
(1)
(2)
(3)
(4)
(5)

Direct reaction studies of neutron-matter equation of state
Study of spin-isospin responses with RI-beams
R-process nucleosynthesis study with heavy-ion storage ring
Application of spin-polarization technique to RI-beam experiments and other fields
Development of special targets for RI-beam experiments

3. Summary of Research Activity(1) Direct reaction studies of neutron matter equation of state
Direct reactions induced by light-ions serve as powerful tools to investigate various aspects of nuclei. We are advancing experimental
programs to explore equation of state of neutron matter, via light-ion induced reactions with RI-beams.
(1-a) Determination of a neutron skin thickness by proton elastic scattering
A neutron skin thickness is known to have strong relevance to asymmetry terms of nuclear equation of state, especially to a term
proportional to density. The ESPRI project aims at determining density distributions in exotic nuclei precisely by proton elastic scattering atí0H9QXFOHRQ$QH[SHULPHQWIRU132Sn that is a flagship in this project has been successfully performed in 2016.
(1-b) Asymmetry terms in nuclear incompressibility
Nuclear incompressibility represents stiffness of nuclear matter. Incompressibility of symmetric nuclear matter is determined to be0H9EXWLWVLVRVSLQGHSHQGHQFHVWLOOKDVDODUJHXQFHUWDLQW\DWSUHVHQW$GLUHFWDSSURDFKWRWKHLQFRPSUHVVLELOLW\Rf asymmetricnucleaU PDWWHU LV DQ H[SHULPHQWDO GHWHUPLQDWLRQ RI HQHUJLHV RI LVRVFDODU JLDQW PRQRSROH UHVRQDQFHV *05  LQ KHDY\ QXFOHL :H KDYH
developed, in close collaboration with Center for Nuclear Study (CNS) of University of Tokyo, an active gas target for deuteron inelastic
VFDWWHULQJH[SHULPHQWVWRGHWHUPLQH*05HQHUJLHV7KHDFWLYHJDVWDUJHWKDVEHHQDOUHDG\WHVWHGZLWKR[\JHQDQG[HQRQEHDPVDW+,0$&
and finally has been applied to a 132Sn experiment in 2016.
(1-c) Multi-neutron and Į-cluster correlations at low densities
Occurrences of multi-QHXWURQ DQGĮ-cluster correlations are other interesting aspects of nuclear matter and define its low-density
behavior. The multi-neutron and Į-cluster correlations can be investigated with the large-DFFHSWDQFH 6$085$, VSHFWURPHter. The
6$085$, KDV EHHQ DOUHDG\ DSSOLHG WR H[SHULPHQWV WR H[SORUH OLJKW QHXWURQ-rich nuclei close to the dripline. We plan to reinforce
H[SHULPHQWDOFDSDELOLWLHVRIWKH6$085$,E\LQWURGXFLQJDGYDQFHGGHYLFHVVXFKDV0,126 6DFOD\ DQG1HX/$1' *6, (1-d) Fission barrier heights in neutron-rich heavy nuclei
The symmetry energy has a strong influence on fission barrier heights in neutron-rich nuclei. Knowledge on the fission barrier heights,
which is quite poor at present, is quite important for our proper understanding on termination of the r-process. We are planning to perform,
LQFROODERUDWLRQZLWKWKH780XQLFKJURXS SS -GHOD\HGILVVLRQH[SHULPHQWVDWWKH6$085$,WRGHWHUPLQHWKHILVVLRQEDUULHUKHLJKWVLQ
neutron-rich nuclei in Pb region.
(2) Study of spin-isospin responses with RI-beams
The study of spin-isospin responses in nuclei forms one of the important cores of nuclear physics. A variety of collective states, forexample isovector giant dipole resonances, isobaric analogue states, Gamow-Teller resonances, have been extensively studied by use ofelectromagnetic and hadronic reactions from stable targets.
The research opportunities can be largely enhanced with light of availabilities of radioactive isotope (RI) beams and of physics of
unstable nuclei. There are three possible directions to proceed. The first direction is studies of spin-isospin responses of unstable nuclei via
inverse-kinematics charge exchange reactions. A neutron-detector array WINDS has been constructed, under a collaboration of CNS, Tokyoand RIKEN, for inverse kinematics (p,n) experiments at the RI Beam Factory. We have already applied WINDS to the (p,n) experiments for
12Be, 132Sn and plan to extend this kind of study to other exotic nuclei.
The second direction is studies with RI-beam induced charge exchange reaction. RI-beam induced reactions have unique properties
which are missing in stable-beam induced reactions and can be used to reach the yet-to-be-discovered states. We have constructed the
SHARAQ spectrometer and the high-resolution beam-line at the RI Beam Factory to pursue the capabilities of RI-beam induced reactions
DVQHZSUREHVWRQXFOHL2QHRIWKHKLJKOLJKWVLVDQREVHUYDWLRQRIȕ+ W\SHLVRYHFWRUVSLQPRQRSROHUHVRQDQFHV ,9605 LQ 208Pb and 90Zr

- 355 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

via the (t, 3+H UHDFWLRQDW0H9QXFOHRQ
The third direction is studies of neutron- and proton-rich nuclei via stable-beam induced charge exchange reactions, which is
conducted under collaboration with Research Center for Nuclear Physics (RCNP), Osaka University. We have performed the double charge
exchange 12C(18O, 18Ne)12%HUHDFWLRQDW0H9QXFOHRQWRLQYHVWLJDWHVWUXFWXUHRIDQHXWURQ-rich 12Be nucleus. Peaks corresponding toground and excited levels in 12Be have been clearly observed. Another double charge exchange reaction, (12C, 12Be(02+)) are being used tosearch for double Gamow-Teller resonances.
(3) R-process nucleosynthesis study with heavy-ion storage ring
0RVWRIWKHU-process nuclei become within reach of experimental studies for the first time at RI Beam Factory at RIKEN. The Rare RI
Ring at RIBF is the unique facility with which we can perform mass measurements of r-process nuclei. Construction of the Rare RI Ringstarted in FY2012 in collaboration with Tsukuba and Saitama Universities. A major part of the ring has been completed and thecommissioning run is planned in FY2014.
We are planning to start precise mass measurements of r-process nuclei soon. A series of experiments will start with nuclei in the A=80
region and will be extended to heavier region.
(4) Application of spin-polarization technique to RI-beam experiments and other fields
A technique to produce nuclear polarization by means of electron polarization in photo-excited triplet states of aromatic molecules canopen new applications. The technique is called “Tripletd-DNP”. A distinguished feature of Triplet-DNP is that it works under a low
magnetic field of 0.1—0.7 T and temperature higher than 100 K, which exhibits a striking contrast to standard dynamic nuclear polarization(DNP) techniques working in extreme conditions of several Tesla and sub-Kelvin.
We have constructed a polarized proton target system for use in RI-beam experiments. Recent experimental and theoretical studies haverevealed that spin degrees of freedom play a vital role in exotic nuclei. Tensor force effects on the evolution of shell and possible
occurrence of p-n pairing in the proton-rich region are good examples of manifestations of spin degrees of freedom. Experiments with thetarget system allow us to explore the spin effects in exotic nuclei. It should be noted that we have recently achieved a proton polarization of
40% at room temperature in a pentacene-d14 doped p-terphenyl crystal.
Another interesting application of Triplet-DNP is sensitivity enhanFHPHQW LQ 105 VSHFWroscopy of biomolecules. We started a new
project in 2016 to apply the Triplet-DNP technique to study protein-protein interaction via two-GLPHQVLRQDO105VSHFWURVFRS\LQFORVH
collaboration with biologists and chemists.
(5) Development of special targets for RI-beam experiments
For the research activities shown above, we are developing and hosting special targets for RI-beam experiments listed below:a) Polarized proton target (described in (4))b) Thin solid hydrogen target
F 0,126(developed at Saclay and hosted by the Spin Isospin Laboratory)

Members
Chief Scientist (Lab. Head)Tomohiro UESAKA
Research & Technical Scientists
Ken-ichiro YONEDA (Senior Research Scientist,
concurrent ; Team Leader, User Support Office)
0DVDNL6ASANO (Research Scientist)

Juzo ZENIHIRO (Research Scientist)
6DUDK1$,0, 5HVHDUFK6FLHQWLVWContract Researcher
Daisuke NAGAE
Special Postdoctoral Researchers
Kenichiro TATEISHI
Yuki KUBOTA

Yuma KIKUCHI

Foreign Postdoctoral Researchers
Zaihong YANG
Postdoctoral Researchers
9DOHULL3$1,1

Fumi SUZAKI

Research Associate
0DVDPL6$.2
Takahiro NISHI
Kenichiro TATEISHI

Tsz Leung TANG


- 356 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Junior Research Associates
CheongSoo LEE (Univ. of Tokyo)
Fumi SUZAKI (Saitama Univ.)

6KXQLFKLUR20,.$ (Saitama Univ.)
Yuki KUBOTA (Univ. of Tokyo)

International Program Associates
6HUJH\&+(%27$5<29 .\XQJSRRN1DW¶O8QLY.)(YJHQL\9ODGLPLURYLFK0,/0$1 .\XQJSRRN1DW¶O8QLY.)

Zhuang GE (,QVWLWXWH RI 0Rdern Physics Chinese Academy of
Sciences,)
Julian KAHLBOW (Technical University Darmstadt)

Research Consultant
Harutaka SAKAGUCHI

Kazuko TANABE

Visiting Researchers
Stuhl LASZLO (JSPS Fellow)

Keiichi KISA025, -636)HOORZ)

Senior Visiting Scientists
Hiroyuki SAGAWA (Aizu Univ.)
Visiting Scientists'LGLHU%($80(/ ,PN)
Yasuyuki SUZUKI (Niigata Univ.)
Yosuke KONDO (Tokyo Tech.)
Zoltan ELEKES $720.,)+LGHWRVKL$.,081( .RQDQ8QLY<RKHL0$768'$ 2VDND8QLYYasuhiro TOGANO (Tokyo Tech.)
Satoshi SAKAGUCHI (Kyusyu Univ.)
Kenjiro 0,., TU Darmstadt)
9DOHULH/APOUX (CEA Saclay)
Alexandre OBERTELLI (CEA Saclay)
Alain GILLIBERT (CEA Saclay)
Emanuel POLLACCO (CEA Saclay)
Anna CORSI (CEA Saclay)'HQQLV08(&+(5 780
Yuma KIKUCHI (Osaka City Univ.)<XU\/,79,129 *6,
Yuhu ZHANG (CAS)
Igor GASPARIC (Ruder Boskovic Inst. Zagreb Croatia)+DQV7RVKLKLGH72(5149,67 78'DUPVWDGW
Christoph CAESAR (GSI)+DLN6,021 *6,
0DWWKLDV+2// 78'DUPVWDGW
7DND\XNL<$0$*8&+, 6DLWDPD8QLY
7DNDVKL1$.$085$ 7okyo Tech.)$WVXVKL7$0,, 2VDND8QLYAtWLOD.5$6=1$+25.$< $720.,

Takashi WAKUI (Tohoku Univ.)
Kimiko SEKIGUCHI (Tohoku Univ.)
Dorottya KUNNE SOHLER (Institute of Nuclear Research+XQJDULDQ$FDGHP\RI6FLHQFHV $720., )6DWRUX7(5$6+,0$ Beihang University)
9DOGLU*8,0$5$(6 Instituto de Fisica da Universidade de Sao
Paulo)<DVXWDND7$1,*8&+, 1LKRQ,QVWLWXWHRI0HGLFDO6FLHQFH
7HWVXDNL025,*8&+, 8QLYRI7VXNXEDKazuyuki OGATA (Osaka Univ.)
Shinji SUZUKI (Univ. of Tsukuba)=VROW9$-7$(Institute of Nuclear Research Hungarian Academyof ScieQFHV $720., )Istvan KUTI (Institute of Nuclear Research Hungarian Academy
RI6FLHQFHV $720., )0DNRWR1(*252 2VDND8QLY
Konstanze BORETZKY (GSI)
Zsolt FULOP (Institute of Nuclear Research Hungarian Academy
RI6FLHQFHV $720., )=VROW '20%5$', (Institute of Nuclear Research Hungarian$FDGHP\RI6FLHQFHV $720., )Akinori KAGAWA (Osaka Univ.)
Baohua SUN (Beihang Univ.)
Leyla ATAR (TU Darmstadt)=ROWDQ+$/$6= $720.,
Li-Gang CAO (North China Electric Power Univ.)
Kaori KAKI (Shizuoka Univ.)

Visiting Technicians
Tomomi KAWAHARA (Toho Univ.)
Gilles AUTHELET (CEA Saclay)
Jean-0DUF*+(//(5 &($6DFOD\
Cedric PERON (CEA Saclay)
Jean-Yves ROUSSE (CEA Saclay)'HQLV&$/9(7 &($6DFOD\
Alan PEYAUD (CEA Saclay)

Alain DELBART (CEA Saclay)
Frederic CHATEAU (CEA Saclay)
Caroline LAHONDE-+$0'281 &($6DFOD\
Arnaud GIGANON (CEA Saclay)
Daniel KOERPER (GSI)
Clement HILAIRE (CEA Saclay)

Student Trainees
Yasunori WADA (Tohoku Univ.)
Tatsuya FURUNO (Kyoto Univ.)
0LKR768085$ .\RWR8QLYJumpei YASUDA (Kyushu Univ.)
0L]XNL6+,.$7$ Tokyo Tech.)
Junichi TSUBOTA (Tokyo Tech.)Yuuki TAKEUCHI (Saitama Univ.)
6\XQLFKLURX2+0,.$ 6DLWDPD8QLY+LURVKL0,85$ 6DLWDPD8QLY
7DNXPD1,6+,085$ 6DLWDPD8QLY
0RWRNL085$7$ .\RWR8QLYSyuQVXNH.$:$.$0, 0L\D]DNL8QLY

Daijiro ETO (Tohoku Univ.)
Junki TANAKA (Osaka Univ.)
Sebastian Benedikt REICHERT (TU 0unchen)
Tomoyuki OZAKI (Tokyo Tech.)Atsumi SAITO (Tokyo Tech.)
Yusuke SHINDO (Kyushu Univ.)
0XQHPL7$%$7$ .\XVKX8QLY
Atomu WATANABE (Tohoku Univ.)
Ayaka OHKURA (Kyushu Univ.)
Yukina ICHIKAWA (Univ. of Tsukuba).RWDUR<$0$'$ 7RKR8QLY
Tomoaki KANEKO (Toho Univ.)- 357 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESJulian KAHLBOW (TU Darmstadt)
Taras LOKOTKO (Univ. of Hong Kong)'DKHH.,0 Ewha Womans Univ.)
Natsuki TADANO (Saitama Univ.)
Ikuma KATO (Saitama Univ.)
Tomomi AKIEDA (Tohoku Univ.)
Hiroshi KON (Tohoku Univ.)
7RPR\XNL08.$, 7RKRNX8QLY
Shinnosuke NAKAI (Tohoku Univ.)
7DNDWR720$, Tokyo Tech.)$NLKLUR+,5$<$0$ Tokyo Tech.)
Yoshiyuki TAJIRI (Univ. of Tsukuba)
Kentaro HIRAISHI (Univ. of Tsukuba)
Simon LINDBERG (Chalmers University of Technology)
0DVDPLFKL$0$12 8QLYRI7VXNXED
Daisuke SAKAE (Kyushu Univ.)<DVXDNL125,0$768 Kyushu Univ.)
Takahiro FUKUTA (Kyushu Univ.)<RXKHL$.,<$0$ .\XVKX8QLY.L\RVKL:$.$<$0$ 6DLWDPD8QLY+DQ+DJHQ0$<(5 University of Cologne)
7DNDKLUR025,0272 .\RWR8QLY

Katsuyoshi HEGURI (Konan Univ.)
7DNX\D0$7680272 8QLYRI7VXNXEDTomoya HARADA (Toho Univ.).RVHL7$1,8( 8QLYRI0L\D]DNL
0DVDKLUR<$68'$ 7RN\R7HFK+LURNL<$0$'$ 7RN\R7HFK-XQ2.$0272 7RKRNX8QLY.)
Yu NASU (Tohoku Univ.)
6KRWD0$7680272 .\RWR8QLY
Simon GIRAUD (Université de Nantes)
Yu ANDO (Kyungpook National Univ.)
Sonja STORCK (TU Darmstadt)
Ina Josephine SYNDIKUS (TU Darmstadt)
0D\XNR0$7680272 7RN\R7HFK'DLNL.$0,2.$ 8QLY of Tsukuba)
Christopher LEHR (TU Darmstadt)
Tomoya FUJII (Saitama Univ.).XQLPLWVX1,6+,0852 6DLWDPD8QLY
Ryo IGOSAWA (Saitama Univ.).XPL,120$7$ 6DLWDPD8QLY
Hiroki ARAKAWA (Saitama Univ.)
Jan Daniel STEINHAUSER (Tokyo Tech.)Interns
Lily SIEGENBERG (Univ. of Surrey)
Quentin Nathanael DESHAYES (Universite de Caen Normandie)

David HEGEDUES (Eotvos Lorand Univ.)

Part-time Worker.RWDUR<$0$'$
Assistants
Emiko ISOGAI
Yu NAYA

Yuri TSUBURAI
1RULNR.,<$0$

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
P. Moller, A.J. Sierk, T. Ichikawa, H. Sagawa, Nuclear ground-state masses and deformations: FRDM(2012), Atomic Data and Nuclear Data
Tables, Volume 109, 1 (2016).
J. Yasuda, M. Sasano, R.G.T. Zegers, H. Baba, W. Chao, M. Dozono, N. Fukuda, N. Inabe, T. Isobe, G. Jhang, D. Kameda, T. Kubo, M.
Kurata-Nishimura, E. Milman, T. Motobayashi, H. Otsu, V. Panin, W. Powell, H. Sakai, M. Sako, H. Sato, Y. Shimizu, L. Stuhl, H. Suzuki, S.
Tangwancharoen, H. Takeda, T. Uesaka, K. Yoneda, J. Zenihiro, T. Kobayashi, T. Sumikama, T. Tako, T. Nakamura, Y. Kondo, Y. Togano, M.
Shikata, J. Tsubota, K. Yako, S. Shimoura, S. Ota, S. Kawase, Y. Kubota, M. Takaki, S. Michimasa, K. Kisamori, C.S. Lee, H. Tokieda, M.
Kobayashi, S. Koyama, N. Kobayashi, T. Wakasa, S. Sakaguchi, A. Krasznahorkay, T. Murakami, N. Nakatsuka, M. Kaneko, Y. Matsuda, D.
Mucher, S. Reichert, D. Bazin, J.W. Lee, Inverse kinematics reactions studies using the WINDS slow neutron detector and the SAMURAI
spectrometer, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 376,
393 (2016).
E. Minaya Ramirez, P. Alfaurt, M. Aouadi, P. Ascher, B. Blank, K. Blaum, J.-F. Cam, P. Chauveau, L. Daudin, P. Delahaye, F. Delalee, P. Dupre,
S. El Abbeir, M. Gerbaux, S. Grevy, H. Guerin, D. Lunney, F. Metz, S. Naimi, L. Perrot, A. de Roubin, L. Serani, B. Thomas, J.-C. Thomas,
Conception of PIPERADE: A high-capacity Penning-trap mass separator for high isobaric contamination at DESIR, Nuclear Instruments andMethods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 376, 298 (2016).
H. Otsu, S. Koyama, N. Chiga, T. Isobe, T. Kobayashi, Y. Kondo, M. Kurokawa, W.G. Lynch, T. Motobayashi, T. Murakami, T. Nakamura, M.
Kurata-Nishimura, V. Panin, H. Sato, Y. Shimizu, H. Sakurai, M.B. Tsang, K. Yoneda, H. Wang, SAMURAI in its operation phase for RIBF
users, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 376, 175(2016).
Yusuke Tanimura and Hiroyuki Sagawa, Three-body model for an isoscalar spin-triplet neutron-proton pair in 102Sb, Physical Review C 93,
064319 (2016)(*DQLR÷OX, H. Fujita, B. Rubio, Y. Fujita, T. Adachi, A. Algora, M. Csatlós, J. M. Deaven, E. Estevez-Aguado, C. J. Guess, J. Gulyás, K.
Hatanaka, K. Hirota, M. Honma, D. Ishikawa, A. Krasznahorkay, H. Matsubara, R. Meharchand, F. Molina, H. Okamura, H. J. Ong, T. Otsuka,
G. Perdikakis, C. Scholl, Y. Shimbara, G. Susoy, T. Suzuki, A. Tamii, J. H. Thies, R. G. T. Zegers, and J. Zenihiro, High-resolution study ofGamow-Teller transitions in the 48Ti(3He,t)48V reaction, Physical Review C 93, 064326 (2016)
J.W. Zhao, B.H. Sun, I. Tanihata, S. Terashima, L.H. Zhu, A. Enomoto, D. Nagae, T. Nishimura, S. Omika, A. Ozawa, Y. Takeuchi, T.
Yamaguchi, Reaching time resolution of less than 10ps with plastic scintillation detectors, Nuclear Instruments and Methods in Physics
Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 823, 41 (2016).
Y H Zhang, Yu A Litvinov, T Uesaka and H S Xu, Storage ring mass spectrometry for nuclear structure and astrophysics research, Physica- 358 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Scripta 91, 073002 (2016).
H Sagawa, C L Bai and G Colò, Isovector spin-singlet (T = 1, S = 0) and isoscalar spin-triplet (T = 0, S = 1) pairing interactions and spin-isospin
response, Physica Scripta 91, 083011 (2016)
Xian-Rong Zhou, E. Hiyama, and H. Sagawa, Exotic structure of medium-heavy hypernuclei in the Skyrme Hartree-Fock model, PhysicalReview C 94, 024331 (2016)
E Hiyama, Y Yamamoto and H Sagawa, The structure of hypernuclei and hyperon mixing in neutron-star matter, Physica Scripta 91, 093001(2016)
M. Dozono, T. Uesaka, S. Michimasa, M. Takaki, M. Kobayashi, M. Matsushita, S. Ota, H. Tokieda, and S. Shimoura, Separated flow operationof the SHARAQ spectrometer for in-flight proton-decay experiments, Nuclear Instruments and Methods in Physics Research Section A:
Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 830, 233 (2016)
Yuma Kikuchi, Kazuyuki Ogata, Yuki Kubota, Masaki Sasano, and Tomohiro Uesaka, Determination of a dineutron correlation in Borromean
nuclei via a quasi-free knockout (p,pn) reaction, Progress of Theoretical and Experimental Physics 2016, 103D03 (2016)
X. Roca-Maza, Li-Gang Cao, G. Colò, and H. Sagawa, Fully self-consistent study of charge-exchange resonances and the impact on thesymmetry energy parameters, Physical Review C 94, 044313 (2016).
Zhen-Yu Zhu, Ang Li, Jin-Niu Hu, and Hiroyuki Sagawa, ǻ(1232) effects in density-dependent relativistic Hartree-Fock theory and neutronstars, Physical Review C 94, 045803 (2016).
H. Sagawa, T. Suzuki, and M. Sasano, Effect of isoscalar spin-triplet pairings on spin-isospin responses in sd-shell nuclei, Physical Review C
94, 041303(R) (2016).
X. Xu, P. Zhang, P. 6KXDL5ௗ-&KHQ;ௗ/<DQ, Yௗ+=KDQJ0:DQJ, <Xௗ$/LWYLQRY+ௗ6;X, T. %DR;ௗ&&KHQ+&KHQ&ௗY. Fu, S.
.XERQR<ௗ+/DP'ௗ:/LX5ௗ60DR;ௗ:0D0ௗ=6XQ;ௗ/7X<ௗ0;Lng-ௗ&<DQJ<ௗ-<XDQ4=HQJ, X. Zhou;ௗ+=KRX:ௗ/Zhan, S. Litvinov, K. Blaum, G. Audi, T. Uesaka, Y. Yamaguchi, T. Yamaguchi, A. Ozawa, B.ௗ+ 6XQ < 6XQ $ௗ& 'DL DQG )ௗ5 ;X,
Identification of the Lowest T = 2, Jʌ = 0+ Isobaric Analog State in 52Co and Its Impact on the Understanding of ȕ-Decay Properties of 52Ni,
Physical Review Letters 117, 182503 (2016)
T. Uesaka, Spins in exotic nuclei: RI beam experiments with polarized targets, The European Physical Journal Plus 131, 403 (2016)
D. T. Tran, H. J. Ong, T. T. Nguyen, I. Tanihata, N. Aoi, Y. Ayyad, P. Y. Chan, M. Fukuda, T. Hashimoto, T. H. Hoang, E. Ideguchi, A. Inoue, T.
Kawabata, L. H. Khiem, W. P. Lin, K. Matsuta, M. Mihara, S. Momota, D. Nagae, N. D. Nguyen, D. Nishimura, A. Ozawa, P. P. Ren, H.
Sakaguchi, J. Tanaka, M. Takechi, S. Terashima, R. Wada, and T. Yamamoto, Charge-changing cross-section measurements of 12–16C ataround 45 AMeV and development of a Glauber model for incident energies 10 A–2100 AmeV, Physical Review C 94, 064604 (2016)
J.C. Zamora, T. Aumann, S. Bagchi, S. B㺡㺔nig, M. CsatlRs, I. Dillmann, C. Dimopoulou, P. Egelhof, V. Eremin, T. Furuno, H. Geissel, R.
Gernhaeuser, M.N. Harakeh, A.-L. Hartig, S. Ilieva, N. Kalantar-Nayestanaki, O. Kiselev, H. Kollmus, C. Kozhuharov, A. Krasznahorkay, Th.
KrRll, M. Kuilman, S. Litvinov, Yu.A. Litvinov, M. Mahjour-Shafiei, M. Mutterer, D. Nagae, M.A. Najafi, C. Nociforo, F. Nolden, U. Popp, C.
Rigollet, S. Roy, C. Scheidenberger, M. von Schmid, M. Steck, B. Streicher, L. Stuhl, M. Thurauf, T. Uesaka, H. Weick, J.S. Winfield, D.
Winters, P.J. Woods, T. Yamaguchi, K. Yue, J. Zenihiro, First measurement of isoscalar giant resonances in a stored-beam experiment,
Physics Letters B, Volume 763, 16 (2016).
T. T. Sun, E. Hiyama, H. Sagawa, H.-J. Schulze, and J. Meng, Mean-field approaches for ȄíK\SHUQXFOHL DQG FXUUHQW H[SHULPHQWDO GDWD,
Physical Review C 94, 064319 (2016)
H. Sagawa and T. Uesaka, Sum rule study for double Gamow-Teller states, Physical Review C 94, 064325 (2016).
Y. F. Niu, G. Colò, E. Vigezzi, C. L. Bai, and H. Sagawa, Quasiparticle random-phase approximation with quasiparticle-vibration coupling:
Application to the Gamow-Teller response of the superfluid nucleus 120Sn, Physical Review C 94, 064328 (2016).
N. Paul, A. Corsi, A. Obertelli, P. Doornenbal, G. Authelet, H. Baba, B. Bally, M. Bender, D. Calvet, F. Château, S. Chen, J.-P. Delaroche, A.
Delbart, J.-M. Gheller, A. Giganon, A. Gillibert, M. Girod, P.-H. Heenen, V. Lapoux, J. Libert, T. Motobayashi, M. Niikura, T. Otsuka7ௗ5
Rodríguez, J.-Y. Roussé, H. Sakurai, C. Santamaria, N. Shimizu, D. Steppenbeck, R. Taniuchi, T. Togashi, Y. Tsunoda, T. Uesaka, T. Ando,
T. Arici, A. Blazhev, F. Browne$ௗM. Bruce, R. Carroll, /ௗ;&KXQJ0ௗ/&RUWpV, M. Dewald, B. Ding, F. Flavigny, S. Franchoo, M. Górska,
A. Gottardo, A. Jungclaus, J. Lee, M. Lettmann, %ௗ' /LQK - /LX = /LX, C. Lizarazo, S. Momiyama, K. Moschner, S. Nagamine, N.
NakaWVXND&1LWD&ௗ51REV, L. Olivier, Z. Patel, Zs. Podolyák, M. Rudigier, T. Saito, C. Shand, P.-A. Söderström, I. Stefan, R. Orlandi, V.
Vaquero, V. Werner, K. Wimmer, and Z. Xu, Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of
110Zr, Physical Review Letters 118, 032501 (2017).
K. Hagino and H. Sagawa, New concept for the pairing anti-halo effect as a localized wave packet of quasiparticles, Physical Review C 95,
024304 (2017).
P. Zhang, X. Xu, P. Shuai, R.J. Chen, X.L. Yan, Y.H. Zhang, M. Wang, Yu.A. Litvinov, K. Blaum, H.S. Xu, T. Bao, X.C. Chen, H. Chen, C.Y. Fu,
J.J. He, S. Kubono, Y.H. Lam, D.W. Liu, R.S. Mao, X.W. Ma, M.Z. Sun, X.L. Tu, Y.M. Xing, J.C. Yang, Y.J. Yuan, Q. Zeng, X. Zhou, X.H. Zhou,
W.L. Zhan, S. Litvinov, G. Audi, T. Uesaka, Y. Yamaguchi, T. Yamaguchi, A. Ozawa, B.H. Sun, Y. Sun, and F.R. Xu, High-precision QECYDOXHVRIVXSHUDOORZHGĺȕ-emitters 46Cr, 50Fe and 54Ni, Physics Letters B, Volume 767, 20 (2017).
S. Chen, P. Doornenbal, A. Obertelli, T. R. Rodríguez, G. Authelet, H. Baba, D. Calvet, F. Château, A. Corsi, A. Delbart, J.-M. Gheller, A.
Giganon, A. Gillibert, V. Lapoux, T. Motobayashi, M. Niikura, N. Paul, J.-Y. Roussé, H. Sakurai, C. Santamaria, D. Steppenbeck, R. Taniuchi,
T. Uesaka, T. Ando, T. Arici, A. Blazhev, F. Browne, A. M. Bruce, R. Caroll, L. X. Chung, M. L. Cortés, M. Dewald, B. Ding, F. Flavigny, S.
Franchoo, M. Górska, A. Gottardo, A. Jungclaus, J. Lee, M. Lettmann, B. D. Linh, J. Liu, Z. Liu, C. Lizarazo, S. Momiyama, K. Moschner, S.
Nagamine, N. Nakatsuka, C. R. Nita, C. Nobs, L. Olivier, R. Orlandi, Z. Patel, Zs. Podolyak, M. Rudigier, T. Saito, C. Shand, P.-A.
Söderström, I. Stefan, V. Vaquero, V. Werner, K. Wimmer, and Z. Xu, Low-lying structure and shape evolution in neutron-rich Se isotopes,
Physical Review C 95, 041302(R) (2017).
06FRWW5ௗ*ௗ7=HgerV5$OPXV6DP0$XVWLQ'%D]LQ%ௗ$%URZQ, C. Campbell, A. Gade, M. Bowry, S. GaOqV8*DUJ0ௗ1+DUDNHK,
E. Kwan, C. Langer, C. Loelius, S. Lipschutz, E. Litvinova, E. Lunderberg, C. Morse, S. Noji, G. Perdikakis, T. Redpath, C. Robin, H. Sakai,
Y. Sasamoto, M. Sasano, C. Sullivan, -ௗ$7RVWHYLQ78HVDND, and D. Weisshaar, Observation of the Isovector Giant Monopole Resonancevia the 28Si(10Be, 10B‫[כ‬1.74 MeV]) Reaction at 100 AmeV, Physical Review Letters 118, 172501 (2017).
N. Nakatsuka, H. Baba, T. Aumann, R. Avigo, S.R. Banerjee, A. Bracco, C. Caesar, F. Camera, S. Ceruti, S. Chen, V. Derya, P. Doornenbal, A.
Giaz, A. Horvat, K. Ieki, T. Inakura, N. Imai, T. Kawabata, N. Kobayashi, Y. Kondo, S. Koyama, M. Kurata-Nishimura, S. Masuoka, M.
Matsushita, S. Michimasa, B. Million, T. Motobayashi, T. Murakami, T. Nakamura, T. Ohnishi, H.J. Ong, S. Ota, H. Otsu, T. Ozaki, A. Saito, H.
Sakurai, H. Scheit, F. Schindler, P. Schrock, Y. Shiga, M. Shikata, S. Shimoura, D. Steppenbeck, T. Sumikama, I. Syndikus, H. Takeda, S.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESTakeuchi, A. Tamii, R. Taniuchi, Y. Togano, J. Tscheuschner, J. Tsubota, H. Wang, O. Wieland, K. Wimmer, Y. Yamaguchi, K. Yoneda, and J.
Zenihiro, Observation of isoscalar and isovector dipole excitations in neutron-rich 20O, Physics Letters B, Volume 768, 387 (2017).
K. Sawahata, A. Ozawa, Y. Saito, Y. Abe, Y. Ichikawa, N. Inaba, Y. Ishibashi, A. Kitagawa, S. Matsunaga, T. Moriguchi, D. Nagae, S. Okada, S.
Sato, S. Suzuki, T. Suzuki, Y. Takeuchi, T. Yamaguchi, J. Zenihiro, Investigations of charge-changing processes for light proton-rich nuclei
on carbon and solid-hydrogen targets, Nuclear Physics A, Volume 961, 142 (2017).
J. Li, Y. L. Ye, Z. H. Li, C. J. Lin, Q. T. Li, Y. C. Ge, J. L. Lou, Z. Y. Tian, W. Jiang, Z. H. Yang, J. Feng, P. J. Li, J. Chen, Q. Liu, H. L. Zang, B.
Yang, Y. Zhang, Z. Q. Chen, Y. Liu, X. H. Sun, J. Ma, H. M. Jia, X. X. Xu, L. Yang, N. R. Ma and L. J. Sun, Selective decay from a candidateof the Ȫ-bond linear-chain state in 14C, Physical Review C 95, 021303(R) (2017).
G. Audi, F.G. Kondev, Meng Wang, W.J. Huang, and S. Naimi, The NUBASE2016 evaluation of nuclear properties, Chinese Physics C 41,
030001 (2017).
W.J. Huang, G. Audi, Meng Wang, F.G. Kondev, S. Naimi, and Xing Xu, The AME2016 atomic mass evaluation (I). Evaluation of input data;
and adjustment procedures, Chinese Physics C 41, 030002 (2017).
Meng Wang, G. Audi, F.G. Kondev, W.J. Huang, S. Naimi, and Xing Xu, The AME2016 atomic mass evaluation (II). Tables, graphs andreferences, Chinese Physics 41, 030003 (2017).
[Proceedings](Original Papers) *Subject to Peer Review
J. Yasuda, T. Wakasa, M. Dozono, T. Fukunaga, S. Gotanda, K. Hatanaka, Y. Kanaya, Y. Maeda, Y. Maeda, K. Miki, Y. Nishio, T. Noro, K.
Ohnaka, S. Sakaguchi, Y. Sakemi, K. Sekiguchi, A. Tamii, T. Taguchi, Y. Wada, Development of Neutron Polarization Measurement System
for Studying NN interaction in Nuclear Medium, International Journal of Modern Physics: Conference Series 40, 1660073 (2016).
Satoshi Sakaguchi, Tomohiro Uesaka, Takashi Wakui, Sergey Chebotaryov, Tomomi Kawahara, Shoichiro Kawase, Evgeniy Milman, Tsz
Leung Tang, Kenichiro Tateishi, and Takashi Teranishi, Studies of Unstable Nuclei with Spin-Polarized Proton Target, International Journalof Modern Physics: Conference Series 40, 1660071 (2016).
K. Sekiguchi, Y. Wada, A. Watanabe, D. Eto, T. Akieda, H. Kon, K. Miki, N. Sakamoto, H. Sakai, M. Sasano, Y. Shimizu, H. Suzuki, T. Uesaka,
Y. Yanagisawa, M. Dozono, S. Kawase, Y. Kubota, C. S. Lee, K. Yako, Y. Maeda, S. Kawakami, T. Yamamoto, S. Sakaguchi, T. Wakasa, J.
Yasuda, A. Ohkura, Y. Shindo, M. Tabata, E. Milman,S. Chebotaryov, H. Okamura, and T. L. Tang, Deuteron Analyzing Powers for dp Elastic
Scattering at Intermediate Energies and Three-Nucleon Forces, The 23rd European Conference on Few-Body Problems in Physics, 48(2017).
Oral Presentations[International Conference etc.]
T. Uesaka, ``R-process studies at RIBF’’, ICNT Workshop “The r-process nucleosynthesis: connecting FRIB with the cosmos”, East Lansing,USA, 6—10 June, 2016
T. Uesaka, ``RIBF’s challenge to the r-process nucleosynthesis’’, 14th International Symposium on Nuclei in the Cosmos (NIC-XIV), Niigata,Japan, 19—24 June 2016.
T. Uesaka, ``(d,p) and Knockout reactions with high momentum transfer’’, ECT* Workshop ``Three-body systems in reactions with rareisotopes’’, Trento, Italy, 3—7 October, 2016
T. Uesaka, ``Studies of neutron-rich nuclei at RIBF – from tetraneutron to fission’’, 6th International Conference on Fission and properties ofneutron-rich nuclei, Florida, USA, 6—12 November 2016.
T. Uesaka, Y. Yamazaki, H. Katori, S. Ulmer, ``Extreme precision to Explore fundamental physics with Exotic particles’’, Symposium for
exploring prospective research ``Pioneering New Fields: Forefront of RIKEN’s Science and Beyond’’, Saitama, Japan, 21—22 Novemeber
2016
T. Uesaka, ``Looking Through Double Charge Exchange Reactions’’, ISOLDE Workshop and Users meeting 2016, Zurich, 7—9 December
2016.
H. Sagawa and P. Moller, ``New mass model FRDM2012 and symmetry energy’’, 14th International Symposium on Nuclei in the Cosmos(NIC-XIV), Niigata, Japan, 19—24 June 2016.
H. Sagawa, ``Three-body model for exotic nuclei’’, XXIII Nuclear Physics Workshop, Kazimeirz, Poland, 17 Sept.—1 Oct. 2016.
H. Sagawa, ``Pairing and di-neuron correlations in Exotic Nuclei’’, RAON/RISP workshop, Deajone, Korea, 28 Oct., 2016.
H. Sagawa, ``Nuclear models and Hyperons’’, invited seminar, Soongsil University, Seoul, Korea, 31 Oct., 2016.
H. Sagawa, ``Isoscalar pairing and spin-isospin response’’, 1st RIKEN-Tsukuba-CNS workshop, Japan, 12—15 December 2016.
H. Sagawa, ``Three-body model for nuclei near and beyond drip line’’, Recent Progresses in Nuclear Structure Physics 2016 (NSP2016),
Kyoto, Japan, 21 December 2016.
H. Sagawa, ``Isoscalar pairing and spin-isospin response’’, Workshop on spin-isospin excitations and related nuclear structure problems,
Milano, Italy, 13—14 March 2017.
M. Sasano, ``Study Of Gamow-Teller Transitions from 132Sn Via The Inverse Kinematics (p,n) Reaction’’, INPC2016, Adelaide, Australia,
11—16 Spetember 2016.
M. Sasano, ``Status report on studies of GT transitions via the (p,n) reaction and (p,2p) fission at SAMURAI’’,SAMURAI international
workshop 2016 , Kyushu, Japan, 5—6 September 2016.
M. Sasano, ``Fission study project in RIKEN RIBF: towards the “complete” measurement of fission observables’’, 6th Workshop on Nuclear
Fission and Spectroscopy of Neutron-Rich Nuclei, Chamrousse, Fracne, 20—24 March 2017.
L. Stuhl, ``A New Low-energy Plastic Scintillation Neutron Detector For Real Time Pulse Shape Discrimination’’, INPC2016, Adelaide,
Australia, 11—16 Spetember 2016.
Y. Kubota, ``Study of neutron-neutron correlation in Borromean nucleus 11Li via the (p,pn) reaction’’, DREB2016, Halifax, Canada, 11—15
July 2016
Y. Kubota, ``Study On Neutron-neutron Correlation In Borromean Nucleus 11Li Via The Quasi-free (p,pn) Reaction’’, INPC2016, Adelaide,
Australia, 11—16 Spetember 2016.
Y. Kubota, ``Probing neutron-neutron correlation in Borromean nuclei via the quasi-free (p,pn) reaction’’,SAMURAI international workshop
2016 , Kyushu, Japan, 5—6 September 2016.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

J. Zenihiro, ``Proton elastic scattering and nucleon density distributions’’, International Symposium on Neutron Star Matter (NSMAT2016),
Sendai, Japan, 21—24 November 2016.
D. Nagae, `` The rare-RI ring at RIKEN RI beam factory’’, International Symposium on Neutron Star Matter (NSMAT2016), Sendai, Japan,
21—24 November 2016.
V. Panin, ``Heavy-ion-proton experiments at SAMURAI: challenges and perspectives’’,SAMURAI international workshop 2016 , Kyushu,
Japan, 5—6 September 2016.
J. Yasuda, ``Study of Gamow Teller strength from 132Sn via the inverse kinematics (p,n) reaction’’, DREB2016, Halifax, Canada, 11—15 July
2016
T. Tang, ``Quasi-free proton knockout of 23,25F’’, DREB2016, Halifax, Canada, 11—15 July 2016
Y. Zaihong, `` Study on the Dineutron Decay in 8He’’, Workshop on Nuclear Clustering, Beijing, China, 2—3 July 2016.
Y. Zaihong, ``Study on the cluster structure in nuclei using direct reactions’’, Cluster16, Napoli, Italy, 23—27 May 2016.
Y. Zaihong, ``Status and Results of SAMURAI018’’, 5th Sunflower workshop, Hongkong, China, 18—20 September 2016.
Y. Zaihong, ``Study of cluster structure in light nuclei by using neutron-rich Carbon isotope beams’’,SAMURAI international workshop 2016 ,Kyushu, Japan, 5—6 September 2016.
T. Lokotko, ``Spectroscopy of 69,71,73Co isotopes’’, 5th Sunflower workshop, Hongkong, China, 18—20 September 2016.
M. Tsumura, ``Search for the rare g-decay mode in 12C’’, Cluster16, Napoli, Italy, 23—27 May 2016.
T. Furuno, `` An active target MAIKo to investigate cluster structures in unstable nuclei’’, Cluster16, Napoli, Italy, 23—27 May 2016.
S. Sakaguchi, ``Polarized proton target at SAMURAI: elastic scattering of 6He from polarized proton’’,SAMURAI international workshop
2016 , Kyushu, Japan, 5—6 September 2016.
[Domestic Conference]
M. Sasano, “Study of nuclear fission via the (p,2p) reaction at RIBF”, ➨8ᅇ ೵Ṇ࣭ప㏿RIࣅ࣮࣒ࢆ⏝࠸ࡓ᰾ศග◊✲఍(SSRI), Wako, Japan,
4—5 March 2016ୖᆏ཭ὒ͆ࢺࣜࣉࣞࢵࢺ'13ἲࡢ᭱㏆ࡢ㐍ᒎ࡜⏕≀Ꮫ◊✲࡬ࡢᛂ⏝͇᪥ᮏ≀⌮Ꮫ఍ ᖺ⛅Ꮨ኱఍ᐑᓮ᪥ᮏᖺ᭶᪥̾᭶
᪥ୖᆏ཭ὒࠊ❧▼೺୍㑻ࠊ``ࢺࣜࣉࣞࢵࢺDNP ~᪂ࡓ࡞᰾೫ᴟἲࡢྍ⬟ᛶ~’’, ➨18ᅇCROSSroads Workshop ࠕ೫ᴟࢱ࣮ࢤࢵࢺ࡜೫ᴟ୰ᛶᏊ
ᢏ⾡㛤Ⓨࠖ, ᮾᾏᮧ, ᪥ᮏ, 2016ᖺ6᭶15᪥
ୖᆏ཭ὒࠊ❧▼೺୍㑻ࠊ``ࢺࣜࣉࣞࢵࢺDNP ~㧗 ࣭ప☢ሙ࡛ࡢ᰾೫ᴟ⏕ᡂ࡜ࢱࣥࣃࢡ㉁◊✲࡟࠾ࡅࡿᒎᮃ~’’, ᪂ୡ௦◊✲ᡤ2016ᖺᗘỈ࿴ࢼࣀᵓ㐀࣭ࣂ࢖࢜༢ศᏊྜྠ◊✲఍, ᮾி, ᪥ᮏ, 2017ᖺ3᭶27᪥
S. Chebotaryov, “Experiment on elastic scattering of polarized protons from neutronrich 6He isotopes at 200 MeV/nucleon”, ᪥ᮏ≀⌮Ꮫ఍
2016ᖺ⛅Ꮨ኱఍, ᐑᓮ, ᪥ᮏ, 2016ᖺ9᭶21᪥—9᭶24᪥.
E. Milman, “Search for low-lying resonances in 10N structure via 9C + p resonant scattering”, ᪥ᮏ≀⌮Ꮫ఍ 2016ᖺ⛅Ꮨ኱఍, ᐑᓮ, ᪥ᮏ,
2016ᖺ9᭶21᪥—9᭶24᪥.
ὠᮧ⨾ಖ͆&ཎᏊ᰾࡟࠾ࡅࡿ⛥Țᔂቯ࣮ࣔࢻ᥈⣴ࡢࡓࡵࡢࢸࢫࢺᐇ㦂͇᪥ᮏ≀⌮Ꮫ఍ ᖺ⛅Ꮨ኱఍ᐑᓮ᪥ᮏᖺ᭶᪥̾᭶᪥.
బᕝᘯᖾ, “ࢫࣆࣥ࢔࢖ࢯࢫࣆࣥᛂ⟅࠿ࡽ᥈ࡿᑐ┦㛵࡜ࢸࣥࢯࣝຊ”, ᪥ᮏ≀⌮Ꮫ఍ (ࢩ࣏ࣥࢪ࣒࢘ㅮ₇) 2016ᖺ⛅Ꮨ኱఍, ᐑᓮ, ᪥ᮏ, 2016ᖺ
9᭶21᪥—9᭶24᪥
Y. Zaihong, “Two-neutron decay of 8He excited states”, Workshop on Cluster Physics 2016 (WNCP2016), Yokohama, Japan, 14—17
November 2016.
኱⏎⯗୍ᮁ, “⛥ᑡRIࣜࣥࢢࡢࡓࡵࡢ⢏Ꮚ࿘ᅇࣔࢽࢱ࣮ࡢ㛤Ⓨ”, ᪥ᮏ≀⌮Ꮫ఍ 2017ᖺ᫓Ꮨ኱఍, ㇏୰, ᪥ᮏ, 2017ᖺ3᭶17᪥—3᭶20᪥.
Zhuang GE, “Development of Large area position sensitive MCP detector at Rare RI Ring”, ᪥ᮏ≀⌮Ꮫ఍ 2017ᖺ᫓Ꮨ኱఍, ㇏୰, ᪥ᮏ,
2017ᖺ3᭶17᪥—3᭶20᪥.
㑣㡲⿱͆ᔂቯȘ⢏Ꮚ ᐃ࡟ࡼࡿⅣ⣲ࡢȘࢡࣛࢫࢱ࣮࢞ࢫ≧ែࡢ᥈⣴͇᪥ᮏ≀⌮Ꮫ఍ᖺ᫓Ꮨ኱఍㇏୰᪥ᮏᖺ᭶᪥̾
᭶᪥
ྂ㔝㐩ஓ͆0$,.R࢔ࢡࢸ࢕ࣈᶆⓗࢆ⏝࠸ࡓ&ࡢ㉁㔞Ḟᦆศග͇᪥ᮏ≀⌮Ꮫ఍ᖺ᫓Ꮨ኱఍㇏୰᪥ᮏᖺ᭶᪥̾᭶᪥
6&KHERWDU\RY“Status of data analysis from experiment on p-6He elastic scattering at 200 MeV/nucleon”, ᪥ᮏ≀⌮Ꮫ఍ 2017ᖺ᫓Ꮨ኱఍,㇏୰, ᪥ᮏ, 2017ᖺ3᭶17᪥—3᭶20᪥.
❧▼೺୍㑻,͆ಙྕቑ኱ẚ660ಸࢆ㉸࠼ࡿගບ㉳୕㔜㡯㟁Ꮚࢆ⏝࠸ࡓDNP" (ᣍᚅㅮ₇) ➨44ᅇ ᪥ᮏ☢Ẽඹ㬆་Ꮫ఍኱఍ࢫࢱࢹ࢕ࢢ࣮ࣝࣉ
㸦㉸೫ᴟ࡟ࡼࡿ௚᰾MRSIࡢ㧗ឤᗘィ 㸧㸪኱ᐑࢯࢽࢵࢡࢩࢸ࢕ 2016ᖺ9᭶10᪥.
❧▼೺୍㑻, ͆ගບ㉳୕㔜㡯㟁Ꮚࢫࣆࣥࢆ⏝࠸ࡓືⓗ᰾೫ᴟ࡟ࡼࡿᐊ ࡛ࡢ1Hࢫࣆࣥ೫ᴟ⋡40%ࡢ㐩ᡂ͇ ᪥ᮏ≀⌮Ꮫ఍ 2016ᖺ⛅Ꮨ኱఍㸪㔠ἑ኱Ꮫ 2016ᖺ9᭶16᪥.
❧▼೺୍㑻͆ගບ㉳୕㔜㡯㟁Ꮚࢆ⏝࠸ࡓືⓗ᰾೫ᴟಸࢆ㉸࠼ࡿ೫ᴟቑ኱͇᪥ᮏ≀⌮Ꮫ఍ ࢩ࣏ࣥࢪ࣒࢘ㅮ₇ ᖺ᫓Ꮨ኱఍
㇏୰᪥ᮏᖺ᭶᪥̾᭶᪥
ୖᆏ཭ὒ, ``ࢺࣜࣉࣞࢵࢺDNP ~᪂ࡓ࡞᰾೫ᴟἲࡢྍ⬟ᛶ~’’, ໭ᾏ㐨኱ᏛཎᏊ᰾⌮ㄽࢢ࣮ࣝࣉࢭ࣑ࢼ࣮, ᮐᖠ, ᪥ᮏ, 2016ᖺ10᭶26᪥ୖᆏ཭ὒࠊ❧▼೺୍㑻, ``ࢺࣜࣉࣞࢵࢺDNP ~㧗 ࣭ప☢ሙ࡛ࡢ᰾೫ᴟࡀᣅࡃୡ⏺~’’, ᒣᙧ኱Ꮫࢡ࢛࣮ࢡ᰾≀⌮Ꮫ◊✲ᐊࢭ࣑ࢼ࣮, ᒣᙧ, ᪥
ᮏ, 2017ᖺ1᭶12᪥బᕝᘯᖾ͆ཎᏊ᰾ࡢᑐ┦㛵͇ᖹᡂᖺᗘ➨ᅇඛᑟཎᏊຊ◊ࢥ࣒ࣟ࢟࢘ᮾி᪥ᮏᖺ᭶᪥
Posters Presentations[International Conference etc.]
M. Tsumura, ``Search for the rare gamma-decay mode in 12C’’, 14th International Symposium on Nuclei in the Cosmos (NIC-XIV), Niigata,Japan, 19—24 June 2016.
M. Murata, ``The measurement of 4He photodisintegration with MAIKo active target’’, 14th International Symposium on Nuclei in the Cosmos(NIC-XIV), Niigata, Japan, 19—24 June 2016.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Nuclear Spectroscopy Laboratory
1. Abstract
The research group has conducted nuclear-physics studies utilizing stopped/slowed-down radioactive-isotope (RI) beams mainly at
the RIBF facility. These studies are based on the techniquHRIQXFOHDUVSHFWURVFRS\VXFKDVȕ-ray-GHWHFWHG105Ȗ-PAD (Perturbed Angular'LVWULEXWLRQ  ODVHU DQG 0ऺVVEDXHU DPRQJ RWKHU PHWKRGV WKDW WDNHV DGYDQWDJH RI LQWULQVLF QXFOHDU SURSHUWLHV VXFK DV QXFOHDU spins,
electromagnetic moments, and decay modes. In particular, techniques and devices for the production of spin-controlled RI beams have beendeveloped and combined to the spectroscopic studies, which enable high-sensitivity measurements of spin precessions/resonances through achange in the angular distribution of radiations. Anomalous nuclear structures and properties of far unstable nuclei are investigated fromthus determined spin-related observables. The group also aims to apply such techniques to interdisciplinary fields such as fundamental
physics and materials science by exploiting nuclear probes..

2. Major Research Subjects(1) Nuclear spectroscopy with spin-oriented RI beams(2) R&D studies for laser spectroscopy of stopped/slowed-down RI beams(3) Application of RI probes(4) Fundamental physics: Study of symmetry

3. Summary of Research Activity(1) Nuclear spectroscopy with spin-oriented RI beams
Measurements of static electromagnetic nuclear moments over a substantial region of the nuclear chart have been conducted for
VWUXFWXUH VWXGLHV RQ WKH QXFOHL IDU IURP WKH ȕ-decay stability. Utilizing nuclear spin orientation phenomena of RIs created in the
projectile-fragmentation reaction, ground- and excited-state nuclear moments of nuclei far from the stability have been determined by
PHDQVRIWKHȕ-ray-GHWHFWHGQXFOHDUPDJQHWLFUHVRQDQFH ȕ-105 DQGWKHȖ-ray time differential perturbed angular distriEXWLRQ Ȗ-TDPAD)
methods. To extend these observations to extremely rare RIs, development of a new apparatus to produce highly spin-polarized RI beams
will be conducted by extending the atomic beam resonance method to fragmentation-based RI beams.
(2) R&D studies for laser spectroscopy of stopped/slowed-down RI beams
For the measurement of electromagnetic nuclear properties such as spin, isotope shift, and electromagnetic nuclear moments at RIBF,
we have been conducting R&D studies on nuclear laser spectroscopy. One is development of a new laser-spectroscopy system utilizing
superfluid helium (He II) as a stopping medium of energetic RI beams, where characteristic atomic properties of ions surrounded by liquid
helium enable us to perform unique nuclear laser spectroscopy. The other is a system for collinear laser spectroscopy for a large variety ofelements using slowed-down RI beams produced via projectile-fragmentation reaction at RIBF, which can be achieved only by a universal
low-energy RI-beam delivery system SLOWRI.
(3) Application of RI probes
The application of RI and heavy ion beams as a probe for condensed matter studies is also conducted by the group. The microscopic
material dynamics and properties have been investigated through the deduced internal local fields and the spin relaxation of RI probes
EDVHGRQYDULRXVVSHFWURVFRSLHVXWLOL]LQJ5,SUREHVVXFKDVWKHȕ-NMR/nuclear quadrupole resonance (NQR) methods, in-EHDP0ऺVVEDXHUVSHFWURVFRS\DQGWKHȖ-UD\WLPHGLIIHUHQWLDOSHUWXUEHGDQJXODUFRUUHODWLRQ Ȗ-TDPAC) spectroscopy.
(4) Fundamental physics: Study of symmetry
The nuclear spins of stable and unstable isotopes sometimes play important roles in fundamental physics research. New experimental
methods and devices have been developed for studies of the violation of time reversal symmetry (T-violation) using spin-polarized nuclei.
These experiments aim to detect the small frequency shift in the spin precession arising from new mechanisms beyond the Standard Model.

Members
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Research Consultant
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Special Postdoctoral Researcher
Tomoya SATO
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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

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List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
A. Kusoglu, G. Georgiev, C. Sotty, D. L. Balabanski, A. Goasduff, Y. Ishii, Y. Abe, K. Asahi, M. Bostan, R. Chevrier, M. Chikamori, J. M.
Daugas, T. Furukawa, H. Nishibata, Y. Ichikawa, Y. Ishibashi, R. Lozeva, H. Miyatake, D. Nagae, T. Nanao, M. Niikura, T. Niwa, S. Okada,A. Ozawa, Y. Saito, H. Shirai, H. Ueno, D. T. Yordanov, N. Yoshida, “Magnetic moment of the 13/2+ isomeric state in 69Cu: Spin alignment
in the one-nucleon removal reaction”, Phys. Rev. C 93, 054313 (2016).*
A. Takamine, M. Wada, K. Okada, Y. Ito, P. Schury, F. Arai, I. Katayama, K. Imamura, Y. Ichikawa, H. Ueno, H. Wollnik, H. A. Shuessler,
͆Towards high precision measurements of nuclear g-factors for the Be isotopes”, Nucl. Instr. Meth. Phys. Res. B 376, 307 (2016).*- 363 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIEST. Inoue, T. Furukawa, A. Yoshimi, T. Nanao, M. Chikamori, K. Suzuki, H. Hayashi, H. Miyatake, Y. Ichikawa, M. Tsuchiya, N. Hatakeyama,
S. Kagami, M. Uchida, H. Ueno, Y. Matsuo, T. Fukuyama, K. Asahi, “Frequency characteristics of nuclear spin oscillator with an artificial
feedback toward search for 129Xe atomic electric dipole moment”, Eur. Phys. J. D 70, 129 (2016).*
H. Heylen, M. De Rydt, G. Neyens, M. L. Bissell, L. Caceres, R. Chevrier, J. M. Daugas, Y. Ichikawa, Y. Ishibashi, O. Kamalou, T. J.
Mertzimekis, P. Morel, J. Papuga, A. Poves, M. M. Rajabali, C. St¨odel, J. C. Thomas, H. Ueno, Y. Utsuno, N. Yoshida, and A. Yoshimi,“High-precision quadrupole moment reveals significant intruder component in 33Al ground state”, Phys. Rev. C 94, 034312 (2016).*
H. Ishiyama, S. C. Jeong, Y. X. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, M. Oyaizu, I. Katayama, A. Osa, Y. Otokawa, M. Matsuda, K.
Nishio, H. Makii, T. Sato, N. Kuwata, J. Kawamura, A. Nakao, H. Ueno, Y. H. Kim, S. Kimura, and M. Mukai, “Direct measurement of
nanoscale lithium diffusion in solid battery materials using radioactive tracer of 8Li”, Nucl. Instr. Meth. Phys. Res. B 376, 307-310 (2016)
K. Asahi, T. Sato, and Y. Ichikawa, “EDMS of Closed-shell Atoms: An Example of Xe Atom”, Asian Journal of Physics 25, 1403-1412 (2016).*(Review)[Proceedings](Original Papers) *Subject to Peer Review
Oral Presentations[International Conference etc.]
H. Ueno, “Nuclear moment measurements using radioactive ion beams”, International Conference on Hyperfine Interactions and their
Applications (HYPERFINE2016), Leuven, Belgium, July 3–8, 2016.
A. Takamine, “Determination of the hyperfine anomaly for the one-neutron halo nucleus 11Be”, 2016 SSRI-PNS collaboration meeting, Wako,
Japan, September 2-3, 2016.
A. Takamine, “Collinear laser spectroscopy at SLOWRI”, 2016 SSRI-PNS collaboration meeting, Wako, Japan, September 2-3, 2016.
A. Takamine, “Measurements of nuclear moments by using RI atomic beam (RIAB)”, 2016 SSRI-PNS collaboration meeting, Wako, Japan,
September 2-3, 2016.
Y. Ichikawa, “Magnetic moment measurement using spin-aligned beam at RIBF”, RIBF Users Meeting, Wako, Japan, September 8-9, 2016.
Y. Ichikawa, A. Takamine, H. Nishibata, K. Imamura, T. Fujita, T. Sato, S. Momiyama, Y. Shimizu, D. S. Ahn, K. Asahi, H. Baba, D. L.
Balabanski, F. Boulay, J. M. Daugas, T. Egami, N. Fukuda, C. Funayama, T. Furukawa, G. Georgiev, A. Gladkov, N. Inabe, Y. Ishibashi, Y.
Kobayashi, S. Kojima, A. Kusoglu, T. Kawaguchi, T. Kawamura, I. Mukul, M. Niikura, T. Nishizaka, A. Odahara, Y. Ohtomo, D. Ralet, T.
Shimoda, G. S. Simpson, T. Sumikama, H. Suzuki, H. Takeda, L. C. Tao, Y. Togano, D. Tomonaga, H. Ueno, H. Yamazaki and X. F. Yang,
͆Magnetic moment of isomeric state of 75Cu measured with highly spin-aligned beam”, International Nuclear Physics Conference (INPC)
2016, Adelaide, Australia, September 11-16, 2016.
T. Sato, Y. Ichikawa, S. Kojima, C. Funayama, S. Tanaka, Y. Sakamoto, Y. Ohtomo, C. Hirao, M. Chikamori, E. Hikota, T. Furukawa, A.
Yoshimi, C. P. Bidinosti, T. Ino, H. Ueno, Y. Matsuo, T. Fukuyama, K. Asahi, “Development of 131Xe comagnetometry for Xe atomic EDM
search”, International Nuclear Physics Conference (INPC) 2016, Adelaide, Australia, September 11-16, 2016.
K. Imamura, T. Fujita, T. Egami, T. Nishizaka, D. Tominaga, T. Kawaguchi, A. Takamine, T. Furukawa, Y. Ichikawa, T. Wakui, H. Odashima,
H. Ueno, Y. Matsuo, “Development of laser spectroscopy technique using superfluid helium for the study of low-yield nuclei”, International
Nuclear Physics Conference (INPC) 2016, Adelaide, Australia, September 11-16, 2016.
H. Nishibata, “Various structures of the neutron-rich nucleus 31Mg investigated by beta-gamma spectroscopy of spin-polarized 31Na”, 22ndInternational Spin Symposium (SPIN2016), Illinois, USA, September 25-30, 2016.
H. Ueno, “Nuclear moments and their applications”, 2016 IBS Annual Meeting - IBS-RIKEN Conference on Recent Developments in RI
Physics, Daejeon, Korea, November 17-18, 2016.
H. Ueno, “Nuclear-moment measurements at RIBF utilizing spin-oriented RI beams”, First Tsukuba-CCS-RIKEN joint workshop on
microscopic theories of nuclear structure and dynamics, Wako & Tsukuba, Japan, December 12-16, 2016.
T. Sato, Y. Ichikawa, T. Inoue, A. Uchiyama, A. Gladkov, A. TAkamine, S. Kojima, C. Funayama, S. Tanaka, Y. Sakamoto, Y. Ohtomo, C.
Hirao, M. Chikamori, E. HIkota, T. Furukawa, A. Yoshimi, C. P. Bidinosti, T. Ino, H. Ueno, Y. Matsuo, T. Fukuyama, N. Yoshinaga, Y.
Sakemi, K. Asahi, “Search for Xe atomic EDM using nuclear spin masers of xenon-129 and -131”, 9th International Workshop on“Fundamental Physics Using Atoms” (FPUA 2017), Kyoto, Japan, January 9-10, 2017.
K. Imamura, T. Egami, T. Nishizaka, A. Takamine, D. TOminaga, T. Kawaguchi, W. Kobayashi, M. Sanjo, T. Furukawa, Y. Ichikawa, T. Sato,
H. Nishibata, A. Gladkov, L. C. Tao, T. Wakui, H. Odashima, H. Ueno, Y. Matsuo, “Development of laser spectroscopy technique of atoms
in superfluid helium for the study of low production yield nuclei”, 9th International Workshop on “Fundamental Physics Using Atoms” (FPUA
2017), Kyoto, Japan, January 9-10, 2017.
A. Takamine, “Laser Spectroscopy at the SLOWRI facility in RIKEN”, CSNSM/IPN seminar, Orsay, France, March 28, 2017.

[Domestic Conference]ୖ㔝⚽ᶞ, ࠕ᰾㟁☢࣮࣓ࣔࣥࢺ࡛᥈ࡿཎᏊ᰾ᵓ㐀◊✲ࠖ, ࠕศᏊࢩࢫࢸ࣒◊✲ࠖ➨㸳ᅇ᫓Ꮨ◊✲఍, ⇕ᾏ, 2016 ᖺ 5 ᭶ 13-16 ᪥໭ᮧᚨ㝯, ௒஭ఙ᫂, ୗᾆா, K. Wimmer, 㐨ṇ᪂୍㑻, ኱⏣᫴㍜, O. Beliuskina, P. Schrock, ᑠᯘᖿ, Ύᕝ⿱, ᒣཱྀຬ㈗, ቑᒸ⩧୍ᮁ, ୖ㔝⚽ᶞ, ⡿⏣೺୍㑻, ᕷᕝ㞝୍, ᑎす㧗, ΎỈ๎Ꮥ, Ᏹ㒔㔝✨, ࠕ㝧Ꮚඹ㬆ᩓ஘ࢆ⏝࠸ࡓ 35Si ࡢ᰾ᵓ㐀ࡢ◊✲ࠖ, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ, 2016 ᖺ 9 ᭶ 21-24 ᪥
Evgeniy Milman, Takashi Teranishi, Satoshi Sakaguchi, Sergey Chebotaryov, B, Tomohiro Uesaka, Kenichiro Tateishi, Yuichi Ichikawa,
Masaki Sasano, Wooyoung Kim, Reii Kaku, Yasuaki Norimatsu, Youhei Akiyama, Takahiro Fukuta, Daisuke Sakae, Nobuaki Imai,
Hidetoshi Yamaguchi, Seiya Hayakawa, Daid Miles Kahl, Yuji Sakaguchi, Keijiro Abe, Noritaka Kitamura, Tomoaki Kaneko, Kotaro
Yamada, Sanghoon Hwang, Dahee Kim, G, Alfredo Galindo-Uribarri, Elisa Romero-Romero, Didier Beaumel, “Search for low-lying
resonances in 10N structure via 9C + p resonant scattering”, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ, 2016 ᖺ 9 ᭶ 21-24 ᪥㔠ཎៅ஧, NP1406 RRC-32-02 collaborators, ࠕࣁ࢖ࣃ࣮᰾ࡢ᰾✀ྠᐃ࡟࠾ࡅࡿⲴ㟁⢏Ꮚ㆑ูἲࡢ㛤Ⓨࠖ, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑ
ᓮ, 2016 ᖺ 9 ᭶ 21-24 ᪥ᮧ஭ᮤዉ, ྜྷ⏣⣧ஓ, Myint Kyaw Soe, Aye Moh Moh Theint, 㔠ཎៅ஧, ኱ᶫṇᶞ, 㛗℩㞝୍, ௰⃝࿴㤿, NP1406-RRC32 Collaborators, ࠕཎ- 364 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)Ꮚ᰾஝ᯈ୰ࡢࣁ࢖ࣃ࣮᰾ྠᐃࡢࡓࡵࡢፉ⢏Ꮚࡢ㆑ู(ゅᗘ౫Ꮡᛶ)ࠖ, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ, 2016 ᖺ 9 ᭶ 21-24 ᪥㛗℩㞝୍, 㔠ཎៅ஧, ᮧ஭ᮤዉ, ௰⃝࿴㤿, ௚⌮◊ NP1406-RRC32 Collaborators, ࠕཎᏊ᰾஝ᯈ୰㣕㊧ࡢ᰾✀ྠᐃ(≉࡟ 6He ࡟ࡘ࠸࡚)ࠖ, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ, 2016 ᖺ 9 ᭶ 21-24 ᪥௒ᮧ្, ⸨⏣᭸⨾㸪Ụୖ㨥㸪すᆏ኱ᚿ㸪㧗ᓠឡᏊ㸪ᐩỌ኱ᶞ㸪ᕝཱྀ㈗ྐ㸪ᑠᯘ⯟㸪୕ᲄ┿㸪ྂᕝṊ㸪ᕷᕝ㞝୍㸪బ⸨ᬛဢ㸪す⏿Ὧᕼ㸪A. Gladkov㸪
L. C. Tao㸪ᾛ஭ᓫ㸪ᑠ⏣ᓥோྖ㸪ୖ㔝⚽ᶞ㸪ᯇᑿ⏤㈡฼, ࠕ㉸ὶື࣒࣊ࣜ࢘⎔ቃࢆ⏝࠸ࡓཎᏊศග࡜᰾ᵓ㐀◊✲ᡭἲ(OROCHI)ࡢ㛤Ⓨࠖ, ➨9 ᅇ೵Ṇ࣭ప㏿୙Ᏻᐃ᰾ࣅ࣮࣒ࢆ⏝࠸ࡓ᰾ศග◊✲, ᮾᾏ, 2017 ᖺ 3 ᭶ 5-6 ᪥㧗ᓠឡᏊ, ࠕ࢖ࣥࣇࣛ࢖ࢺ᰾཯ᛂ⏕ᡂ RI ࢆᑐ㇟࡜ࡋࡓࢥࣜࢽ࢔࣮ࣞࢨ࣮ศග (Collinear laser spectroscopy for the nuclides provided from anin-flight RI beam separator)ࠖ, ➨ 9 ᅇ೵Ṇ࣭ప㏿୙Ᏻᐃ᰾ࣅ࣮࣒ࢆ⏝࠸ࡓ᰾ศග◊✲, ᮾᾏ, 2017 ᖺ 3 ᭶ 5-6 ᪥Ụୖ㨥, ௒ᮧ្ࠊ㧗ᓠឡᏊࠊᑠᯘ⯟ࠊ⸨⏣᭸⨾ࠊᐩỌ኱ᶞࠊ୕ᲄ┿ࠊ୰ᮧ♸ኴ㑻ࠊᾛ஭ᓫᚿࠊྂᕝṊࠊୖ㔝⚽ᶞࠊᯇᑿ⏤㈡฼, ࠕ㉸ὶື࣒࣊ࣜ࢘୰࡟ᡴࡕ㎸ࡲࢀࡓప཰㔞᰾ཎᏊࡢ㉸ᚤ⣽ᵓ㐀㛫㝸 ᐃ࡟ྥࡅࡓගᏛࢡࣛ࢖࢜ࢫࢱࢵࢺࡢ㛤Ⓨࠖ, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱
㜰, 2017 ᖺ 3 ᭶ 17-20 ᪥బ⸨ᬛဢ, ᕷᕝ㞝୍, ஭ୖኊᚿ, ෆᒣឡᏊ, 㧗ᓠឡᏊ, ᑠᓥಟ୍㑻, ⯚ᒣᬛḷᏊ, ⏣୰ಇஓ, ᆏᮏ㞝, ኱཭♸୍, ᖹᑿ༓ె, ㏆᳃ṇᩄ, ᙪ⏣⤮㔛, ྂᕝṊ, ྜྷぢᙲὒ, C.P. Bidinosti, ⊦㔝㝯, ୖ㔝⚽ᶞ, ᯇᑿ⏤㈡฼, ⚟ᒣṊᚿ, ྜྷỌᑦᏕ, 㓇ぢὈᐶ, ᪫⪔୍㑻, ࠕ⬟ືᖐ㑏ᆺ᰾ࢫࣆ࣓ࣥ
࣮ࢨ࣮࡟࠾ࡅࡿᖐ㑏☢ሙ༳ຍ᪉ᘧ࡜࿘ἼᩘᏳᐃᛶࠖ, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰, 2017 ᖺ 3 ᭶ 17-20 ᪥ఀ⸨⏤ኴ, ࿴⏣㐨἞, P. Schury, ຍ἞኱ဢ, ᳃ᮏᖾྖ, ⩚ሙᏹග, I. Murray, M. Rosenbusch, ᮌᮧ๰኱, 㧗ᓠឡᏊ, ᐑṊᏱஓ, ᒣᮌࡉࡸ࠿, ᪂஭㑳ஓ, H. Wollnik, ࠕMRTOF ㉁㔞ศᯒჾ࡟ࡼࡿඵ㔜ᴟኚᙧ᰾ 223,224Th ࡢ⢭ᐦཎᏊ㉁㔞 ᐃࠖ, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰, 2017
ᖺ 3 ᭶ 17-20 ᪥
Posters Presentations[International Conference etc.]
Y. Ichikawa, A. Takamine, H. Nishibata, K. Imamura, T. Fujita, T. Sato, S. Momiyama, Y. Shimizu, D. S. Ahn, K. Asahi, H. Baba, D. L.
Balabanski, F. Boulay, J. M. Daugas, T. Egami, N. Fukuda, C. Funayama, T. Furukawa, G. Georgiev, A. Gladkov, N. Inabe, Y. Ishibashi, Y.
Kobayashi, S. Kojima, A. Kusoglu, T. Kawaguchi, T. Kawamura, I. Mukul, M. Niikura, T. Nishizaka, A. Odahara, Y. Ohtomo, D. Ralet, T.
Shimoda, G. S. Simpson, T. Sumikama, H. Suzuki, H. Takeda, L. C. Tao, Y. Togano, D. Tomonaga, H. Ueno, H. Yamazaki and X. F. Yang,
͆Magnetic moment of 75mCu and collectivity around 78Ni”, 14th International Symposium on Nuclei in the Cosmos XIV, Niigata, Japan,
June 19-24, 2016.
A. Takamine, M. Wada, K. Okada, Y. Ito, P. Schury, I. Katayama, K. Imamura, Y. Ichikawa, H. Ueno, H. Wollnik, H. A. Schuessler,
͆Precision laser spectroscopy for laser-cooled radioactive beryllium isotopes” International Nuclear Physics Conference (INPC) 2016,
Adelaide, Australia, September 11-16, 2016
[Domestic Conference]௒ᮧ្, ᪩ᆏ⨾ᕼ, ⸨⏣᭸⨾, ᑠᯘᚭ, ྂᕝṊ, ୖ㔝⚽ᶞ, ᯇᑿ⏤㈡฼, ࠕࣃࣝࢫ Ti:Sa ࣮ࣞࢨ࣮࡟ࡼࡿ㉸ὶື࣒࣊ࣜ࢘⎔ቃ୰ཎᏊࡢࢫࣆࣥ೫
ᴟ⏕ᡂࠖ, ཎᏊ࣭ศᏊ࣭ග㸦AMO㸧⛉Ꮫウㄽ఍, ࿴ග, 2016 ᖺ 6 ᭶ 3-4 ᪥.
Ụୖ㨥, ௒ᮧ្, ⸨⏣᭸⨾, すᆏኴᚿ, ᐩỌ኱ᶞ, ᕝཱྀ㧗ྐ, 㧗ᓠឡᏊ, ྂᕝṊ, ୖ㔝⚽ᶞ, ᯇᑿ⏤㈡฼, ࠕప཰㔞ཎᏊ᰾ࡢ᰾ᵓ㐀◊✲࡟ྥࡅࡓ㉸ὶື࣒࣊ࣜ࢘⎔ቃ࡟࠾ࡅࡿ࣮ࣞࢨ࣮᰾ศගἲࡢ㛤Ⓨࠖ, ཎᏊ࣭ศᏊ࣭ග㸦AMO㸧⛉Ꮫウㄽ఍, ࿴ග, 2016 ᖺ 6 ᭶ 3-4 ᪥.
ᐩỌ኱ᶞ, ௒ᮧ្ࠊ⸨⏣᭸⨾ࠊ㧗ᓠឡᏊࠊᑠᯘᚭࠊୖ㔝⚽ᶞࠊᯇᑿ⏤㈡฼, ࠕ㉸ὶື࣒࣊ࣜ࢘୰࣮ࣞࢨ࣮࢔ࣈ࣮ࣞࢩࣙࣥἲ࡟ࡼࡿ Ba+࢖࢜ࣥࡢⓎ⏕࡜⺯ගほ ࠖ, ࢖࢜ࣥࣅ࣮࣒ᕤᏛ◊✲ᡤࢩ࣏ࣥࢪ࣒࢘, ᮾி, 2016 ᖺ 12 ᭶ 7 ᪥.
ᑠᯘ⯟, ௒ᮧ្, Ụୖ㨥, すᆏኴᚿ, ୕ᲄ┿, ⸨⏣᭸⨾, ᐩỌ኱ᶞ, ୰ᮧ♸ኴ㑻, 㧗ᓠឡᏊ, ᾛ஭ᓫᚿ, ྂᕝṊ, ୖ㔝⚽ᶞ, ᯇᑿ⏤㈡฼, ࠕప཰㔞ཎᏊ᰾ࡢ᰾ᵓ㐀◊✲࡟ྥࡅࡓ㉸ὶື࣒࣊ࣜ࢘୰ཎᏊࡢ࣮ࣞࢨ࣮ㄏ㉳⺯ග᳨ฟ⣔ࡢ㧗ᗘ໬ࠖ, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰, 2017
ᖺ 3 ᭶ 17-20 ᪥.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research DivisionHigh Energy Astrophysics Laboratory
1. Abstract
Immediately after the Big Bang, the beginning of our universe, only hydrogen and helium existed. However, nuclear fusion in theinterior of stars and the explosion of supernovae in the universe over the course of 13.8 billion years led to the evolution of a world
brimming with the many different elements we have today. By using man-made satellites to observe X-rays and gamma-rays emitted fromcelestial objects, we are observing the synthesis of the elements at their actual source. Our goal is to comprehensively elucidate thescenarios for the formation of the elements in the universe, together with our research on sub-atomic physics through the use of anaccelerator.

2. Major Research Subjects
(1)
(2)
(3)
(4)

Connect missing links of nucleosynthesis in our universe
Reveal the particle acceleration mechanism in astronomical objects, planets and inter-planetary space
Discover new physics in extremely strong magnetic and gravitational environment
Research and development of innovative X-ray and gamma-ray detectors

3. Summary of Research Activity
High Energy Astrophysics Laboratory started in April 2010. The goal of our research is to reveal the mechanism of nucleosynthesis
and the evolution of elements in our universe, to study the particle acceleration mechanisms by shockwaves or electrical potential, and toobserve/discover exotic physical phenomena in extremely strong magnetic and/or gravitational fields. We have observed supernova
remnants, strongly magnetized neutron stars, pulsars, black holes, galaxies, and planets of the solar system with UV, X-ray, and gamma-ray
astronomical satellites and/or ground-based telescopes. In FY2016, we have following achievements.
(1) Ultra high-resolution spectroscopy
The microcalorimeter, Soft X-ray Spectrometer (SXS), onboard the Hitomi (ASTRO-H) X-ray satellite was launched in February 2016.
Our laboratory contributed to the mission, in particular to the development of the SXS. The SXS consisted of a semiconductor sensor
cooled down around 50 mK, and measuring X-ray energy with a very sensitive thermometer. Soon after the Hitomi launch, SXS achieved
the operation temperature and observed the Perseus galaxy cluster and some other celestial objects for verifying the detector system.
Although the Hitomi satellite was lost in March 2016 due to a tragic accident, the data obtained in the verification phase was analyzed andpublished to Nature. This analysis demonstrated the excellent capability of the microcalorimeter in spectroscopy: A recovery mission isplanned for the launch in 2021.
(2) X-ray polarimeter development
X-ray polarimeter is one of our key devices developing for more than 12 years. We have evaluated the basic performance of the X-ray
polarimeter for Relativistic Astrophysical X-ray Sources (PRAXyS) small explorer. PRAXyS is the NASA's mission designed to probe thespace-time geometry in strong gravitational field and strong magnetic field of high-energy astronomical objects in the universe, such as
black holes and neutron stars, via X-ray polarimetry in the energy band of 2-10 keV. An engineering model of the polarimeter was tested at
the Brookhaven National Laboratory and NASA's Goddard Space Flight Center. We measured its modulation factor, the most important
indicator of polarimetry, and successfully verified that the measured values were consistent with the ones obtained with simulations, which
well meets the mission requirement.
(3) Observations of Jupiter’s aurora
We made an international observing campaign for Jupiter’s space environment by using the Hisaki satellite, Hubble Space Telescope(HST), and Juno explorer in mid-2016. Continuous monitoring of Jupiter’s aurora with Hisaki indicated an explosive auroral brightening
within a few hours, of which structure was found expanding in longitude and latitude in the HST high-resolution imaging. During theauroral explosion, Juno detected a forward shock in the solar wind plasma propagating to Jupiter. We interpret the observations as a releaseof electromagnetic energy stored at <100 Jovian radii from Jupiter, followed by Jupiter-ward transport of the released energy as the hot
plasma population, which finally excites the auroral explorsion. This rapid energy release and transport could universally take place at othermagnetized rotating bodies, e.g., exoplanets, neutron stars, and white dwarfs.
(4) Observations of neutron stars
We have analyzed the X-ray data of the Neutron Star Low-Mass X-ray Binary (NS-LMXB) Aquila X-1 obtained by the Japanese
X-ray satellite Suzaku. The spectrum was represented by an optically thick disk emission (multi-color blackbody) and a Comptonizedemission by a corona around the neutron star as shown in the previous studies, but we discovered small hump structure around 30 keV forthe spectrum obtained in the hard state, in which the Comptonized emission is dominant. The structure was well represented by a single
Gaussian model or a recombination edge emission mode. One of the possible interpretations of the hump is the florescence line or K-edge
recombination of the heavy element that is produced in a rapid proton capture process (rp-process) in Type-I X-ray bursts or superbursts
occurred on the neutron star surface of Aql X-1.
(5) Observations of supernova remnants
We have performed a systematic X-ray study of nine evolved supernova remnants in the Magellanic Clouds, DEM L238, DEM L249,
0534䌦69.9, 0548䌦70.4, B0532䌦71.0, B0532䌦67.5, 0103䌦72.6, 0049䌦73.6, and 0104䌦72.3, using archival data of the Suzaku satellite.
Although Suzaku does not spatially resolve the SN ejecta from the swept-up ISM due to the limited angular resolution, its excellent energy
resolution has enabled clear separation of emission lines in the soft X-ray band. The Fe/Ne mass ratios clearly divide the observed SNRs
into the Type Ia and core-collapse groups, confirming some previous typing made by Chandra observations that had utilized its extremely- 366 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)high angular resolution. This demonstrates that spatially integrated X-ray spectra of old SNRs can also be used to discriminate theirprogenitor type.
(6) Development of a new analysis method for gravitational weak lensing㻌 㻌 㻌 We developed a new weak gravitational lensing shear analysis method which can correct pixel noise effect. The gravitational lensing
analysis is a great tool to direct measurement of mass information, and it can be applied to constrain the cosmological parameters bymeasuring cosmic shear, it is distortion by the large scale structure. Because the mass concentration of the structure is very weak, so thelensing effect is also very weak, so precise shear analysis method is needed for stronger constraining. The pixel noise effect is shear
measurement error from random counts on galaxy images from Poisson noises of sky count. We studied pixel noise correction method withan analytical approach, and the new method has 10 times high precision about pixel noise effect.

Members
Associate Chief Scientist (Lab. Head)
Toru TAMAGAWA
Contract Researchers
Yuki OKURA

Asami HAYATO

Special Postdoctoral Researchers
Kumi ISHIKAWA
Hirofumi NODA
Takayuki YUASA

Tomoki KIMURA
Toshio NAKANO

Part-time Workers
Megu KUBOTA
Kazuki NISHIDA
Naoto MURATA

Sonoe ODA
Yuanhui ZHOU
Tatsuya YOSHIDA

Visiting Researcher
Wataru IWAKIRI (JSPS Fellow)
Visiting Scientists
Yukikatsu TERADA (Saitama Univ.)
Yujin NAKAGAWA (JAXA)
Masaki WAKABAYASHI (Jakulin Commercial Company LC)
Aya BAMBA (Aoyama Gakuin Univ.)
Naohisa INADA (National Institute of Tech., Nara College)
Rohta TAKAHASHI (Tomakomai Nat'l College of Tech.)
Toru MISAWA (Shinshu Univ.)
Hiroya YAMAGUCHI (Harvard Univ.)
Satoru KATSUDA (JAXA)
Shin'ya YAMADA (Tokyo Met. Univ.)

Takao KITAGUCHI (Hiroshima Univ.)
Teruaki ENOTO (Kyoto Univ.)
Hirofumi NODA (Tohoku Univ.)
Yuzuru Tawara (Nagoya Univ.)
Ikuyuki Mitsuishi (Nagoya Univ.)
Harufumi TSUCHIYA (JAEA)
Teruaki ENOTO (Kyoto Univ.)
Yuzuru TAWARA (Nagoya Univ.)

Student Trainees
Yoko TAKEUCHI (Tokyo Univ. of Sci.)
Megu KUBOTA (Tokyo Univ. of Sci.)
Kazuki NISHIDA (Tokyo Univ. of Sci.)
Sonoe ODA (Tokyo Univ. of Sci.)

Ryouta MICHIGAMI (Nagasaki Institute of Applied Science)
Naoto MURATA (Tokyo Univ. of Sci.)
Yuanhui ZHOU (Tokyo Univ. of Sci.)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
The Hitomi collaboration; "The quiescent intracluster medium in the core of the Perseus cluster", Nature, 535, 117-121 (2016).*
The Hitomi collaboration; "Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster", The Astrophysical Journal Letters, 837, L15,(2017).*
Takeuchi, Yoko; Yamaguchi, Hiroya; Tamagawa, Toru; "A systematic study of evolved supernova remnants in the large and small Magellanic
Clouds with Suzaku", Publications of the Astronomical Society of Japan, 68, S9 (2016).*
Iwakiri, W. B.; Black, J. K.; Cole, R.; Enoto, T.; Hayato, A.; Hill, J. E.; Jahoda, K.; Kaaret, P.; Kitaguchi, T.; Kubota, M.; Marlowe, H.; McCurdy,
R.; Takeuchi, Y.; Tamagawa, T.: "Performance of the PRAXyS X-ray polarimeter", Nuclear Inst. and Methods in Physics Research, A, 838,
89 (2016). *Terada, Y.; Maeda, K.; Fukazawa, Y.; Bamba, A.; Ueda, Y.; Katsuda, S.; Enoto, T.; Takahashi, T.; Tamagawa, T.; Röpke, F. K.; Summa, A.;
Diehl, R.; "Measurements of the Soft Gamma-Ray Emission from SN2014J with Suzaku", The Astrophysical Journal, 823, 43, (2016).*
Okura, Yuki; Futamase, Toshifumi: "The Systematic Error Test for PSF Correction inWeak Gravitational Lensing Shear Measurement By the
ERA Method By Idealizing PSF" The Astrophysical Journal, 827, 138 (2016). *- 367 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESOkura, Yuki; Petri, Andrea; May, Morgan; Plazas, Andrs A.; Tamagawa, Toru: "Consequences of CCD Imperfections for Cosmology
Determined by Weak Lensing Surveys: From Laboratory Measurements to Cosmological Parameter Bias" The Astrophysical Journal, 825,
61 (2016). *Furusawa, Hisanori; Kashikawa, Nobunari; Kobayashi, Masakazu A. R.; Dunlop, James S.; Shimasaku, Kazuhiro; Takata, Tadafumi;
Sekiguchi, Kazuhiro; Naito, Yoshiaki; Furusawa, Junko; Ouchi, Masami; Nakata, Fumiaki; Yasuda, Naoki; Okura, Yuki; Taniguchi,
Yoshiaki; Yamada, Toru; Kajisawa, Masaru; Fynbo, Johan P. U.; Le Fvre, Olivier: "A New ConVWUDLQWRQWKH/\Į)UDFWLRQRI899HU\%ULJht
Galaxies at Redshift 7" The Astrophysical Journal, 822, 46 (2016). *Tao, Chihiro; Kimura, Tomoki; Badman, Sarah V; Murakami, Go; Yoshioka, Kazuo; Tsuchiya, Fuminori; Andre, Nicolas; Yoshikawa, Ichiro;
Yamazaki, Atsushi; Shiota, Daikou; "Variation of Jupiter's aurora observed by Hisaki/EXCEED: 1. Observed characteristics of the auroralelectron energies compared with observations performed using HST/STIS", Journal of Geophysical Research: Space Physics, 121,4041-4054, (2016). *Kita, Hajime; Kimura, Tomoki; Tao, Chihiro; Tsuchiya, Fuminori; Misawa, Hiroaki; Sakanoi, Takeshi; Kasaba, Yasumasa; Murakami, Go;
Yoshioka, Kazuo; Yamazaki, Atsushi; "Characteristics of solar wind control on Jovian UV auroral activity deciphered by long-term Hisaki
EXCEED observations: Evidence of preconditioning of the magnetosphere?", Geophysical Research Letters, 43, 6790-6798, (2016). *Gray, RL; Badman, Sarah Victoria; Bonfond, Bertrand; Kimura, Tomoki; Misawa, H; Nichols, JD; Vogt, MF; Ray, LC; "Auroral evidence ofradial transport at Jupiter during January 2014", Journal of Geophysical Research: Space Physics, 121, 9972-9984, (2016). *Yoshikawa, Ichiro; Yoshioka, Kazuo; Murakami, Go; Suzuki, Fumiharu; Hikida, Reina; Yamazaki, Atsushi; Kimura, Tomoki; Tsuchiya,
Fuminori; Kagitani, Masato; Sakanoi, Takeshi; "Properties of hot electrons in the Jovian inner magnetosphere deduced from extended
observations of the Io Plasma Torus", Geophysical Research Letters, 43, 11,552{11,557, (2016). *Yoshioka, K; Tsuchiya, F; Kimura, T; Kagitani, M; Murakami, G; Yamazaki, A; Kuwabara, M; Suzuki, F; Hikida, R; Yoshikawa, I; "Radial
variation of sulfur and oxygen ions in the Io plasma torus as deduced from remote observations by Hisaki", Journal of GeophysicalResearch: Space Physics, 122, 2999-3012, (2017). *Kuwabara, Masaki; Yoshioka, Kazuo; Murakami, Go; Tsuchiya, Fuminori; Kimura, Tomoki; Yamazaki, Atsushi; Yoshikawa, Ichiro; "Thegeocoronal responses to the geomagnetic disturbances", Journal of Geophysical Research: Space Physics, 122, 1269-1276, (2017). *➟⩚ᗣṇ; ୕⃝ᾈ᫛; ᅵᒇྐ⣖; ➟ཎ⚞ஓ; ஭⏫ᬛᙪ; ᮌᮧᬛᶞ; ຍ⸨㞝ே; ⇃ᮏ⠜ᚿ; ᑠᔱᾈႹ; ඵᮌ㇂⪽; ᑿᓮග⣖; ▼ᆏᆂ࿃; ᇐ༓ᑜ;୕ዲ⏤⣧; 㜿㒊⌶⨾; ㅖᒸ೔Ꮚ, ࠕࡳࢇ࡞࡛ࡩࡓࡓࡧᮌᫍ࡬, ࡑࡋ࡚ị⾨ᫍ࡬ࡑࡢ 4 㟁Ἴ࣭ࣉࣛࢬ࣐Ἴືほ ჾ RPWI ࡢ㣕⩧࡬ࠖ, ᪥ᮏᝨᫍ⛉Ꮫ఍ㄅ㐟ᫍே, 25, 96-107, (2016). *Serino, Motoko; Iwakiri, Wataru; Tamagawa, Toru; Sakamoto, Takanori; Nakahira, Satoshi; Matsuoka, Masaru; Yamaoka, Kazutaka; Negoro,
Hitoshi; "MAXI observations of long X-ray bursts", Publications of the Astronomical Society of Japan, 68, 95 (2016). *Nakano, Toshio; Murakami, Hiroaki; Furuta, Yoshihiro; Enoto, Teruaki; Masuyama, Miyu; Shigeyama, Toshikazu; Makishima, Kazuo; "Studyof the progenitor of the magnetar 1E 2259+586 through Suzaku observations of the associated supernova remnant CTB 109", Publicationsof the Astronomical Society of Japan, 69, 40 (2017).*
Makishima, Kazuo; Enoto, Teruaki; Murakami, Hiroaki; Furuta, Yoshihiro; Nakano, Toshio; Sasano, Makoto; Nakazawa, Kazuhiro; "Evidence for a 36 ks phase modulation in the hard X-ray pulses from the magnetar 1E 1547.0-5408", Publications of the Astronomical
Society of Japan, 68, S12 (2016).*[Proceedings](Original Papers) *Subject to Peer Review
Fujimoto, Ryuichi; Takei, Yoh; Mitsuda, Kazuhisa; Yamasaki, Noriko Y.; Tsujimoto, Masahiro; Koyama, Shu; Ishikawa, Kumi; Sugita,
Hiroyuki; Sato, Yoichi; Shinozaki, Keisuke; Okamoto, Atsushi; Kitamoto, Shunji; Hoshino, Akio; Sato, Kosuke; Ezoe, Yuichiro; Ishisaki,
Yoshitaka; Yamada, Shinya; Seta, Hiromi; Ohashi, Takaya; Tamagawa, Toru; Noda, Hirofumi; Sawada, Makoto; Tashiro, Makoto; Yatsu,
Yoichi; Mitsuishi, Ikuyuki; Kanao, Kenichi; Yoshida, Seiji; Miyaoka, Mikio; Tsunematsu, Shoji; Otsuka, Kiyomi; Narasaki, Katsuhiro; DiPirro,
Michael J.; Shirron, Peter J.; Sneiderman, Gary A.; Kilbourne, Caroline A.; Porter, F. Scott; Chiao, Meng P.; Eckart, Megan E.; Kelley,
Richard L.; "Performance of the helium dewar and cryocoolers of ASTRO-H SXS", Proceedings of the SPIE, 9905, 99053S (2016).
Hill, J. E.; Black, J. K.; Jahoda, K.; Tamagawa, T.; Iwakiri, W.; Kitaguchi, T.; Kubota, M.; Kaaret, P.; McCurdy, R.; Miles, D. M.; Okajima, T.;
Soong, Y.; Olsen, L.; Sparr, L.; Mosely, S. J.; Nolan, D.; "The x-ray polarimeter instrument on board the Polarimeter for Relativistic
Astrophysical X-ray Sources (PRAXyS) mission", Proceedings of the SPIE, 9905, 99051B (2016).
Jahoda, Keith; Kallman, Timothy R.; Kouveliotou, Chryssa; Angelini, Lorella; Black, J. Kevin; Hill, Joanne E.; Jaeger, Theodore; Kaaret, PhilipE.; Markwardt, Craig B.; Okajima, Takashi; Petre, Robert; Schnittman, Jeremy; Soong, Yang; Strohmayer, Tod E.; Tamagawa, Toru;
Tawara, Yuzuru; "The Polarimeter for Relativistic Astrophysical X-ray Sources", Proceedings of the SPIE, 9905, 990516 (2016).
Tsujimoto, Masahiro; Mitsuda, Kazuhisa; Kelley, Richard L.; den Herder, Jan-Willem A.; Akamatsu, Hiroki; Bialas, Thomas G.; Boyce, Kevin
R.; Brown, Gregory V.; Chiao, Meng P.; Costantini, Elisa; de Vries, Cor P.; DiPirro, Michael J.; Eckart, Megan E.; Ezoe, Yuichiro; Fujimoto,
Ryuichi; Haas, Daniel; Hoshino, Akio; Ishikawa, Kumi; Ishisaki, Yoshitaka; Iyomoto, Naoko; Kilbourne, Caroline A.; Kitamoto, Shunji;
Koyama, Shu; Leutenegger, Maurice A.; McCammon, Dan; Mitsuishi, Ikuyuki; Murakami, Hiroshi; Murakami, Masahide; Noda, Hirofumi;
Ogawa, Mina; Ota, Naomi; Paltani, Stéphane; Porter, Frederick S.; Sato, Kosuke; Sato, Yoichi; Sawada, Makoto; Seta, Hiromi; Shinozaki,
Keisuke; Shirron, Peter J.; Sneiderman, Gary A.; Sugita, Hiroyuki; Szymkowiak, Andrew E.; Takei, Yoh; Tamagawa, Toru; Tashiro, Makoto
S.; Terada, Yukikatsu; Yamada, Shinya; Yamasaki, Noriko Y.; Yatsu, Yoichi; "In-orbit operation of the ASTRO-H SXS", Proceedings of the
SPIE, 9905, 99050Y (2016).
Kelley, Richard L.; Akamatsu, Hiroki; Azzarello, Phillipp; Bialas, Tom; Boyce, Kevin R.; Brown, Gregory V.; Canavan, Edgar; Chiao, Meng P.;
Costantini, Elisa; DiPirro, Michael J.; Eckart, Megan E.; Ezoe, Yuichiro; Fujimoto, Ryuichi; Haas, Daniel; den Herder, Jan-Willem; Hoshino,Akio; Ishikawa, Kumi; Ishisaki, Yoshitaka; Iyomoto, Naoko; Kilbourne, Caroline A.; Kimball, Mark O.; Kitamoto, Shunji; Konami, Saori;
Koyama, Shu; Leutenegger, Maurice A.; McCammon, Dan; Mitsuda, Kazuhisa; Mitsuishi, Ikuyuki; Moseley, Harvey; Murakami, Hiroshi;
Murakami, Masahide; Noda, Hirofumi; Ogawa, Mina; Ohashi, Takaya; Okamoto, Atsushi; Ota, Naomi; Paltani, Stéphane; Porter, F. S.;
Sakai, Kazuhiro; Sato, Kosuke; Sato, Yohichi; Sawada, Makoto; Seta, Hiromi; Shinozaki, Keisuke; Shirron, Peter J.; Sneiderman, Gary A.;
Sugita, Hiroyuki; Szymkowiak, Andrew E.; Takei, Yoh; Tamagawa, Toru; Tashiro, Makoto; Terada, Yukikatsu; Tsujimoto, Masahiro; deVries, Cor P.; Yamada, Shinya; Yamasaki, Noriko Y.; Yatsu, Yoichi; "The Astro-H high resolution soft x-ray spectrometer", Proceedings of
the SPIE, 9905, 99050V (2016).
The Hitomi Collaboration, "The ASTRO-H (Hitomi) x-ray astronomy satellite", Proceedings of the SPIE, 9905, 99050U (2016).

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Watanabe, Shin; Tajima, Hiroyasu; Fukazawa, Yasushi; Blandford, Roger; Enoto, Teruaki; Goldwurm, Andrea; Hagino, Kouichi; Hayashi,
Katsuhiro; Ichinohe, Yuto; Kataoka, Jun; Katsuta, Junichiro; Kitaguchi, Takao; Kokubun, Motohide; Laurent, Philippe; Lebrun, François;Limousin, Olivier; Madejski, Grzegorz M.; Makishima, Kazuo; Mizuno, Tsunefumi; Mori, Kunishiro; Nakamori, Takeshi; Nakano, Toshio;
Nakazawa, Kazuhiro; Noda, Hirofumu; Odaka, Hirokazu; Ohno, Masanori; Ohta, Masayuki; Saito, Shinya; Sato, Goro; Sato, Rie; Takeda,
Shin'ichiro; Takahashi, Hiromitsu; Takahashi, Tadayuki; Tanaka, Takaaki; Tanaka, Yasuyuki; Terada, Yukikatsu; Uchiyama, Hideki;
Uchiyama, Yasunobu; Yamaoka, Kazutaka; Yatsu, Yoichi; Yonetoku, Daisuke; Yuasa, Takayuki; " The soft gamma-ray detector (SGD)
onboard ASTRO-H", Proceedings of the SPIE, 9905, 990513 (2016).
Nakazawa, Kazuhiro; Sato, Goro; Kokubun, Motohide; Enoto, Teruaki; Fukazawa, Yasushi; Hagino, Kouichi; Harayama, Atsushi; Hayashi,
Katsuhiro; Kataoka, Jun; Katsuta, Junichiro; Laurent, Philippe; Lebrun, François; Limousin, Olivier; Makishima, Kazuo; Mizuno, Tsunefumi;Mori, Kunishiro; Nakamori, Takeshi; Nakano, Toshio; Noda, Hirofumi; Odaka, Hirokazu; Ohno, Masanori; Ohta, Masayuki; Saito, Shinya;
Sato, Rie; Tajima, Hiroyasu; Takahashi, Hiromitsu; Takahashi, Tadayuki; Takeda, Shin'ichiro; Terada, Yukikatsu; Uchiyama, Hideki;
Uchiyama, Yasunobu; Watanabe, Shin; Yamaoka, Kazutaka; Yatsu, Yoichi; Yuasa, Takayuki; " The hard x-ray imager (HXI) onboard
ASTRO-H", Proceedings of the SPIE, 9905, 990511 (2016).
Oral Presentations[International Conference etc.]
Tomoki Kimura, Kazuo Yoshioka, Fuminori Tsuchiya, Yasutaka Hiraki, Chihiro Tao, Go Murakami, Atsushi Yamazaki, Masaki Fujimoto, Sarah
Victoria Badman, Peter A Delamere, Fran Bagenal, "Response of tail reconnection and energetic event to plasma mass loading monitored
by Hisaki", NASA Participating Scientist Program meeting for Hisaki/EXCEED, Boulder, USA, January (2017).
Tomoki Kimura, Go Murakami, Atsushi Yamazaki, Fuminori Tsuchiya, Kazuo Yoshioka, Chihiro Tao, Hajime Kita, Sarah V Badman, Masaki
Fujimoto, Hisaki Science Team, "Continuous Monitoring of Jupiter's Aurora and Io Plasma Torus with the Hisaki Satellite: Recent Resultsand Future Coordination with JUNO" 8th International Workshop on Planetary, Solar and Heliospheric Radio Emissions (PRE VIII), Graz,
Austria, October (2017).
Tomoki KIMURA, "Substorm like events seen as auroras and their responses to the plasma mass loading from Io", The influence of Io on
Jupiter's Magnetosphere, International Space Science Institute Meeting, Zurich, Switzerland, September (2016).
Tomoki Kimura, Kazuo Yoshioka, Go Murakami, Atsushi Yamazaki, Fuminori Tsuchiya, Chihiro Tao, Masaki Fujimoto, "Hisaki Science team,
Synergetic Multi-Wavelength Observation of Jupiter's Magnetosphere Driven by Hisaki: Recent Results and Plans for JUNO Mission",
Japan Geoscience Union Meeting 2016, Makuhari, Japan, May (2016).
Yuki Okura; "Ellipticity of Re-smeared Articial image (ERA) Method", HSC collaboration meeting 2016 August, IPMU, Japan, August (2016).
Yuki Okura; "Current Status of ERA method and Pixel Noise Study", HSC WLWG f2f meeting at Princeton, IPMU, Japan, August (2016).
Toru Tamagawa, "X-ray polarimetry mission PRAXyS", 7 years of MAXI : monitoring X-ray transients conference, RIKEN, Japan, December(2016).
Toru Tamagawa, "A Modulated X-ray Generator for Possible Industrial Applications", IEEE NSS/MIC conference 2016, Strasbourg, France,
November (2016).
[Domestic Conference]⋢ᕝᚭ, ᪩⸨㯞⨾, ᒾษ΅, ୰㔝ಇ⏨, ῝ἑὈྖ, Ỉ㔝ᜏྐ, ໭ཱྀ㈗㞝, ⏣୰ៅஅ, ᡞ⏣ⓡ㝧, ᴮᡞ㍤ᥭ, ❑⏣ᜨ, す⏣࿴ᶞ, ⏣ཎㆡ, ୕▼㑳அ, Ⳣ἟ு⣖, ᖜⰋ⤫, ᯘ⏣Ύ, ஭ୖ⩧ኴ, Keith Jahoda, Joanne Hill-Kittle, ࡯࠿ PRAXyS ⾨ᫍࢳ࣮࣒, ࠕX ⥺೫ගほ ⾨ᫍ PRAXyS ࡢ㐍
ᤖ(4)" ᪥ᮏኳᩥᏛ఍ 2017 ᖺ᫓Ꮨᖺ఍, ஑ᕞ኱Ꮫ, 3 ᭶(2017).
୕▼㑳அ, Ⳣ἟ு⣖, ஧ᮧὈ௓, ᯇᮏᾈ඾, ⏣ཎㆡ, ❧ⰼ୍ᚿ, ኱すᓫᩥ, ❧ⰼ೺஧, ୰㔝ಇ⏨, ⋢ᕝᚭ, ᒸᓥᓫ, William Chang, Keith
Jahoda, ࠕX ⥺೫ගほ ⾨ᫍ PRAXyS ᦚ㍕ X ⥺ᮃ㐲㙾⏝ࢧ࣮࣐ࣝࢩ࣮ࣝࢻࡢ㛤Ⓨࠖ ᪥ᮏኳᩥᏛ఍ 2017 ᖺ᫓Ꮨᖺ఍, ஑ᕞ኱Ꮫ, 3 ᭶(2017).
໭ཱྀ㈗㞝, ῝ἑὈྖ, Ỉ㔝ᜏྐ, ⋢ᕝᚭ, ᪩⸨㯞⨾, ᒾษ΅, ୰㔝ಇ⏨, ❑⏣ᜨ, ᴮᡞ㍤ᥭ, ௚ PRAXyS ࢳ࣮࣒, ࠕPRAXyS ⾨ᫍ࡟ᦚ㍕ࡍࡿග㟁Ꮚ㏣㊧ᆺ X ⥺೫ගィࡢ೫ගゅ෌ᵓᡂἲ" ᪥ᮏኳᩥᏛ఍ 2017 ᖺ᫓Ꮨᖺ఍, ஑ᕞ኱Ꮫ, 3 ᭶(2017).
୰㔝ಇ⏨, ⋢ᕝᚭ, ᪩⸨㯞⨾, ᒾษ΅, ❑⏣ᜨ, ໭ཱྀ㈗㞝, ⏣୰ៅஅ, ᡞ⏣ⓡ㝧, ῝ἑὈྖ, Ỉ㔝ᜏྐ, ୕▼㑳அ, ⏣ཎㆡ, ஭ୖ⩧ኴ, ᯘ⏣Ύ,ᴮᡞ㍤ᥭ, Keith Jahoda, Joanne Hill-Kittle, ࡯࠿ PRAXyS ⾨ᫍࢳ࣮࣒, ࠕPRAXyS ⾨ᫍᦚ㍕ࡢ X ⥺࣑࣮ࣛ࡜೫ගィࡢࣅ࣮࣒ࣛ࢖ࣥ࡟ࡼࡿᛶ⬟ホ౯ࠖ ᪥ᮏኳᩥᏛ఍ 2017 ᖺ᫓Ꮨᖺ఍, ஑ᕞ኱Ꮫ, 3 ᭶(2017).
Ⳣ἟ு⣖, ஧ᮧὈ௓, ⏣ཎㆡ, ᯇᮏᾈ඾, ୕▼㑳அ, ❧ⰼ୍ᚿ, ኱すᓫᩥ, ❧ⰼ೺஧, ୰㔝ಇ⏨, ⋢ᕝᚭ, ࠕPRAXyS ⾨ᫍᦚ㍕ X ⥺ᮃ㐲㙾ࢧ࣮࣐ࣝࢩ࣮ࣝࢻ⏝࣏ࣜ࢖࣑ࢻࣇ࢕࣒ࣝࡢ ≉ᛶホ౯" ᪥ᮏኳᩥᏛ఍ 2017 ᖺ᫓Ꮨᖺ఍, ஑ᕞ኱Ꮫ, 3 ᭶ (2017).
❑⏣ࡵࡄ, ⋢ᕝᚭ, ∾ᓥ୍ኵ, ⱂ㔝⣲Ꮚ, ᒾษ΅, ᮡᓮ╬, ୰㔝ಇ⏨, ᑠ㔝ග, ࠕ୰ᛶᏊᫍ኱Ẽ୰࡟࠾ࡅࡿ Z=52 ௜㏆ࡢ㔜ඖ⣲ࡢᏑᅾࠖ ᪥ᮏኳᩥᏛ఍ 2017 ᖺ᫓Ꮨᖺ఍, ஑ᕞ኱Ꮫ, 3 ᭶ (2017).
⋢ᕝᚭ, ᒾษ΅, ୰㔝ಇ⏨, ᪩⸨㯞⨾, ໭ཱྀ㈗㞝, Ỉ㔝ᜏྐ, ῝ἑὈྖ, ᴮᡞ㍤ᥭ, ❑⏣ᜨ, す⏣࿴ᶞ, ⏣ཎㆡ, ୕▼㑳அ, ᖜⰋ⤫, ᯘ⏣Ύ,Keith Jahoda, Joanne Hill, ࡯࠿ PRAXyS ⾨ᫍࢳ࣮࣒, ࠕX ⥺೫ගほ ⾨ᫍ PRAXyS ࡢ㐍ᤖ≧ἣࠖ ᪥ᮏኳᩥᏛ఍ 2016 ᖺ⛅Ꮨᖺ఍, ឡ፾
኱Ꮫ, 9 ᭶(2016).
⏣ཎㆡ, ஧ᮧὈ௓, Ⳣ἟ு⣖, ୕▼㑳அ, ᯇᮏᾈ඾, ⋢ᕝᚭ, ᒸᓥᓫ, ࠕPRAXyS ᦚ㍕⏝ X ⥺ᮃ㐲㙾ࡢࡓࡵࡢࢧ࣮࣐ࣝࢩ࣮ࣝࢻࡢ㛤Ⓨࠖ ᪥ᮏኳᩥᏛ఍ 2016 ᖺ⛅Ꮨᖺ఍, ឡ፾኱Ꮫ, 9 ᭶ (2016).
⋢ᕝᚭ, ᪩⸨㯞⨾, ᒾษ΅, ୰㔝ಇ⏨, ❑⏣ᜨ, す⏣࿴ᶞ, ⏣ཎㆡ, ୕▼㑳அ, Ⳣ἟ு⣖, ῝ἑὈྖ, Ỉ㔝ᜏྐ, ໭ཱྀ㈗㞝, ⏣୰ៅஅ, ᡞ⏣ⓡ㝧, ᴮᡞ㍤ᥭ, ᯘ⏣Ύ, ஭ୖ⩧ኴ, Ώ㎶ఙ, PRAXyS team, ࠕX ⥺೫ගほ ⾨ᫍ PRAXySࠖ ➨ 17 ᅇᏱᐂ⛉Ꮫࢩ࣏ࣥࢪ࣒࢘, Ᏹᐂ⛉Ꮫ◊✲ᡤ, 1 ᭶ (2017).
ᮌᮧᬛᶞ, ࠕDynamics of Jupiter's aurora unveiled by the Hisaki-JUNO-Hubble collaboration: initial resultsࠖ, Symposium on Planetary
Science 2017, ᮾ໭኱Ꮫ, 2 ᭶ (2017).
ᮌᮧᬛᶞ, ྜྷᒸ࿴ኵ, ᅵᒇྐ⣖, ᖹᮌᗣ㝯, ᇐ༓ᑜ, ໭ඖ, ᮧୖ㇦, ᒣᓮᩔ, ⸨ᮏṇᶞ, ࠕࡦࡉࡁ⾨ᫍ࡟ࡼࡿ࣮࢜ࣟࣛ࡜ࣉࣛࢬ࣐౪⤥⋡ࡢ㐃⥆┘ど࡛᫂ࡽ࠿࡟ࡍࡿᮌᫍࢧࣈࢫࢺ࣮࣒ࣛ࢖ࢡ࢖࣋ࣥࢺࡢືຊᏛࠖ, ᆅ⌫㟁☢Ẽ࣭ᆅ⌫ᝨᫍᅪᏛ఍➨ 138 ᅇ⥲఍࣭ㅮ₇఍, ஑ᕞ኱Ꮫ, 11 ᭶(2016).
୰㔝ಇ⏨: ࠕ㛗࿘ᮇ CCO ࢆక࠺ SNR RCW103 ࡜࣐ࢢࢿࢱ࣮SNR CTB109 ࡢẚ㍑" ᒣᙧ┴ⶶ⋤࢔ࢫࢺࣜ࢔࣍ࢸࣝ 9 ᭶ (2016)- 369 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Astro-Glaciology Research Unit
Summary of Research Activities
Our Astro-Glaciology Research Unit promotes both experimental and theoretical studies to open up the new interdisciplinary research
field of astro-glaciology, which combines astrophysics and glaciology.
On the experimental side, we analyze ice cores drilled at the Dome Fuji station, in Antarctica, in collaboration with the National
Institute of Polar Research (NIPR, Tokyo). These ice cores are time capsules. In particular, the ice cores obtained at Dome Fuji are known
to be unique because they contain much more information on conditions in the stratosphere than any other ice cores recovered from otherlocations in either hemisphere. This means that there are significant advantages in using Dome Fuji ice cores if we wish to study
astronomical phenomena of the past. Since gamma-rays and high-energy protons that are emitted in certain astronomical processes affectthe chemical and isotopic compositions in the stratosphere but not those in the troposphere, we have been measuring:(1) Variations in the nitrate ion (NO3-) concentrations in the ice cores, in an effort to establish a new proxy for supernova explosions in
our own galaxy as well as past solar activity.
(2) Variations in the water isotopes (18O and 2H) in the ice cores, in order to construct in more detail records of past changes in thetemperature of the surface of the earth; and(3) Variations in the nitrogen isotope (15N) in the nitrates contained in the ice cores, in order to investigate the possibility of utilizing
15N as a new and more stable proxy for galactic supernovae explosions and past solar activity.
In the case of items (1), (2), and (3), our analyses of Dome Fuji ice cores cover the most recent 2000 years. The temporal resolution of
the results of our research is currently 12 months. We intend to compare the results obtained in item (1) with those in item (2), in order tounderstand better the relationships between solar activity and long-term changes in the temperature of the earth. The underlying
assumptions in item (2) are already well accepted in glaciology. Item (3) refers to one of the very first measurements of 15N concentrationsin ice cores.
On the theoretical side, we are simulating numerically:(4) Changes in the chemical composition of the stratosphere induced by gamma-rays and/or high-energy particles emitted from
explosive astronomical phenomena, such as galactic supernovae and solar proton events; and(5) The explosive nucleosynthesis (including the r-process, the rapid neutron capture process, which creates elements heavier thaniron) that arises in the environment of core-collapse supernova explosions.
Items (4) and (5) in our list, the chemical composition of the stratosphere and explosive nucleosynthesis, are very important insolar–terrestrial research and nuclear astrophysics; furthermore, these simulations provide a theoretical support when considering thecharacteristics of supernova explosions and solar activity, as seen in our ice core data. These studies are also important because it isnecessary to discount the effects of the meteorological noise.
It is noteworthy that the as yet not fully understood frequency of supernova explosions in our galaxy is crucial to an understanding of
the r-process nucleosynthesis. The results obtained from items (1) and (3) are expected to reveal the average rate of supernova explosions in
our galaxy during the past million years of ice deposition.

Members
Research Unit Leader (Lab. Head)
Yuko MOTIZUKI
Research & Technical Scientists
Kazuya TAKAHASHI (Concurrent: RI Application Team, SeniorResearch Scientist)

Yoichi NAKAI (Concurrent: RI Physics Lab., Senior Research
Scientist)

Part-time Workers
Manami MARUYAMA
Yuma HASEBE
Satomi NEGISHI

Sachiko MIYAZAKI
Yoko HOSHINOEmi NISHIZAWA

Visiting Scientists
Yasushige YANO (Concurrent)
Akira HORI (Kitami Inst. of Tech.)

Hideharu AKIYOSHI (Nat䇺l Inst. for Environ. Studies)
Hideki MADOKORO (Mitsubishi Heavy Ind., Ltd.)

Research Consultant
Kenji Tanabe
Student Trainees
Yuma HASEBE (Saitama Univ.)- 370 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
Y. Motizuki, H. Motoyama, Y. Nakai, K. Suzuki, Y. Iizuka and K. Takahashi: “Overview of the chemical composition and characteristics of Na+
and Cl– distributions in shallow samples from Antarctic ice core DF01 (Dome Fuji) drilled in 2001”, Geochemical J., 51, 3, 293-298, 2017,
doi:10.2343/geochemj.2.0458 (Open Access article)*
Shuji Fujita, Kumiko Goto-Azuma, Motohiro Hirabayashi, Akira Hori, Yoshinori Iizuka, Yuko Motizuki, Hideaki Motoyama, Kazuya Takahashi:“Densification of layered firn of the ice sheet at Dome Fuji, Antarctica”, Journal of Glaciology, 21 pages, 2016, doi:10.1017/jog.2016.16(Open Access article)*
Y. Nakai, Y. Motizuki, M. Maruyama, Y. Hasebe, H. Akiyoshi, T. Imamura: “Box-model simulation for influence of solar proton events on the
middle atmosphere”, RIKEN Accel. Prog. Rep. 50, in press*
Y. Motizuki, H. Motoyama, Y. Nakai, K. Suzuki, Y. Iizuka and K. Takahashi: “Characteristics of Na+ and Cl– distributions in shallow samples
from an Antarctic ice core DF01 (Dome Fuji) drilled in 2001: Result of strong atmospheric high-pressure blocking events?”, RIKEN Accel.
Prog. Rep. 50, in press*
Y. Motizuki, K. Takahashi, Y. Nakai, Y. Iizuka, K. Suzuki, H. Motoyama: “Overview of the chemical composition and characteristics of Na+ and
Cl– distributions in samples from Antarctic ice core DF01 (Dome Fuji) drilled in 2001”, RIKEN Accel. Prog. Rep. 49, 133, 2017*
Y. Nakai, Y. Motizuki, M. Maruyama, H. Akiyoshi, T. Imamura: “Box-model simulation for variation of atmospheric chemical composition
caused by solar energetic particles”, RIKEN Accel. Prog. Rep. 49, 132, 2017*
Y. Hasebe, Y. Motizuki, Y. Nakai, K. Takahashi: “Diagnose oscillation properties observed in an annual ice-core oxygen isotope record
obtained from Dronning Maud Land, Antarctica”, RIKEN Accel. Prog. Rep. 49, 131, 2017*[Book](Original Papers) *Subject to Peer Reviewᮃ᭶ඃᏊࠊబ⸨຾ᙪ㸸ࠗே㢮ࡢఫࡴᏱᐂ➨∧࠘㸦ࢩ࣮ࣜࢬ⌧௦ࡢኳᩥᏛ➨ᕳ㸧ࠊSS㸦ࠕ➨❶ඖ⣲ࡢ㉳※ࠖ㸧ࠊᒸᮧᐃ▴௚⦅ࠊ᪥ᮏホㄽ♫ࠊᖺ᭶ ᮃ᭶ඃᏊ㸸ࠕࢼ࢖ࢫࢫࢸࢵࣉ࡞◊✲⪅࠿ࡽぢࡓኚ໬ࡢ᪂₻ὶࠖࠊᩥ㒊⛉Ꮫ┬ᶵ㛵⣬STI Horizonࠊ2017ᖺ➨3ᕳ1ྕࠊpp. 17-20 
Oral Presentations[International Conference etc.](Invited talk) Yuko Motizuki: “Solar signatures in ice cores”, The 10th East Asian Meeting on Astronomy, Seoul, Korea, Sep. 26-30, 2016.
(Invited talk) Yuko Motizuki: “Women astronomers in Japan”, The 10th East Asian Meeting on Astronomy, Seoul, Korea, Sep. 26-30, 2016.
(Invited talk) Yuko Motizuki: “Astronomical signatures embedded in ice cores", Baymfest in Tokyo -Exploring Extreme Forms of Matter-, Tokyo,
Japan, Mar. 14, 2016.
H. Akiyoshi, Y. Nakai, Y. Motizuki, T. Imamura, Y. Yamashita: “A preliminary result of NOx and ozone change simulation for a solar proton
event using a nudged CCM and box chemistry model”, Int. Workshop on Solar Cycle Activity and Impact on Climate for The 2nd PSTEPInternational symposium (PSTEP-2) , Kyoto, March 22, 2017.
Shuji Fujita, Kumiko Goto-Azuma, Hiroyuki Enomoto, Kotaro Fukui, Motohiro Hirabayashi, Akira Hori, Yu Hoshina, Yoshinori Iizuka, Yuko
Motizuki, Hideaki Motoyama, Fumio Nakazawa, Shin Sugiyama, Sylviane Surdyk, Kazuya Takahashi: “Metamorphism of layered firn at
Dome Fuji, Antarctica: Evolution of relations between Near-infrared reflectivity and the other textural/chemical properties”, The 7th
Symposium on Poler Science, Tachikawa, Nov. 29 - Dec. 2, 2016.
Shuji Fujita, Kumiko Goto-Azuma, Hiroyuki Enomoto, Kotaro Fukui, Motohiro Hirabayashi, Akira Hori, Yu Hoshina, Yoshinori Iizuka, Yuko
Motizuki, Hideaki Motoyama, Fumio Nakazawa, Shin Sugiyama, Sylviane Surdyk, Kazuya Takahashi: “Metamorphism of layered firn at
Dome Fuji, Antarctica: Evolution of relations between Near-infrared reflectivity and the other textural/chemical properties”, XXXIVSCAR(Scientific Committee on Antarctic Research) Open Science Conference, Kuala Lumpur, Malaysia, Aug. 20-30, 2016.
[Domestic Conference]ᮃ᭶ඃᏊࠊ୰஭㝧୍ࠊ㧗ᶫ࿴ஓࠊ࡯࠿ࢻ࣮࣒ࡩࡌịᗋࢥ࢔ゎᯒࢳ࣮࣒㸸ࠕ༡ᴟịᗋࢥ࢔࡟้ࡲࢀࡓ㉸᪂ᫍ࢝ࢩ࢜࣌࢔A ࡢ⇿Ⓨᖺ௦ࠖࠊ᪥ᮏኳᩥᏛ఍᫓Ꮨᖺ఍ࠊ⚟ᒸࠊ2017ᖺ3᭶17᪥.
(ᣍᚅㅮ₇) ᮃ᭶ඃᏊ㸸ᇸ⋢኱Ꮫ⌮Ꮫ㒊≀⌮㔞ᏊຊᏛ≉ูㅮ⩏ࠕ࢔࢖ࢫࢥ࢔࠿ࡽࡉࡄࡿኳᩥ࣭Ᏹᐂࡢࢧ࢖࢚ࣥࢫ í㐣ཤࡢ㉸᪂ᫍ⇿Ⓨ࡜ኴ㝧άືࠊᆅ⌫࡬ࡢᙳ㡪íࠖࠊࡉ࠸ࡓࡲࠊ2017ᖺ1᭶23᪥.
(ᣍᚅㅮ₇) ୰஭㝧୍㸸➨36ᅇ໭ᾏ㐨኱Ꮫప ⛉Ꮫ◊✲ᡤࢭ࣑ࢼ࣮ࠕኴ㝧ࣉࣟࢺࣥ⌧㇟࡟ㄏ㉳ࡉࢀࡿᆅ⌫୰ᒙ኱Ẽࡢᚤ㔞ᡂศ⃰ᗘኚ໬ í࣎ࢵࢡࢫࣔࢹࣝࢩ࣑࣮ࣗࣞࢩࣙࣥ࡟ࡼࡿ࢖࢜ࣥ໬Ꮫ཯ᛂࡢᙳ㡪ࡢ◊✲íࠖࠊᮐᖠࠊ2017ᖺ1᭶19᪥.
(ᣍᚅㅮ₇) ୰஭㝧୍ࠊᮃ᭶ඃᏊࠊ୸ᒣ┿⨾ࠊ⛅ྜྷⱥ἞ࠊ௒ᮧ㝯ྐ㸸ࠕኴ㝧ࣉࣟࢺࣥ⌧㇟ࡀᘬࡁ㉳ࡇࡍ୰ᒙ኱Ẽ࡛ࡢ࢖࢜ࣥ໬Ꮫ཯ᛂࡢᙳ㡪㸸ࠕᏱᐂ✵㛫࠿ࡽࡢᆅ⌫㉸㧗ᒙ኱Ẽほ ࡟㛵ࡍࡿ◊✲఍ࠖྜྠ࣎ࢵࢡࢫࣔࢹࣝࢩ࣑࣮ࣗࣞࢩࣙࣥ࡟ࡼࡿ◊✲ࠖࠊᖹᡂ28ᖺᗘࠕMTI◊✲㞟఍ࠖ◊✲఍ࠊᑠ㔠஭ࠊ2016ᖺ8᭶29᪥.
㧗ᶫ࿴ஓࠊᮃ᭶ඃᏊࠊ୰஭㝧୍ࠊᮏᒣ⚽᫂㸸ࠕ༡ᴟࢻ࣮࣒ࡩࡌᇶᆅ࡛᥀๐ࡉࢀࡓ࢔࢖ࢫࢥ࢔ࡢỈྠ఩యẚศᯒ࡟ᇶ࡙ࡃ㐣ཤ2000ᖺࡢ㧗᫬㛫ศゎ⬟Ẽ ኚືࠖ
ࠊ͆The isotopic measuremants of oxygen and hydrogen in Dome-Fuji (Antarctica) ice core:Annually-resolved temperaturereconstructions of the past 2000 years͇ࠊ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ2016ᖺ㐃ྜ኱఍ࠊ༓ⴥࠊ2016ᖺ5᭶22-26᪥.
୰஭㝧୍ࠊᮃ᭶ඃᏊࠊ୸ᒣ┿⨾ࠊ⛅ྜྷⱥ἞ࠊ௒ᮧ㝯ྐ㸸ࠕኴ㝧㧗࢚ࢿࣝࢠ࣮⢏Ꮚࡢ኱Ẽ࡬ࡢᙳ㡪࡟㛵ࡍࡿ࣎ࢵࢡࢫࣔࢹࣝࢩ࣑࣮ࣗࣞࢩࣙࣥ㸸୰ᒙ኱Ẽ࡛ࡢᚤ㔞໬Ꮫ✀ࡢኚືࠖࠊ
͆Box-model simulation for atmospheric effect of solar energetic particles: variation of trace chemical
species in the middle atmosphere͇ࠊ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ2016ᖺ㐃ྜ኱఍ࠊ༓ⴥࠊ2016ᖺ5᭶22-26᪥.
Shuji Fujita, Kumiko Goto-Azuma, Hiroyuki Enomoto, Kotaro.Fukui, Motohiro Hirabayashi, Akira Hori, Yu Hoshina, Yoshinori Iizuka, Yuko
Motizuki, Hideaki Motoyama, Fumio Nakazawa, Shin Sugiyama, Sylviane Surdyk, Kazuya Takahashi:͆Metamorphism of layered firn at
Dome Fuji, Antarctica: Evolution of relations between Near-infrared reflectivity and the other textural and chemical properties͇ࠊ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ2016ᖺ㐃ྜ኱఍ࠊ༓ⴥࠊ2016ᖺ5᭶22-26᪥.

- 371 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES୕Ꮿ ⰧἋࠊቑ⏣ බ᫂ࠊᇼෆ ୍✑ࠊᮏᒣ ⚽᫂ࠊᯇᓮ ᾈஅࠊᮃ᭶ ඃᏊࠊ㧗ᶫ ࿴ஓࠊ୰஭ 㝧୍㸸ࠕࢻ࣮࣒ࡩࡌ࢔࢖ࢫࢥ࢔ࡢ10Beศᯒ࡟ࡼࡿ
༢ᖺᏱᐂ⥺࢖࣋ࣥࢺࡢㄪᰝࠖ ࠊ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ2016ᖺ㐃ྜ኱఍ࠊ༓ⴥࠊ2016ᖺ5᭶22-26᪥.

Posters Presentations[International Conference etc.]
Yuko Motizuki, Kazuya Takahashi, Yoichi Nakai, and Hideaki Motoyama: “Annually-resolved temperature reconstructions of the past 2000
years from Dome-Fuji, East Antarctica” (A poster paper), EGU General Assembly 2016, Vienna, Austria, Apr. 17-22, 2016.
[Domestic Conference]㛗㇂㒊៧☻ࠊᮃ᭶ඃᏊࠊ୰஭㝧୍ࠊ㧗ᶫ࿴ஓ㸸ࠕ༡ᴟ࠾ࡼࡧ໭ᴟ࢔࢖ࢫࢥ࢔ࡢ㓟⣲ྠ఩యẚ࠿ࡽᚓࡽࢀࡿẼ ኚື࿘ᮇࠖ㸦࣏ࢫࢱ࣮Ⓨ⾲㸧ࠊ͆Diagnose oscillation properties of ț18O embeded in ice cores from Antarctica and Greenland”ࠊ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ2016ᖺ㐃ྜ኱఍ࠊ
༓ⴥࠊ2016ᖺ5᭶22-26᪥.

- 372 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Research Group for Superheavy Element
1. Abstract
The elements with their atomic number Z>103 are called as trans-actinide or superheavy elements. The chemical properties of thoseelements have not yet been studied in detail. Those elements do not exist in nature. Therefore, they must be produced by artificially for thescientific study of those elements. In our laboratory, we have been studying the physical and chemical properties of the superheavy
elements utilizing the accelerators in RIKEN and various methods of efficient production of the superheavy elements.

2. Major Research Subjects(1) Search for new superheavy elements(2) Decay spectroscopy of the heaviest nuclei(3) Study of the chemical properties of the heaviest elements(4) Study of the reaction mechanism of the fusion process (theory)

3. Summary of Research Activity(1) Searching for new elements
To expand the periodic table of elements and the nuclear chart, we will search for new elements.
(2) Spectroscopic study of the nucleus of heavy elements
Using the high sensitivity system for detecting the heaviest element, we plan to perform a spectroscopic study of nuclei of the heavy
elements.
(3) Chemistry of superheavy elements
Study of chemistry of the trans-actinide (superheavy element) has just started world-wide, making it a new frontier in the field ofchemistry. Relativistic effects in chemical property are predicted by many theoretical studies. We will try to develop this new field.
(4) Study of a reaction mechanism for fusion process
Superheavy elements have been produced by complete fusion reaction of two heavy nuclei. However, the reaction mechanism of thefusion process is still not well understood theoretically. When we design an experiment to synthesize nuclei of the superheavy elements, weneed to determine a beam-target combination and the most appropriate reaction energy. This is when the theory becomes important. We will
try to develop a reaction theory useful in designing an experiment by collaborating with the theorists.
(5) Research Highlight
The discovery of a new element is one of the exciting topics both for nuclear physicists and nuclear chemists. The elements with their
atomic number Z>103 are called as trans-actinides or superheavy elements. The chemical properties of those elements have not yet beenstudied in detail. Since those elements do not exist in nature, they must be produced by artificially, by using nuclear reactions for the studyof those elements. Because the production rate of atoms of those elements is extremely small, an efficient production and collection are key
issues of the superheavy research. In our laboratory, we have been trying to produce new elements, studying the physical and chemical
properties of the superheavy elements utilizing the accelerators in RIKEN.
Although the Research Group for Superheavy element has started at April 2013, the Group is a renewal of the Superheay Element
Laboratory started at April 2006, based on a research group which belonged to the RIKEN accelerator research facility (RARF), and hadstudied the productions of the heaviest elements. The main experimental apparatus is a gas-filled recoil ion separator GARIS. The heaviest
elements with their atomic numbers, 107 (Bohrium), 108 (Hassium), 109 (Meitnerium), 110 (Darmstadtium), 111 (Roentogenium), and 112(Copernicium) were discovered as new elements at Helmholtzzentrum für Schwerionenforschung GmbH (GSI), Germany by using 208Pb or
209Bi based complete fusion reactions, so called “cold fusion” reactions. We have made independent confirmations of the productions ofisotopes of 108th, 110th, 111th, and 112th elements by using the same reactions performed at GSI. After these work, we observed an isotopeof the 113th element, 278113, in July 2004, in April, 2005, and in August 2012. The isotope, 278113, has both the largest atomic number, (Z =113) and atomic mass number (A = 278) which have determined experimentally among the isotopes which have been produced by cold
fusion reactions. We could show the world highest sensitivity for production and detection of the superheavy elements by theseobservations. Our results that related to 278113 has been recognized as a discovery of new element by a Joint Working Party of theInternational Union of Pure and Applied Chemistry (IUPAC) and International Union of Pure and Applied Physics (IUPAP). Finally, we
named the 113th element as “Nihonium”.
We decided to make one more recoil separator GARIS-II, which has an acceptance twice as large as existing GARIS, in order torealize higher sensitivity. The design of GARIS-II has finished in 2008. All fabrication of the separator will be finished at the end of fiscal
year 2008. It has been ready for operation after some commissioning works.
Preparatory work for the study of the chemical properties of the superheavy elements has started by using the gas-jet transport system
coupled to GARIS. The experiment was quite successful. The background radioactivity of unwanted reaction products has been highly
suppressed. Without using the recoil separator upstream the gas-jet transport system, large amount of unwanted radioactivity strongly
prevents the unique identification of the event of our interest. This new technique makes clean and clear studies of chemistry of the heaviest
elements promising.
The spectroscopic study of the heaviest elements has started by using alpha spectrometry. New isotope, 263Hs (Z=108), which has thesmallest atomic mass number ever observed among the Hassium isotopes, had discovered in the study. New spectroscopic information for
264Hs and its daughters have obtained also. The spectroscopic study of Rutherfordium isotope 261Rf (Z=104) has done and 1.9-s isomericstate has directly produced for the first time.

- 373 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESPreparatory works for the study of the new superheavy elements with atomic number 119 and 120 have started in 2013. We measured
the reaction products of the 248Cm (48Ca, xn) 296-xLv (Z=116) previously studied by Frelov Laboratory of Nuclear Reaction, Russia, and GSI.
We observed 5 isotopes in total which tentatively assigned to 293Lv, and 292Lv.

Members
Group Director
Kosuke MORITA
Visiting Scientist
Kunihiro FUJITA (Kyushu Univ.)
Student Trainees
Taiki TANAKA (Kyushu Univ.)
Yuki YAMANO (Kyushu Univ.)

Kenyu WATANABE (Kyushu Univ.)

Publications[Journal]
D. Kaji, K. Morita, K. Morimoto, H. Haba, M. Asai, K. Fujita, Z. Gan, H. Geissel, H. Hasebe, S. Hofmann, M. Huang, Y. Komori, L. Ma, J.
Maurer, M. Murakami, M. Takeyama, F. Tokanai, T. Tanaka, Y. Wakabayashi, T. Yamaguchi, S. Yamaki, and A. Yoshida “Study of the
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Oral Presentations>,QWHUQDWLRQDO&RQIHUHQFHHWF@.0RULWD'LVFRYHU\RI(OHPHQWDQG)XWXUH5HVHDUFK'LUHFWLRQDW5,.(11REHO6\PSRVLD16 &KHPLVWU\DQG3K\VLFVRI+HDY\DQG6XSHUKHDY\(OHPHQWV6FDQLD6ZHGHQ0D\WR-XQH
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+DED<.RPRUL6<DQRX%-3*DOO=$VIDUL+)DXUH++DVHEH0+XDQJ-.DQD\D00XUDNDPL$<RVKLGD7. Yamaguchi, T.
7RNDQDL7<RVKLGD=*DQ/0D+*HLVVHO6+RIPDQQ<0DXUHU6<DPDPRWR<<DPDQR.:DWDQDEH6,VKL]DZD0$sai, R.
$RQR6*RWR..DWRUL6WXG\RIEDUULHUGLVWULEXWLRQLQKHDY\UHDFWLRQV\VWHPDWWKH5,.(1-*$5,6)XVLRQ+REDUW$XVWUDOLD)HEUXDU\
K. Morimoto “7KH GLVFRYHU\ RI HOHPHQW  DW 5,.(1´ WK ,QWHUQDWLRQDO 1XFOHDU 3K\VLFV &RQIHUHQFH ,13&  6HS - 
$GHODLGH&RQYHQWLRQ&HQWHU$XVWUDOLD 3OHQDU\WDON
T. Tanaka, "Study of barrier distribXWLRQLQKHDY\UHDFWLRQV\VWHPDWWKH5,.(1-*$5,6WK$65&,QWHUQDWLRQDO:RUNVKRS µ([SHULPHQWDO
DQG7KHRUHWLFDO$GYDQFHVLQ)LVVLRQDQG+HDY\1XFHL¶7RNDL-DSDQ'HFHPEHU[Domestic Conference].0RULWD-RXUQH\WRWKH'LVFRYHU\RI(OHPHQWWK*HQHUDO0HHWLQJRI-DSDQHVH6RFLHW\RI&KHPRWKHUDS\.REH-DSDQ-XQH.0RULWD'LVFRYHU\RI(OHPHQW-$,)*HQHUDO0HHWLQJ  7RN\R-DSDQ-XQH
.:DWDQDEH'.DML71LZDVH7+LUDQR.)XMLWD<<DPDQR60LWVuoka, K. Morimoto, K. Morita "Search for barrier distributions of
7L&PDQG9&PUHDFWLRQWK$QQXDO0HHWLQJRI.\XVKX%UDQFKRI-36)XNXRND8QLYHUVLW\-DSDQ'HFHPEHU
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K. Morimoto, T. Tanaka, "⌮◊࡟࠾ࡅࡿ㉸㔜ඖ⣲◊✲ࡢ௒ᚋ5,%) ࣑ࢽ࣭࣮࣡ࢡࢩࣙࢵࣉࠕ㉸㔜᰾⏕ᡂ཯ᛂࡢ⌮ㄽⓗ⌮ゎ࡟ྥࡅ࡚ࠖ5,.(1-DSDQ$XJXVW
7 7DQDND 5,%) ࣑ࢽ࣭࣮࣡ࢡࢩࣙࢵࣉࠕ㉸㔜᰾⏕ᡂ཯ᛂࡢ⌮ㄽⓗ⌮ゎ࡟ྥࡅ࡚ࠖࡢሗ࿌´ ᪥ᮏ≀⌮Ꮫ఍  ⛅Ꮨ኱఍ 665, ࢖ࣥࣇ࢛࣮
࣐࣑࣮ࣝࢸ࢕ࣥࢢ0L\D]DNL8QLYHUVLW\-DSDQ6HSWHPEHU
T. Tanaka, "᪂ඖ⣲ྜᡂࡢࡓࡵࡢ᰾⼥ྜ཯ᛂ࡟࠾ࡅࡿධᑕ᰾౫Ꮡᛶ´ ᮾᾏ࣭㔜࢖࢜ࣥ⛉Ꮫࢩ࣏ࣥࢪ࣒࢘ ʊࢱࣥࢹ࣒ຍ㏿ჾᡂᯝሗ࿌఍ʊ
-$($-DSDQ-DQXDU\
71LZDVH.0RULWD.)XMLWD<<DPDQR.:DWDQDEH60LWVXRND7+LUDQR'.DML.0RULPRWR++DED%-3*DOO=$VIDUL´Measurementof barrier distribution for 3E 9[Q -['EUHDFWLRQ´-36WK$QQXDO0HHWLQJ  2VDND8QLYHUVLW\-DSDQ0DUFK
'.DML.0RULWD.0RULPRWR++DED³)URQWOLQHLQVXSHUKHDY\HOHPHQWVWXG\XVLQJDJDV-ILOOHGUHFRLOVHSDUDWRU*$5,6´ ➨  ᅇᨺᑕ໬Ꮫウㄽ఍7RKRNX8QLYHUVLW\-DSDQ6HSWHPEHU- LQYLWHG
D. Kaji, K. Morimoto, H. Haba, Y. Wakabayashi, M. Takeyama, S. Yamaki, Y. Komori, S. Yano, S. Goto “Study on hot fusion reaction of
&D8ĺ&Q XVLQJ*$5,6-,,´ ➨  ᅇᨺᑕ໬Ꮫウㄽ఍7RKRNX8QLYHUVLW\-DSDQ6HSWHPEHU-
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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017). 0RULPRWR ³6WDWXV DQG IXWXUH SODQ RI 6XSHUKHDY\ HOHPHQW UHVHDUFK DW 5,.(1´ 5,%) 8VHUV 0HHWLQJ  6HSWHPEHU   5,.(1JA3$1᳃ᮏᖾྖࠕ ␒ඖ⣲ࡢྜᡂ࡜☜ㄆࠖ$02 ウㄽ఍ࠊ⌮◊ࠊ࿴ග  ᖺ  ᭶  ᪥
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- 375 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Research Group for Superheavy Element
Superheavy Element Production Team
1. Abstract
The elements with their atomic number Z>103 are called as trans-actinide or superheavy elements. The chemical properties of thoseelements have not yet been studied in detail. Those elements do not exist in nature. Therefore, they must be produced by artificially for thescientific study of those elements. In our laboratory, we have been studying the physical and chemical properties of the superheavy
elements utilizing the accelerators in RIKEN and various methods of efficient production of the superheavy elements.

2. Major Research Subjects(1) Search for new supreheavy elements(2) Decay spectroscopy of the heaviest nuclei(3) Study of the chemical properties of the heaviest elements(4) Study of the reaction mechanism of the fusion process (theory)㻌

Summary of Research Activity(1) Searching for new elements
To expand the periodic table of elements and the nuclear chart, we will search for new elements.
(2) Spectroscopic study of the nucleus of heavy elements
Using the high sensitivity system for detecting the heaviest element, we plan to perform a spectroscopic study of nuclei of theheavy elements.
(3) Chemistry of superheavy elements
Study of chemistry of the trans-actinide (superheavy element) has just started world-wide, making it a new frontier in the field ofchemistry. Relativistic effects in chemical property are predicted by many theoretical studies. We will try to develop this new field.
(4) Study of a reaction mechanism for fusion process
Superheavy elements have been produced by complete fusion reaction of two heavy nuclei. However, the reaction mechanism of
the fusion process is still not well understood theoretically. When we design an experiment to synthesize nuclei of the superheavy
elements, we need to determine a beam-target combination and the most appropriate reaction energy. This is when the theory becomes
important. We will try to develop a reaction theory useful in designing an experiment by collaborating with the theorists.

Members
Team Leader
Kosuke MORITA (concurrent; Group Director, Research Groupfor Superheavy Element)
Research & Technical Scientist
Kouji MORIMOTO (Senior Research Scientist, concurrent; Team
Leader, Superheavy Element Device Development Team)
Nishina Center Research Scientist
Daiya KAJI (concurrent; Superheavy Element Device
Development Team)
Nishina Center Technical Scientist-Consultant
Akira YONEDA
Research Consultant
Kenji KATORI
Junior Research Associate
Taiki TANAKA(Kyushu Univ.)
Visiting Scientists
Hiroyuki KOURA (JAEA)
Benoit Jean-Paul GALL (Strasbourg Univ.)

Marc ASFARI (Institut Pluridisciplinaire Hubert Curien)
Mirei TAKEYAMA (Yamagata Univ.)

Student Trainees
Toshitaka NIWASE (Kyushu Univ.)
Takeshi HIRANO (Kyushu Univ.)
Shun MITSUOKA(Kyushu Univ.)
Pierre BRIONNET (Strasbourg University)- 376 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Publications[Journal]
D. Kaji, K. Morita, K. Morimoto, H. Haba, M. Asai, K. Fujita, Z. Gan, H. Geissel, H. Hasebe, S. Hofmann, M. Huang, Y. Komori, L. Ma, J.
Maurer, M. Murakami, M. Takeyama, F. Tokanai, T. Tanaka, Y. Wakabayashi, T. Yamaguchi, S. Yamaki, and A. Yoshida “Study of the
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T. Tanaka, "᪂ඖ⣲ྜᡂࡢࡓࡵࡢ᰾⼥ྜ཯ᛂ࡟࠾ࡅࡿධᑕ᰾౫Ꮡᛶ´ ᮾᾏ࣭㔜࢖࢜ࣥ⛉Ꮫࢩ࣏ࣥࢪ࣒࢘ ʊࢱࣥࢹ࣒ຍ㏿ჾᡂᯝሗ࿌఍ʊ
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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES᳃ᮏᖾྖࠕ ␒᪂ඖ⣲ࡢⓎぢࠖ࢔ࢺ࣒ࢧ࢖࢚ࣥࢫࣇ࢙࢔ㅮ₇఍ ࠊி㒔ࠊ⇃ྲྀ஺ὶࢭࣥࢱ࣮ࠊ ᖺ  ᭶ 22 ᪥᳃ᮏᖾྖࠕ ␒᪂ඖ⣲ࢽ࣍ࢽ࣒࢘ࡢⓎぢࠖᖹᡂ 28 ᖺᗘ ኱Ꮫ➼࡟࠾ࡅࡿᨺᑕ⥺Ᏻ඲⟶⌮◊ಟ఍ࠊᮾி኱Ꮫ ㎰Ꮫ㒊 ᘺ⏕ㅮᇽ ୍᮲࣮࣍ࣝࠊ
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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Research Group for Superheavy Element
Superheavy Element Device Development Team
1. Abstract
A gas-filled recoil ion separator has been used as a main experimental device for the study of superheavy elements. This team is incharge of maintain, improve, develop and operate the separators and related devices. There are two gas-filled recoil ion separators installed
at RILAC experimental hall. One is GARIS that is designed for symmetric reaction such as cold-fusion reaction, and the other is newly
developed GARIS-II that is designed for an asymmetric reaction such as hot-fusion reaction. New elements 278113 were produced by 70Zn +209Bi reaction using GARIS. Further the new element search Z > 118 are preparing by using GARIS-II.

2. Major Research Subjects(1) Maintenance of GARIS and development of new gas-filled recoil ion separator GARIS-II.
(2) Maintenance and development of detector and DAQ system for GARIS and GARIS-II.
(3) Maintenance and development of target system for GARIS and GARIS-II.

3. Summary of Research Activity
The GARIS-II is newly developed which has an acceptance twice as large as existing GARIS, in order to realize higher sensitivity forasymmetric reaction such as a hot fusion reaction. After some commissioning works, the GARIS-II has been ready for new element
research. We will also offer user-support if a researcher wishes to use the devices for his/her own research program.
Members
Team Leader
Kouji MORIMOTO
Nishina Center Research Scientist
Daiya KAJI
Junior Research Associate
Sayaka YAMAKI (Saitama Univ.)
Visiting Scientists
Fuyuki TOKANAI (Yamagata Univ.)
Student Trainee
Satoshi ISHIZAWA (Yamagata Univ.)
Yuichiro INOMATA (Yamagata Univ

Ryutaro ITO (Yamagata Univ.)

Publications[Journal]
D. Kaji, K. Morita, K. Morimoto, H. Haba, M. Asai, K. Fujita, Z. Gan, H. Geissel, H. Hasebe, S. Hofmann, M. Huang, Y. Komori, L. Ma, J.
Maurer, M. Murakami, M. Takeyama, F. Tokanai, T. Tanaka, Y. Wakabayashi, T. Yamaguchi, S. Yamaki, and A. Yoshida “Study of the
5HDFWLRQ&D&Pĺ/Y DW5,.(1-*$5,6´-RXUQDORIWKH3K\VLFDO6RFLHW\RI-DSDQ  [ゎㄝ䚸࿴ᩥ]D. Kaji, K. Morimoto “Ẽయ඘ሸᆺ཯㊴࢖࢜ࣥศ㞳⿦⨨ *$5,6-,,´ ᨺᑕ໬Ꮫ 7KH -DSDQ 6RFLHW\ RI 1XFOHDU DQG 5DGLRFKHPLFDO 6FLHQFHV
9ROSS-᳃ᮏᖾྖࠕ᪂ඖ⣲“ࢽ࣍ࢽ࣒࢘´ࡢⓎぢࠖ┿✵ࢪ࣮ࣕࢼࣝ S- ᖺ  ᭶᳃ᮏᖾྖࠕ᪂ඖ⣲Ⓨぢࡲ࡛ࡢ㐨ࡢࡾࠖරᗜᩍ⫱  ᭶ྕ 1RS-
Oral Presentations>,QWHUQDWLRQDO&RQIHUHQFHHWF@.0RULWD'LVFRYHU\RI(OHPHQWDQG)XWXUH5HVHDUFK'LUHFWLRQDW5,.(11REHO6\PSRVLD16&KHPLVWU\DQG3K\VLFVRI +HDY\DQG6XSHUKHDY\(OHPHQWV6FDQLD6ZHGHQ0D\WR-XQH
K. Morita, "7KH'LVFRYHU\RI6XSHU-+HDY\(OHPHQWRI$WRPLF1XPEHU= DQG%H\RQG1XFOHLLQWKH&RVPRV;,9 1,&;,9 7RNL0HVVH
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Tokanai, T. Yoshida, Z. Gan, L. Ma, H. Geissel, S. Hofmann, Y. Maurer, S. Yamamoto, Y. YamanR.:DWDQDEH6,VKL]DZD0$VDL5
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K. Morimoto “7KH GLVFRYHU\ RI HOHPHQW  DW 5,.(1´ WK ,QWHUQDWLRQDO 1XFOHDU 3K\VLFV &RQIHUHQFH ,13&  6HS - 
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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

and ThHRUHWLFDO$GYDQFHVLQ)LVVLRQDQG+HDY\1XFHL¶7RNDL-DSDQ'HFHPEHU[Domestic Conference].0RULWD-RXUQH\WRWKH'LVFRYHU\RI(OHPHQWWK*HQHUDO0HHWLQJRI-DSDQHVH6RFLHW\RI&KHPRWKHUDS\.REH-DSDQ-XQH
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K. Morimoto, T. Tanaka, "⌮◊࡟࠾ࡅࡿ㉸㔜ඖ⣲◊✲ࡢ௒ᚋ", 5,%) ࣑ࢽ࣭࣮࣡ࢡࢩࣙࢵࣉࠕ㉸㔜᰾⏕ᡂ཯ᛂࡢ⌮ㄽⓗ⌮ゎ࡟ྥࡅ࡚ࠖ5,.(1-DSDQ$XJXVW
T. Tanaka, "5,%) ࣑ࢽ࣭࣮࣡ࢡࢩࣙࢵࣉࠕ㉸㔜᰾⏕ᡂ཯ᛂࡢ⌮ㄽⓗ⌮ゎ࡟ྥࡅ࡚ࠖࡢሗ࿌" , ᪥ᮏ≀⌮Ꮫ఍  ⛅Ꮨ኱఍ 665, ࢖ࣥࣇ࢛࣮
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- 380 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Nuclear Transmutation Data Research Group
1. Abstract
The disposal of high-level radioactive wastes from nuclear power plants is a problem considered to be one of the most important
issues at both national and international levels. As a fundamental solution to the problem, the establishment of nuclear transmutation
technology where long-lived nuclides can be changed to short-lived or stable ones will be vital. Progress in R & D in the transmutation of
long-lived fission products (LLFP) in the nuclear wastes however, has been slow. Our group aims to obtain reaction data of LLFP at RIBF
and other facilities which may lead to a new discovery and invention for peaceful use of nuclear power and the welfare of humanity.

2. Major Research Subjects
The Group is formed by three research teams. The first two Teams, “Fast RI Data Team” and “Slow RI Data Team”, are in chargeof proton- and deuteron-induced reaction data for LLFP in inverse kinematics at RIBF. The third Team “Muon Data Team” is to obtainmuon capture data of LLFP at muon facilities. All the teams are focusing to obtain high-quality data which are essentially necessary toestablish reliable reaction models. Each team has its own subjects and promotes LLFP reaction programs based on their large experiences,
techniques and skills.

3. Summary of Research Activity
In 2014, all the teams polished up experimental strategies, formed collaboration and prepared experiments. Physics runs forspallation reaction and Coulomb breakup reaction with the beams at 100-200 MeV/u were successfully organized by using the ZeroDegreeand SAMURAI spectrometers at RIBF in 2015-2016. In 2017, a physics run with an energy-decelerated radioactive beam will be
conducted under collaboration with CNS, Univ. of Tokyo. The muon program started at J-PARC and RCNP (Osaka University) in spring2016. A neutron detection array was newly developed to measure evaporation neutrons after muon capture process, and was utilized at anexperiment at RCNP in February 2017. In 2017 and 2018, experiments will be organized at both RAL and RCNP to have complete sets ofthe muon data for a specific LLFP nuclide.

Members
Group Director
Hiroyoshi SAKURAI (concurrent: Chief Scientist, RI Physics
Lab.)
Assitant
Izumi YOSHIDA (Apr. 1, 2015 – )Asako TAKAHASHI (Apr. 1, 2015 – )- 381 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Nuclear Transmutation Data Research Group
Fast RI Data Team
1. Abstract
Fast RI team aims at obtaining and accumulating the cross section data for long lived fission products (LLFPs) in order to explore thepossibility of using accelerator for nuclear transmutation.
LLFPs as nuclear waste have been generated continuously in nuclear power plants for wealth for human lives, while people noticed theway of disposal has not necessarily been established, especially after the Fukushima Daiichi power plant disaster. One of the ways toreduce the amount of LLFP or to recover them as recycled resources is nuclear transmutation technique.
RIBF facility has a property to generate such LLFP as a secondary beam and the beam species are identified by event by event. Utilizing
the property, absolute values of the cross section of various reactions on LLFPs are measured and accumulated as database.

2. Major Research Subjects
1) Measurement of reaction products by the interaction of LLFPs with proton, deuteron, and photon to explore candidate reactions fortransmutation of LLFPs.
2) Evaluation of the cross section data for the neutron induced reactions from the obtained data.

3. Summary of Research Activity
1) Acting as collaboration hub on many groups which plan to take data using fast RI beam in RIBF facility.
2) Concentrating on take data for proton and deuteron induced spallation reactions with inverse kinematics.
3) Accumulating the cross section data and evaluating them as evaluated nuclear data.
4) Evaluating cross section of neutron induced reaction on LLFP by collaborating with the nuclear model calculation and evaluation group.

Members
Team Leader
Hideaki OTSU (Concurrent: Team Leader, SAMURAI Team)Technical Staff I
Nobuyuki CHIGA
Student Trainees
Shouhei ARAKI (Kyushu Univ.)
Tatsuya YAMAMOTO (Miyazaki Univ.)
Keita NAKANO (Kyushu Univ.)
Ayaka IKEDA (Niigata Univ.)
Kazuya CHIKAATO (Niigata Univ.)
Hiroki TAKAHASHI (Niigata Univ.)
Yoshiki SOUDO䠄Miyazaki Univ.䠅

Kenji NISHIZUKA (Niigata Univ.)
Junki SUWA (Kyushu Univ.)㻌
Masamichi AMANO (Rikkyo Univ.)
Junki AMANO (Rikkyo Univ.)
Akira HOMMA(Niigata Univ.)
Naoto KANDA(Niigata Univ.)

List of Publications & Presentations
Publications[Journal](Original Papers)
H. Wang, H. Otsu, H. Sakurai, D. Ahn, M. Aikawa, T. Ando, S. Araki, S. Chen, N. Chiga, P. Doornenbal, N. Fukuda, T. Isobe, S.
Kawakami, S. Kawase, T. Kin, Y. Kondo, S. Koyama, S. Kubono, Y. Maeda, A. Makinaga, M. Matsushita, T. Matsuzaki, S. Michimasa,
S. Momiyama, S. Nagamine, T. Nakamura, K. Nakano, M. Niikura, T. Ozaki, A. Saito, T. Saito, Y. Shiga, M. Shikata, Y. Shimizu, S.
Shimoura, T. Sumikama, P.A. Söderström, H. Suzuki, H. Takeda, S. Takeuchi, R. Taniuchi, Y. Togano, J. Tsubota, M. Uesaka Y.
Watanabe, Y. Watanabe, K. Wimmer, T. Yamamoto, K. Yoshida, ’’Spallation reaction study for the long-lived fission product 107Pd’’,
Prog Theor Exp Phys (2017) 2017 (2): 021D01.
H. Wang, H. Otsu, H. Sakurai, D.S. Ahn, M. Aikawa, P. Doornenbal, N. Fukuda, T. Isobe, S. Kawakami, S. Koyama, T. Kubo, S. Kubono, G.
Lorusso, Y. Maeda, A. Makinaga, S. Momiyama, K. Nakano, M. Niikura, Y. Shiga, P.-A. Söderström, H. Suzuki, H. Takeda, S. Takeuchi, R.
Taniuchi, Ya. Watanabe, Yu. Watanabe, H. Yamasaki, K. Yoshida, “Spallation reaction study for fission products in nuclear waste: Cross
section measurements for 137Cs and 90Sr on proton and deuteron”, Phys. Lett. B 754 (2016), 104-108.
(Proceedings)
H. Wang, H. Otsu, H. Sakurai et al., Spallation reaction study for fission products in nuclear waste: Cross section measurements for 137Cs,
90
Sr and 107Pd on proton and deuteron, accepted, the Proceeding of ND2016, October, 2016
H. Wang, H. Otsu, H. Sakurai et al., Spallation reaction study for the long-lived fission products in nuclear waste: Cross section
measurements for 137Cs, 90Sr and 107Pd using inverse kinematics method, accepted, the Proceeding of INES-5, January 2017
S. Kawase et al., "Cross section measurement of residues produced in proton- and deuteron-induced spallation reactions on 93Zr at
100MeV/u using the inverse kinematics method", Proceedings of ND2016 International Conference on NUCLEAR DATA FOR SCIENCE- 382 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

AND TECHNOLOGY
K. Nakano et al., "Cross sections for nuclide production in proton- and deuteron-induced reactions on niobium-93 measured using the inverse
kinematics method", Proceedings of ND2016 International Conference on NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY
Oral Presentations[International Conference]
H. Wang, Spallation reaction study for fission products in nuclear waste: Cross section measurements for 137Cs, 90Sr and 107Pd on proton anddeuteron at different reaction energy, International conference on nuclear data and technology (ND2016), September 11-16, 2016, Brugge,
Belgium
H. Wang, Measurement of Spallation Cross Sections for 137Cs, 90Sr and 107Pd on Proton and Deuteron Using the Inverse Kinematic Method,
Asian Nuclear Prospects 2016 (ANUP2016), October 24-27, 2016, Sendai, Japan
H. Wang, Spallation Reaction Study for the Long-Lived Fission Products in Nuclear Waste: Cross Section Measurement for 137Cs, 90Sr and107
Pd Using the Inverse Kinematic Method, The Fifth International Symposium on Innovative Nuclear Energy Systems (INES-5), October
31-November 2, 2016, Tokyo Institute of Technology, Tokyo, Japan
S. Takeuchi, ”Status report of ImPACT experiments” , SAMURAI International Collaboration Workshop 2016, Kyushu
S. Kawase et al., "Cross section measurement of residues produced in proton- and deuteron-induced spallation reactions on 93Zr at
100MeV/u using the inverse kinematics method", ND2016: International Conference on Nuclear Data for Science and Technology, Bruges,
Belgium, Sep. 2016
S. Kawase et al., "Measurement of Isotopic Production Cross Sections through Proton- and Deuteron-Induced Spallation Reactions on 93Zr
and 93Nb using the Inverse Kinematics Method", The Fifth International Symposium on Innovative Nuclear Energy Systems (INES5), Tokyo,
Japan, Nov. 2016
[Domestic Conference]
H. Wang, Reaction study for fission products in nuclear waste: Cross section measurements for the spallation of 137Cs, 90Sr and 107Pd on
proton and deuteron, JPS meeting 2016 autumn, September 21-24, 2016, Miyazaki, Japanᖹᒣ᫭኱ࠊ79Se, 80Se ࡢࢡ࣮ࣟࣥศゎ཯ᛂ, 2017 ᖺ 3 ᭶ ᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍, ኱㜰Ṋෆ⪽ࠊ ࢡ࣮ࣟࣥศゎ཯ᛂ࡟ࡼࡿ 107,108Pd ࠾ࡼࡧ 93,94Zr ࡢග྾཰᩿㠃✚, 2016 ᖺ 3 ᭶᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍, ௝ྎᑿᓮ཭ᚿࠊ 238U ࡢ㣕⾜᰾ศ⿣࡟ࡼࡗ࡚⏕ᡂࡉࢀࡿ 107Pd,79Se ࡢ࢔࢖ࢯ࣐࣮ẚ 2016 ᖺ 3 ᭶᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍, ௝ྎᕝ℩㡴୍㑻, ௚ 11 ྡ, "㝧Ꮚ࣭㔜㝧Ꮚ࡟ᑐࡍࡿ 100 MeV/u 93Zr ධᑕ᰾◚○཯ᛂ࡟ࡼࡿྠ఩య⏕ᡂ᩿㠃✚ࡢ ᐃ", ᪥ᮏ≀⌮Ꮫ఍ 2015 ᖺ⛅Ꮨ኱఍, ኱㜰ᕷ, 2015 ᖺ 9 ᭶୰㔝ᩗኴ, ௚ 9 ྡ, ImPACT-RIBF Collaboration, ͆Ỉ⣲㺃㔜Ỉ⣲࡟ᑐࡍࡿ 100 MeV/u93Zr ཬࡧ 93Nb ධᑕ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃ͇,᪥ᮏཎᏊຊᏛ఍஑ᕞᨭ㒊➨ 34 ᅇ◊✲Ⓨ⾲ㅮ₇఍, O-02, ⚟ᒸᕷ, 2015 ᖺ 12 ᭶ᕝ℩㡴୍㑻, ௚ 9 ྡ, ImPACT-RIBF Collaboration,͆㏫㐠ືᏛⓗᡭἲࢆ⏝࠸ࡓ㝧Ꮚ㺃㔜㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃ (2)100
MeV/u93Zr ධᑕ཯ᛂ͇,᪥ᮏཎᏊຊᏛ఍ 2016 ᖺ᫓ࡢᖺ఍, 2J12, ௝ྎᕷ, 2016 ᖺ 3 ᭶୰㔝ᩗኴ, ௚ 9 ྡ, ImPACT-RIBF Collaboration,͆㏫㐠ືᏛⓗᡭἲࢆ⏝࠸ࡓ㝧Ꮚ㺃㔜㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃ (3)100
MeV/u93Nb ධᑕ཯ᛂ͇,᪥ᮏཎᏊຊᏛ఍ 2016 ᖺ᫓ࡢᖺ఍, 2J13, ௝ྎᕷ, 2016 ᖺ 3 ᭶୰㔝ᩗኴ, ௚ 9 ྡ, ImPACT-RIBF Collaboration, ͆93Zr ཬࡧ 93Nb ࡟ᑐࡍࡿ㝧Ꮚ㺃㔜㝧Ꮚධᑕ᰾◚○཯ᛂࡢྠ఩య⏕ᡂ࡟㛵ࡍࡿ◊✲͇, ᪥ᮏཎᏊຊᏛ఍஑ᕞᨭ㒊➨ 35 ᅇ◊✲Ⓨ⾲ㅮ₇఍,O-05, ᫓᪥ᕷ,2016 ᖺ 12 ᭶ㄶゼ⣧㈗, ௚ 3 ྡ,ImPACT-RIBF Collaboration,͆㝧Ꮚ㺃㔜㝧Ꮚ࡟ᑐࡍࡿ 91Y ᰾◚○཯ᛂࡢྠ఩య⏕ᡂ᩿㠃✚ ᐃ͇᪥ᮏཎᏊຊᏛ఍ 2017 ᫓ࡢᖺ఍, ᖹሯᕷ, 2017 ᖺ 3 ᭶
༓㈡ಙᖾࠊ┦㛵㝧Ꮚ᳨ฟჾࡢ㛤Ⓨࠊᖹᡂ 27 ᖺᗘ㧗࢚ࢿࣝࢠ࣮ຍ㏿ჾ◊✲ᶵᵓᢏ⾡◊✲఍ࠊKEK ࡘࡃࡤ࢟ࣕࣥࣃࢫࠊᖹᡂ 28 ᖺ 3 ᭶ 17 ᪥Ώ㎶ᖾಙࠊ㏫㐠ືᏛᡭἲࢆ⏝࠸ࡓ㝧Ꮚ࣭㔜㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃ (1) ᐇ㦂┠ⓗ࡜ᴫせࠊ᪥ᮏཎᏊຊᏛ఍᫓ࡢ኱఍ࠊ
ᮾ໭኱Ꮫࠊ2016 ᖺ 3 ᭶ᕝ℩㡴୍㑻ࠊ㏫㐠ືᏛᡭἲࢆ⏝࠸ࡓ㝧Ꮚ࣭㔜㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃ (2) 100 MeV/u 93Zr ᑕ཯ᛂࠊ᪥ᮏཎᏊຊᏛ఍
᫓ࡢ኱఍ࠊᮾ໭኱Ꮫࠊ2016 ᖺ 3 ᭶୰㔝ᩗኴࠊ㏫㐠ືᏛᡭἲࢆ⏝࠸ࡓ㝧Ꮚ࣭㔜㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃ (3) 100 MeV/u 93Nb ධᑕ཯ᛂࠊ᪥ᮏཎᏊຊᏛ఍
᫓ࡢ኱఍ࠊᮾ໭኱Ꮫࠊ2016 ᖺ 3 ᭶Ṋෆ⪽ࠊࢡ࣮ࣟࣥศゎ཯ᛂ࡟ࡼࡿ 107,108Pd ࠾ࡼࡧ 93,94Zr ࡢග྾཰᩿㠃✚ࠊ᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍ࠊᮾ໭Ꮫ㝔኱Ꮫࠊ2016 ᖺ 3 ᭶ᑿᓮ཭ᚿࠊ238U ࡢ㣕⾜᰾ศ⿣࡟ࡼࡗ࡚⏕ᡂࡉࢀࡿ 107Pd,79Se ࡢ࢔࢖ࢯ࣐࣮ẚࠊ᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍ࠊᮾ໭Ꮫ㝔኱Ꮫࠊ2016 ᖺ 3 ᭶
Posters Presentations[Domestic Conference]ᖹᒣ᫭኱ ୙Ᏻᐃ᰾ࡢศゎ཯ᛂࡢࡓࡵࡢⲴ㟁ࣇࣛࢢ࣓ࣥࢺ⏝࣍ࢻࢫࢥ࣮ࣉࡢ㛤Ⓨ 2016 ᖺ 3 ᭶᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍, ௝ྎ୰㔝ᩗኴࠊ㏫㐠ືᏛⓗᡭἲࢆ⏝࠸ࡓ㝧Ꮚ㺃㔜㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢṧ␃᰾⏕ᡂ᩿㠃✚ ᐃࠊ᪥ᮏཎᏊຊᏛ఍᫓ࡢ኱఍ࠊᮾ໭኱Ꮫࠊ ᖺ ᭶ᑿᓮ཭ᚿࠊ238U ࡢ㣕⾜᰾ศ⿣࡟ࡼࡗ࡚⏕ᡂࡉࢀࡿ 107Pd,79Se ࡢ࢔࢖ࢯ࣐࣮ẚࠊ2016 ᖺ 8 ᭶ ➨ 62 ᅇཎᏊ᰾୕⪅ⱝᡭኟࡢᏛᰯ
ᖹᒣ᫭኱ࠊ୙Ᏻᐃ᰾ศゎ཯ᛂࡢࡓࡵࡢⲴ㟁ࣇࣛࢢ࣓ࣥࢺ⢏Ꮚ㆑ู⏝࣍ࢻࢫࢥ࣮ࣉࡢ㛤Ⓨࠊ2016 ᖺ 8 ᭶ ➨ 62 ᅇཎᏊ᰾୕⪅ⱝᡭኟࡢᏛᰯ
ಟኈㄽᩥᅄ᪉⍞⣖ 93,94Zr ࡢࢡ࣮ࣟࣥศゎ཯ᛂ࡟ࡼࡿග྾཰᩿㠃✚ࡢ ᐃࠊᮾிᕤᴗ኱Ꮫ
୰㔝ᩗኴ, "Cross section measurement of isotope production in proton- and deuteron-induced reactions on 93Nb using the inverse kinematics
method" ஑ᕞ኱Ꮫ኱Ꮫ㝔⥲ྜ⌮ᕤᏛᗓඛ➃࢚ࢿࣝࢠ࣮⌮ᕤᏛᑓᨷ༞ᴗㄽᩥᖹᒣ᫭኱ Ꮫኈㄽᩥ㸸Ⲵ㟁ࣇࣛࢢ࣓ࣥࢺࡢ⢏Ꮚ㆑ู⏝࣍ࢻࢫࢥ࣮ࣉࡢ㛤Ⓨࠊᮾிᕤᴗ኱Ꮫ
ㄶゼ⣧㈗,"㝧Ꮚ࣭㔜㝧Ꮚ࡟ᑐࡍࡿ 93Zr ධᑕ᰾◚○཯ᛂ࡟ࡼࡿ᰾✀⏕ᡂᐇ㦂ࢹ࣮ࢱࡢணഛゎᯒ" ஑ᕞ኱ᏛᕤᏛ㒊࢚ࢿࣝࢠ࣮⛉Ꮫ⛉ ༞ᴗㄽᩥ,2016 ᖺ 2 ᭶- 383 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Nuclear Transmutation Data Research Group
Slow RI Data Team
1. Abstract
This team is in charge of the development of low-energy RI beams of long-lived fission fragments (LLFP) from the 238U by means ofdegrading the energy of beams produced by the BigRIPS fragment separator.

2. Major Research Subjects
Studies of the slowing down and purification of RI beams are the main subjects of the team. Developments of devices used for theslowing down of RI beams are also an important subject.

3. Summary of Research Activity
1) Study and development of the slowed-down methods for LLFP.
2) Development of the devices used for the slowing down.
3) Operation of the BigRIPS separator and supply the low energy LLFP beam to the experiment in which the cross sections of LLFP aremeasured at the low energy.
Members
Team Leader
Koichi YOSHIDA (– Aug. 31, 2016, concurrent: BigRIPS Team)Toshiyuki SUMIKAMA (Sep. 1, 2016 –)  

List of Publications & Presentations
Publications[Proceedings](Original Papers)
T. Sumikama, D.S. Ahn, N. Fukuda, N. Inabe, T. Kubo, Y. Shimizu, H. Suzuki, H. Takeda, N. Aoi, D. Beaumel, K. Hasegawa, E. Ideguchi, N.
Imai, T. Kobayashi, M. Matsushita, S. Michimasa, H. Otsu, S. Shimoura, T. Teranishi, “First test experiment to produce the slowed-down RI
beam with the momentum-compression mode at RIBF”, Nuclear Instruments and Methods in Physics Research B 367, 180-184, (2016).
Oral Presentations[International Conference etc.]
T. Sumikama, “Slowed-down RI beam produced from fast projectile fragment at RIBF”, Fragment separator expert meeting, Grand Rapids,
Michigan, USA, August 30 – September 1, 2016.
T. Sumikama, “Spectroscopy of neutron-rich isotope around 108Zr”, EURICA collaboration meeting, RIKEN, Wako, Saitama, Japan, September
6-7, 2016.
T. Sumikama et al., “Shape evolution of neutron-rich nuclei in the vicinity of 110Zr”, the 26th International Nuclear Physics Conference (INPC
2016), Adelaide, Australia, September 11-16, 2016.
[Domestic Conference]Ⅳ❟⪽அ ௚, “୰ᛶᏊ㐣๫ Mo ྠ఩యࡢᔂቯ᰾ศග”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰኱Ꮫ, ኱㜰, 2017 ᖺ 3 ᭶ 17 ᪥-20 ᪥ࠋ- 384 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Nuclear Transmutation Data Research Group
Muon Data Team
1. Abstract
Dr. Yoshio Nishina observed muons in the cosmic rays in 1937. The muon is an elementary particle belonging to the lepton group. The
PXRQKDVSRVLWLYHRUQHJDWLYHHOHFWULFFKDUJHDQGWKHOLIHWLPHLVȝVHF7KHnegative muon is 207 times heavier than the electron, andbehaves as a “heavy electron” in materials. The negative muon is caught by a nucleus (atomic number: Z) in materials to form a muonic atom,
and is then captured by the nucleus. The muon is combined with a proton in the nucleus to convert to a neutron and a neutrino. The muon
rest-mass energy is transferred to the nucleus with Z-1 to create the excited nuclear states. Emissions of neutrons andJ-rays are followed to
produce several isotopic nuclei with Z-1. From a viewpoint of the nuclear physic, the nuclear reaction is very unique and interesting. Highenergy is suddenly introduced in the nuclei associated with the conversion process of proton to the neutron and the neutrino. Manyexperiments have been so far reported, but the reaction mechanism is not yet well clarified. The research team aims at obtaining theexperimental data to understand the reaction mechanism of muon nuclear capture as well as at establishing the nuclear reaction theory.

2. Major Research Subjects(1) Experimental clarification on the reaction mechanism of nuclear muon capture(2) Establishment of the reaction theory on nuclear muon capture(3) Interdisciplinary application of the nuclear muon capture reaction

3. Summary of Research Activity
There are two experimental methods to study the reaction mechanism of muon nuclear capture. The first one is “muon in-beammethod”. The neutron and J-ray emissions from the excited states of nucleus with Z-1 are prompt events, and are observed by the “muonin-beam method” employing DC muon beam. The DC muon beam in Japan is obtained at the MuSIC (Muon Science Innovative Channel)
muon facility constructed at Research Center for Nuclear Physics (RCNP) at Osaka University. The second one is “muon activation
method” employing the pulsed muon beam. The unstable nuclei with Z-1 produced in the muon nuclear capture reaction make E +/- decay tostable nuclei. TheJ-rays associated with the E- decay from the unstable nuclei are observed, and the J-ray build-up (at beam-on) anddecay (at beam-off) curves are measured. Since the half-lives and the absolute decay branches of E--J decays are known, the production
ratio of the isotopic Z-1 nuclei is extracted from the curves. The pulsed muon beam is obtained at the RIKEN-RAL Muon Facility in the
UK and J-PARC MLF MUSE muon facility in Japan.

3.1 Test experiment at the MuSIC in early 2016
We made a test experiment of J-ray observation associated with the muon nuclear capture reaction on isotope enriched Pd targets(104,105,106,108,110Pd) at the MuSIC muon facility in the Osaka University. The DC muon beam is appropriate to observe the prompt neutron
and J-ray emissions. The primary proton beam intensity was 20 nA, and the capture solenoid magnets of the MuSIC were not fullyenergized because of the quench problem. The stopping muon number at Pd targets was 8 P-/second. Under such a severe experimental
condition, we successfully observed the promptJ-rays from APd (P-,xn Q) A-xRh reactions and the muonic K, L, M and N X-rays frommuonic Pd atoms.

3.2 Experiment at the MuSIC in late 2016
At the MuSIC muon facility, the radiation shield structure was improved around the production target, and the primary proton beam
intensity to the MuSIC was raised up to 1 PA from 20 nA. The muon intensity is expected to be increased by 50 times, and the experimental
data with good quality is obtained. In addition, we have installed a radiation shield wall at the end of the MuSIC beam line to reduce thebackground to the detection system. The wall consists of 30cm thick concrete block with 5 mm thick lead plate at the downstream side.
We performed the experiment concentrated to 108Pd (P-, xn Q)108-xRh reactions. Employing a newly built neutron spectrometer, the prompt
neutron and J-ray were measured to obtain the reaction branching ratios of
108Pd (P-,xn Q)108-xRh reactions.
For the neutron and J-ray measurement, we have constructed a neutron spectrometer named “Seamine”: Scintillator Enclosure Array for
Muon Induced Neutron Emission. The spectrometer consists of 21 liquid scintillation counters, 2 Ge J-ray detectors, 7 BaF2 counters. The
Pd target assembly including the muon beam counters and degraders is located at the center of the spectrometer. The neutron counter is a
BC-501A liquid scintillation counter with 20cm diameter and 5cm depth, and is connected to a 5” photo multiplication tube (H4144-01).
The total neuron detection efficiency is estimated 5%, where the distance is 4 cm between the neutron counter and the target. The Ge J-ray
detectors are placed at 10 cm form the target, and the typical detection efficiency is 0.5% for 200 keV J-ray. The BaF2 counters are locatedbeneath the target to obtain fastJ-ray signals associated with muon nuclear capture reaction, which give the time spectrum of J-rays
emitted from the compound nucleus.
Signals from the liquid scintillation counters for neutron detection are processed in a CAEN V1730B waveform digitizer (16channel,
14bit, 500M samplings/sec.). The neuron-J discrimination is performed on-line during the experiment, and the detailed analysis isconducted off-line after the experiment. The neutron energy spectrum is also constructed simultaneously. Signals from Ge J-ray detectors
are also processed in the CAEN V1730B waveform digitizer to obtain the energy and the time spectrum of J-rays associated with muon

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

nuclear capture reaction. Signals from the BaF2 counters and muon beam counters are sent to the CAEN V1730B waveform digitizer tomake fast timing signals. The accumulated data is about 6.6 TB in the experiment, and the detailed off-line analysis is now in progress.

3.3 Test experiment at J-PARC MLF MUSE
We made a test experiment for a few hours at D2 beam line in the J-APRC MLF MUSE muon facility. The 108Pd target was placed at thecenter of the vacuum chamber designed for muonic X-ray observation experiment. In spite of the long distance between the target and Ge Jray detectors, we successfully observed some J-rays originated from the E - decays of unstable Rh nuclei produced by 108Pd (P-, xn Q) 108x
Rh reactions. The J-ray yield build-up curve at beam-on and the decay curve at beam-off were obtained by the off-line data analysis. The
experimental technique for the muon activation method was established by the test experiment.
The experiments employing the muon activation method are scheduled in late 2017 at the RIKEN-RAL Muon Facility and J-PARC MLF
MUSE muon facility.

3.4 Comparison with theory
The muon activation method gives the reaction branching ratios. The muon in-beam method gives the neutron multiplicity distribution(reaction branching ratio) and the neutron energy spectrum. We will compare the experimental results with theoretical calculations of thestatistical compound nuclear model for the first step.

Members
Team Leader
Teiichiro MATSUZAKI

List of Publications & Presentations
Publications[ゎㄝࠊ࿴ᩥ]ᯇᓮ⚞ᕷ㑻͆ཎᏊຊศ㔝࡬ࡢ㈇࣑ࣗ࢜ࣥࡢᛂ⏝㸹㈇࣑ࣗ࢜ࣥ࡟ࡼࡿ᰾ኚ᥮࣭᰾⼥ྜ࣭᰾ศ⿣͇
ࠊ᪥ᮏཎᏊຊᏛ఍ㄅ Vol. 58 No.10 (2016)
P.612

Oral Presentations[International Conference etc.]ᯇᓮ⚞ᕷ㑻ࠊ“Nuclear Transmutation by Muon Nuclear Capture Reaction” Muonic X and Gamma ray Spectroscopy (MXG16)ࠊⲈᮌᕷࠊ
2016 ᖺ 9 ᭶ 27 ᪥ᩪ⸨ᓅᚿࠊᯇᓮ⚞ᕷ㑻ࠊḈ஭༤൤ࠊ᪂಴₶ࠊ௚ࠊ“Muon Nuclear Capture Reaction on Pd Isotopes” Muonic X and Gamma ray
Spectroscopy (MXG16)ࠊⲈᮌᕷࠊ2016 ᖺ 9 ᭶ 27 ᪥[Domestic Conference]ᯇᓮ⚞ᕷ㑻ࠊ“㈇࣑ࣗ࢜ࣥ࡟ࡼࡿཎᏊ᰾ኚ᥮”ࠊ㈇࣑ࣗ࢜ࣥ◊✲఍ࠊᮾᾏᮧࠊ2016 ᖺ 7 ᭶ 11 ᪥ᯇᓮ⚞ᕷ㑻ࠊ“ཎᏊຊศ㔝࡬ࡢ࣑ࣗ࢜ࣥᛂ⏝㸸ཎᏊ᰾ኚ᥮࡜ゐ፹᰾⼥ྜ”ࠊ᪥ᮏཎᏊຊᏛ఍ 2016 ᖺ᫓ࡢᖺ఍ࠊ௝ྎᕷࠊ2016 ᖺ 3 ᭶ 28 ᪥ᩪ⸨ᓅᚿࠊ“ᯇᓮ⚞ᕷ㑻ࠊḈ஭༤൤ࠊ᪂಴₶ࠊ௚ࠊRCNP MuSIC ࡟࠾ࡅࡿᏳᐃ Pd ྠ఩యࡢ μí ᤕ⋓⌧㇟ࡢ◊✲”ࠊ᪥ᮏ≀⌮Ꮫ఍➨㸵㸰ᅇᖺḟ኱఍㸦2017 ᖺ㸧ࠊ2017 ᖺ 3 ᭶ 17 ᪥≉チฟ㢪≉チࡢྡ⛠: ࠕ࣑ࣗ࢜ࣥ↷ᑕ࡟ࡼࡿᨺᑕᛶ≀㉁ࡢ〇㐀᪉ἲ࠾ࡼࡧࡑࡢ〇㐀≀㉁ࠖ
Ⓨ᫂⪅: ᯇᓮ⚞ᕷ㑻ࠊḈ஭༤൤ฟ㢪ே㸸⌮໬Ꮫ◊✲ᡤฟ㢪␒ྕ㸸JP2017/003226
ฟ㢪ᖺ᭶᪥㸸2017 ᖺ 1 ᭶ 30 ᪥ฟ㢪ᅜ㸸ᅜ㝿ฟ㢪ඹྠฟ㢪ே㸸࡞ࡋ- 386 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
High-Intensity Accelerator R&D Group
1. Abstract
The R&D group, consisting of two teams, develops elemental technology of high-power accelerators and high-power targets, aiming
at future applications to nuclear transmutations of long-lived fission product into short-lived nuclides. The research subjects aresuperconducting rf cavities for low-velocity ions, design of high-power accelerators, high-power target systems and related technologies.

2. Major Research Subjects(1) R&D of elemental technology of high-power accelerators and high-power targets

3. Summary of Research Activity(1) Based on the discussion with other research groups, R&D study of various accelerator components and elements is under progress.

Members
Group Director
Osamu KAMIGAITO (concurrent: Chief Scientist, Group Director,
Accelerator Gr.)

List of Publications & Presentations
Oral Presentations[Domestic Conference]ୖᇉእಟ୍ࠊ௚ࠊຍ㏿ჾࢩࢫࢸ࣒ࡢせ⣲ᢏ⾡㛤Ⓨࠊ᪥ᮏ≀⌮Ꮫ఍⛅Ꮨ኱఍ࠊᐑᓮ኱Ꮫࠊᮌⰼ࢟ࣕࣥࣃࢫࠊ2016 ᖺ 9 ᭶ 22 ᪥

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
High-Intensity Accelerator R&D Group
High-Gradient Cavity R&D Team
Abstract
We develop new components for accelerators dedicated for low-beta-ions with very high intensity. Specifically, we are designing andconstructing a cryomodule for superconducting linac efficient for acceleration of low-beta-ions. In parallel, we try to optimize an rf
acceleration system by making computer simulations for acceleration of very high intensity beams.

Major Research Subjects-Development of high-gradient cavites for low beta ions
-Development of power saving cryomodules

Summary of Research Activity
Development of highly efficient superconducting accelerator modules

Members
Team Leader
Naruhiko SAKAMOTO (concurrent: Cyclotron Team)
Research & Technical Scientists
Kazunari YAMADA (concurrent: Senior Technical Scientist,
Beam Dynamics & Diagnostics Team)
Kazutaka OZEKI (concurrent: Technical Scientist, Cyclotron
Team)

Yutaka WATANABE (concurrent: Senior Technical Scientist,
RILAC team)

Nishina Center Research Scientist
Kenji SUDA (concurrent: Cyclotron Team)
Postdoctoral Researchers
Xingguang LIU

List of Publications & Presentations
Oral Presentations[International Conference etc.]
Naruhiko Sakamoto, et al., Reduction and Resource Recycling of High-level Radioactive Wastes through Nuclear TransmutationDevelopment of Superconducting Quarter-Wave Resonators and their Cryomodules for Accelerator of Intense Low-ș Ion-BeamsࠊThe
5th International Conference on Asian Nuclear Prospects㸦ANUP2016㸧, Sendai, Japan, October 26 2016.
Kazutaka Ozeki, et al., Design and fabrication status of RIKEN SC-Linac cryomodule, 2017 TESLA Technology Collaboration meeting, East
Lansing, USA, February 21 2017
Kazutaka Ozeki et al., Cavity fabrication, processing and VT result of RIKEN QWR, 2017 TESLA Technology Collaboration meeting, East
Lansing, USA, February 22 2017
Posters Presentations[International Conference etc.]
Kazutaka Ozeki, et al., Cryomodule and power coupler for RIKEN Superconducting QWR, 28th Linear Accelerator Conference, East Lansing,USA, September 27 2016
Kazunari Yamada et al., First Vertical Test of Superconducting QWR Prototype at RIKEN, 28th Linear Accelerator Conference, East Lansing,USA, September 29 2016.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
High-Intensity Accelerator R&D Group
High-Power Target R&D Team
1. Abstract
The subjects of this team cover R&D studies with respect to target technology for the transmutation of the LLFPs.

2. Major Research Subjects(1) Liquid lithium target for production of neutron or muon
(2) Beam window without solid structure

3. Summary of Research Activity(1) Liquid lithium target for production of neutron or muon
(H. Okuno, N. Ikoma)(2) Beam window with solid structure(H. Imao, N. Ikoma)

Members
Team Leader
Hiroki OKUNO (concurrent: Deputy Group Director, Accelerator
Gr.)
Research and Technical Scientist
Kanenobu TANAKA (concurrent: Deputy Group Director, Safety Management Group)
Hiroshi IMAO (concurrent: Senior Research Scientist, Accelerator R&D Team)
Takashi NAGATOMO (concurrent: Technical Scientist, Ion Source Team)
Part-time Worker
Naoya IKOMA- 389 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Accelerator Group
1. Abstract
The accelerator group, consisting of seven teams, pursues various upgrade programs of the world-leading heavy-ion accelerator
facility, RI-Beam Factory (RIBF), to enhance the accelerator performance and operation efficiency. The programs include the R&D of
superconducting ECR ion source, charge stripping systems, beam diagnostic devices, radiofrequency systems, control systems, and beamsimulation studies. We are also maintaining the large infrastructure to realize effective operation of the RIBF, and are actively promoting
the applications of the facility to a variety of research fields.
Our primary mission is to supply intense, stable heavy-ion beams for the users through effective operation, maintenance, and upgradeof the RIBF accelerators and related infrastructure. The director members shown below govern the development programs that are not dealt
with by a single group, such as intensity upgrade and effective operation. We also promote the future plans of the RIBF accelerators alongwith other laboratories belonging to the RIBF research division.

2. Major Research Subjects(1) Intensity upgrade of RIBF accelerators (Okuno)(2) Effective and stable operation of RIBF accelerators (Fukunishi)(3) Operation and maintenance of infrastructures for RIBF (Kase)(4) Promotion of the future plan (Kamigaito, Fukunishi, Okuno)

3. Summary of Activity(1) The maximum intensity of the calcium beam reached 738 pnA at 345 MeV/u, which corresponds to 12.2 kW.
(2) The maximum intensity of the xenon beams reached 102 pnA at 345 MeV/u.
(3) The overall beam availability for the RIBF experiments has been kept above 90 % since 2014.
(4) The large infrastructure was properly maintained based on a well-organized cooperation among the related sections.
(5) An intensity-upgrade plan of the RIBF has been further investigated in coorperation with the experimental groups.

Members
Group Director
Osamu KAMIGAITO
Deputy Group Directors
Hiroki OKUNO (Intensity upgrade)
Nobuhisa FUKUNISHI (Stable and efficient operation)
Masayuki KASE (Energy-efficiency management)
Research Consultant
Tadashi FUJINAWA
Visiting Researchers
Akira GOTO (Yamagata Univ.)
Toshiyuki HATTORI (TIT)
Kensei UMEMORI (KEK)

Hirotaka NAKAI (KEK)
Eiji KAKO (KEK)

Assistant
Karen SAKUMA- 390 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Accelerator Group
Accelerator R&D Team
1. Abstract
We are developing the key hardware in upgrading the RIBF accelerator complex. Our primary focus and research is charge stripper
which plays an essential role in the RIBF accelerator complex. Charge strippers remove many electrons in ions and realize efficient
acceleration of heavy ions by greatly enhancing charge state. The intensity of uranium beams is limited by the lifetime of the carbon foil
stripper conventionally installed in the acceleration chain. The improvement of stripper lifetimes is essential to increase beam power
towards the final goal of RIBF in the future. We are developing the low-Z gas stripper. In general gas stripper is free from the lifetime
related problems but gives low equilibrium charge state because of the lack of density effect. Low-Z gas stripper, however, can give as highequilibrium charge state as that in carbon foil because of the suppression of the electron capture process. Another our focus is the upgradeof the world's first superconducting ring cyclotron.

2. Major Research Subjects(1) Development of charge strippers for high power beams (foil, low-Z gas)
(2) Upgrade of the superconducting ring cyclotron(3) Maintenance and R&D of the electrostatic deflection/inflection channels for the beam extraction/injection

3. Summary of Research Activity(1) Development of charge strippers for high power beams (foil, low-Z gas)
(Hasebe, H., Imao, H. Okuno., H.)
We are developing the charge strippers for high intensity heavy ion beams. We are focusing on the developments on carbon or
berrilium foils and gas strippers including He gas stripper.
(2) Upgrade of the superconducting ring cyclotron(Ohnishi, J., Okuno, H.)
We are focusing on the upgrade of the superconducting ring cyclotron.
(3) Maintenance and R&D of the electrostatic deflection/inflection channels for the beam extraction/injection(Ohnishi, J., Okuno, H.)
We are developing high-performance electrostatic channels for high power beam injection and extraction.㻌

Members
Team Leader
Hiroki OKUNO (concurrent: Deputy Group Director, Accelerator
Gr.)
Research & Technical Scientists
Hiroshi IMAO (Senior Research Scientist)

Jun-ichi OHNISHI (Senior Technical Scientist)

Nishina Center Technical Scientist
Hiroo HASEBE
Visiting Scientists
Andreas ADELMANN (PSI)
Hironori KUBOKI (KEK)

Noriyosu HAYASHIZAKI (TIT.)

Junior Research Associate
Naoya IKOMA (Nagaoka Univ. of Technology)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
H. Hasebe, H. Okuno, H. Kuboki, H. Imao, N. Fukunishi, M. Kase, O. Kamigaito, “Development of rotating beryllium disk stripper”, Journalof .Radioanalytical and Nuclear Chemistry, 305, 825 (2015).
[Proceedings](Original Papers) *Subject to Peer Review
H. Hasebe, H. Okuno, H. Kuboki, H. Imao, N. Fukunishi, M. Kase, O. Kamigaito, “History of Solid Disk Improvement for Rotating Charge
Stripper”, Proceeding of HIAT2015, Yokohama, Japan (2015) MOA1C01.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESOral Presentations[International Conference etc.]
H. Hasebe, H. Okuno, H. Kuboki, H. Imao, N. Fukunishi, M. Kase, O. Kamigaito, “History of Solid Disk Improvement for Rotating Charge
Stripper”, HIAT2015, Yokohama, Japan (2015) MOA1C01.
Posters Presentations[International Conference etc.]
H. Imao, H. Kuboki, H. Hasebe, O. Kamigaito, M. Kase, H. Okuno, “Operation of Gas Strippers at RIBF ; Thining Effect of High-Intensity Very
Heavy Ion Beams“ , HIAT2015, Yokohama, Japan (2015) MOPA32.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Accelerator GroupIon Source Team
1. Abstract
Our aim is to operate and develop the ECR ion sources for the accelerator-complex system of the RI Beam Factory. We focus on
further upgrading the performance of the RI Beam Factory through the design and fabrication of a superconducting ECR ion source for
production of high-intensity heavy ions.

2. Major Research Subjects(1)(2)

Operation and development of the ECR ion sources
Development of a superconducting ECR heavy-ion source for production of high-intensity heavy ion beams

3. Summary of Research Activity(1) Operation and development of ECR ion sources(T. Nakagawa, M. Kidera, Y. Higurashi, T. Nagatomo, and H. Haba)
We routinely produce and supply various kinds of heavy ions such as zinc and calcium ions for the super-heavy element searchexperiment as well as uranium ions for RIBF experiments. We also perform R&D’s to meet the requirements for stable supply ofhigh-intensity heavy ion beams.
(2) Development of a superconducting ECR ion source for use in production of a high-intensity heavy ion beam
(T. Nakagawa, J. Ohnishi, M. Kidera, Y. Higurashi, and T. Nagatomo)
The RIBF is required to supply heavy ion beams with very high intensity so as to produce RI’s and for super-heavy element searchexperiment. We have designed and are fabricating an ECR ion source with high magnetic field and high microwave- frequency, since theexisting ECR ion sources have their limits in beam intensity. The coils of this ion source are designed to be superconducting for the
production of high magnetic field. We are also designing the low-energy beam transport line of the superconducting ECR ion source.

Members
Team Leader
Takahide NAKAGAWA
Research & Technical Scientist
Takashi NAGATOMO (Technical Scientist)
Nishina Center Research Scientists
Masanori KIDERA, Yoshihide HIGURASHI
Special Postdoctoral Researcher
Tatsuya URABE (Apr. 1, 2014 –)List of Publications & Presentations
Publications[Proceedings](Original Papers) *Subject to Peer Review
A.Uchiyama, K. Ozeki, Y. Higurashi, M. Kidera, M. Komiyama, and T. Nakagawa, ‘Control system renewal for efficient operation in RIKEN 18
GHz electron cyclotron resonance ion source’, Rev. Sci. Instrum. 87(2016)02A722*
J. Ohnishi, Y. Higurashi, T. Nakagawa, ‘Progress in high-temperature oven development for 28 GHz electron cyclotron resonance ion source’,
Rev. Sci. Instrum. 87(2016)02A709*
Oral Presentations[International Conference etc.]
T. Nakagawa, ‘Optimization of Magnetic Field Distribution of RIKEN 28 GHz SC-ECRIS for Intense Beam Production’, ECRIS2016,
Aug.28–Sept 2, 2016, Busan, Korea
Y. Higurashi, ‘Recent development of RIKEN 28GHz ECRIS’, ECRIS2016, Aug.28–Sept 2, 2016, Busan, Korea
Posters Presentations[International Conference etc.]
T. Nagatomo, ‘Transverse Four-Dimension Phase-Space Distribution Measured by the Pepper-Pot Type Emittance Meter’, ECRIS2016,
Aug.28–Sept. 2, 2016, Busan, Korea- 393 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Accelerator GroupRILAC Team
1. Abstract
The operation and maintenance of the RIKEN Heavy-ion Linac (RILAC) have been carried out. There are two operation modes: one is
the stand-alone mode operation and the other is the injection mode operation. The RILAC has been used especially as an injector for the
RIKEN RI- Beam Factory accelerator complex. The RILAC is composed of the ECR ion source, the frequency-variable RFQ linac, six
frequency-variable main linac cavities, and six energy booster cavities (CSM).

2. Major Research Subjects(1) The long term high stability of the RILAC operation.
(2) Improvement of high efficiency of the RILAC operation.

3. Summary of Research Activity
The RILAC was started to supply ion beams for experiments in 1981. Thousands hours are spent in a year for delivering many kindsof heavy-ion beams to various experiments.
The RILAC has two operation modes: one is the stand-alone mode operation delivering low-energy beams directly to experiments andthe other is the injection mode operation injecting beams into the RRC. In the first mode, the RILAC supplies a very important beam to the
nuclear physics experiment of “the research of super heavy elements”. In the second mode, the RILAC plays a very important role as
upstream end of the RIBF accelerator complex.
The maintenance of these devices is extremely important in order to keep the log-term high stability and high efficiency of the RILAC
beams. Therefore, improvements are always carried out for the purpose of more stable and more efficient operation.

Members
Team Leader
Eiji IKEZAWA
Research & Technical Scientist
Yutaka WATANABE (Senior Technical Scientist)
Research Consultants
Masatake HEMMI

Toshiya CHIBA- 394 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Accelerator Group
Cyclotron Team
1. Abstract
Together with other teams of Nishina Center accelerator division, maintaining and improving the RIBF cyclotron complex. The
accelerator provides high intensity heavy ions. Our mission is to have stable operation of cyclotrons for high power beam operation.
Recently stabilization of the rf system is a key issue to provide 10 kW heavy ion beam.

2. Major Research Subjects(1) RF technology for Cyclotrons(2) Operation of RIBF cyclotron complex(3) Maintenance and improvement of RIBF cyclotrons(4) Single turn operation for polarized deuteron beams(5) Development of superconducting cavity

3. Summary of Research Activity
࣭Development of the rf system for a reliable operation
࣭Development of highly stabilized low level rf system
࣭Development of superconducting rebuncher cavity
࣭Development of the intermediate-energy polarized deuteron beams.

Members
Team Leader
Naruhiko SAKAMOTO
Research & Technical Scientist
Kazutaka OZEKI (Technical Scientist)
Nishina Center Research Scientist
Kenji SUDA

List of Publications & Presentations
Publications[Proceedings]
K. Yadomi, S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N.
Tsukiori, K. Suda, T. Dantsuka, M. Fujimaki, T. Fujinawa, N. Fukunishi, H. Hasebe, Y. Higurashi, E. Ikezawa, H. Imao, M. Kase, O.
Kamigaito, M. Kidera, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, M. Nakamura, J. Ohnishi, H. Okuno, K.
Ozeki, N. Sakamoto, A. Uchiyama, S. Watanabe, T. Watanabe, Y. Watanabe, K. Yamada, H. Yamasawa, “Status report of the operation of
the RIBF ring cyclotrons”, Proceedings of the 13th annual meeting of Particle Accelerator Society of Japan, Chiba (2016) p1339.
S. Ishikawa, K. Kobayashi, R. Koyama, J. Shibata, N. Tsukiori, T. Nakamura, M. Nishida, M. Nishimura, M. Hamanaka, S. Fukuzawa, K.
Yadomi, A. Uchiyama, K. Ozeki, J. Ohnishi, H. Okuno, M. Kase, O. Kamigaito, K. Kumagai, M. Komiyama, N. Sakamoto, K. Suda, T.
Nakagawa, M. Nagase, T. Nagatomo, N. Fukunishi, M. Fujimaki, T. Maie, K. Yamada, T. Watanabe, Y. Watanabe, Y. Ohshiro, Y. Kotaka, S.
Yamaka, “Status report on operation of RIKEN AVF cyclotron”, Proceedings of the 13th annual meeting of Particle Accelerator Society ofJapan, Chiba (2016) p1344.
Posters Presentations[Domestic Conference]
K. Yadomi, S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N.
Tsukiori, K. Suda, T. Dantsuka, M. Fujimaki, T. Fujinawa, N. Fukunishi, H. Hasebe, Y. Higurashi, E. Ikezawa, H. Imao, M. Kase, O.
Kamigaito, M. Kidera, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, M. Nakamura, J. Ohnishi, H. Okuno, K.
Ozeki, N. Sakamoto, A. Uchiyama, S. Watanabe, T. Watanabe, Y. Watanabe, K. Yamada, H. Yamasawa, “Status report of the operation of
the RIBF ring cyclotrons”, Proceedings of the 13th annual meeting of Particle Accelerator Society of Japan, Chiba (2016) FSP008.
S. Ishikawa, K. Kobayashi, R. Koyama, J. Shibata, N. Tsukiori, T. Nakamura, M. Nishida, M. Nishimura, M. Hamanaka, S. Fukuzawa, K.
Yadomi, A. Uchiyama, K. Ozeki, J. Ohnishi, H. Okuno, M. Kase, O. Kamigaito, K. Kumagai, M. Komiyama, N. Sakamoto, K. Suda, T.
Nakagawa, M. Nagase, T. Nagatomo, N. Fukunishi, M. Fujimaki, T. Maie, K. Yamada, T. Watanabe, Y. Watanabe, Y. Ohshiro, Y. Kotaka, S.
Yamaka, “Status report on operation of RIKEN AVF cyclotron”, Proceedings of the 13th annual meeting of Particle Accelerator Society ofJapan, Chiba (2016) FSP009.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Accelerator GroupBeam Dynamics & Diagnostics Team
1. Abstract
The cascaded cyclotron system at RIKEN RI Beam Factory (RIBF) requires not only strict matching of operation parameters but alsohigh stability of all the accelerator components in order to establish stable operation of the world’s most intense heavy-ion beams. Beam
Dynamics and Diagnostics Team is responsible for power supplies, beam instrumentation, computer control and beam dynamic of the RIBF
accelerator complex and strongly contributes to the performance upgrade of the RIBF.

2. Major Research Subjects(1) Extracting the best performance of the RIBF accelerator complex based on the precise beam dynamics study.
(2) Maintenance and developments of the beam instrumentation, especially non-destructive monitors.
(3) Upgrade of the computer control system of the RIBF accelerator complex.
(4) Maintenance and improvements of the magnets and power supplies.
(5) Upgrade of the existing beam interlock system for higher intensity beams.

3. Summary of Research Activity(1) High-intensity heavy-ion beams including 55-pnA uranium, 102-pnA xenon, 486-pnA krypton, and 740-pnA calcium beams have beenobtained.
(2) The world-first high-Tc SQUID beam current monitor has been developed.
(3) The bending power of the fixed-frequency Ring Cyclotron has been upgraded to 700 MeV. It enables us to accelerate 238U64+ ionsobtained by the helium gas stripper.
(4) An EPICS-based control system and a homemade beam interlock system have been stably operated. Replacements of the existing
legacy control system used in the old half of our facility is ongoing. Construction of the new control system for the new injector
RILAC2 was successfully completed, where the embedded EPICS system running on F3RP61-2L CPU module, developed by KEK and
RIKEN control group, was used.
(5) We replaced some dated power supplies of RIKEN Ring Cyclotron by new ones, which have better long-term stability than the old ones.
The other existing power supplies (~900) are stably operated owing to elaborate maintenance work.
(6) We have contributed to RILAC2 construction, especially in its beam diagnosis, control system, magnet power supplies, vacuum system,high-energy beam transport system etc.

Members
Team Leader
Nobuhisa FUKUNISHI (concurrent; Deputy Group Director,
Accelerator Gr.)Research & Technical Scientists
Masaki FUJIMAKI (Senior Technical Scientist)
Keiko KUMAGAI (Senior Technical Scientist)

Tamaki WATANABE (Senior Technical Scientist)
Kazunari YAMADA (Senior Technical Scientist)

Nishina Center Technical Scientists
Misaki KOMIYAMA

Akito UCHIYAMA

Special Postdoctoral Researcher
Part-time Workers
Makoto NAGASE
Visiting Scientists
Kenichi ISHIKAWA (Univ. of Tokyo)
Shin-ichiro HAYASHI (Hiroshima Int’l Univ.)

Hiromichi RYUTO (Kyoto Univ.)
Takuya MAEYAMA (Kitasato Univ.)

Visiting Technician
Jun-ichi ODAGIRI (KEK)- 396 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
Maeyama T., Fukunishi N., Ishikawa K.L., Furuta T., Fukasaku K., and Fukuda S., “Radiological properties of nanocomposite
Fricke gel dosimeters for heavy ion beams”, J o u r n a l o f Radiation Research 57, pp. 318–324 (2016)*.
Uchiyama A., Ozeki K., Higurashi Y., Kidera M., Komiyama M., and Nakagawa T., “Control System Renewal for Efficient
Operation in RIKEN 18 GHz Electron Cyclotron Resonance Ion Sourve”, Rev. Sci. Instrum. 87, 02A722 (2016)*.
Posters Presentations[International Conference etc.]
Komiyama M., Fukunishi N., Uchiyama A., “Recent Improvements to the RI Beam Factory Control System”, The 11th International
Workshop on Personal Computers and Particle Accelerator Controls (PCaPAC2016), Campinas, Brazil, October 2016,
WEPOPRPO11 (2016).
Uchiyama A., Komiyama M., Fujimaki M., Fukunishi N., “Integration of Standalone Control Systems into EPICS-based System at
RIKEN RIBF”, The 11th International Workshop on Personal Computers and Particle Accelerator Controls (PCaPAC2016),
Campinas, Brazil, October 2016, WEPOPRPO12 (2016).
[Domestic Conference]
Watanabe T., Fukunishi N., Inamori S., Kon K., “Sensitivity Improvement and Miniaturization of HTc-SQUID Beam Current Monitor”, 13th
Annual Meeting of Particle Accelerator Society of Japan, August 2016, Chiba, Japan, pp. 1127-1133 (2016).
Uchiyama A., Komiyama M., “An Attempt to Implement the Alive Monitoring System for Reliable EPICS-based Control System”, 13th
Annual Meeting of Particle Accelerator Society of Japan, August 2016, Chiba, Japan, pp. 664-667 (2016).
Nishimura M., Uchiyama A., Ohshiro Y., “Upgrade of HyperECR Ion Source Control System for System Integration at RIBF”, 13th
Annual Meeting of Particle Accelerator Society of Japan, August 2016, Chiba, Japan, pp. 660-663 (2016).

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Accelerator Group
Cryogenic Technology Team
1. Abstract
We are operating the cryogenic system for the superconducting ring cyclotron in RIBF. We are operating the helium cryogenic systemin the south area of RIKEN Wako campus and delivering the liquid helium to users in RIKEN. We are trying to collect efficiently gas
helium after usage of liquid helium.

2. Major Research Subjects(1)(2)

Operation of the cryogenic system for the superconducting ring cyclotron in RIBF
Operation of the helium cryogenic plant in the south area of Wako campus and delivering the liquid helium to users in Wako campus.

3. Summary of Research Activity(1)(2)

Operation of the cryogenic system for the superconducting ring cyclotron in RIBF
(Okuno, H., Dantsuka, T., Nakamura, M., Maie, T.)
Operation of the helium cryogenic plant in the south area of Wako campus and delivering the liquid helium to users in Wako campus.
(Dantsuka, T., Tsuruma, S., Okuno, H.).

Members
Team Leader
Hiroki OKUNO (concurrent: Deputy Group Director, Accelerator
Gr.)
Research & Technical Scientist
Masato NAKAMURA (Senior Technical Scientist)
Nishina Center Technical Scientist
Takeshi MAIE
Technical Staff I
Tomoyuki DANTSUKA
Part-time Worker
Shizuho TSURUMA- 398 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Accelerator Group
Infrastructure Management Team
1. Abstract
The RIBF facility is consisting of many accelerators and its infrastructure is very important in order to make an efficient operation of
RIBF project. We are maintaining the infrastructure of the whole system and to support the accelerator operation with high performance.
We are also concerning the contracts of gas- and electricity-supply companies according to the annual operation plan. The contracts should
be reasonable and also flexible against a possible change of operations. And we are searching the sources of inefficiency in the operationand trying to solve them for the high-stable machine operation.

2. Major Research Subjects
(1)
(2)
(3)

Operation and maintenance of infrastructure for RIBF accelerators.
Renewal of the old equipment for the efficient operation.
Support of accelerator operations.

Members
Team Leader
Masayuki KASE (concurrent;
Accelerator Gr.)

DeputyGroup

Director,

Research & Technical Scientists
Shu WATANABE (Senior Technical Scientist)
Research Consultant
Hideyuki YAMASAWA
Visiting Scientist
Hideshi MUTO (Tokyo Univ. of Sci. Suwa)- 399 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Instrumentation Development Group
1. Abstract
This group develops core experimental installations at the RI Beam factory. They are a slow-RI beam facility (SLOWRI), and highly
program specific facilities of SCRIT and Rare-RI Ring (R3). All were designed to maximize the research potential of the world's mostintense RI beams, made possible by the exclusive equipment available at the RI Beam Factory. While SLOWRI is under preparation forcommissioning, physics experiments conducted in storage rings have been just started at SCRIT and R3 facilities. Beam manipulation
techniques, such as a beam accumulation and a beam cooling, will be able to provide opportunities of new experimental challenges and thefoundation for future developments of RIBF.

2. Major Research Subjects(1) SCRIT Project(2) SLOWRI Project(3) Rear RI Ring Project

3. Summary of Research Activity
We are developing beam manipulation technology in carrying out above listed project. They are the high-quality slow RI beam
production (SCRIT and SLOWRI), the beam cooling and stopping (SCRIT and SLOWRI), and the beam accumulation technology (SCRIT
and R3). The technological knowhow accumulated in our projects will play a significant role in the next generation RIBF. Status and future
plan for each project is described in subsections. SCRIT is now under test experimental phase in which the angular distribution of scatteredelectrons from 132Xe isotopes has been successfully measured and the nuclear charge density distribution has been obtained. Electron
scattering off unstable nuclei is now under preparation for the first experiment in 2017. Rare RI Ring was commissioned in three-times
machine-study experiments, and we have demonstrated that the ring has an ability for precision mass measurement with the accuracy of theorder of 10 ppm. We will be able to try to measure masses of nuclei 74-78Ni in 2017-2018 and continuously make improvement in theaccuracy. Construction of the SLOWRI system has been almost completed in 2014. PALIS device was commissioned in 2015 and 2016,
and basic functions such as the RI-beam stopping in argon gas cell and the extraction with the gas flow were confirmed. Other devices are
now under setting up for the first commissioning.

Members
Group Director
Masanori WAKASUGIVisiting Scientist
Akira OZAWA (Univ. of Tsukuba)Student Trainees
Mitsuki HORI (Rikkyo Univ.)
Nobuaki UCHIDA (Rikkyo Univ.)

Shin-nosuke SASAMURA (Rikkyo Univ.)

List of Publications & Presentations
Publications and presentations for each project team are listed in subsections.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Instrumentation Development GroupSLOWRI Team
1. Abstract
SLOWRI is a universal low-energy RI-beam facility at RIBF that provides a wide variety of short-lived nuclei as high-purity andlow-emittance ion beams or stored ions in a trap, including a parasitic operation mode. The SLOWRI team develops and manages thefacility and performs high-precision spectroscopy experiments. The construction of the SLOWRI facility began in FY2013 andcommissioning work has been ongoing. Two major online prototype setups have been successfully tested. The first was a large
room-temperature gas cell with RF-carpet structure. With this setup, the hyperfine structure constants of all odd Be isotopes were precisely
measured by laser-microwave double resonance spectroscopy of trapped Be ions, followed by the first online mass measurement with amulti-reflection time-of-flight mass spectrograph (MRTOF) performed on 8Li+ ions. The second prototype is a medium-sized cryogenic
RF-carpet gas cell for the SHE-Mass project that aims to measure masses of trans-uranium elements at the GARIS-II facility. This
prototype showed that a traveling-wave RF-carpet works fine and the cryogenic gas cell dominantly provides doubly charged ions even for
Fr isotopes.

2. Major Research Subjects
(1)
(2)
(3)
(4)
(5)

Construction of stopped and low-energy RI-beam facility, SLOWRI.
Laser spectroscopy of trapped radioactive beryllium isotopes.
Development of a multi-reflection time-of-flight mass spectrograph for precision mass measurements of short-lived nuclei.
Development of collinear laser spectroscopy apparatus.
Development of parasitic slow RI-beam production method using resonance laser ionization.

3. Summary of Research Activity(1) Construction of stopped and low-energy RI-beam facility (SLOWRI)
Installation of SLOWRI began in FY2013. It consists of two gas catchers (RF Carpet gas cell and PALIS gas cell), magnetic mass
separators, a 50-m beam transport line, a beam cooler-buncher, an isobar separator, and a laser system. The RF Carpet gas cell will be
installed at the exit of the D5 dipole magnet of BigRIPS. This gas catcher comprises a large cryogenic He gas cell with a large travelingwave rf-carpet. It will convert main beams of BigRIPS to low-energy, low-emittance beams without any restrictions from the chemical
properties of the elements. The PALIS gas cell will be installed in the vicinity of the second focal plane slit of BigRIPS. It will provide
parasitic RI-beams from the ions normally lost in the slits during other experiments. In this gas catcher, thermalized RI quickly become
neutralized and will be selectively re-ionized by resonant laser radiations. These gas catchers have been tested off-line. The 50 m beamtransport line consists of four dipole magnets (SD1 to SD4), two focal plane chambers, 62 electrostatic quadrupole singlets, 11 electrostatic
quadrupole quartets (EQQ1 to EQQ11) and 7 beam profile monitors (BPM). SD1 and SD2, located right after the gas catchers, will be
used for isotope separation. After eliminating contaminant ions at the focal plane chamber, the low energy beam will be transported by a
FODO lattice structure with phase space matching using EQQs. The EQQs have multipole elements made of 16 rods on which various
potentials can be applied to produce 6-pole and 8-pole fields simultaneously, to compensate ion optical aberrations. This multipole element
can also produce dipole fields for steering and scanning the beam. The BPM have a classical cross-wire beam monitor as well as achannel electron multiplier with a pinhole collimator. Combining the scanning capability of the EQQs and the pinhole detector, we canobserve a beam profile even for a very low-intensity RI-beams. Off- and on-line commissioning is underway.
Based on test experiments with the prototype setups, the large RF-carpet gas cell contains a three stage rf-carpet structure: a gutter rf
carpet for collection of thermal ions in the cell into a small slit, a narrow §PP WUDYHOLQJ-wave rf-carpet for collection of ions from thegutter carpet and for transporting the ions toward the exit, and a small rf carpet for extraction from the gas cell. An offline test of the gutter
structure has shown a high collection efficiency of ions in the gas cell.
(2) Laser spectroscopy of trapped radioactive beryllium isotope ions
As a first application of the prototype SLOWRI setup, we applied hyperfine structure spectroscopy to the beryllium isotopes todetermine, in particular, the anomalous radius of the valence neutron of the neutron halo nucleus 11Be, and to determine the charge radii ofthese beryllium isotopes through laser-laser double resonance spectroscopy of laser-cooled ions. Laser cooling is an essential prerequisite
for these planned experiments. The first laser spectroscopy experiments for beryllium isotopes were performed to measure the resonancefrequencies of the 2s 2S1/2 - 2p 2P3/2 transition in 7Be+, 9Be+, 10Be+ and 10Be+ ions and the nuclear charge radii of these isotopes were
determined. The hyperfine structures of 11Be+ and 7Be+ ions were also performed using the laser-microwave double resonance spectroscopy
and the magnetic hyperfine constants of 7Be+ and 11Be+ ions were determined with accuracies of better than 10-7. A new combined-trap
setup for high-precision determination of nuclear g-factors of the odd Be isotopes using a superconducting Helmholtz magnet is underpreparation at the SLOWRI experimental area in collaboration with Ueno nuclear spectroscopy laboratory.
(3) Development of a multi-reflection TOF mass spectrograph for short-lived nuclei
The atomic mass is one of the most important quantities of a nucleus and has been studied by various methods since the early days ofmodern physics. From among many methods we have chosen a multi-reflection time-of-flight (MR-TOF) mass spectrometer. Slow RI
beams extracted from the RF ion-guide are bunched and injected into the spectrometer with a repetition rate of ~100 Hz. The spectrometerconsists of two electrostatic mirrors between which the ions travel back and forth repeatedly. These mirrors are designed such thatenergy-isochrononicity in the flight time is guaranteed during the multiple reflections while the flight time varies with the masses of ions. A- 401 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

mass-resolving power of 170,000 has been obtained within a 2 ms flight time for the 40K+ and 40Ca+ isobaric doublet. This mass-resolving
SRZHUVKRXOGDOORZGHWHUPLQDWLRQRILRQPDVVHVZLWKDQDFFXUDF\RI-7. An online mass measurement for the radioactive isotope 8Li has
been carried out at the prototype SLOWRI setup.
The MR-TOF mass spectrograph has been placed under the GARIS-II separator with the goal of direct mass measurements oftrans-uranium elements. A cryogenic gas catcher cell was placed at the focal plane box of GARIS-II and bunched low-energy heavy ion
beams were transported to the trap of MR-TOF. In online commissioning experiments using No isotopes, more than 30% extraction
efficiency from the cryogenic gas cell was achieved. In FY2016, mass measurements of more than 80 nuclides, including short-lived (T1/2 =10ms) isotopes of Ra and several isotopes of the trans-uranium elements Fm, Es, No and Md were performed at GARIS-II in collaboration with
the KEK Wako Nuclear Science Center and the Super Heavy Element Synthesis team of RIKEN. The highest precisions, achieved for Ga
isotopes, reached a level of 0.03 ppm. For most of the well-known nuclides, agreement with the literature mass values was found. However,discrepancies were found in some literature values derived from pre-1980 indirect measurements. This suggests that such indirect
measurements must be revised with comprehensive direct mass measurements. The masses of four isotopes of Es and Md were measured forthe first time, allowing for confirmation of the N = 152 shell closure in Md. Using these new mass data as anchor-points, the masses of sevenisotopes of super-heavy elements up to Mt were indirectly determined and comparisons with various nuclear mass models were performed.
(4) Development of collinear fast beam apparatus for nuclear charge radii measurements
The root-mean-square charge radii of unstable nuclei have been determined exclusively by isotope shift measurements of the opticaltransitions of singly-charged ions or neutral atoms by laser spectroscopy. Many isotopes of alkali, alkali-earth, and noble-gas elements inaddition to several other elements have been measured by collinear laser spectroscopy since these ions all have good optical transitions andare available at conventional ISOL facilities. However, isotopes of other elements, especially refractory and short-lived ones, have not been
investigated so far.
In SLOWRI, isotopes of all atomic elements will be provided as well collimated, mono-energetic ion beams. This should expand therange of nuclides available for laser spectroscopy. In the first years of the RIBF project, elements in the vicinity of Ni, such as Ni, Co, Fe,
Cr, Cu, Ga, and Ge are planned to be investigated. They all have possible optical transitions in the ground states of neutral atoms withpresently available laser systems. Some of them have so called recycling transitions, which enhance the detection probabilities noticeably.
Also, the multistep resonance ionization (RIS) method can be applied to the isotopes of Ni as well as those of some other elements. The
required minimum intensity for this method can be as low as 10 atoms per second.
An off-line mass separator and a collinear fast beam apparatus with a large solid-angle fluorescence detector was built previously. A
617 nm transition of the metastable Ar+ ion at 20 keV was measured with both collinear and anti-collinear geometry that allowed
determination of the absolute resonant frequency of the transition at rest with a relative accuracy of more than 10-8. A new setup is underpreparation at the SLOWRI experiment area in collaboration with the Ueno nuclear spectroscopy laboratory.
(5) Development of parasitic slow RI-beam production scheme using resonance laser ionization
More than 99.9% of RI ions produced in projectile fission or fragmentation are simply dumped in the first dipole magnet and the slits.
A new scheme, named PALIS, meant to rescue such precious RI using a compact gas catcher cell and resonance laser ionization, wasproposed as a part of SLOWRI. The thermalized RI ions in a gas cell filled with Ar gas can be quickly neutralized and transported to theexit of the cell by gas flow. Irradiation of resonance lasers at the exit ionizes neutral RI atoms efficiently and selectively. The ionized RI
ions can be further selected by a magnetic mass separator and transported to the SLOWRI experimental area for various experiments. The
resonance ionization scheme itself can also be a useful method to perform hyperfine structure spectroscopy of RI of many elements.
A prototype setup has been used to test resonance ionization schemes of several elements, extraction from the cell, and transport to ahigh-vacuum chamber. An online setup was fabricated in FY2013 and the first online commissioning took place in FY2015. It was
confirmed that the PALIS gas cell is not deleterious for BigRIPS experiments, and a reasonable amount of radioactive Cu isotopes wereextracted from the cell by gas flow. Mechanical problems discovered in the commissioning have been solved by modification of the gas
cell, bellows structure, and laser path. Next online commissioning is scheduled in October 2017.

Members
Team Leader
Michiharu WADA
Research & Technical Scientist
Takao KOJIMA (Senior Research Scientist)

Aiko TAKAMINE (concurrent; UENO laboratory)

Nishina Center Research Scientists
Tetsu SONODA

Kensuke KUSAKA (concurrent; BigRIPS Team)

Nishina Center Technical Scientist
Takeshi MAIE (concurrent; Cryogenic Technology Team)Special Postdoctoral Researcher
Yuta ITO
Part-time Workers
Shigeaki ARAI
Ichiro KATAYAMA

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Visiting Researcher
Mikael REPONEN (JSPS)
Visiting Scientists
Hans A SCHUESSLER (Texas A&M Univ.)
Hermann WOLLNIK (Univ. of Giessen)
Hideki IIMURA (JAEA)
Hideki TOMITA (Nagoya Univ.)

Klaus WENDT (Johannes Gutenberg Univ. Mainz)
Kunihiro OKADA (Sophia Univ.)
Volker SONNENSCHEIN (Nagoya Univ.)

Student Trainees
Naoki KIMURA (Sophia Univ.)
Takuma NOTO (Nagoya Univ.)
Yoshitaka ADACHI (Nagoya Univ.)

Takahide TAKAMATSU (Nagoya Univ.)
Daiki MATSUI (Nagoya Univ.)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
P. Schury, M. Wada, Y. Ito, D. Kaji, F. Arai, M. MacC ormick, I. Murray, H. Haba, S. Jeong, S. Kimura, H. Koura, H. Miyatake, K. Morimoto, K.
Morita, A. Ozawa, M. Rosenbusch, M. Reponen, P.-A. Söderström, A. Takamine, T. Tanaka, H. Wollnik, “First online multireflection
time-of-flight mass measurements of isomer chains produced by fusion-evaporation reactions: Toward identification of superheavy
elements via mass spectroscopy”, Physical Review C 95, 011305(R) (2017)*
T. Sonoda, T.Tsubota, M. Wada, I. Katayama, T.M. Kojima, M. Reponen, « A gas circulation and purification system for gas-cell-based
low-energy RI-beam production », Review of Scientific Instruments, 87 (2016) 065104.*
A Hamaker, M. Brodeur, J.M. Kelly, J. Long, C. Nicoloff, S. Syan, B.E. Schult, P. Schury, M. Wada, «Experimental investigation of the repelling
force from RF carpets », International Journal Mass Spectrometry, 404 (2016) 14-19.*[Proceedings](Original Papers) *Subject to Peer Review
A. Takamine, M. Wada, K. Okada, Y. Ito, P. Schury, F. Arai, I. Katayama, K. Imamura, Y. Ichikawa, H. Ueno, H. Wollnik, H.A. Schuessler,« Towards high precision measurements of nuclear g-factors for the Be isotopes », Nucl. Inst. Meth. B376 (2016) 307-310. *Y. Hirayama, Y.X. Watanabe, N. Imai, H. Ishiyama, S.C. Jeong, H.S. Jung, H. Miyatake, M. Oyaizu, S. Kimura, M. Mukai, Y.H. Kim, T.
Sonoda, M. Wada, M. Huyse, Yu. Kudryavtsev,P. van Duppen, « On-line experimental results of an argon gas cell-based laser ion source(KEK Isotope Separation System) », Nucl. Inst. Meth. B376 (2016) 52-56.*
M. Mukai, Y. Hirayama, H. Ishiyama, H.S. Jung, H. Miyatake, M. Oyaizu, Y.X. Watanabe, S. Kimura, A. Ozawa, S.C. Jeong, T. Sonoda,« Search for efficient laser resonance ionization schemes of tantalum using a newly developed time-of-flight mass spectrometer in KISS »,Nucl. Inst. Meth B376 (2016) 73-76.*
S. Kimura, H. Ishiyama, H. Miyatake, Y. Hirayama, Y.X. Watanabe, H.S. Jung, M. Oyaizu, M. Mukai, S.C. Jeong, A. Ozawa, « Developmentof the detector system for image-decay spectroscopy at the KEK Isotope Sepaator System », Nucl. Inst. Meth. B376 (2016) 338-340.*
Y. Hirayama, H. Miyatake, Y.X. Watanabe, N. Imai, H. Ishiyama, S.C. Jeong, H.S. Jung, M. Oyaizu, M. Mukai, S. Kimura, T. Sonoda, M.
Wada, Y.H. Kim, M. Huyse, Yu Kudryavtsev, P. van Duppen, « Deta-decay spectroscopy of r-process nuclei around N=126 », EPJ Web
Conf. 109 (2016) 08001, 1-6.*
Oral Presentations[International Conference etc.]
Y. Ito et al., « First online mass measurements of isobar chains via MRTOF-MS : Toward direct identification of SHE », International Nuclear
Physics Conference, Sept. 11-16, 2016, Adelaide, Australia.
P. Schury et al., « Gas Catcher Systems Status: SLOWRI/PALIS, SlowSHE, and KISS”, Fragment Separator Expert Meeting, Aug. 30 – Sept.
2, 2016, Grand Rapids, Michigan, USA.
T. Sonoda et al., “Parasitic low-energy RI-beam production using gas catcher and resonance ionization”, Stopping and Manipulation of Ionsand related topics (SMI-2016), June 8-10, 2016, IMP, Lanzhou, China.
[Domestic Conference]
M. Wada, « Possibility of comprehensive mass measurements of heavy elements », Symposium on Perspective of super heavy element
science, Mar. 17-20, Osaka, Japan.
M. Wada et al., “High precision nuclear spectroscopy with trapped radioactive ions”, The 2nd Cicily East Asia Workshop on Low-energy
Nuclear Physics”, June 26-28, 2016, RIKEN, Japan.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Instrumentation Development Group
Rare RI-ring Team
1. Abstract
Mass measurement is one of the most important contributions to a nuclear property research especially for short-lived unstable nuclei
far from the beta-stability line. In particular, a high-precision mass measurement for nuclei located around the r-process pass (rare-RI) is
required in nucleosynthesis point of view. We chose a method of isochronous mass spectrometry (IMS) to make a measurement timeshorter than 1 ms. Heavy-ion storage ring named “Rare-RI Ring (R3)” has been constructed until end of 2014 and commissioning
experiments were successfully performed in 2015. Our target performance in the mass determination is to achieve accuracy of the order of
1 ppm (~100 keV) even if we get only one event. Since an isochronism in R3 is established over a wide range of the momentum, rare-RIs
with a large momentum spread, 'p/p=㼼0.5 %, are acceptable. Another significant feature of the R3 system is an individual injection
scheme in which a produced rare-RI itself triggers the injection kicker. In the first commissioning experiment using primary 78Kr beam, we
demonstrated a high ability of R3 as a storage ring and succeed in establishing the individual injection scheme for the first time. In thesecond experiment using secondary beams of 36Ar and 35Cl, we successfully demonstrated mass determination by measuring revolution
time for both isotopes with the accuracy of ~20 ppm. In last year, we performed the third experiment using isotopes around 78Ge. We
successfully extracted several kinds of isotopes, 79As, 77Ga, 76Zn, and 75Cu from the R3 in the same setting and established the massmeasurement method. We are going to try to measure masses for isotopes around 78Ni region in near future.

2. Major Research Subjects(1) Developments of heavy-ion storage ring(2) Precision mass measurement for rarely produced isotopes related to r-process.

3. Summary of Research Activity
Since the lattice design of R3 is based on the cyclotron motion, it can provide an isochronism in a wide range of the momentum. We
expect a great improvement in mass resolution in IMS as long as the isochronous field is precisely formed in R3. Therefore, IMS using R3
is capable of both a high-precision measurement and a fast measurement. All the devices in R3 was designed under the assumption that anincoming beam has an energy of less than 200 MeV/u and a charge to mass ratio, m/q, of less than 3. The ring structure was designed with asimilar concept of a separate-sector ring cyclotron. It consists of six sectors and 4.02-m straight sections, and each sector consists of four
rectangular bending magnets. A radially homogeneous magnetic field is produced in the magnet, and a magnetic rigidity is 6.5 Tm at
maximum, for instance, 78Ni with the magnetic rigidity of 5.96 Tm. Two magnets at both ends of each sector are additionally equipped withten trim coils to form a precise isochronous magnetic field. For'p=0 particle, the circumference is 60.35 m and the betatron tunes are
Qx=1.21 and Qy=0.84 in horizontal and vertical directions, respectively. The momentum acceptance is 'p/p=s0.5 %, and the transverse
acceptances are 20Smmmrad and 10S mmmrad in horizontal and vertical directions, respectively.
Another performance required for R3 is to efficiently seize hold of an opportunity of the measurement for rare-RIs produced
unpredictably. We adopted an individual injection scheme in which the produced rare-RI itself triggers the injection kicker magnets. Fullactivation of the kicker magnetic field has to be completed within the flight time of the rare-RI from an originating point (F3 focal point in
BigRIPS) of the trigger signal to the kicker position in R3. We successfully developed an ultra-fast response kicker system working withthe repetition rate of 100 Hz.
Since R3 accumulates, in principle, only single ion, we need high-sensitive beam diagnostic devices in the ring, and they should beapplicable even for a single particle circulation. One of them is a cavity type of Schottky pick-up installed for tuning of isochronous field. A
resonance frequency is 171 MHz, a measured quality factor is about 1945, and shunt impedance is 190 k:. Another is a timing monitor,
which detects secondary electrons emitted from thin carbon foil placed on the accumulation orbit. The thickness of the foil will be 50
Pg/cm. The rare-RI with the energy of 200 MeV/u survives only for first 100 turns because of an energy loss at the foil.
In 2015, we had two times of commissioning experiments. In the first experiment, we use primary 78Kr36+ beam with the energy of
168 MeV/u. We succeeded in beam injection particle by particle in individual injection scheme, beam extraction after 700-Ps accumulation(~1860 turns), and measurements of the TOF from the injection to the extraction. It was demonstrated that R3 works well as a storage ring
and a single particle is certainly manipulated in this storage ring system. The individual injection scheme was established for the first timein the world. In addition, the Schottky pick-up monitored a single 78Kr36+ particle circulation with the measuring time of less than 10 ms.
That demonstrated that our pick-up is world most sensitive non-destructive monitor. In this experiment, we could tune completely the firstorder isochronism, but higher order components were remained, consequently, the 10-ppm accuracy of the isochronism was obtained. Moreprecise tuning is possible with reference the Schottky data. In the second experiment, we injected two isotopes, 36Ar and 35Cl, selected in
the secondary beams into the ring, in which the isochronism is tuned for 36Ar. It was obviously demonstrated that the mass of 35Cl relative
to 36Ar is determined by comparing the TOF values for both isotopes, and the accuracy was ~20 ppm, which is one-order less than ourtarget value of a few ppm. We found that the imperfection of isochronism significantly contributes to the time resolution of measured TOF
values.
In 2016, we performed the third commissioning experiment using unstable nuclei. In this experiment, the 5-ppm accuracy ofisochronism was obtained for the reference isotope 78Ge by adjusting the isochronism up to second order. In addition, we derived themasses of 79As, 77Ga, 76Zn, and 75Cu relative to 78Ge by determining its revolution time with beta correction. We found that not only theimperfection of isochronism but also the insufficient resolution of beta measurement significantly contributes to the mass resolution.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Detailed analysis is ongoing. In next time, we will try to improve the accuracy of isochronism and the beta measurement resolution. We
plan to try mass measurements for isotopes related r-process pass around 78Ni region after conducting the forth commissioning experiment.

Members
Team Leader
Masanori WAKASUGI (concurrent; Group Director,
Instrumentations Development Gr.)
Nishina Center Research Scientists
Yoshitaka YAMAGUCHI
Nishina Center Technical Scientists
Takeshi MAIE (concurrent; Cryogenic Technology Team)
Contract Researcher
Daisuke NAGAE (Spin-Isospin Lab.)Special Postdoctoral Researcher
Yasushi ABE
Postdoctoral Researcher
Fumi SUZAKI (Spin-Isospin Lab.)
Research Consultant
Akira NODA

List of Publications & Presentations
Publications[Journal](Review)
Y. Yamaguchi, M. Wakasugi, Y. Abe, F. Suzaki, D. Nagae, S. Omika, H. Miura, S. Naimi, Z. Ge, T. Yamaguchi, A. Ozawa, T. Uesaka, J.
Ohnishi, T. Kikuchi, M. Komiyama, K. Kumagai, A. Tokuchi, T. Fujinawa, T. Maie, H. Yamasawa, Y. Yanagisawa, T. Watanabe, Y.
Watanabe, and Y. Yano, “Construction of the rare-RI ring at RIKEN RI Beam” , Journal of Particle Accelerator of Japan, Vol.12, No.3,
132-141 (2015).
[Proceedings](Original Papers) *Subject to Peer Review
S. Suzuki, A. Ozawa, T. Moriguchi, Y. Ichikawa, M. Amano, D. Kamioka, Y. Tajiri, K. Hiraishi, T. Matsumoto, D. Nagae, Y. Abe, S. Naimi, T.
Yamaguchi, S. Omika, Z. Ge, N. Tadano, K. Wakayama, A. Kitagawa, S. Sato, “Development of secondary electron time detector for ion
beams”, Proceedings of Science, INPC2016 (2016) 111. *F. Suzaki, J. Zenihiro, Y. Abe, A. Ozawa, T. Suzuki, T. Uesaka, M. Wakasugi, K. Yamada, T. Yamaguchi, and Y. Yamaguchi, “Performance of aresonant Schottky pick-up for the Rare-RI Ring project”, JPS Conference Proceedings Vol.6 (2015) 030119.*T. Yamaguchi, “Present status of Rare-RI Ring facility at RIBF”, Physica Scripta T166 (2015) 014039.*
Y. Abe, Y. Yamaguchi, M. Wakasugi, T. Uesaka, A. Ozawa, F. Suzaki, D. Nagae, H. Miura, and T. Yamaguchi, “Isochronous field study of theRare-RI Ring”, Physica Scripta T166 (2015) 014039.*
F. Suzaki, J. Zenihiro, A. Ozawa, T. Suzuki, T. Uesaka, M. Wakasugi, K. Yamada, T. Yamaguchi, Y. Abe, and Y. Yamaguchi, “A resonant
Schottky pick-up for Rare-RI Ring at RIKEN”, Physica Scripta T166 (2015) 014059.*
Y. Yamaguchi, H. Miura, M. Wakasugi, Y. Abe, A. Ozawa, F. Suzaki, A. Tokuchi, T. Uesaka, T. Yamaguchi, and Y. Yano, “Fast-kicker system
for rare-RI ring” Physica Scripta T166 (2015) 014056.*
H. Miura, Y. Abe, Z. Ge, K. Hiraishi, Y. Ishikawa, I. Kato, T. Moriguchi, D. Nagae, S. Naimi, T. Nishimura, S. Omika, A. Ozawa, F. Suzaki, S.
Suzuki, “Performance of a fast kicker magnet for rare-RI ring”, Proceedings of the HIAT2015 (2015) 95-97.
F. Suzaki, Y. Abe, Z. Ge, D. Nagae, S. Naimi, T. Uesaka, T. Watanabe, M. Wakasugi, K. Yamada, Y. Yamaguchi, J. Zenihiro, Y. Yano, I. Kato,
H. Miura, T. Nishimura, S. Omika, T. Suzuki, N. Tadano, Y. Takeuchi, T. Yamaguchi, K. Hiraishi, Y. Ichikawa, T. Moriguchi, A. Ozawa, S.
Suzuki, and Y. Tajiri, “Performance of a resonant Schottky pick-up in the commissioning of rare-RI ring”, Proceedings of the HIAT2015(2015) 98-100.
Y. Yamaguchi, Y. Abe, and rare-RI ring collaborators, “The rare-RI ring at RIKEN RI Beam Factory”, Proceedings of the HIAT2015 (2015)
121-123.
T. Yamaguchi, T. Izumikawa, S. Miyazawa, T. Suzuki, F. Tokanai, H. Furuki, N. Ichihashi, C. Ichikawa, A. Kitagawa, T. Kuboki, S. Momota, D.
Nagae, M. Nagashima, Y. Nakamura, R. Nishikiori, T. Ohtsubo, A. Ozawa, K. Sato, S. Sato, and S. Suzuki, “Performance ofhigh-resolution position-sensitive detectors developed for storage-ring decay experiments”, Nuclear Instruments and Methods in Physics
Research Section B 317 (2013) 697-700.*
F. Suzaki, J. Zenihiro, T. Yamaguchi, A. Ozawa, T. Uesaka, M. Wakasugi, K. Yamada, Y. Yamaguchi, and rare-RI ring collaboration, “Design- 405 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

study of a resonant Schottky pick-up for the Rare-RI Ring project”, Nuclear Instruments and Methods in Physics Research Section B317
(2013) 636-639.*
D. Nagae, S. Okada, A. Ozawa, T. Yamaguchi, H. Suzuki, T. Moriguchi, Y. Ishibashi, S. Fukuoka, R. Nishikiori, T. Niwa, T. Suzuki, K. Sato, H.
Furuki, N. Ichihashi, S. Miyazawa, Y. Yamaguchi, T. Uesaka, and M. Wakasugi, “Time-of-flight detector applied to mass measurements in
Rare-RI Ring”, Nuclear Instruments and Methods in Physics Research Section B 317 (2013) 640-643.*
Y. Yamaguchi, M. Wakasugi, T. Uesaka, A. Ozawa, Y. Abe, T. Fujinawa, M. Kase, M. Komiyama, T. Kubo, K. Kumagai, T. Maie, D. Nagae, J.
Ohnishi, F. Suzaki, A. Tokuchi, Y. Watanabe, K. Yoshida, K. Yamada, T. Yamaguchi, H. Yamasawa, Y. Yanagisawa, J. Zenihiro, and Y.
Yano, “Construction of rare-RI ring at RIKEN RI Beam Factory”, Nuclear Instruments and Methods in Physics Research Section B 317(2013) 629-635.*
Yu.A. Litvinov, S. Bishop, K. Blaum, F. Bosch, C. Brandau, L.X. Chen, I. Dillmann, P. Egelhof, H. Geissel, R.E. Grisenti, S. Hagmann, M. Heil,
A. Heinz, N. Kalantar-Nayestanaki, R. Knoebel, C. Kozhuharov, M. Lestinsky, X.W. Ma, T. Nilsson, F. Nolden, A. Ozawa, R. Raabe, M.W.
Reed, R. Reifarth, M.S. Sanjari, D. Schneider, H. Simon, M. Steck, T. Stoehlker, B.H. Sun, X.L. Tu, T. Uesaka, P.M. Walker, M. Wakasugi,
H. Weick, N. Winckler, P.J. Woods, H.S. Xu, T. Yamaguchi, Y. Yamaguchi, and Y.H. Zhang, “Nuclear physics experiments with ion storagerings”, Nuclear Instruments and Methods in Physics Research Section B 317 (2013) 603-616.*
T. Yamaguchi, Y. Yamaguchi, and A. Ozawa “The challenge of precision mass measurements of short-lived exotic nuclei: Development of a
new storage-ring mass spectrometry”, Journal of Mass Spectrometry 349-350 (2013) 240-246.*
M. Wakasugi, and rare-RI ring collaborators, “Construction of the rare-RI ring at the RIKEN RI beam factory”, Proceedings of Cyclotron2013(2013) 477-481.
Y. Abe, D. Nagae, and rare-RI ring collaboration, “Developments of time-of-flight detectors for Rare-RI Ring”, Proceedings of the 12th Asia
Pacific Physics Conference 1 (2013) 013059.*
F. Suzaki, T. Yamaguchi, and rare-RI ring collaboration, “Storage-ring mass spectrometry in Japan”, Proceedings of the 12th Asia PacificPhysics Conference 1 (2013) 013058.*
M. Komiyama, A. Uchiyama, N. Fukunishi, M. Wakasugi, M. Hamanaka, and M. Nishimura, “Status of the RIKE RI Beam Factory Control
System”, Proceedings of ICALEPCS2013 (2013) 348-351.
Oral Presentations[International Conference etc.]
Y. Yamaguchi, M. Wakasugi, Y. Abe, D. Nagae, F. Suzaki, A. Ozawa, T. Uesaka, T. Yamaguchi, S. Naimi, and rare-RI ring collaborators,“The rare-RI ring at RIKEN RI beam factory”, International Nuclear Physics Conference (INPC2016), Adelaide, Australia, September(2016).
S. Suzuki, A. Ozawa, T. Moriguchi, Y. Ichikawa, M. Amano, D. Kamioka, Y. Tajiri, K. Hiraishi, T. Matsumoto, D. Nagae, Y. Abe, S. Naimi, T.
Yamaguchi, S. Omika, Z. Ge, N. Tadano, K. Wakayama, A. Kitagawa, S. Sato, “Development of secondary electron time detector for ion
beams”, International Nuclear Physics Conference (INPC2016), Adelaide, Australia, September (2016).
D. Nagae, S. Omika, F. Suzaki, Y. Abe, Y. Yamaguchi, S. Naimi, T. Yamaguchi, A. Ozawa, T. Uesaka, M. Wakasugi, and rare-RI ringcollaborators, “The rare-RI ring at RIKEN RI beam factory”, International Symposium on Neutron Star Matter (NSMAT2016), Sendai, Japan,
November (2016).
T. Yamaguchi, “RI beam experiments with storage rings -present and future-”, International Symposium on Interplay between Hadronic,
Nuclear and Atomic Physics, Shimoda, Japan, July (2016).
T. Yamaguchi, “Rare-RI Ring at RIKEN present status”, NUSTAR annual meeting, Darmstadt, Germany, February (2017).
Y. Yamaguchi, “The Rare RI Ring at RI Beam Factory”, 13th International Conference on Heavy Ion Accelerator Technology, Yokohama,Japan, September (2015).
Y. Yamaguchi, “Commissioning of the Rare-RI Ring at RI Beam Factory”, International Workshop on Beam Cooling and Related Topics,
Newport News, USA, October (2015).
Y. Yamaguchi, “Commissioning of the Rare-RI Ring at RI Beam Factory”, The 9th Japan-China Joint Nuclear Physics Symposium, Osaka,
Japan, November (2015).
Ozawa, and rare-RI ring collaboration, “Mass measurement with Rare-RI Ring at RIKEN”, SKLTP-BLTP Joint Workshop on Physics ofStrong Interaction, Guangxi, China, November (2015).
Y. Yamaguchi, and rare-RI ring collaboration, “Present status of Rare-RI Ring”, RIBF Users Meeting 2015, Wako, Japan, September (2015).
M. Wakasugi, and rare-RI ring collaboration, “The Rare-RI Ring Facility at RIKEN RI Beam Factory”, 2nd Conference on Advances inRadioactive Isotope Science, Tokyo, Japan, June (2014).
Y. Yamaguchi, and rare-RI ring collaboration, “Rare-RI Ring at RIKEN RI Beam Factory”, The 6th International Conference on Trapped
Charged Particles and Fundamental Physics, Takamatsu, Japan, Desember (2014).
Y. Abe, Y. Yamaguchi, M. Wakasugi, T. Uesaka, A. Ozawa, F. Suzaki, H. Miura, T. Yamaguchi, and Y. Yano, “Isochronous study of theRare-RI Ring”, 9th International Conference on Nuclear Physics at Storage Rings, St. Goar, Germany, September (2014).
Ozawa, “Mass measurement with Rare-RI Ring”, Science and Next Generation Experiments at FRIB and RIBF, Hawaii, USA, October(2014).
Y. Abe, “Mass measurement of RI with Rare-RI Ring at RIKEN”, Post-TCP PMM Workshop, Wako, Japan, December (2014).
M. Wakasugi, and rare-RI ring collaborators, “Construction of the Rare RI Ring (R3) at the RIKEN RI Beam Factory”, The 20th International
Conference on Cyclotrons and Their Applications, Vancouver, Canada, September (2013).
T. Yamaguchi, “Rare-RI Ring project in RIKEN”, Sino-German Symposium on (High precision experiments with stored exotic and stable
nuclei), Lanzhou, China, November (2013).
Y. Yamaguchi, and rare-RI ring collaboration, “Construction status of the Rare-RI Ring”, RIBF Users Meeting 2013, Wako, Japan, June(2013).
Ozawa, and rare-RI ring collaboration, “Rare-RI Ring for Mass measurements at RIBF”, The 12th International Symposium on Origin of
Matter and Evolution of Galaxies, Tsukuba, Japan, November (2013).

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)[Domestic Conference]ⱝᒣΎᚿࠊ㜿㒊ᗣᚿࠊኳ㔝ᑗ㐨ࠊୖᒸ኱㉳ࠊ໭ᕝᩔᚿࠊ㛗Ụ኱㍜ࠊ኱⏎⯗୍ᮁࠊᑠἑ㢧ࠊబ⸨┾஧ࠊ㕥ᮌఙྖࠊ㕥ᮌ೺ࠊྈ㔝ዉὠ⏕ࠊᒣཱྀ㈗அࠊࠕࣇ࢓࢖ࣂ࣮ࢩࣥࢳ࣮ࣞࢱ࡜ MPPC ࡟ࡼࡿ⡆᫆࡞㔜࢖࢜ࣥࣅ࣮࣒఩⨨᳨ฟჾࡢ㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ኱㜰ᕷࠊ3
᭶ (2017).
኱⏎⯗୍ᮁࠊᒣཱྀ㈗அࠊྈ㔝ዉὠ⏕ࠊ㕥ᮌ೺ࠊⱝᒣΎᚿࠊ㜿㒊ᗣᚿࠊୖᆏ཭ὒࠊNaimi SarahࠊGe ZhuangࠊὪᔘࡩࡳࠊ㛗Ụ኱㍜ࠊᒣཱྀ⏤㧗ࠊⱝᮡᫀᚨࠊኳ㔝ᑗ㐨ࠊᑠἑ㢧ࠊୖᒸ኱㉳ࠊ㕥ᮌఙྖࠊ᳃ཱྀဴᮁࠊ໭ᕝᩔᚿࠊబ⸨┾஧ࠊ ࠕ⛥ᑡ RI ࣜࣥࢢࡢࡓࡵࡢ⢏Ꮚ࿘ᅇࣔࢽࢱ࣮
ࡢ㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ኱㜰ᕷࠊ3 ᭶ (2017).
Ge ZhuangࠊNaimi Sarahࠊ㛗Ụ኱㍜ࠊ㜿㒊ᗣᚿࠊ኱⏎⯗୍ᮁࠊୖᆏ཭ὒࠊὪᔘࡩࡳࠊᒣཱྀ⏤㧗ࠊⱝᮡᫀᚨࠊⱝᒣΎᚿࠊᒣཱྀ㈗அࠊᑠἑ㢧ࠊ㕥ᮌఙྖࠊ᳃ཱྀဴᮁࠊ▮㔝Ᏻ㔜ࠊ ࠕDevelopment of a large area position sensitive (TOF) detector at the Rare RI Ring at RIBFࠖ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ኱㜰ᕷࠊ3 ᭶ (2017).
኱⏎⯗୍ᮁࠊᒣཱྀ㈗அࠊⱝᮡᫀᚨࠊᒣཱྀ⏤㧗ࠊ㜿㒊ᗣᚿࠊୖᆏ཭ὒࠊᑠἑ㢧ࠊὪᔘࡩࡳࠊ㕥ᮌ೺ࠊ㛗Ụ኱㍜ࠊ୕ᾆᐂࠊᰗ⃝ၿ⾜ࠊ ࠕ⛥ᑡ
RI ࣜࣥࢢಶูධᑕ᪉ᘧࡢࡓࡵࡢྠ㍈Ⳣࡢ㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍ 2015 ᖺ⛅Ꮨ኱఍ࠊ኱㜰ᕷࠊ9 ᭶ (2015).
㕥ᮌఙྖࠊᕷᕝࡺࡁ࡞ࠊ㛗Ụ኱㍜ࠊᑠἑ㢧ࠊ㜿㒊ᗣᚿࠊ᳃ཱྀဴᮁࠊᒸ⏣ಇ♸ࠊ▼ᶫ㝧Ꮚࠊᯇᮏᣅஓࠊ⏣ᑼⰾஅࠊᩪ⸨♸ከࠊ✄ⴥᡂ⣖ࠊἑ⏿ඞᶞࠊᒣཱྀ㈗அࠊ㕥ᮌ೺ࠊἙ㔝‽ᖹࠊᒣᮌࡉࡸ࠿ࠊᯇᮏ㐩ࠊᴮᮏᙬ஀ࠊ኱⏎⯗୍ᮁࠊ➉ෆຬ㈗ࠊຍ⸨㑳☻ࠊྈ㔝ዉὠ⏕ࠊすᮧᣅ┿ࠊ໭ᕝᩔᚿࠊబ⸨┾஧ࠊࠕRI ࣅ࣮࣒㣕⾜᫬㛫᳨ฟჾࡢ㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍ 2015 ᖺ⛅Ꮨ኱఍ࠊ኱㜰ᕷࠊ9 ᭶ (2015).
㜿㒊ᗣᚿࠊᒣཱྀ⏤㧗ࠊୖᆏ཭ὒࠊᑠἑ㢧ࠊὪᔘࡩࡳࠊᒣཱྀ㈗அࠊⱝᮡᫀᚨࠊ⛥ᑡ RI ࣜࣥࢢࢥ࣮ࣛ࣎ࣞࢩࣙࣥࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢᛶ⬟ホ౯ࠖ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍ࠊ௝ྎᕷࠊ3 ᭶ (2016).
Ὢᔘࡩࡳࠊ㜿㒊ᗣᚿࠊGe Zhuangࠊᖹ▼೺ኴ㑻ࠊᕷᕝࡺࡁ࡞ࠊຍ⸨㑳☻ࠊ୕ᾆᐂࠊ᳃ཱྀဴᮁࠊ㛗Ụ኱㍜ࠊNaimi Sarahࠊすᮧᣅ┿ࠊ኱⏎⯗୍ᮁࠊᑠἑ㢧ࠊ㕥ᮌఙྖࠊ㕥ᮌ೺ࠊྈ㔝ዉὠ⏕ࠊ⏣ᑼⰾஅࠊ➉ෆຬ㈗ࠊୖᆏ཭ὒࠊⱝᮡᫀᚨࠊΏ㑔⎔ࠊᒣ⏣୍ᡂࠊᒣཱྀ㈗அࠊᒣཱྀ⏤㧗ࠊ㖹ᘅ༑୕ࠊ▮㔝Ᏻ㔜ࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢࡓࡵࡢඹ㬆ࢩࣙࢵࢺ࣮࢟ࣆࢵࢡ࢔ࢵࣉࡢ࢜ࣥࣛ࢖ࣥᛶ⬟ホ౯ࠖ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍ࠊ
௝ྎᕷࠊ3 ᭶ (2016).
㕥ᮌఙྖࠊᑠἑ㢧ࠊᕷᕝࡺࡁ࡞ࠊ᳃ཱྀဴᮁࠊ⏣ᑼⰾஅࠊᖹ▼೺ኴ㑻ࠊᯇᮏᣅஓࠊ㛗Ụ኱㍜ࠊ㜿㒊ᗣᚿࠊNaimi SarahࠊGe Zhuangࠊᒣཱྀ㈗அࠊᯇᮏ㐩ࠊ㕥ᮌ೺ࠊ኱⏎⯗୍ᮁࠊ➉ෆຬ㈗ࠊຍ⸨㑳☻ࠊྈ㔝ዉὠ⏕ࠊすᮧᣅ┿ࠊ໭ᕝᩔᚿࠊబ⸨┾஧ࠊࠕ㉁㔞 ᐃ⏝㣕⾜᫬㛫᳨ฟჾࡢ
㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍ࠊ௝ྎᕷࠊ3 ᭶ (2016).
ᑠἑ㢧ࠊࠕPresent status of Rare-RI Ring project at RIBFࠖᐇ㦂࡜ほ ࡛ゎࡁ᫂࠿ࡍ୰ᛶᏊᫍࡢ᰾≀㉁ ➨ 4 ᅇ◊✲఍ࠊⴥᒣࠊ9 ᭶ (2015).
ᒣཱྀ㈗அࠊࠕ⛥ᑡ RI ࣜࣥࢢ࡟ࡼࡿ r ࣉࣟࢭࢫ᰾ࡢ ᐃィ⏬ࠖᏱᐂ᰾≀⌮㐃⤡༠㆟఍ ◊✲఍ࠊ୕㮚ᕷࠊ2 ᭶ (2016).
Naimi SarahࠊࠕMass measurement in connection to the nuclear astrophysicsࠖᏱᐂ᰾≀⌮㐃⤡༠㆟఍ ◊✲఍ࠊ୕㮚ᕷࠊ2 ᭶ (2016).
Ὢᔘࡩࡳࠊ㜿㒊ᗣᚿࠊNaimi Sarahࠊ୕ᾆᐂࠊᑠἑ㢧ࠊ㕥ᮌ೺ࠊୖᆏ཭ὒࠊⱝᮡᫀᚨࠊᒣ⏣୍ᡂࠊᒣཱྀ㈗அࠊᒣཱྀ⏤㧗ࠊ㖹ᘅ༑୕ࠊChen Xiangchengࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢඹ㬆ࢩࣙࢵࢺ࣮࢟ࣆࢵࢡ࢔ࢵࣉࡢ࢜ࣇࣛ࢖ࣥᛶ⬟ヨ㦂ࠖ᪥ᮏ≀⌮Ꮫ఍➨ 70 ᅇᖺḟ኱఍ࠊᮾிࠊ3 ᭶ (2015).
୕ᾆᐂࠊᒣཱྀ⏤㧗ࠊⱝᮡᫀᚨࠊ㜿㒊ᗣᚿࠊᑠἑ㢧ࠊὪᔘࡩࡳࠊᚨᆅ᫂ࠊୖᆏ཭ὒࠊᒣཱྀ㈗அࠊ㛗Ụ኱㍜ࠊᰗ⃝ၿ⾜ࠊ㕥ᮌ೺ࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢࡓࡵࡢ࢟ࢵ࣮࣐࢝ࢢࢿࢵࢺࡢ㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍➨ 70 ᅇᖺḟ኱఍ࠊᮾிࠊ3 ᭶ (2015).
㜿㒊ᗣᚿࠊ㛗Ụ኱㍜ࠊᒸ⏣ಇ♸ࠊᑠἑ㢧ࠊᒣཱྀ㈗அࠊ▼ᶫ㝧Ꮚࠊᩪ⸨♸ከࠊἑ⏿ඞᶞࠊ㕥ᮌ೺ࠊἙ㔝‽ᖹࠊᒣᮌࡉࡸ࠿ࠊᒣཱྀ⏤㧗ࠊୖᆏ཭ὒࠊⱝᮡᫀᚨࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢࣅ࣮࣒ࣔࢽࢱ࣮ࡢ㛤Ⓨࠖ᪥ᮏ≀⌮Ꮫ఍ 2013 ᖺ⛅Ꮨ኱఍ࠊ㧗▱ᕷࠊ9 ᭶ (2013).
Ὢᔘࡩࡳࠊ㖹ᘅ༑୕ࠊᑠἑ㢧ࠊ㕥ᮌ೺ࠊୖᆏ཭ὒࠊⱝᮡᫀᚨࠊᒣ⏣୍ᡂࠊᒣཱྀ㈗அࠊᒣཱྀ⏤㧗ࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢඹ㬆ࢩࣙࢵࢺ࣮࢟ࣆࢵ
ࢡ࢔ࢵࣉタィࡢࡓࡵࡢ㟁☢ሙࢩ࣑࣮ࣗࣞࢩࣙࣥࠖ᪥ᮏ≀⌮Ꮫ఍ 2013 ᖺ⛅Ꮨ኱఍ࠊ㧗▱ᕷࠊ9 ᭶ (2013).
Ὢᔘࡩࡳࠊ㖹ᘅ༑୕ࠊᑠἑ㢧ࠊ㕥ᮌ೺ࠊୖᆏ཭ὒࠊⱝᮡᫀᚨࠊᒣ⏣୍ᡂࠊᒣཱྀ㈗அࠊᒣཱྀ⏤㧗ࠊࠕ⛥ᑡ RI ࣜࣥࢢࡢඹ㬆ࢩࣙࢵࢺ࣮࢟ࣆࢵ
ࢡ࢔ࢵࣉࡢᛶ⬟ヨ㦂ࠖ᪥ᮏ≀⌮Ꮫ఍➨ 69 ᅇᖺḟ኱఍ࠊᖹሯᕷࠊ3 ᭶ (2014).
Posters Presentations[International Conference etc.]
S. Suzuki, A. Ozawa, Y. Ichikawa, T. Moriguchi, Y. Tajiri, K. Hiraishi, T. Matsumoto, D. Nagae, Y. Abe, S. Naimi, T. Yamaguchi, T. Suzuki, S.
Omika, Z. Ge, Y. Takeuchi, N. Tadano, I. Kato, T. Nishimura, A. Kitagawa, S. Sato, “Development of time-of-flight detector for massmeasurements of short-lived nuclei with the rare-RI ring”, International Symposium on Neutron Star Matter (NSMAT2016), Sendai, Japan,
November (2016).
H. Miura and rare-RI ring collaborators, “Development of a Fast Kicker System for Rare-RI RIng”, 13th International Conference on Heavy
Ion Accelerator Technology, Yokohama, Japan, September (2015).
F. Suzaki and rare-RI ring collaborators, “Performance of a resonant Schottky pick-up in the commissioning of Rare-RI Ring”, 13th
International Conference on Heavy Ion Accelerator Technology, Yokohama, Japan, September (2015).
Z. Ge and rare-RI ring collaborators, “Rare-RI Ring at RIKEN”, The 13th International Symposium on Origin of Matter and Evolution of
Galaxies, Beijing, China, June (2015).
Y. Yamaguchi, H. Miura, M. Wakasugi, Y. Abe, A. Ozawa, F. Suzaki, A. Tokuchi, T. Uesaka, T. Yamaguchi, and Y. Yano, “Fast-kicker system
for Rare-RI Ring”, 9th International Conference on Nuclear Physics at Storage Rings, St. Goar, Germary, September (2014).
F. Suzaki, J. Zenihiro, A. Ozawa, T. Suzuki, T. Uesaka, M. Wakasugi, K. Yamada, T. Yamaguchi, Y. Abe, and Y. Yamaguchi, “A resonant
Schottky pick-up for Rare-RI Ring at RIKEN”, 9th International Conference on Nuclear Physics at Storage Rings, St. Goar, Germany,
September (2014).
F. Suzaki, J. Zenihiro, A. Ozawa, T. Suzuki, T. Uesaka, M. Wakasugi, K. Yamada, T. Yamaguchi, Y. Abe, and Y. Yamaguchi, “Performanceof a resonant Schottky pick-up for Rare-RI Ring project”, 2nd Conference on Advances in Radioactive Isotope Science, Tokyo, Japan,
June (2014).
Y. Abe, and D. Nagae, “Developments of time-of-flight detectors for Rare-RI Ring”, The 12th Asia Pacific Physics Conference, Chiba, Japan,
July (2013).
T. Yamaguchi, F. Suzaki, and rare-RI ring collaborators, “Storage-ring mass spectrometry in Japan”, The 12th Asia Pacific Physics
Conference, Chiba, Japan, July (2013).
T. Yamaguchi, “Cherenkov light detection as a velocity selector for uranium fission products at intermediate energies”, 8th International
workshop on Ring imaging Cherenkov Detectors, Hayama, Japan, Desember (2013).
[Domestic Conference]ᒣཱྀ⏤㧗ࠊⱝᮡᫀᚨࠊ㜿㒊ᗣᚿࠊὪᔘࡩࡳࠊ⸨⦖㞞ࠊຍ℩ᫀஅࠊ㎸ᒣ⨾ဏࠊ⇃㇂᱇Ꮚࠊ┾ᐙṊኈࠊ㛗Ụ኱㍜ࠊ኱す⣧୍ࠊᑠἑ㢧ࠊୖᆏ཭ὒࠊ
Ώ㑓⿱ࠊᒣཱྀ㈗அࠊᒣ⃝⚽⾜ࠊᰗ⃝ၿ⾜ࠊ㖹ᘅ༑୕ࠊ▮㔝Ᏻ㔜ࠊࠕ⌮◊ RIBF ࡟࠾ࡅࡿ⛥ᑡ RI ࣜࣥࢢࡢ⌧≧ࠖ➨ 11 ᅇ᪥ᮏຍ㏿ჾᏛ఍ᖺ఍ࠊ㟷᳃ᕷࠊ8 ᭶ (2014).

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Instrumentation Development GroupSCRIT Team
1. Abstract
The SCRIT Electron Scattering Facility has been constructed at RIKEN RIBF. This aims at investigation of internal nuclear structure
for short-lived unstable nuclei by means of electron scattering. SCRIT (Self-Confining RI Ion Target) is a novel method to form internal
targets in an electron storage ring. This is a unique method for making electron scattering experiments for unstable nuclei possible.
Construction of the facility has been started in 2009. This facility consists of an electron accelerator (RTM), a SCRIT-equipped electron
storage ring (SR2), an electron-beam-driven RI separator (ERIS), and a detector system consisting of a high-resolution magnetic
spectrometer, drift chambers and trigger scintillators. Installation of all components in the facility was completed in 2015, and it is now
under comprehensive test experiment phase. In the test experiments, the luminosity was reached to 3㽢1027 /(cm2s) with the number of
injected ions of 3㽢108. In 2016, we successfully completed a measurement of diffraction of scattered electrons from 132Xe nuclei anddetermined the charge density distribution for the first time. The facility is now under setting up to move the first experiment for unstable
nuclei.

2. Major Research Subjects
Development of SCRIT electron scattering technique and measurement of the nuclear charge density distributions of unstable nuclei.

3. Summary of Research Activity
SCRIT is a novel technique to form internal target in an electron storage ring. Positive ions are three dimensionally confined in theelectron beam axis by transverse focusing force given by the circulating electron beam and applied electrostatic longitudinal mirror
potential. The created ion cloud composed of RI ions injected from outside works as a target for electron scattering. Construction of the
SCRIT electron scattering facility has been started in 2009. The electron accelerators RTM and the storage ring SR2 were successfullycommissioned in 2010. Typical accumulation current in SR2 is 250-300 mA at the energy range of 100-300 MeV that is required energy
range in electron scattering experiment. The SCRIT device was inserted in the straight section of SR2 and connected to an ISOL named
ERIS (Electron-beam-driven RI separator for SCRIT) by 20-m long low energy ion transport line. A buncher system based on RFQ linear
trap was inserted in the transport line to convert the continuous beam from ERIS to pulsed beam, which is acceptable for SCRIT. A detector
system consisting of a high-resolution magnetic spectrometer, drift chambers and trigger schintillators was constructed, and this has a solid
angle of 100 msr, energy resolution of 10-3, and the scattering angle coverage of 25-55 degrees. A wide range of momentum transfer,80-300 MeV/c, is covered by changing the electron beam energy from 150 to 300 MeV. Installation of all the components in the facility has
been completed in last year, and we are now under comprehensive test experiments.
We successfully measured a diffraction pattern in the angular distribution of scattered electron from 132Xe isotope at the electron beamenergy of 150MeV, 200MeV, and 300MeV, and derived the nuclear charge distribution by assuming two-parameters Fermi model for the
first time. At this time, luminosity was reached to 3㽢1027/(cm2s) at maximum and the averaged value was 1.2㽢1027/(cm2s) with thenumber of injected target ions of 3㽢108.
We are now under preparation for going to the experiments for unstable nuclei. There are some key issues for that. They are increasing
the intensity of the RI beams from ERIS, efficient DC-to-pulse conversion at the buncher, and effective suppression of the background inmeasurement of scattered electrons. RI beam intensity will be improved by upgrading the electron beam power from 10W to 60W,
increasing the contained amount of U in the target ion source, and some modifications in mechanical structure in the ion source. For
efficient DC-to-pulse conversion, we will innovate two-step bunching method, which is time compression at the buncher in combination
with pre-bunching at the ion source using grid action, and was already demonstrated in off-line test. Since one of significant contribution to
the background for scattered electron is scattering from massive structural objects around the trapping region originated from halocomponents of the electron beam, we will remodel the SCRIT electrodes. Luminosity for radioactive Xe isotopes is expected to be morethan 1026/(cm2s) after these improvements. Then, we will be able to start experiments for unstable nuclei. When further upgrading in the
RTM power planed to be 3kW will be achieved, we can extend the measurements to more exotic nuclei.

Members
Team Leader
Masanori WAKASUGI (concurrent; Group Director, Instrumentations Development Gr.)
Research & Technical Scientists
Masamitsu WATANABE (Senior Research Scientist)

Tetsuya OHNISHI (Senior Technical Scientist)

Nishina Center Research Scientist
Akitomo ENOKIZONO- 408 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Research Consultants
Tadaaki TAMAE
Shin-ichi ICHIKAWA

Masahiro HARA
Takashi EMOTO

Senior Visiting Scientist
Toshitada HORI (Hiroshima University)
Visiting Scientists
Shuo WANG (Shandong University)
Yuki HONDA (Tohoku University)
Kyo TSUKADA (Tohoku University)

Toshimi SUDA (Tohoku University)
Kazuyoshi KURITA (Rikkyo University)

Research Fellow
Mamoru TOGASAKI (Rikkyo University)
Student Trainees
Keita KASAMA (Tohoku University)
Kazuki NAMBA (Tohoku University)

Mitsuki HORI (Rikkyo University)
Nobuaki UCHIDA (Rikkyo University)

List of Publications & Presentations
Publications[Journals]
K. Tsukada, A. Enokizono, T. Ohnishi, K. Adachi, T. Fujita, M. Hara, M. Hori, T. Hori, S. Ichikawa, K. Kurita, K. Matsuda, T. Suda, T. Tamae,
M. Togasaki, M. Wakasugi, M. Watanabe, and K. Yamada, “First Elastic Electron Scattering from 132Xe at the SCRIT Facility”, PhysicalReview Letters 118, 262501, 27 June (2017)
T. Suda and Haik Simon, “Prospects for electron scattering on unstable, exotic nuclei”, Progress in Particle and Nuclear Physics, in press(2017)[Proceedings](Original Papers) *Subject to Peer Review
M. Togasaki, K. Kurita, K. Yamada, R. Toba, M. Hara, T. Ohnishi, and M. Wakasugi, “Development of a buffer-gas-free buncher for low energy
RI ion beam”, HIAT2015 proceedings, 253 (2015).
T. Ohnishi, S. Ichikawa, and M. Wakasugi, “Electron-beam-driven RI separator for SCRIT at RIKEN RI Beam Factory”, HIAT2015
proceedings, 194 (2015).
T. Ohnishi, A. Enokizono, M. Hara, T. Hori, S. Ichikawa, K. Kurita, S. Matsuo, T. Suda, T. Tamae, M. Togasaki, K. Tsukada, T. Tsuru, S. Wang,
S. Yoneyama, and M. Wakasugi, “The SCRIT electron scattering facility project at RI Beam Factory”, Physca Scripta, T166 , 014071(2015).*
T. Suda, A. Enokizono, M. Hara, Y. Haraguchi, S. Ichikawa, K. Kurita, S. Matsuo, T. Ohnishi, T. Tamae, M. Togasaki, K. Tsukada, T. Tsuru, S.
Wang, S. Yoneyama, and M. Wakasugi, “SCRIT Electron Scattering Facility”, JPS Conf. Proc. 6, 030100 (2015).*
Oral Presentations[International Conference etc.]
A. Enokizono, K. Adachi, T. Fujita, M. Hara, M. Hori, T. Hori, S. Ichikawa, K. Kasama, K. Kurita, K. Namba, T. Ohnishi, S. Sasamura, T. Suda,
T. Tamae, K. Tsukada, M. Togasaki, N. Uchida, M. Wakasugi, S. Wang, M. Watanabe, K. Yamada, “Results of the first physics experimentwith 132Xe and 208Pb targets at the SCRIT facility”, ARIS2017, Keystone, Colorado, May 30th, (2017)
A. Enokizono, K. Adachi, T. Fujita, M. Hara, M. Hori, T. Hori, S. Ichikawa, K. Kasama, K. Kurita, K. Nam
T. Suda, T. Tamae, K. Tsukada, M. Togasaki, N. Uchida, M. Wakasugi, M. Watanabe, K. Yamada, "The Performance Of The Scrit Detectors
For Electron-RI Scattering Experiment", International Nuclear Physics Conference (INPC2016), Adelaide Convention Centre, Australia,
Data: September 11-16, (2016).
T Ohnishi, M. Hara, T. Hori, S. Ichikawa, M. Watanabe, M. Wakasugi, K. Adachi, A. Enokizono, T. Fujita, M. Hori, S. Sasamura, M. Togasaki,
N. Uchida, K. Yamada, K. Kurita, K. Kasama, K. Namba, K. Tsukada, T. Tamae, T. Suda, S. Wang, T. Kikuchi, “The SCRIT Electron
Scattering Facility at the Riken RI Beam Factory”, International Nuclear Physics Conference (INPC2016), Adelaide Convention Centre,
Australia, Data: September 11-16, (2016).
K. Tsukada, K. Kasama, K. Namba, T. Suda, T. Tamae, M. Hara, T. Hori, S. Ichikawa, T. Ohnishi, M. Wakasugi, M. Watanabe, K. Adachi, A.
Enokizono, T. Fujita, M. Hori, K. Kurita, S. Sasamura, M. Togasaki, N. Uchida, K. Yamada, “First result from SCRIT electron scattering
facility:Charge density distribution of 132Xe”, International Nuclear Physics Conference, Adelaide Convention Centre, Australia, September
11-16, (2016).
K. Kurita, “How SCRIT came into reality”, International Symposium on Modern technique and its Outlook in Heavy Ion Science (MOTO16),
Rikkyo University, Tokyo, Japan, June (2016).
T. Suda, “SCRIT electron scattering facility : present status and future perspectives”, Neutron Skin of Nuclei, Mainz, Germany, May 17 – 27,(2016).
T. Suda, “Electron scattering off short-lived nuclei at SCRIT facility”, Seminar at GANIL, CAEN, France. April 29, 2016.
K. Tsukada, “Physics program with SCRIT”, Electron-radioactive ion collisions : theoretical and experimental challenges, Saclay, France,
April 25 – 27, (2016).
T. Suda, “Future perspectives of the SCRIT facility”, Electron-radioactive ion collisions : theoretical and experimental challenges, Saclay,
France, April 25 – 27, (2016).
M. Wakasugi, “The SCRIT Facility at RIKEN”, Int. Workshop on Electron Radioactive Collision, Apr. 25-27, CEA Saclay, France (2016).
M. Wakasugi, T. Ohnishi, M. Watanabe, S. Ichikawa, M. Hara, T. Hori, M. Togasaki, K. Yamada, T. Fujita, K. Adachi, M. Hori, A, Enokizono,- 409 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESK. Kurita, K. Tsukada, T. Tamae, and T. Suda, “Current status of electron-RI collision project at RIKEN“, Int. Workshop on Beem Coolingand Related Topics COOL15, Sep.28-Oct.2, JLab Newport News, Virginia, USA (2015).
T. Ohnishi, A. Enokizono, M. Hara, T. Hori, S. Ichikawa, K. Kurita, S. Matsuo, T. Suda, T. Tamae, M. Togasaki, K. Tsukada, T. Tsuru, S. Wang,
S. Yoneyama, and M. Wakasugi, “The SCRIT electron scattering facility project at RI Beam Factory”, 9th Int. Conf. on Nuclear Physics at
Storage Ring, Sep.28-Oct.2, Schloss Rheinfels, St. Goar, Germany (2015).
[Domestic Conference]ᒣ⏣⪔ᖹ㻘㻌 ኱すဴဢ㻘㻌 ᰩ⏣࿴ዲ㻘㻌 ᡞ䜿ᓮ⾨㻘㻌 㫽⩚൉ኴ㻘㻌 ཎ㞞ᘯ㻘㻌 Ώ㑔ṇ‶㻘㻌 ⱝᮡᫀᚨ㻌 㻿㻯㻾㻵㼀㻌 ᐇ㦂䛾䛯䜑䛾䜲䜸䞁䝡䞊䝮䝞䞁䝏䝱䞊䛾㛤Ⓨ䇿㻘㻌 ᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸኱㜰኱Ꮫ䚸኱㜰㻔㻞㻜㻝㻣㻕㻚㻌⸨⏣ᓧᗈ㻘㻌 ㊊❧Ụ௓㻘㻌 ᕷᕝ㐍୍㻘㻌 ෆ⏣ಙ᫛㻘㻌 ᴮᅬ᫛ᬛ㻘㻌 ኱すဴဢ㻘㻌 ➟㛫᱇ኴ㻘㻌 ᰩ⏣࿴ዲ㻘㻌 ➲ᮧ⸄அ௓㻘㻌 㡲⏣฼⨾㻘㻌 ⋢Ụᛅ᫂㻘㻌 ሯ⏣ᬡ㻘㻌 ᡞ䞄ᓮ⾨㻘㻌
༡Ἴ࿴ᕼ㻘㻌 ཎ㞞ᘯ㻘㻌 ᇼ฼໷㻘㻌 ᇼ඘ᕼ㻘㻌 ᯇ⏣୍⾨㻘㻌 ᒣ⏣⪔ᖹ㻘㻌 ⱝᮡᫀᚨ㻘㻌 Ώ㑔ṇ‶㻘㻌 䇾㟁Ꮚ⵳✚䝸䞁䜾䛻䛚䛡䜛㟁Ꮚᩓ஘ᐇ㦂䛾ไື㍽ᑕ䜢⏝䛔䛯䝹䝭䝜䝅䝔䜱 ᐃ䇿㻘㻌 ᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸኱㜰኱Ꮫ䚸኱㜰㻔㻞㻜㻝㻣㻕㻚㻌ሯ⏣ᬡ䚸㊊❧Ụ௓䚸ᕷᕝ㐍୍䚸ᴮᅬ᫛ᬛ䚸኱すဴဢ䚸➟㛫᱇ኴ䚸ᰩ⏣࿴ዲ䚸➲ᮧ⸄அ௓䚸㡲⏣฼⨾䚸⋢Ụᛅ᫂䚸ᡞ䜿ᓮ⾨䚸༡Ἴ࿴ᕼ䚸ཎ㞞ᘯ䚸⸨⏣ᓧᗈ䚸ᇼ฼໷䚸ᇼ඘ᕼ䚸ᯇ⏣୍⾨䚸ᒣ⏣⪔ᖹ䚸ⱝᮡᫀᚨ䚸Ώ㑔ṇ‶䚸䇿㻿㻯㻾㻵㼀ἲ䜢⏝䛔䛯㻝㻟㻞㼄㼑䛾㟁Ⲵศᕸ ᐃ䇿㻘㻌 ᪥ᮏ≀⌮Ꮫ఍䚸䠕᭶䚸ᐑᓮ኱Ꮫ䚸ᐑᓮ㻔㻞㻜㻝㻢㻕㻚㻌⸨⏣ᓧᗈ㻘㻌 ㊊❧Ụ௓㻘㻌 ᕷᕝ㐍୍㻘㻌 ᴮᅬ᫛ᬛ㻘㻌 ኱すဴဢ㻘㻌 ᰩ⏣࿴ዲ㻘㻌 㡲⏣฼⨾㻘㻌 ⋢Ụᛅ᫂㻘㻌 ሯ⏣ᬡ㻘㻌 ᡞ䞄ᓮ⾨㻘㻌 ཎ㞞ᘯ㻘㻌 ᇼ฼໷㻘㻌 ᇼ඘ᕼ㻘㻌 ᯇ⏣୍⾨㻘㻌 ᒣ⏣⪔ᖹ㻘㻌 ⱝᮡᫀᚨ㻘㻌 Ώ㑔ṇ‶㻘㻌 䇾㻿㻯㻾㻵㼀㻌 ἲ䜢⏝䛔䛯㻌 㼄㼑㻌 ྠ఩యᶆⓗ䞉㟁Ꮚᩓ஘ᐇ㦂䛻䛚䛡䜛㻌 䝹䝭䝜䝅䝔䜱 ᐃ䇿㻘㻌 ᪥ᮏ≀⌮Ꮫ఍䚸䠕᭶䚸ᐑᓮ኱Ꮫ䚸ᐑᓮ㻔㻞㻜㻝㻢㻕㻚㻌ሯ⏣ᬡ䚸㊊❧Ụ௓䚸ᕷᕝ㐍୍䚸ᴮᅬ᫛ᬛ䚸኱すဴဢ䚸ᰩ⏣࿴ዲ䚸㡲⏣฼⨾䚸⋢Ụᛅ᫂䚸Ỉὶ㍤᫂䚸ᡞ䜿ᓮ⾨䚸ཎ㞞ᘯ䚸⸨⏣ᓧᗈ䚸ᇼ฼໷䚸ᇼ඘ᕼ䚸ᯇ⏣୍⾨䚸ᒣ⏣⪔ᖹ䚸ⱝᮡᫀᚨ䚸Ώ㑔ṇ‶䚸䇿㻿㻯㻾㻵㼀 ἲ䜢⏝䛔䛯 㼄㼑 ྠ఩యᶆⓗ䛻䛚䛡䜛㟁Ꮚᩓ஘䛾ゅᗘศᕸ ᐃ䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸ᮾ໭Ꮫ㝔኱䚸௝ྎ䠄㻞㻜㻝㻢䠅㻚㻌
ᴮᅬ᫛ᬛࠊ㊊❧Ụ௓ࠊᕷᕝ㐍୍ࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㡲⏣฼⨾ࠊ⋢Ụᛅ᫂ࠊሯ⏣ᬡࠊỈὶ㍤᫂ࠊᡞࢣᓮ⾨ࠊཎ㞞ᘯࠊ⸨⏣ᓧᗈ䚸ᇼ฼໷䚸ᇼ඘ᕼ䚸ᯇ⏣୍⾨䚸ᒣ⏣⪔ᖹ䚸ⱝᮡᫀᚨ䚸Ώ㑔ṇ‶䚸䇿㻿㻯㻾㻵㼀 ἲ䜢⏝䛔䛯㟁Ꮚ䞉୙Ᏻᐃ 㼄㼑 ᰾ᩓ஘ᐇ㦂䛻䛚䛡䜛䝹䝭䝜䝅䝔䜱䛾 ᐃ䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸ᮾ໭Ꮫ㝔኱䚸௝ྎ䠄㻞㻜㻝㻢䠅㻚ሯ⏣ᬡࠊᕷᕝ㐍୍ࠊᴮᅬ᫛ᬛࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㡲⏣฼⨾ࠊ⋢Ụᛅ᫂ࠊỈὶ㍤᫂ࠊᡞࢣᓮ⾨ࠊཎ㞞ᘯࠊ⸨⏣ᓧᗈ䚸ᇼ฼໷䚸ᯇ⏣୍⾨䚸ᒣ⏣⪔ᖹ䚸ⱝᮡᫀᚨ䚸Ώ㑔ṇ‶䚸䇿㻿㻯㻾㻵㼀 ἲ䜢⏝䛔䛯㟁Ꮚ䞉୙Ᏻᐃ᰾ᩓ஘ᐇ㦂䛻ྥ䛡䛯㟁Ꮚ䝇䝨䜽䝖䝻䝯䞊䝍䛾䜰䜽䝉䝥䝍䞁䝇ホ౯䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠕᭶䚸኱㜰ᕷ❧኱䚸኱㜰䠄㻞㻜㻝㻡䠅㻚㻌
ᴮᅬ᫛ᬛࠊ㊊❧Ụ௓ࠊᕷᕝ㐍୍ࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㡲⏣฼⨾ࠊ⋢Ụᛅ᫂ࠊሯ⏣ᬡࠊỈὶ㍤᫂ࠊᡞࢣᓮ⾨ࠊཎ㞞ᘯࠊ⸨⏣ᓧᗈ䚸ᇼ฼໷䚸ᯇ⏣୍⾨䚸ᒣ⏣⪔ᖹ䚸ⱝᮡᫀᚨ䚸Ώ㑔ṇ‶䚸䇿㻿㻯㻾㻵㼀 ἲ䜢⏝䛔䛯㟁Ꮚ䞉୙Ᏻᐃ᰾ᩓ஘ᐇ㦂䛻ྥ䛡䛯䝹䝭䝜䝅䝔䜱Ỵᐃ⢭ᗘ䛾ホ౯䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠕᭶䚸኱ᆏᕷ❧኱䚸኱ᆏ䠄㻞㻜㻝㻡䠅㻚㻌
ᡞࢣᓮ⾨ࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㫽⩚░ኴࠊཎ㞞ᘯࠊᒣ⏣⪔ᖹ䚸ⱝᮡᫀᚨ䚸䇾䜲䜸䞁䝡䞊䝮䜽䞊䝷䞊䞉䝞䞁䝏䝱䞊䛾㛤Ⓨ䇿䚸᪥ᮏ≀⌮Ꮫ఍䚸䠕᭶䚸኱ᆏᕷ❧኱䚸኱ᆏ䠄㻞㻜㻝㻡䠅㻚㻌ሯ⏣ᬡࠊᕷᕝ㐍୍ࠊᴮᅬ᫛ᬛࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㡲⏣฼⨾ࠊ⋢Ụᛅ᫂ࠊỈὶ㍤᫂ࠊᡞࢣᓮ⾨ࠊᇼ฼໷䚸ཎ㞞ᘯࠊᯇᑿဏᕼ䚸ᯇ⏣୍⾨䚸᳃㇂ὒ♸䚸⡿ᒣಇᖹ䚸ⱝᮡᫀᚨ䚸䇿㻿㻯㻾㻵㼀 㟁Ꮚ䝇䝨䜽䝖䝻䝯䞊䝍䛾㐠ື㔞ศゎ⬟䛸䜰䜽䝉䝥䝍䞁䝇ホ౯䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸᪩✄⏣኱䚸ᮾி䠄㻞㻜㻝㻡䠅㻚㻌⡿ᒣಇᖹ䚸ᴮᅬ᫛ᬛࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㡲⏣฼⨾ࠊ⋢Ụᛅ᫂ࠊሯ⏣ᬡࠊỈὶ㍤᫂ࠊᡞࢣᓮ⾨ࠊᯇᑿဏᕼ䚸ᯇ⏣୍⾨䚸᳃㇂ὒ♸䚸ⱝᮡᫀᚨ䚸䇿㻿㻯㻾㻵㼀ᐇ㦂⏝䝹䝭䝜䝅䝔䜱䞊䝰䝙䝍䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸᪩✄⏣኱䚸ᮾி䠄㻞㻜㻝㻡䠅㻚㻌ᯇᑿဏᕼ䚸ᕷᕝ㐍୍ࠊᴮᅬ᫛ᬛࠊ኱すဴဢࠊᰩ⏣࿴ዲࠊ㡲⏣฼⨾ࠊ⋢Ụᛅ᫂ࠊሯ⏣ᬡࠊỈὶ㍤᫂ࠊᡞࢣᓮ⾨ࠊཎ㞞ᘯࠊᇼ฼໷䚸ᯇ⏣୍⾨䚸᳃㇂ὒ♸䚸⡿ᒣಇᖹ䚸ⱝᮡᫀᚨ䚸䇿㻿㻯㻾㻵㼀 ᐇ㦂䛻䛚䛡䜛ᩓ஘㟁Ꮚ䝇䝨䜽䝖䝻䝯䞊䝍䛾㛤Ⓨ䇾䚸᪥ᮏ≀⌮Ꮫ఍䚸䠏᭶䚸᪩✄⏣኱䚸ᮾி䠄㻞㻜㻝㻡䠅㻚㻌
Posters Presentations[International Conference etc.]
M. Togasaki, K. Kurita, K. Yamada, R. Toba, M. Hara, T. Ohnishi, and M. Wakasugi, “Development of a buffer-gas-free buncher for low energy
RI ion beam”, 13th Int. Conf. on Heavy Ion Accelerator Technorogy HIAT2015, Sep. 7-11, Yokohama, Japan (2015).
T. Ohnishi, S. Ichikawa, and M. Wakasugi, “Electron-beam-driven RI separator for SCRIT at RIKEN RI Beam Factory”, 13th Int. Conf. on
Heavy Ion Accelerator Technorogy HIAT2015, Sep. 7-11, Yokohama, Japan (2015).

- 410 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Research Instruments Group
1. Abstract
The Research Instruments Group is the driving force at RI Beam Factory (RIBF) for continuous enhancement of activities andcompetitiveness of experimental research. Consisting of four teams, we are in charge of the operation, maintenance, and improvement of
the core research instruments at RIBF, such as the BigRIPS in-flight RI separator, ZeroDegree spectrometer and SAMURAI spectrometer,
and the related infrastructure and equipment. We are also in charge of the production and delivery of RI beams using the BigRIPS separator.
The group also conducts related experimental research as well as R&D studies on the research instruments.

2. Major Research Subjects
Design, construction, operation, maintenance, and improvement of the core research instruments at RIBF and related R&D studies.
Experimental studies on exotic nuclei.

3. Summary of Research Activity
The current research subjects are summarized as follows:(1) Production and delivery of RI beams and related research(2) Design, construction, operation, maintenance, and improvement of the core research instruments at RIBF and their related infrastructureand equipment(3) R&D studies on the core research instruments and their related equipment at RIBF
(4) Experimental research on exotic nuclei using the core research instruments at RIBF

Members
Group Directors
Toshiyuki KUBO ( – Mar. 31, 2016)
Hideki UENO (Apr. 1, 2016 – )Junior Research Associates
Daichi MURAI (Rikkyo Univ.)

Momo MUKAI (Tsukuba Univ.)

Special Temporary Employee
Toshiyuki KUBO
Senior Visiting Scientists
Toshio KOBAYASHI (Tohoku Univ.)

Jerry NOLEN (Argonne National Lab.)

Visiting Scientist
Toshiyuki KUBO (Michigan State Univ.)
Student Trainee
Katrina Elizabeth KOEHLER (West Michigan University)- 411 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Research Instruments GroupBigRIPS Team
1. Abstract
This team is in charge of design, construction, development and operation of BigRIPS in-flight separator and its related research
instruments at RI beam factory (RIBF). They are employed not only for the production of RI beams but also the experimental studies using
RI beams.

2. Major Research Subjects
Design, construction, development and operation of BigRIPS in-flight separator, RI-beam transport lines, and their related research
instruments

3. Summary of Research Activity
This team is in charge of design, construction, development and operation of BigRIPS in-flight separator, RI-beam transport lines, andtheir related research instruments such as ZeroDegree spectrometer at RI beam factory (RIBF). They are employed not only for the
production of RI beams but also various kinds of experimental studies using RI beams.
The research subjects may be summarized as follows:(1) General studies on RI-beam production using in-flight scheme.
(2) Studies on ion-optics of in-flight separators, including particle identification of RI beams(3) Simulation and optimization of RI-beam production.
(4) Development of beam-line detectors and their data acquisition system.
(5) Experimental studies on production reactions and unstable nuclei.
(6) Experimental studies of the limits of nuclear binding.
(7) Development of superconducting magnets and their helium cryogenic systems.
(8) Development of a high-power production target system.
(9) Development of a high-power beam dump system.
(10) Development of a remote maintenance and remote handling systems.
(11) Operation, maintenance and improvement of BigRIPS separator system, RI-beam transport lines, and their related research instruments
such as ZeroDegree spectrometer and so on.
(12) Experimental research using RI beams. 

Members
Team Leader
Koichi YOSHIDA
Research & Technical Scientists
Yoshiyuki YANAGISAWA (Senior Research Scientist)
Naohito INABE (Senior Technical Scientist)

Masao OHTAKE (Senior Technical Scientist)

Nishina Center Research Scientists
Hiroyuki TAKEDA
Kensuke KUSAKA

Naoki FUKUDA

Contract Researchers
Toshiyuki SUMIKAMA
Hiroshi SUZUKI

Yohei SHIMIZU

Postdoctoral Researchers
Deuk Soon AHN

Zeren KORKULU

Research Consultant
Hidekazu KUMAGAI
Part-time Worker
Tetsuro Komatsubara
Senior Visiting Scientist
Jerry NOLEN (Argonne National Lab.)- 412 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Visiting Scientists
Daisuke KAMEDA (TOSHIBA Corp.)
Michael A. FAMIANO (Western Michigan Univ.)
Daniel Pierre BAZIN (NSCL, MSU)
Oleg Borisovich TARASOV (NSCL, MSU)
Hans GEISSEL (GSI)David Joseph MORRISSEY (NSCL, MSU)
Bradley Marc SHERRILL (NSCL, MSU)
Martin Alfred WINKLER (GSI)

Mauricio PORTILLO (NSCL, MSU)
Alan Matthew AMTHOR (Bucknell Univ.)
Tuomas Arne Santeri GRAHN (Univ. of Jyvaskyla)
Alfredo ESTRADE VAZ (Central Michigan Univ.)
Yutaka MIZOI (Osaka Elec.-Com. Univ.)
Naohito IWASA (Tohoku Univ.)
Sadao MOMOTA (Kochi Univ. of Tech.)Kazuo IEKI (Rikkyo Univ.)

Student Trainees
Daichi MURAI (Rikkyo Univ.)
Ha JEONGSU (Seoul National Univ.)
Kousei ASADA (Tohoku Univ.)

Junki AMANO (Rikkyo Univ.)
Takahiro SAKAKIBARA (Tohoku Univ.)
Shunki ISHIKAWA (Tohoku Univ.)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
B. Blank, T. Goigoux, P. Ascher, M. Gerbaux, J. Giovinazzo, S. Grévy, T. Kurtukian Nieto, C. Magron, J. Agramunt, A. Algora, V. Guadilla, A.
Montaner-Piza, A. I. Morales, S. E. A. Orrigo, B. Rubio, D. S. Ahn, P. Doornenbal, N. Fukuda, N. Inabe, G. Kiss, T. Kubo, S. Kubono, S.
Nishimura, V. H. Phong, H. Sakurai, Y. Shimizu, P.-A. Söderström, T. Sumikama, H. Suzuki, H. Takeda, J. Wu, Y. Fujita, M. Tanaka, W.
Gelletly, P. Aguilera, F. Molina, F. Diel, D. Lubos, G. de Angelis, D. Napoli, C. Borcea, A. Boso, R. B. Cakirli, E. Ganioglu, J. Chiba, D.
Nishimura, H. Oikawa, Y. Takei, S. Yagi, K. Wimmer, G. de France, and S. Go, ”New neutron-deficient isotopes from 78Kr
fragmentation”, Physical Review C93, 061301(R), (2016).*
A. Jungclaus, A. Gargano, H. Grawe, J. Taprogge, S. Nishimura, P. Doornenbal, G. Lorusso, Y. Shimizu, G. S. Simpson, P.-A. Söderström, T.
Sumikama, Z. Y. Xu, H. Baba, F. Browne, N. Fukuda, R. Gernhäuser, G. Gey, N. Inabe, T. Isobe, H. S. Jung, D. Kameda, G. D. Kim, Y.-K.
Kim, I. Kojouharov, T. Kubo, N. Kurz, Y. K. Kwon, Z. Li, H. Sakurai, H. Schaffner, K. Steiger, H. Suzuki, H. Takeda, Zs. Vajta, H. Watanabe,
J. Wu, A. Yagi, K. Yoshinaga, S. Bönig, L. Coraggio, J.-M. Daugas, F. Drouet, A. Gadea, S. Ilieva, N. Itaco, T. Kröll, A. Montaner-Pizá, K.
Moschner, D. Mücher, H. Nishibata, A. Odahara, R. Orlandi, and A. Wendt, “First observation of Ȗ rays emitted from excited states
south-east of 132Sn: The ʌJí19/2ٔȞI7/2 multiplet of 132In83”, Physical Review C93, 041301(R), (2016).*
R. Lozeva, H. Naïdja, F. Nowacki, J. Dudek, A. Odahara, C.-B. Moon, S. Nishimura, P. Doornenbal, J.-M. Daugas, P.-A. Söderström, T.
Sumikama, G. Lorusso, J. Wu, Z. Y. Xu, H. Baba, F. Browne, R. Daido, Y. Fang, T. Isobe, I. Kojouharov, N. Kurz, Z. Patel, S. Rice, H.
Sakurai, H. Schaffner, L. Sinclair, H. Watanabe, A. Yagi, R. Yokoyama, T. Kubo, N. Inabe, H. Suzuki, N. Fukuda, D. Kameda, H. Takeda, D.
S. Ahn, D. Murai, F. L. Bello Garrote, F. Didierjean, E. Ideguchi, T. Ishigaki, H. S. Jung, T. Komatsubara, Y. K. Kwon, P. Lee, C. S. Lee, S.
Morimoto, M. Niikura, H. Nishibata, and I. Nishizuka, ”New isomer found in 14051Sb89: Sphericity and shell evolution between N=82 andN=90”, Physical Review C93, 014316, (2016).*
N. Kobayashi, T. Nakamura, Y. Kondo, J. A. Tostevin, N. Aoi, H. Baba, R. Barthelemy, M. A. Famiano, N. Fukuda, N. Inabe, M. Ishihara, R.
Kanungo, S. Kim, T. Kubo, G. S. Lee, H. S. Lee, M. Matsushita, T. Motobayashi, T. Ohnishi, N. A. Orr, H. Otsu, T. Sako, H. Sakurai, Y.
Satou, T. Sumikama, H. Takeda, S. Takeuchi, R. Tanaka, Y. Togano, and K. Yoneda, “One-neutron removal from 29Ne: Defining the lower
limits of the island of inversion”, Physical Review C93, 014613, (2016).*
A. Jungclaus, H. Grawe, S. Nishimura, P. Doornenbal, G. Lorusso, G. S. Simpson, P.-A. Söderström, T. Sumikama, J. Taprogge, Z. Y. Xu, H.
Baba, F. Browne, N. Fukuda, R. Gernhäuser, G. Gey, N. Inabe, T. Isobe, H. S. Jung, D. Kameda, G. D. Kim, Y.-K. Kim, I. Kojouharov, T.
Kubo, N. Kurz, Y. K. Kwon, Z. Li, H. Sakurai, H. Schaffner, Y. Shimizu, K. Steiger, H. Suzuki, H. Takeda, Zs. Vajta, H. Watanabe, J. Wu, A.
Yagi, K. Yoshinaga, G. Benzoni, S. Bönig, K. Y. Chae, L. Coraggio, J.-M. Daugas, F. Drouet, A. Gadea, A. Gargano, S. Ilieva, N. Itaco, F. G.
Kondev, T. Kröll, G. J. Lane, A. Montaner-Pizá, K. Moschner, D. Mücher, F. Naqvi, M. Niikura, H. Nishibata, A. Odahara, R. Orlandi, Z.
Patel, Zs. Podolyák, and A. Wendt, “ȕ decay of semi-magic 130Cd: Revision and extension of the level scheme of 130In”, Physical Review
C94, 024303, (2016).*,ýHOLNRYLü, M. Lewitowicz, R. Gernhäuser, R. Krücken, S. Nishimura, H. Sakurai, D.S. Ahn, H. Baba, B. Blank, A. Blazhev, P. Boutachkov, F.
Browne, G. de France, P. Doornenbal, T. Faestermann, Y. Fang, N. Fukuda, J. Giovinazzo, N. Goel, M. Górska, S. Ilieva, N. Inabe, T. Isobe,
A. Jungclaus, D. Kameda, Y.-K. Kim, <ௗ. .ZRQ, I. Kojouharov, T. Kubo, N. Kurz, G. Lorusso, D. Lubos, K. Moschner, D. Murai, I.
Nishizuka, J. Park, Z. Patel, M. Rajabali, S. Rice, H. Schaffner, Y. Shimizu, L. Sinclair, P.-A. Söderström, K. Steiger, T. Sumikama, H.
Suzuki, H. Takeda, Z. Wang, H. Watanabe, J. Wu, and Z. Xu, “New Isotopes and Proton Emitters–Crossing the Drip Line in the Vicinity of
100Sn”, Physical Review Letters 116, 162501, (2016).*
Y. Kondo, T. Nakamura, R. Tanaka, R. Minakata, S. Ogoshi, 1ௗ$2UU, 1ௗ/$FKRXUL, T. Aumann, H. Baba, F. Delaunay, P. Doornenbal, N.
Fukuda, J. Gibelin, -ௗ:+ZDQJ, N. Inabe, T. Isobe, D. Kameda, D. Kanno, S. Kim, N. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond, J.
Lee, )ௗ00DUTXpV, T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, H. Otsu, H. Sato, Y.
Satou, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, Y. Togano, $ௗ*7XII, M. Vandebrouck, and K. Yoneda, “Nucleus 26O:
A Barely Unbound System beyond the Drip Line”, Physical Review Letters 116, 102503, (2016).*
K. Kisamori, S. Shimoura, H. Miya, S. Michimasa, S. Ota, M. Assie, H. Baba, T. Baba, D. Beaumel, M. Dozono, T. Fujii, N. Fukuda, S. Go, F.
Hammache, E. Ideguchi, N. Inabe, M. Itoh, D. Kameda, S. Kawase, T. Kawabata, M. Kobayashi, Y. Kondo, T. Kubo, Y. Kubota, M.
Kurata-Nishimura, &ௗ6/HH, Y. Maeda, H. Matsubara, K. Miki, T. Nishi, S. Noji, S. Sakaguchi, H. Sakai, Y. Sasamoto, M. Sasano, H. Sato,Y. Shimizu, A. Stolz, H. Suzuki, M. Takaki, H. Takeda, S. Takeuchi, A. Tamii, L. Tang, H. Tokieda, M. Tsumura, T. Uesaka, K. Yako, Y.
Yanagisawa, R. Yokoyama, and K. Yoshida, “Candidate Resonant Tetraneutron State Populated by the 4He(8He,8Be) Reaction”, PhysicalReview Letters 116, 052501, (2016).*
T. Goigoux, P. Ascher, B. Blank, M. Gerbaux, J. Giovinazzo, S. Grévy, T. Kurtukian Nieto, C. Magron, P. Doornenbal, *ௗ*.LVV, S. Nishimura,- 413 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

P.-A. Söderström, 9ௗ+3KRQJ, J. Wu, 'ௗ6$KQ, N. Fukuda, N. Inabe, T. Kubo, S. Kubono, H. Sakurai, Y. Shimizu, T. Sumikama, H. Suzuki,
H. Takeda, J. Agramunt, A. Algora, V. Guadilla, A. Montaner-Piza, $ௗ,0RUDOHV, 6ௗ(ௗ$2UULJR, B. Rubio, Y. Fujita, M. Tanaka, W. Gelletly,
P. Aguilera, F. Molina, F. Diel, D. Lubos, G. de Angelis, D. Napoli, C. Borcea, A. Boso, 5ௗ%&DNLUOL, E. Ganioglu, J. Chiba, D. Nishimura, H.
Oikawa, Y. Takei, S. Yagi, K. Wimmer, G. de France, S. Go, and %ௗ$%URZQ, “Two-Proton Radioactivity of 67Kr”, Physical Review Letters
117, 162501, (2016).*
Z. Patel, Zs. Podolyák, P.M. Walker, P.H. Regan, P.-A. Söderström, H. Watanabe, E. Ideguchi, G.S. Simpson, S. Nishimura, F. Browne, P.
Doornenbal, G. Lorusso, S. Rice, L. Sinclair, T. Sumikama, J. Wu, Z.Y. Xu, N. Aoi, H. Baba, F.L. Bello Garrote, G. Benzoni, R. Daido, Zs.
Dombrádi, Y. Fang, N. Fukuda, G. Gey, S. Go, A. Gottardo, N. Inabe, T. Isobe, D. Kameda, K. Kobayashi, M. Kobayashi, T. Komatsubara,
I. Kojouharov, T. Kubo, N. Kurz, I. Kuti, Z. Li, H.L. Liu, M. Matsushita, S. Michimasa, C.-B. Moon, H. Nishibata, I. Nishizuka, A. Odahara, E.
ùDKLQ + 6DNXUDL + 6FKDIIQHU, H. Suzuki, H. Takeda, M. Tanaka, J. Taprogge, Zs. Vajta, F.R. Xu, A. Yagi, R. Yokoyama, ”Decay
spectroscopy of 160Sm: The lightest four-quasiparticle K isomer”, Physics Letter B753, 182, (2016).*
H. Wang, H. Otsu, H. Sakurai, D.S. Ahn, M. Aikawa, P. Doornenbal, N. Fukuda, T. Isobe, S. Kawakami, S. Koyama, T. Kubo, S. Kubono, G.
Lorusso, Y. Maeda, A. Makinaga, S. Momiyama, K. Nakano, M. Niikura, Y. Shiga, P.-A. Söderström, H. Suzuki, H. Takeda, S. Takeuchi, R.
Taniuchi, Ya. Watanabe, Yu. Watanabe, H. Yamasaki, K. Yoshida, ”Spallation reaction study for fission products in nuclear waste: Cross
section measurements for 137Cs and 90Sr on proton and deuteron”, Physics. Letter B754, 104, (2016).*
H. Watanabea, G.X. Zhang, K. Yoshida, P.M. Walker, J.J. Liu, J. Wu, P.H. Regan, P.-A. Söderström, H. Kanaoka, Z. Korkulu, P.S. Lee, S.
Nishimura, A. Yagi, D.S. Ahn, T. Alharbi, H. Baba, F. Browne, A.M. Bruce, R.J. Carroll, K.Y. Chae, Zs. Dombradi, P. Doornenbal, A. Estrade,
N. Fukuda, C. Griffin, E. Ideguchi, N. Inabe, T. Isobe, S. Kanaya, I. Kojouharov, F.G. Kondev, T. Kubo, S. Kubono, N. Kurz, I. Kuti, S.
Lalkovski, G.J. Lane, C.S. Lee, E.J. Lee, G. Lorusso, G. Lotay, C.-B. Moon, I. Nishizuka, C.R. Nita, A. Odahara, Z. Patel, V.H. Phong, Zs.
Podolyák, O.J. Roberts, H. Sakurai, H. Schaffne, C.M. Shand, Y. Shimizu, T. Sumikama, H. Suzuki, H. Takeda, S. Terashima, Zs. Vajta, J.J.
Valiente-Dóbon, Z.Y. Xu, “Long-lived K isomer and enhanced Ȗ vibration in the neutron-rich nucleus 172Dy: Collectivity beyond double
midshell”, Physics Letter B760, 641, (2016).*
Y. Toganoa, T. Nakamura, Y. Kondo, J.A. Tostevin, A.T. Saito, J. Gibelin, N.A. Orr, N.L. Achouri, T. Aumann, H. Baba, F. Delaunay, P.
Doornenbal, N. Fukuda, J.W. Hwang, N. Inabe, T. Isobe, D. Kameda, D. Kanno, S. Kim, N. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond, J.
Lee, F.M. Marqués, R. Minakata, T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S.
Ogoshi, H. Otsu, H. Sato, Y. Satou, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, A.G. Tuff, M. Vandebrouck, K.
Yoneda, “Interaction cross section study of the two-neutron halo nucleus 22C”, Physics Letter B761, 412, (2016).*
P.-A. Söderström, P.M. Walker, J. Wu, H.L. Liu, P.H. Regan, H. Watanabe, P. Doornenbal, Z. Korkulu, P. Lee, J.J. Liu, G. Lorusso, S.
Nishimura, V.H. Phong, T. Sumikama, F.R. Xu, A. Yagi, G.X. Zhang, D.S. Ahn, T. Alharbi, H. Baba, F. Browne, A.M. Bruce, R.J. Carroll, K.Y.
Chae, Zs. Dombradi, A. Estrade, N. Fukuda, C.J. Griffin, E. Ideguchi, N. Inabe, T. Isobe, H. Kanaoka, S. Kanaya, I. Kojouharov, F.G.
Kondev, T. Kubo, S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, G.J. Lane, E.J. Lee, C.S. Lee, G. Lotay, C.-%0RRQ,1LVKL]XND&51LĠă$
Odahara, Z. Patel, Zs. Podolyák, O.J. Roberts, H. Sakurai, H. Schaffner, C.M. Shand, H. Suzuki, H. Takeda, S. Terashima, Zs. Vajta, J.J.
Valiente-Dòbon, Z.Y. Xu, “K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy”, Physics Letter. B762, 404,
(2016).*J. Taprogge, A. Jungclaus, H. Grawe, I. N. Borzov, S. Nishimura, P. Doornenbal, G. Lorusso, G. S. Simpson, P. -A. Söderström, T. Sumikama,
Z. Y. Xu, H. Baba, F. Browne, N. Fukuda, R. Gernhäuser, G. Gey, N. Inabe, T. Isobe, H. S. Jung, D. Kameda, G. D. Kim, Y. -K. Kim, I.
Kojouharov, T. Kubo, N. Kurz, Y. K. Kwon, Z. Li, H. Sakurai, H. Schaffner, Y. Shimizu, K. Steiger, H. Suzuki, H. Takeda, Zs. Vajta, H.
Watanabe, J. Wu, A. Yagi, K. Yoshinaga, G. Benzoni, S. Bönig, K. Y. Chae, L. Coraggio, J. -M. Daugas, F. Drouet, A. Gadea, A. Gargano, S.
Ilieva, N. Itaco, F. G. Kondev, T. Kröll, G. J. Lane, A. Montaner-Pizá, K. Moschner, D. Mücher, F. Naqvi, M. Niikura, H. Nishibata, A.
Odahara, R. Orlandi, Z. Patel, Zs. Podolyák, and A. Wendt, “Proton-hole and core-excited states in the semi-magic nucleus 131In82”,
European Physics Journal A 52, 347, (2016).*[Proceedings](Original Papers) *Subject to Peer Review
T. Kubo, “Recent progress of in-flight separators and rare isotope beam production”, Nuclear Instruments & Methods B 376, 102 (2016).*
T.Sumikama, D.S. Ahn, N. Fukuda, N. Inabe, T. Kubo, Y. Shimizu, H. Suzuki, H. Takeda, N. Aoi, D. Beaumel, K. Hasegawa, E. Ideguchi, N.
Imai, T. Kobayashi, M. Matsushita, S. Michimasa, H. Otsu, S. Shimoura, T. Teranishi, ”First test experiment to produce the slowed-down RI
beam with the momentum-compression mode at RIBF”, Nuclear Instruments & Methods B 376, 180 (2016).*
Oral Presentations[International Conference etc.]
K. Yoshida, ”Preset Status of the target and beam dump system at BigRIPS fragment separator”, The 6th High Power targetry Workshop,
Oxford, UK, April 11 – 15, 2016.
Z. Korkulu, ”ANSYS code calculations of the beam spot temperature at BigRIPS separator”, The 6th High Power targetry Workshop, Oxford,
UK, April 11 – 15, 2016.
N. Fukuda, "Operational Experiences with BigRIPS”, 6th Fragment Separator Expert Meeting, Grand Rapids, MI, USA, August 30 –September 1, 2016.
H. Suzuki, ”Ion optics development-1 (high resolution PID mode)”, 6th Fragment Separator Expert Meeting, Grand Rapids, MI, USA, August
30 – September 1, 2016.
H. Takeda, "Ion optical developments at BigRIPS -Additive and Subtractive Modes”, 6th Fragment Separator Expert Meeting, Grand Rapids,
MI, USA, August 30 – September 1, 2016.
K. Yoshida, ”High-power Issues: Status and Simulations”, 6th Fragment Separator Expert Meeting, Grand Rapids, MI, USA, August 30 –September 1, 2016.
Y. Shimizu, ”Production yields and cross sections at the BigRIPS separator”, 6th Fragment Separator Expert Meeting, Grand Rapids, MI,
USA, August 30 – September 1, 2016.
Y. Shimizu, ”New isotope search in the EURICA campaign at RIKEN RIBF”, EURICA Celebration and Collaboration Meeting, RIKEN, Wako,
Saitama, Japan, September 6, 2016.

- 414 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)[Domestic Conference]ᑠᒣಇᖹ, ኱ὠ⚽ᬡ, ΎỈ㝧ᖹ, ⡿⏣೺୍㑻, బ⸨ᗈᾏ, ᮏᯘ㏱, すᮧ⨾᭶, 㖹ᘅ༑୕, Ḉ஭༤൤, Ṋෆ⪽, ☾㒊ᛅ᫛, 㤿ሙ⚽ᛅ, ᪥ୗ೺♸,኱す⣧୍, ➲㔝໷⣖, P. Doornenbal, ⚟⏣┤ᶞ, ᑠᯘಇ㞝, Ⅳ❤⪽அ, ᯇ⏣ὒᖹ, బ⸨⩏㍤, J. Hwang, ㏆⸨ὒ௓, ୰ᮧ㝯ྖ, ᰢ㔝Ὀᏹ, ༡᪉ு࿃, ⏕㉺㥴, ᮧୖဴஓ, ୰ሯᚨ⥅, J. Gibelin, L. Sylvain, ᪂಴₶, ᑠᯘಙஅ, H. Liu, J. Lee, E. Nikolskii, ᆏཱྀ⪽ᚿ, D. Beaumel, ࠕ୙ኚ㉁㔞ἲࢆ⏝࠸ࡓ 16C ࡢࢡࣛࢫࢱ࣮≧ែࡢ◊✲ࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
ᕷᕝ㞝୍, 㧗ᓠឡᏊ, す⏿Ὧᕼ, ௒ᮧ្, ⸨⏣᭸⨾, బ⸨ᬛဢ, ⢄ᒣᝅ⮳, ΎỈ㝧ᖹ, D.S.Ahn, ᪫⪔୍㑻, 㤿ሙ⚽ᛅ, D.L.Balabanski, F.Boulay,
J.M.Daugas, Ụୖ㨥, ⚟⏣┤ᶞ, ⯚ᒣᬛḷᏊ, ྂᕝṊ, G.Georgiev, A.Gladkov, ✄㎶ᑦே, ▼ᶫ㝧Ꮚ, ᑠᯘ⩏⏨, ᑠᓥಟ୍㑻, A.Kusoglu,ᕝཱྀ㧗ྐ, Ἑᮧᔞஅ, I.Mukul, ᪂಴₶, すᆏኴᚿ, ᑠ⏣ཎཌᏊ, ኱཭♸୍, D.Ralet, ୗ⏣ṇ, G.S.Simpson, Ⅳ❤⪽அ, 㕥ᮌᏹ, ➉⏣ᾈஅ,
L.C.Tao, ᰢ㔝Ὀᏹ, ᐩỌ኱ᶞ, ୖ㔝⚽ᶞ, ᒣᓮᒎᶞ, X.F.Yang, ࠕ୰ᛶᏊ㐣๫᰾ 75Cu ࡢ࢔࢖ࢯ࣐࣮≧ែࡢ᰾☢Ẽ࣮࣓ࣔࣥࢺࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
Ṋෆ⪽, ᅄ᪉⍞⣖, ୰ᮧ㝯ྖ, ᰢ㔝Ὀᏹ, ㏆⸨ὒ௓, ᆤ⏣₶୍, ᑿᓮ཭ᚿ, 㰺⸨ᩔ⨾, ኱ὠ⚽ᬡ, Wang He, Ώ㎶ᖾಙ, ᕝ℩㡴୍㑻,
ImPACT-RIBF ࢥ࣮ࣛ࣎ࣞࢩࣙࣥ, ࠕࢡ࣮ࣟࣥศゎ཯ᛂ࡟ࡼࡿ 107,108Pd ࠾ࡼࡧ 93,94Zr ࡢග྾཰᩿㠃✚ࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍
(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
㜿㒊ᗣᚿ, ᒣཱྀ⏤㧗, ୖᆏ཭ὒ, ᑠἑ㢧, Ὢᔘࡩࡳ, ᒣཱྀ㈗அ, ⱝᮡᫀᚨ, ⛥ᑡ RI ࣜࣥࢢࢥ࣮ࣛ࣎ࣞࢩࣙࣥ,ࠕ⛥ᑡ RI ࣜࣥࢢࡢᛶ⬟ホ౯ࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
T. L. Tang, S. Kawase, T. Uesaka, D. Beaumel, M. Dozono, T. Fujii, N. Fukada, T. Fukunaga, A. Galinda-Uribarri, S. H. Hwang, N. Inabe, D.
Kameda, T. Kawahara, W. Y. Kim, K. Kisamori, M. Kobayashi, T. Kubo, Y. Kubota, K. Kusaka, C. S. Lee, Y. Maeda, H. Matsubara, S.
Michimasa, H. Miya, T. Noro, A. Obertelli, S. Ota, E. Padilla-Rodal, S. Sakaguchi, H. Sakai, M. Sasano, S. Shimoura, S. S. Stepanyan, H.
Suzuki, M. Takaki, H. Takeda, H. Tokieda, T. Wakasa, T. Wakui, K. Yako, Y. Yanagisawa, J. Yasuda, R. Yokoyama, K. Yoshia, and J.
Zenihiro, ”Quasi-free proton knockout of 23,25F”, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
ᮧ஭኱ᆅ, ᐙᇛ࿴ኵ, ஂಖᩄᖾ, ✄㎶ᑦே, ⚟⏣┤ᶞ, ➉⏣ᾈஅ, 㕥ᮌᏹ, Ᏻᚓ㡰, ΎỈ㝧ᖹ, బ⸨ᗈᾏ, బ⸨ඃᶞ, ᪥ୗ೺♸, ᰗ⃝ၿ⾜, ኱➉ᨻ㞝, ྜྷ⏣ග୍, ኱ὠ⚽ᬡ, ᒾబ┤ோ, ୰ᮧ㝯ྖ, Oleg B. Tarasov, Brad M. Sherrill, Dave J. Morrissey, Hans Geissel, ࠕ኱ᙉᗘ 48Ca ࣅ࣮࣒ࢆ⏝࠸ࡓ୰ᛶᏊࢻࣜࢵࣉࣛ࢖ࣥ᥈⣴ IIࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
Ύᕝ⿱, 㐨ṇ᪂୍㑻, ᑠᯘᖿ, すᮧኴᶞ, ᶓᒣ㍯, ᑠᯘ࿴㤿, Ỉୖ῟, ➓ᕝᾈஅ, 㤿ሙ⚽ᛅ, G.P.A. Berg, ᇽᅬᫀ఑, ⚟⏣┤ᶞ, ྂ㔝㐩ஓ, ஭ᡭཱྀᰤ἞, ✄㎶ᑦே, ᕝ⏿㈗⿱, ᕝ℩㡴୍㑻, ᮌబ᳃៞୍, ஂಖᩄᖾ, ஂಖ⏣ᝆᶞ, ᮤΎ⚽, ᯇୗᫀྐ, ᐑ⿱அ, Ọ಴ᘯᗣ, ኱⏣᫴㍜, 㓇஭ⱥ⾜, ୗᾆா, A. Stolz, 㕥ᮌᏹ, 㧗ᮌᇶఙ, ➉⏣ᾈஅ, Ṋෆ⪽, ᫬ᯞ⣫ྐ, ୖᆏ཭ὒ, ▮ྥㅬኴ㑻, ᒣཱྀຬ㈗, ᰗ⃝ၿ⾜, ྜྷ⏣ග୍,
ࠕSHARAQ ࡟࠾ࡅࡿ୰ᛶᏊ㐣๫ Sc ㏆ഐ᰾ࡢ᰾␗ᛶయ Ȗ ⥺ศගࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 –22, 2016.
Ᏻ⏣῟ᖹ, ➲㔝໷⣖, R.G.T. Zegars, 㤿ሙ⚽᫂, W. Chao, ⚟⏣┤ᶞ, ✄㎶ᑦே, ☾㒊ᛅ᫂, G. Jhang, ட⏣኱㍜, ஂಖᩄᖾ, すᮧ⨾᭶, E.
Milman, ᮏᯘ㏱, ኱ὠ⚽ᬡ, V. Panin, W. Powell, 㓇஭ⱥ⾜, 㓇ྥṇᕭ, బ⸨ᗈᾏ, ΎỈ㝧ᖹ, L. Stuhl, 㕥ᮌᏹ, S. Tangwancharoen, ➉⏣ᾈஅ, ୖᆏ཭ὒ, ⡿⏣೺୍㑻, 㖹ᘅ༑୕, ᑠᯘಇ㞝, Ⅳ❤⪽அ, ⏣㧗⩏, ୰ᮧ㝯ྖ, ㏆⸨ὒ௓, ᰢ㔝Ὀᏹ, ᅄ᪉⍞⣖, ᆤ⏣₶୍, ▮ྥㅬኴ㑻,ୗᾆா, ኱⏣᫴㍜, ᕝ℩㡴୍㑻, ஂಖ⏣ᝆᶞ, 㧗ᮌᇶఙ, 㐨ṇ᪂୍㑻, ᮌబ᳃៞୍, ᮤΎ⚽, ᫬ᯞ⣫ྐ, ᇽᅬᫀ఑, ᑠᯘᖿ, ᑠᒣಇᖹ, ᑠᯘಙஅ, ⱝ⊃ᬛႹ, ᆏཱྀ⪽, A. Krasznahorkay, ᮧୖဴஓ, ୰ሯᚨ⥅, 㔠Ꮚ㞞⣖, ᯇ⏣ὒᖹ, D. Mucher, S. Reichert, D. Bazin, J.W. Lee,
ࠕ132Sn(p,n)཯ᛂ࡟ࡼࡿ࢞ࣔࣇࢸ࣮ࣛ㑄⛣ࡢ◊✲ࠖࠊ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
ᑿᓮ཭ᚿ, ୰ᮧ㝯ྖ, Ṋෆ⪽, ㏆⸨ὒ௓, ᰢ㔝Ὀᏹ, ᅄ᪉⍞⣖, ᆤ⏣₶୍, 㰺⸨ᩔ⨾, ኱ὠ⚽ᬡ A, ⋤㉪ A, Ώ㎶ᖾಙ B, ௚ ImPACT-RIBF ࢥ࣮ࣛ࣎ࣞࢩࣙࣥ, ࠕ238U ࡢ㣕⾜᰾ศ⿣࡟ࡼࡗ࡚⏕ᡂࡉࢀࡿ 107Pd,79Se ࡢ࢔࢖ࢯ࣐࣮ẚࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
⛅ᯞᬛ⨾, 㛵ཱྀோᏊ, ࿴⏣Ὀᩗ, Ụ⸨኱஧ᮁ, Ώ㑓㊧Ṋ, ௒⣫ྐ, ᆏᮏᡂᙪ, 㓇஭ⱥ⾜, ୖᆏ཭ὒ, 㕥ᮌᏹ, ᰗ⃝ၿ⾜, ᇽᅬᫀ఑, ஂಖ⏣ᝆᶞ,ⱝ⊃ᬛႹ, ᆏཱྀ⪽ᚿ, Ᏻ⏣῟ᖹ, 㐍⸨భ㍜, ⏣➃ᚰᾏ, ኱಴⥤⳹, ๓⏣ᖾ㔜, ᕝୖ㥴௓, ᒣᮏ㐩ஓ, Evgeniy Milman, Sergey Chebotaryov,
ࠕ186.6 MeV/nucleon 㔜㝧Ꮚ-㝧Ꮚᙎᛶᩓ஘࡟࠾ࡅࡿ㔜㝧Ꮚ೫ᴟศゎ⬟ ᐃ࡜୕యຊࠖ, ᪥ᮏ≀⌮Ꮫ఍ ➨ 71 ᅇᖺḟ኱఍(2016), ᮾ໭Ꮫ㝔኱Ꮫࠊᐑᇛ┴ࠊ3/19 – 22, 2016.
ᑠᯘᖿ, 㐨ṇ᪂୍㑻, Ύᕝ⿱, 㤿ሙ⚽ᛅ A, G.P.A. BergB, ᇽᅬᫀ఑, ⚟⏣┤ᶞ A, ྂ㔝㐩ஓ C, ஭ᡭཱྀᰤ἞ D, ✄㎶ᑦே A, ᕝ⏿㈗⿱ C, ᕝ℩㡴୍㑻, ᮌబ᳃៞୍, ᑠᯘ࿴㤿 E, ஂಖᩄᖾ A, ஂಖ⏣ᝆᶞ, ᮤΎ⚽, ᯇୗᫀྐ, ᐑ⿱அ, Ỉୖ῟ F, Ọ಴ᘯᗣ E, すᮧኴᶞ F, ➓ᕝᾈஅ F, ኱⏣᫴㍜,㓇஭ⱥ⾜ A, ୗᾆா, A. StolzG, 㕥ᮌᏹ A, 㧗ᮌᇶఙ, ➉⏣ᾈஅ A, Ṋෆ⪽ A, ᫬ᯞ⣫ྐ, ୖᆏ཭ὒ A, ▮ྥㅬኴ㑻, ᒣཱྀຬ㈗ E, ᰗ⃝ၿ⾜ A, ᶓ
ᒣ㍯, ྜྷ⏣ග୍, ࠕ㣕⾜᫬㛫ἲࢆ⏝࠸ࡓ୰ᛶᏊᩘ 34 ㏆ഐ Ca ྠ఩యࡢ㉁㔞 ᐃࠖ, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ኱Ꮫࠊᐑᓮ┴ࠊ
9/21 – 24, 2016.
ᶓᒣ㍯, ஭ᡭཱྀᰤ἞, G. Simpson, ⏣୰ࡲ࡞, すᮧಇ஧, P. Doornenbal, P-A Söderström, G. Lorusso, Z. Y. Xu, J. Wu, Ⅳ❟⪽அ, 㟷஭⪃, 㤿ሙ⚽ᛅ, F. Bello, F. Browne, ኱㐨⌮ᜨ, Y. Fang, ⚟⏣┤ᶞ, G. Gey, 㒓ៅኴ㑻, ✄㎶ᑦே, ☾㒊ᛅ᫛, ட⏣኱㍜, ᑠᯘ࿴㤿, ᑠᯘᖿ, ᑠᯇཎဴ㑻, ஂಖᩄᖾ, I. Kuti, Z. Li, ᯇୗᫀྐ, 㐨ṇ᪂୍㑻, C.-B. Moon, す⏿Ὧᕼ, すሯ୍ᖹ, ᑠ⏣ཎཌᏊ, Z. Patel, S. Rice, Sahin, L. Sinclair,㕥ᮌᏹ, ➉⏣ᾈஅ, J. Taprogge, E. Z. Vajta, Ώ㑓ᐶ, ඵᮌᙬ♸ᮍ, ࠕ୰ᛶᏊ㐣๫ Nd ྠ఩యࡢኚᙧ㐍໬࡟࠾ࡅࡿ༑භ㔜ᴟኚᙧࡢຠᯝࠖ, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, ᐑᓮ኱Ꮫࠊᐑᓮ┴ࠊ9/21 – 24, 2016.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Research Instruments GroupSAMURAI Team
1. Abstract
In collaboration with research groups in and outside RIKEN, the team designs, develops and constructs the SAMURAI spectrometerand relevant equipment that are and will be used for reaction experiments using RI beams at RI Beam Factory. The SAMURAI
spectrometer consists of a large superconducting dipole magnet and a variety of detectors to measure charged particles and neutrons. Afterthe commissioning experiment in March 2012, the team prepared and conducted, in collaboration with researchers in individual
experimental groups, the first series of experiments with SAMURAI in May 2012. Then, several numbers of experiments were well
performed until now utilizing the property of SAMURAI. The team also provides basis for research activities by, for example, organizing
collaboration workshops by researchers who are interested in studies or plan to perform experiments with the SAMURAI spectrometer.

2. Major Research Subjects
Design, operation, maintenance and improvement of the SAMURAI spectrometer and its related research instruments. Support andmanagement for SAMURAI-based research programs.

3. Summary of Research Activity
The current research subjects are summarized as follows:(1) Operation, maintenance and improvement of a large superconducting dipole magnet that is the main component of the SAMURAI
spectrometer(2) Design, development and construction of various detectors that are used for nuclear reaction experiments using the SAMURAI
spectrometer.
(3) Preparation for planning experiments using SAMURAI spectrometer.
(4) Maintenance and improvement of the SAMURAI beam line.
(5) Formation of a collaboration platform called "SAMURAI collaboration"

Members
Team Leader
Hideaki OTSU

List of Publications & Presentations
Publications[Journal](Original Papers)
J.W. Hwang, S. Kim, Y. Satou, N.A. Orr, Y. Kondo, T. Nakamura, J. Gibelin, N.L. Achouri, T. Aumann, H. Baba, F. Delaunay, P. Doornenbal,
N. Fukuda, N. Inabe, T. Isobe, D. Kameda, D. Kanno, N. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond, J. Lee, F.M. Marqués, R. Minakata,
T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S. Ogoshi, H. Otsu, H. Sato, Y. Shimizu,
H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, Y. Togano, A.G. Tuff, M. Vandebrouck, K. Yoneda,"Single-neutron knockout
from 20C and the structure of 19C", Phys. Lett. B 769, 503 (2017).
Y. Togano, T. Nakamura, Y. Kondo, J.A. Tostevin, A.T. Saito, J. Gibelin, N.A. Orr, N.L. Achouri, T. Aumann, H. Baba, F. Delaunay, P.
Doornenbal, N. Fukuda, J.W. Hwang, N. Inabe, T. Isobe, D. Kameda, D. Kanno, S. Kim, N. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond,J. Lee)00DUTXHғV50LQDNDWD T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S.
Ogoshi, H. Otsu, H. Sato, Y. Satou, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, A.G. Tuff, M. Vandebrouck,K.
Yoneda, "Interaction cross section study of the two-neutron halo nucleus 22C", Phys. Lett. B 761, 412 (2016).
Y. Kondo, T.Nakamura, R.Tanaka, R.Minakata, S.Ogoshi, N.A.Orr, N.L.Achouri, T.Aumann, H.Baba, F.Delaunay, P.Doornenbal, N.Fukuda,
J.Gibelin, J.W.Hwang, N.Inabe, T.Isobe, D.Kameda, D.Kanno, S.Kim, N.Kobayashi, T.Kobayashi, T.Kubo, S.Leblond, J.Lee, F.M.Marques,
T.Motobayashi, D.Murai, T.Murakami, K.Muto, T.Nakashima, N.Nakatsuka, A.Navin, S.Nishi, H.Otsu, H.Sato, Y.Satou, Y.Shimizu,
H.Suzuki, K.Takahashi, H.Takeda, S.Takeuchi, Y.Togano, A.G.Tuff, M.Vandebrouck, K.Yoneda, " Nucleus 26O: A Barely Unbound Systembeyond the Drip Line”, Phys. Rev. Lett 116, 102503 (6pages) (2016).
H. Otsu, S. Koyama, N. Chiga, T. Isobe, T. Kobayashi, Y. Kondo, M. Kurokawa, W.G. Lynch, T. Motobayashi, T. Murakami, T. Nakamura, M.
Kurata-Nishimura, V. Panin, H. Sato, Y. Shimizu, H. Sakurai, M.B. Tsang, K. Yoneda, H. Wang, “SAMURAI in its operation phase for RIBF”,
NIMB 376, (2016), 175-179.
J. Yasuda, M. Sasano, R.G.T. Zegers, H. Baba, W. Chao, M. Dozono, N. Fukuda, N. Inabe, T. Isobe, G. Jhang, D. Kameda, T. Kubo, M.
Kurata-Nishimura, E. Milman, T. Motobayashi, H. Otsu, V. Panin, W. Powell, H. Sakai, M. Sako, H. Sato, et al., “Inverse kinematics (p,n)
reactions studies using the WINDS slow neutron detector and the SAMURAI spectrometer”,NIMB 376 (2016), 393-396.
T. Nakamura, Y. Kondo, “Large acceptance spectrometers for invariant mass spectroscopy of exotic nuclei and future developments”, NIMB
376 (2016), 156-161.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)(Review)
T. Motobayashi, "Study of weakly bound nuclei at RIKEN RIBF͇, Few-Body Systems 57, 337-341 (2016).
(Proceedings)
S. Sakaguchi, T. Uesaka, T. Wakui, S. Chebotaryov, T. Kawahara, S. Kawase, E. Milman, T. L. Tang, K. Tateishi and T. Teranishi, ͆Studies
of Unstable Nuclei with Spin-Polarized Proton Target͇, International Journal of Modern Physics 40, 1660071 (2016).
L. Stuhl et al., A New Low-energy Plastic Scintillation Neutron Detector For Real Time Pulse Shape Discrimination, PoS Proceeding of
Science (INPC2016) 085 (2017).
Oral Presentations[International Conference etc.]
T. Nakamura, (Invited) “Weakly bound and unbound nuclei near the neutron drip line“, INPC2016, 11-16, Sep, 2016, Adelaide, Australia
T.Nakamura, (Invited) “Recent Experiments and Perspectivefs of SAMURAI“, RIBF Users Meeting 2016, 8-9, Sep, 2016, Wako, Saitama
T.Nakamura, (Invited) “Spectroscopy of weakly bound and unbound nuclei“, Physics beyond the limits of stability: exploring the contiunum,
17-21, Oct.,2016, ECT*, Trento, Italy
T.Nakamura, (Invited) “Nuclear structure near and beyond the neutron drip line“, 1st Tsukuba-CCS-RIKEN joint workshop on microscopic
theories of nuclear structure and dynamics, 12-16, Dec., 2016, Wako, Saitama
T.Nakamura, (Invited) “Neutron-star matter and related physics studied by neutron-rich nuclei“, International Symposium on Neutron Star
Matter (NSMAT2016), 21-23, Nov.,2016, Sendai
T.Nakamura, (Invited) “Structure of neutron drip-line nuclei probed by breakup reactions“, APPC-APC
4-8,Dec.,2016, Brisbane, Australia
T.Nakamura, (Invited) “Structure of nuclei along and beyond the neutron drip line“, ESNT Workshop on Dynamics of highly unstable exotic
light nuclei and few-body systems
30,Jan-3,Feb,2017, ESNT, Saclay, France
Y.Kondo, (Invited) “Experimental study of 25-28O with SAMURAI“, Direct Reactions with Exotic Beams (DREB2016)11-15,Jul.,2016, Halifax,
CanadaM. Sasano et al., (Invited) "Study of Gamow-Teller transitions from 132Sn via the (p,n) reaction", ECT* workshop " Unraveling the complexityof nuclear systems: single-particle and collective aspects through the looking glass", Torento Italy, February 10 to 17, 2017.
M. Sasano et al., (Invited) "Gamow-Teller giant resonances in 132Sn", Advances in Radioactive Isotope Science (ARIS) 2017, Keystone CO
US, May 28 to June 2, 2017.
Y. Kubota, (Invited) ͆Two-neutron correlation in Borromean nuclei via the quasi-free (p,pn) reaction͇, in ESNT Workshop, Dynamics of highly
unstable exotic light nuclei and few-body systems (Saclay, France, 2017)
Y. Kondo, “Recent experimental studies using SAMURAI at RIBF”, Current Activities and Future Prospects on Unstable Nuclei: Japan-Korea
Exchange Program (JPS meeting), Tohoku gakuin University, 21, March, 2016
Y. Kondo, “Experimental study of unbound oxygen isotopes beyond the drip line”, International Workshop on "Critical Stability in Few-Body
Systems", RIKEN, 4 Feb, 2016
Y. Kubota, ͆Study on neutron-neutron correlation in Borromean nucleus 11Li via the quasi-free (p,pn) reaction͇, in International Nuclear
Physics Conference (INPC2016) (Adelaide, Australia, 2016).
Y. Kubota, ͆Probing neutron-neutron correlation in Borromean nuclei via the quasi-free (p,pn) reaction͇, in SAMURAI International
Collaboration Workshop 2016 (Fukuoka, Japan, 2016).
Y. Kubota, ͆Study of neutron-neutron correlation in Borromean nucleus 11Li via the (p,pn) reaction͇, in Direct Reactions with Exotic Beams(DREB2016) (Halifax, Canada, 2016).
Y. Kubota, ͆Direct measurement of two neutron correlation in 11Li via the (p,pn) reaction͇, in International Workshop on ͆Critical Stability
in Few-Body Systems͇ (Saitama, Japan, 2016).
S. Chebotaryov, S. Sakaguchi, et.al., “Elastic scattering of neutron-rich 6He nuclei from polarized protons at 200 A MeV”, 22nd International
Spin Symposium, University of Illinois, 27 September 2016.
S. Sakaguchi, S. Chebotaryov, et.al., ”Polarized proton target at SAMURAI: Elastic scattering of 6He from polarized proton”, SAMURAIInternational Collaboration Workshop 2016, Kyushu University, 5 September 2016.
M. Sasano et al., ͆Study of Gamow-Teller transitions from 132Sn via the inverse kinematics (p,n) reaction͇, The 26th International Nuclear
Physics Conference (INPC2016) Adelaide, Australia, 2016.
L. Stuhl et al., A new low-energy plastic scintillation neutron detector for real time pulse shape discrimination, The 26th International Nuclear
Physics Conference (INPC2016) Adelaide, Australia, 2016.
Yasuhiro Togano, ͂Reaction cross section of the two-neutron halo nucleus 22C at 235 MeV/nucleon̓, INPC2016, September 2016, Adelaide,
Australia
S. Koyama, H. Otsu, et.al, “Cluster structure on neutron rich nuclei 16C͇, 11th international Conference on Clustering Aspects of Nuclear
Structure and Dynamics, 23rd May 2016, Naples, Italy
S. Koyama, H. Otsu, et.al., “Study of cluster structure in 16C via Ș inelastic scattering͇, Direct Reactions with Exotic Beams, 15th July
2016, Halifax, Canada
M. Kurata-Nishimura, “SpRIT-TPC experiments at RIKEN 2016”, Transport 2017, 2017/3/27 -30, MSU/FRIB, USA
M. Kurata-Nishimura, “First Experiments with The SpRIT-TPC at SAMURAI in RIKEN-RIBF”, ᪂Ꮫ⾡㡿ᇦࠕ୰ᛶᏊᫍ᰾≀㉁ࠖ➨ 5 ᅇ࢘࢕ࣥࢱ
࣮ࢫࢡ࣮࣭ࣝ◊✲఍ࠕ୰ᛶᏊᫍࡢ᰾≀㉁ࠖ, 2017/2/16-18, Fukushima, Japan
M. Kurata-Nishimura, “First Experiment with the SPiRIT-TPC”, The 26th International Nuclear Physics Conference, 2016/9/11-16, Adelaide,
Australia
M. Kurata-Nishimura, “Preliminary results of SPiRIT-TPC experiment at RIBF-SAMURAI”, The 14th International Symposium on Nuclei in the
Cosmos XIV, 2016/6/19 – 24, Niigata, JapanZ. Yang, "Status and Results of SAMURAI018", 5th Sunflower workshop, Hongkong China 2016, Sep.18-20
Z. Yang, “Study on the cluster structure in nuclei using direct reactions͇, Cluster 2016, Napoli Italy 2016, May 23-27- 417 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES[Domestic Conference]ᰢ㔝Ὀᏹ, “Ț-ray detector CATANA and E1 response of n-rich Ca isotopes”, ᰢ㔝Ὀᏹ, Ᏹᐂ᰾≀⌮㐃⤡༠㆟఍ ◊✲఍, 2016 ᖺ 2 ᭶ ᅜ❧ኳᩥྎᰢ㔝Ὀᏹ, “᪂Ț⥺᳨ฟჾ CATANA”, ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍, 2016 ᖺ 3 ᭶ ᮾ໭Ꮫ㝔኱Ꮫ
Y, Togano, ”Study of nuclear astrophysics by Coulomb dissociation”, MOTO16, June 2016, Rikkyo Univ.
ᰢ㔝Ὀᏹ, “22C ཯ᛂ᩿㠃✚ࡢ㧗⤫ィ ᐃ”, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍, 2016 ᖺ 9 ᭶ ᐑᓮ኱Ꮫᰢ㔝Ὀᏹ, “୰ᛶᏊ㐣๫᰾ࡢ E1 ᛂ⟅࡜᪂Ț⥺᳨ฟჾ CATANA”, ᪂Ꮫ⾡㡿ᇦࠕ୰ᛶᏊᫍ᰾≀㉁ࠖ➨ 5 ᅇ࢘࢕ࣥࢱ࣮ࢫࢡ࣮ࣝ, 2017 ᖺ 2 ᭶, ⚟ᓥ
Y. Kubota, (Invited) , ”Two-neutron correlation in Borromean nuclei via the quasi-free (p,pn) reaction”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࢩ࣏ࣥ
ࢪ࣒࢘ New aspects of direct reactions in probing exotic nuclei, 2017 ᖺ 2 ᭶኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫ
ஂಖ⏣ᝆᶞ, “࣑࣎ࣟ࢔ࣥ᰾(p,pn)཯ᛂࢆ⏝࠸ࡓ஧୰ᛶᏊ㐠ື㔞┦㛵ࡢ◊✲”, ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍ ᮾ໭Ꮫ㝔኱Ꮫ Ἠ࢟ࣕࣥࣃࢫ,2016 ᖺ 3 ᭶ ᮾ໭Ꮫ㝔኱ᏛἨ࢟ࣕࣥࣃࢫ
ᑠᒣಇᖹ㸪኱ὠ⚽ᬡ㸪௚, “୙ኚ㉁㔞ἲࢆ⏝࠸ࡓ 16C ࡢࢡࣛࢫࢱ࣮≧ែࡢ◊✲”, ᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍᫓Ꮨ, 2016 ᖺ 3 ᭶ 20 ᪥, ௝ྎᑠᒣಇᖹ㸪኱ὠ⚽ᬡ㸪௚, “16C ࡢࢡࣛࢫࢱ࣮ᵓ㐀”, ᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍᫓Ꮨ, 2017 ᖺ 3 ᭶ 18 ᪥, ኱㜰㰻⸨ᓅᚿ, ༓㈡ಙᖾ, ⏣ᮧ㝣, Ᏹబぢṇᚿ, ᵽཱྀㄹ, ኱ὠ⚽ᬡ, “SAMURAI ᐇ㦂࡟࠾ࡅࡿ㝧Ꮚ᳨ฟჾ NINJA ࡢ㛤Ⓨ≧ἣ”,᪥ᮏ≀⌮Ꮫ఍ᖺḟ኱఍, 2016 ᖺ 3 ᭶ 21 ᪥ ௝ྎ㰻⸨ᩔ⨾ࠊ୰ᮧ㝯ྖࠊ㏆⸨ὒ௓௚, “཯㊴㝧Ꮚࡢࢺࣛࢵ࢟ࣥࢢࢆ⏝࠸ࡓ㧗ศゎ⬟୰ᛶᏊ᳨ฟჾࡢ㛤Ⓨ”,᪥ᮏ≀⌮Ꮫ఍ ➨㸵㸰ᅇᖺḟ኱఍ 2017
ᖺ 3 ᭶ 17 ᪥–20 ᪥ , ኱㜰ᗓ㇏୰ᕷ ኱㜰኱Ꮫᖹᒣ᫭኱ࠊ୰ᮧ㝯ྖࠊṊෆ⪽௚ “79Se,80Se ࡢࢡ࣮ࣟࣥศゎ཯ᛂ” ᪥ᮏ≀⌮Ꮫ఍ ➨㸵㸰ᅇᖺḟ኱఍ 2017 ᖺ 3 ᭶ 17 ᪥-21 ᪥, ኱㜰ᗓ㇏୰ᕷ ኱㜰኱Ꮫᩯ⡿㈗ேࠊ୰ᮧ㝯ྖࠊᰢ㔝Ὀᏹ௚, “ศゎ཯ᛂࢆ⏝࠸ࡓ 31Ne ࡢ᰾ศග”,᪥ᮏ≀⌮Ꮫ఍ ➨㸵㸰ᅇᖺḟ኱఍ 2017 ᖺ 3 ᭶ 17 ᪥̽22 ᪥, ኱㜰ᗓ㇏୰ᕷ ኱㜰኱Ꮫᒣ⏣ၨ㈗ࠊ୰ᮧ㝯ྖࠊᰢ㔝Ὀᏹࠊ㏆⸨ὒ௓௚ “୙Ᏻᐃ᰾཯ᛂᐇ㦂ࡢࡓࡵࡢȚ⥺᳨ฟჾ࢔࣮ࣞCATANA ࡢᛶ⬟ホ౯”,᪥ᮏ≀⌮Ꮫ఍ ➨㸵㸱ᅇᖺḟ኱఍ 2017 ᖺ 3 ᭶ 17 ᪥–23 ᪥, ኱㜰ᗓ㇏୰ᕷ ኱㜰኱ᏛᏳ⏣ᫀᘯࠊ㏆⸨ὒ௓ࠊ୰ᮧ㝯ྖ௚, “୰ᛶᏊࢻࣜࢵࣉࣛ࢖ࣥ㏆ഐࡢࣇࢵ⣲࣭ࢿ࢜ࣥྠ఩యࡢ࢖ࣥࣅ࣮࣒࣐࢞ࣥ⥺᰾ศග”,᪥ᮏ≀⌮Ꮫ఍ ➨㸵㸲ᅇᖺḟ኱఍, 2017 ᖺ 3 ᭶ 17 ᪥–24 ᪥, ኱㜰ᗓ㇏୰ᕷ ኱㜰኱Ꮫ㏆⸨ὒ௓ "୰ᛶᏊࢻࣜࢵࣉࣛ࢖ࣥࢆ㉸࠼ࡓ㡿ᇦ࡛ࡢ㓟⣲ྠ఩యࡢ୙ኚ㉁㔞᰾ศග", ᇶ◊◊✲఍ࠕ᰾ຊ࡟ᇶ࡙ࡃ᰾ᵓ㐀ࠊ᰾཯ᛂ≀⌮ࡢᒎ㛤ࠖ,2017 ᖺ 3 ᭶ 27 ᪥–29 ᪥,ி㒔ᗓி㒔ᕷ ி㒔኱Ꮫ
Posters Presentations[International Conference etc.]
L. Stuhl et al., "PANDORA, a large volume low-energy neutron detector with real-time neutron-gamma discrimination", Advances inRadioactive Isotope Science (ARIS) 2017, Keystone CO US, May 28 to June 2, 2017.

Doctoral Dissertation
J. Yasuda, "Study of Gamow-Teller transitions from 132Sn via the (p,n) reaction in inverse kinematics", PhD thesis, Kyushu University, March2017.
Y. Kubota, "Neutron-neutron correlation in Borromean nucleus 11Li via the (p,pn) reaction", PhD thesis, University of Tokyo, March 2017.

Master Thesis
S. Koyama, “୙ኚ㉁㔞ἲࢆ⏝࠸ࡓ 16C ࡢࢡࣛࢫࢱ࣮≧ែࡢ◊✲ Study for cluster states in 16C via invariant mass method, 2016”, ᮾி኱Ꮫᆤ⏣ ₶୍ 26F ࡢ୙ኚ㉁㔞᰾ศග, ᮾிᕤᴗ኱Ꮫ
ᑿᓮ཭ᚿ ୕୰ᛶᏊ㠀᮰⦡⣔ 27O ࡢ᰾ศග, ᮾிᕤᴗ኱Ꮫ
㰺⸨ᩔ⨾ ࢲ࢖ࢽ࣮ࣗࢺࣟࣥ┦㛵᥈⣴࡟ྥࡅࡓ㧗ศゎ⬟୰ᛶᏊ᳨ฟჾ HIME ࡢ㛤Ⓨ, ᮾிᕤᴗ኱Ꮫ
Bachelor Thesisᩯ⡿ ㈗ே ୙Ᏻᐃ᰾཯ᛂᐇ㦂ࡢࡓࡵࡢ኱❧యゅ୰ᛶᏊ᳨ฟჾࡢᛶ⬟ホ౯, ᮾிᕤᴗ኱Ꮫᖹᒣ ᫭኱ Ⲵ㟁ࣇࣛࢢ࣓ࣥࢺࡢ⢏Ꮚ㆑ู⏝࣍ࢻࢫࢥ࣮ࣉࡢ㛤Ⓨ, ᮾிᕤᴗ኱Ꮫ
Ᏻ⏣ᫀᘯ ୰ᛶᏊࢻࣜࢵࣉࣛ࢖ࣥ㏆ഐࡢࣇࢵ⣲࣭ࢿ࢜ࣥ᰾ࡢ⥺᰾ศග, ᮾிᕤᴗ኱Ꮫ
ᒣ⏣ၨ㈗ ୙Ᏻᐃ᰾཯ᛂᐇ㦂ࡢࡓࡵࡢȚ⥺᳨ฟჾ࢔࣮ࣞCATANA ࡢᛶ⬟ホ౯, ᮾிᕤᴗ኱Ꮫ

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Research Instruments Group
Computing and Network Team
1. Abstract
This team is in charge of development, management and operation of the computing and network environment, mail and information
servers and data acquisition system and management of the information security of the RIKEN Nishina Center.

2. Major Research Subjects(1) Development, management and operation of the general computing servers(2) Development, management and operation of the mail and information servers(3) Development, management and operation of the data acquisition system(4) Development, management and operation of the network environment(5) Management of the information security

3. Summary of Research Activity
This team is in charge of development, management and operation of the computing and network environment, mail and information
servers and data acquisition system and management of the information security. The details are described elsewhere in this progress report.
(1) Development, management and operation of the general computing servers
We are operating Linux/Unix NIS/NFS cluster system for the data analysis of the experiments and general computing. This cluster
system consists of eight computing servers with 64 CPU cores and totally 200 TB RAID of highly-reliable Fibre-channel interconnection.
Approximately 700 user accounts are registered on this cluster system. We are adopting the latest version of the Scientific Linux (X86_64)
as the primary operating system, which is widely used in the accelerator research facilities, nuclear physics and high-energy physics
communities in the world.
(2) Development, management and operation of the mail and information servers
We are operating RIBF.RIKEN.JP server as a mail/NFS/NIS server. This server is a core server of RIBF Linux cluster system. Postfix
has been used for mail transport software and dovecot has been used for imap and pop services. These software packages enable secure andreliable mail delivery. Because six years have passed since the installation of this sever, we are preparing to replace the server and RAID
file system. Sophos Email Security and Control (PMX) installed on the mail front-end servers which tags spam mails and isolates
virus-infected mails. The probability to identify the spam is approximately 95-99%. We noticed that virus-infected mails wereoccasionally not detected by PMX in the case of new types of virus. Therefore, we added a new rule to PMX to isolate and remove
executable image files attached in mail because they are often aimed at virus infection. As a result, most of the viruses in mails are
successfully blocked by PMX. We are operating several information servers such as Web servers, Integrated Digital Conference (INDICO)
server, Wiki servers, Groupware servers, Wowza streaming servers. An anonymous ftp server, FTP.RIKEN.JP , is managed and operated
at the RNC. Major Linux distributions, including Scientific Linux, Ubuntu and CentOS, are mirrored daily for the convenience of theirusers and for facilitating high-speed access. An HP PloLiant DL-380G6 server was installed in 2009, and it is scheduled to be replaced by
DL-380G9 in June 2017. Simultaneously, the OS will be upgraded from SL 5.11 to SL 7.3. We have been operating approximately 70 unitsof wireless LAN access points in RNC. Almost the entire radiation-controlled area of the East Area of RIKEN Wako campus is covered bywireless LAN for the convenience of experiments and daily work. Since the devices used for the Wireless LAN access points became
obsolete, all of them were replaced by WAPM-1166D or WAPS-APG-600H in 2016, which supports the protocols of 802.11b, 11g, 11a,
11n, and 11ac.
(3) Development, management and operation of the data acquisition system
We have developed the standard data-acquisition system named as RIBFDAQ. This system can process up to 40 MB/s data. By using
parallel readout from front-end systems, the dead time could be small. To synchronize the independent DAQ systems, the time stamping
system has been developed. The resolution and depth of the time stamp are 10 ns and 48 bit, respectively. This time stamping system isvery useful for beta decay experiments such as EURICA and BRIKEN projects. The current main task is the DAQ coupling, because
detector systems with dedicated DAQ systems are transported to RIBF from foreign facilities. In case of SAMURAI Silicon(NSCL/TUM/WUSTL), the readout system is integrated into RIBFDAQ. The projects of MUST2 (GANIL), MINOS (CEA Saclay),
NeuLAND (GSI) and TRB3 (TUM) cases, data taken by their DAQ systems are transferred to RIBFDAQ. For SPIRIT(RIKEN/GANIL/CEA Saclay/NSCL), RIBFDAQ is controlled from the NARVAL-GET system that is a large-scale signal processing
system for the time projection chamber. EURICA (GSI), BRIKEN (GSI/Univ. Liverpool/IFIC) and VANDLE (UTK) projects, we adopt thetime stamping system to use individual trigger for each detector system. In this case, data are merged in offline. In addition to thedevelopment DAQ system, we are developing intelligent circuits based on FPGA. Mountable Controller (MOCO) is a very fast readout
controller for VME modules. General Trigger Operator (GTO) is an intelligent triggering NIM module. Functions of “common trigger
management”, “gate and delay generator”, “scaler” are successfully implemented on GTO.
(4) Development, management and operation of the network environment
We have been managing the network environment collaborating with Advanced Center for Computing and Communications (ACCC).
All the Ethernet ports of the information wall sockets are capable of the Gigabit Ethernet connection (10/100/1000BT). In addition, a 10
Gbps network port has been introduced to the RIBF Experimental area in for the high speed data transfer of RIBF experiment to ACCC innear future. Approximately 60 units of wireless LAN access points have been installed to cover the almost entire area of Nishina Center.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES(5) Management of the information security
It is essential to take proper information security measures for information assets.
We are managing the information security of Nishina Center collaborating with ACCC.

Members
Team Leader
Takashi ICHIHARA (concurrent; Vice Chief Scientist, RI Physics
Lab.)
Research & Technical Scientist
Yasushi WATANABE (concurrent; Senior Research Scientist,
Radiation Lab.)
Nishina Center Research Scientist
Hidetada BABA

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
Inclusive cross section and douIble helicity asymmetry for S production in p+p collisions at ¥s =510 GeV. By PHENIX Collaboration (A. Adareet al.). Phys. Rev. D 93 (2016), 011501(R)e+e- SDLUSURGXFWLRQLQ$X$XFROOLVLRQVDW¥V11 *H9A. By Adare et al. By PHENIX Collaboration (A. Adare et al.). Phys. Rev. C 93
(2016), 014904
Measurement of higher cumulants of net-charge multiplicity distributions in Au+Au collisions at ¥sNN = 7.7 to 200 GeV. By PHENIX
Collaboration (A. Adare et al.). Phys. Rev. C 93 (2016), 011901(R)Charged particle multiplicity and transverse energy production in heavy ion collisions spanning ¥sNN = 7.7 GeV to 200 GeV. By PHENIX
Collaboration (A. Adare et al.). Phys. Rev. C 93 (2016), 024901
Nuclear matter effects on M meson production in Cu+Au collisions at ¥sNN = 200 GeV. By PHENIX Collaboration (A. Adare et al.). Phys. Rev.
C 93 (2016), 024904
System dependence of fractional momentum loss of high pT hadrons in relativistic heavy ion collisions. By PHENIX Collaboration (A. Adare etal.). Phys. Rev. C 93 (2016), 024911
System size dependence of the forward J/psi production in PHENIX. By PHENIX Collaboration (A. Adare et al.). Phys. Rev. C 93 (2016),
034903Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at ¥sNN =200 GeV. By PHENIX Collaboration (A.
Adare et al.). Phys. Rev. C 93 (2016), 034904
Measurement of parity violating spin asymmetries in W ± production at mid-rapidity in longitudinally polarized p+p collisions at ¥s =510 GeV By
PHENIX Collaboration (A. Adare et al.). Phys. Rev. D 93 (2016), 051103(R)Jet Production in d+Au Collisions at ¥sNN = 200 GeVBy PHENIX Collaboration (A. Adare et al.). Phys. Rev. Lett. 116 (2016), 122301
Measurements of identified particle higher harmonic flow in Au+Au collisions at ¥sNN =200GeV. By PHENIX Collaboration (A. Adare et al.).
Phys. Rev. C 93 (2016), 051902(R)Measurement of 1st, 2nd and 3rd azimuthal anisotropy in Cu+Au collisions. By PHENIX Collaboration (A. Adare et al.). Phys. Rev. C 94 (2016),
054910Elliptical and triangular flow of soft direct photons in Au+Au collisions at ¥sNN =200 GeV. By PHENIX Collaboration (A. Adare et al.). Phys. Rev.
C 94 (2016), 064901
J/ȥ longitudinal double spin asymmetry measurement at forward rapidity in p+p collisions at ¥V =510 GeV. By PHENIX Collaboration (A. Adareet al.). Phys. Rev. D 94 (2016), 112008
Oral Presentations[International Conference etc.]
H. Baba, “Isospin character of low-energy dipole strength in 20O”, First Tsukuba-CCS-RIKEN joint workshop on microscopic theories ofnuclear structure and dynamics, Saitama/Ibaraki, Japan, 12-16th December, 2016 (Invited)
H. Baba, “Status of experiments RIBF56 and RIBF64”, 5th SUNFLOWER Workshop, 18-20th September, 2016, Hong Kong, China, 2016
Posters Presentations[International Conference etc.]
H. Baba, T. Ichihara, T. Ohnishi, K. Yoshida, Y. Watanabe, S. Ota, S. Shimoura, R. Yokoyama, S. Takeuchi, D. Nishimura and A. Tokiyasu,“Complete Parallel Readout VME DAQ System”, IEEE 20th Real Time Conference, 5-10th June, 2016

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Research Instruments Group
Detector Team
1. Abstract
This team is in charge of development, fabrication, and operation of various detectors used for nuclear physics experiments at RIBF.
Our current main mission is maintenance and improvement of detectors which are used at BigRIPS separator and its succeeding beam lines
for beam diagnosis and particle identification of RI beams. We are also engaged in R&D of new detectors that can be used forhigher-intensity RI beams. In addition, we are doing the R&D which uses the pelletron accelerator together with other groups.

2. Major Research Subjects
Development, fabrication, and operation of various detectors for nuclear physics experiments, including beam-line detectors which areused for the production and delivery of RI beams (beam diagnosis and particle identification). R&D which uses the pelletron accelerator.

3. Summary of Research Activity
The current research subjects are summarized as follows:(1) Maintenance and improvement of the beam-line detectors which are used at BigRIPS separator and its succeeding beam lines.
(2) Development of new beam-line detectors with radiation hardness and tolerance for higher counting rates(3) Management of the pelletron accelerator and R&D which uses the pelletron

Members
Team Leader
Hiromi SATO
Research and Technical Scientist
Tokihiro IKEDA (Senior Research Scientist)
Special Temporary Employee
Manabu HAMAGAKIVisiting Scientist
Takeshi KOIKE (Tohoku Univ.)
Student Trainee
Itaru HAKAMADA (Tokyo Univ.)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
R. Yokoyama, S. Go, D. Kameda, T. Kubo, N. Inabe, N. Fukuda, H. Takeda, H. Suzuki, K. Yoshida, K. Kusaka, K. Tanaka, Y. Yanagisawa, M.
Ohtake, H. Sato, Y. Shimizu, H. Baba, M. Kurokawa, D. Nishimura, T. Ohnishi, N. Iwasa, A. Chiba, T. Yamada, E. Ideguchi, T. Fujii, H.
Nishibata, K. Ieki, D. Murai, S. Momota, Y. Sato, JW. Hwang, S. Kim, O.B. Tarasov, D.J. Morrissey, B.M. Sherrill, G. Simpson, C.R.
Praharaj, “New K isomers in the neutron-rich N=100 isotones Sm-162, Eu-163, and Gd-164”, Physical Review C 95, 034313 (2017). *T. Ikeda, T.M. Kojima, Y. Natsume, J. Kimura, and T. Abe, “Stable transmission of slow highly charged ions through tapered glass capillarywith active discharging method for sub-micron sized beams”, Applied Physics Letters 109, 133501 (2016). *Y. Kazama, K. Ishii, W. Aonuma, T. Ikeda, H. Kawamoto, A. Koizumi, D. Filatov, M. Chibalina, R. Bergero, D. Charlesworth, T. Abe, and S.
Kawano, “A new physical mapping approach refines the sex-determining gene positions on the Silene latifolia Y-chromosome”, Scientific
Reports 6, 18917 (2016). *S.J. Wickramarachchi, T. Ikeda, B.S. Dassanayake, D. Keerthisinghe, and J. A. Tanis, “Incident energy and charge deposition dependencesof electron transmission through a microsized tapered glass capillary”, Nuclear Instruments and Methods in Physics Research Section B
82, 60 (2016). *K. Ishii, Y. Kazama, R. Morita, T. Hirano, T. Ikeda, S. Usuda, Y. Hayashi, S. Ohbu, R. Motoyama, Y. Nagamura, and T. Abe, “Linear Energy
Transfer-dependent Change in Rice Gene Expression Profile after Heavy-ion Beam Irradiation”, PLOS ONE 11 (7): e0160061 (2016).*
S.J. Wickramarachchi, T. Ikeda, B. S. Dassanayake, D. Keerthisinghe, and J. A. Tanis, “Electron-beam transmission through a
micrometer-sized tapered-glass capillary: Dependence on incident energy and angular tilt angle”, Physical Review A 94, 022701 (2016). *- 421 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESOral Presentations[International Conference etc.]
H. Sato :͆Status of PID detectors at BigRIPS", Fragment Separator Expert Meeting 2016, (Amway Grand Plaza Hotel), Grand Rapids, USA,
August (2016).
[Domestic Conference]ඵᮌᙬ♸ᮍ, ᑠ⏣ཎཌᏊ, R. Lozeva, C. Moon, ᪉୍ᕹ, ኱㐨⌮ᜨ, す⏿Ὧᕼ, 㔠ᒸ⿱ᚿ, P. Lee, ୗ⏣ṇ, すᮧಇ஧, P. Doornenbal, G.
Lorusso, Ⅳ❟⪽அ, Ώ㎶ᐶ, P.S. derstrm, J. Wu, F. Brown, Z.Y. Xu, ᶓᒣ㍯, ☾㒊ᛅ᫛, 㤿ሙ⚽ᛅ, Ḉ஭༤൤, 㕥ᮌᏹ, ✄㎶ᑦே, ட⏣኱㍜, ⚟⏣┤ᶞ, ➉⏣ᾈஅ, Ᏻᚓ㡰, ΎỈ㝧ᖹ, బ⸨ᗈᾏ, ஂಖᩄᖾ, ▼ᇉ▱ᶞ, ᳃ᮏ⩧ኴ, ஭ᡭཱྀᰤ἞, ᑠᯇཎဴ㑻, ᪂಴₶, すሯ୍ᖹ, C.S.
Lee, and the EURICA collaborators:͆୰ᛶᏊ㐣๫࡞ Xe ྠ఩య࡟࠾ࡅࡿ㞟ᅋ㐠ື≧ែࡢ⣔⤫ⓗኚ໬͇, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, 㸦኱㜰኱Ꮫ㸧, ኱㜰, 3 ᭶ (2017).
ᑠᒣಇᖹ, ኱ὠ⚽ᬡ, ΎỈ㝧ᖹ, ⡿⏣೺୍㑻, బ⸨ᗈᾏ, ᮏᯘ㏱, すᮧ⨾᭶, 㖹ᘅ༑୕, Ḉ஭༤൤, Ṋෆ⪽, ☾㒊ᛅ᫛, 㤿ሙ⚽ᛅ, ᪥ୗ೺♸,኱す⣧୍, ➲㔝໷⣖, P. Doornenbal, ⚟⏣┤ᶞ, ᑠᯘಇ㞝, Ⅳ❤⪽அ, ᯇ⏣ὒᖹ, బ⸨⩏㍤, J. Hwang, ㏆⸨ὒ௓, ୰ᮧ㝯ྖ, ᰢ㔝Ὀᏹ, ༡᪉ு࿃, ⏕㉺㥴, ᮧୖဴஓ, ୰ሯᚨ⥅, J. Gibelin, L. Sylvain, ᪂಴₶, ᑠᯘಙஅ, H. Liu, J. Lee, E. Nikolskii, ᆏཱྀ⪽ᚿ, D. Beaumel:͆16C ࡢࢡࣛࢫࢱ࣮ᵓ㐀͇, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, 㸦኱㜰኱Ꮫ㸧, ኱㜰, 3 ᭶ (2017).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “㟁ᴟ௜ࡁ࢞ࣛࢫ࢟ࣕࣆ࣮ࣛࣜගᏛ⣔࡟ࡼࡿప㏿࣐࢖ࢡࣟ࢖࢜ࣥࣅ࣮࣒Ᏻᐃ౪⤥ࡢࡓࡵࡢ࢔ࢡࢸ࢕ࣈᨺ㟁ἲ”, ࣅ࣮࣒≀⌮◊✲఍ 2016, 㸦SPring-8㸧, బ⏝㒆బ⏝⏫, 11 ᭶ (2016).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “ Active discharging method for stable transmission of ion beams through tapered glass
capillary optics”, ➨ 17 ᅇࠕ࢖࢜ࣥࣅ࣮࣒࡟ࡼࡿ⾲㠃࣭⏺㠃ゎᯒࠖ≉ู◊✲఍, 㸦ி㒔ᗓ❧኱Ꮫ㸧, ி㒔ᕷ, 12 ᭶ (2016).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “ ࢞ࣛࢫ࢟ࣕࣆ࣮ࣛࣜ࡟ࡼࡿప㏿ከ౯࢖࢜ࣥࣅ࣮࣒ࡢࢧࣈ࣑ࢡࣟࣥ໬࡜Ᏻᐃ౪⤥ࡢࡓࡵࡢ࢔ࢡࢸ࢕ࣈ࢞࢖ࢹ࢕ࣥࢢ”, ཎᏊ⾪✺Ꮫ఍➨ 41 ᅇᖺ఍, 㸦ᐩᒣ኱Ꮫ㸧, ᐩᒣᕷ, 12 ᭶ (2016).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “ 檿ᶵ⬟࢞ࣛࢫ࢟ࣕࣆ࣮ࣛࣜගᏛ⣔࡟ࡼࡿప㏿ከ౯࢖࣐࢜ࣥ࢖ࢡࣟࣅ࣮࣒ࡢᏳᐃ౪⤥”,᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, 㸦኱㜰኱Ꮫ㸧, ㇏୰ᕷ, 3 ᭶ (2017).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “ᣍᚅㅮ₇: ࢟ࣕࣆ࣐ࣛࣜ࢖ࢡࣟ࢖࢜ࣥࣅ࣮࣒ࡢᨺᑕ⥺⏕≀Ꮫᛂ⏝”, ᖹᡂ 28 ᖺᗘᘺ⏕◊✲఍ࠕ㔞Ꮚࣅ࣮࣒ࡢᢏ⾡࡜฼⏝ࠖ, 㸦ᮾி኱Ꮫ㸧, ᮾᾏᮧ, 3 ᭶ (2017).

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Accelerator Applications Research Group
1. Abstract
This group promotes various applications of ion beams from RI Beam Factory (RIBF). Radiation Biology Team studies various
biological effects of fast heavy ions and develops new technology to breed plants and microbes by heavy-ion irradiations. RI Applications
Team studies production and application of radioisotopes for various research fields, development of trace element analysis and its
application, and development of chemical materials for ECR ion sources of RIBF accelerators.

2. Major Research Subjects
Research and development in biology, chemistry and materials science utilizing heavy-ion beams from RI Beam Factory.

3. Summary of Research Activity
(1)
(2)
(3)
(4)
(5)
(6)

Biological effects of fast heavy ions.
Research and development of heavy-ion breeding.
RI application researches
Research and development of RI production technology at RIBF.
Developments of trace elements analyses.
Development of chemical materials for ECR ion sources of RIBF accelerators.

Members
Group Director
Tomoko ABE- 423 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Accelerator Applications Research GroupIon Beam Breeding Team
1. Abstract
Ion beam breeding team studies various biological effects of fast heavy ions. It also develops new technique to breed plants andmicrobes by heavy-ion irradiations. Fast heavy ions can produce dense and localized ionizations in matters along their tracks, in contrast to
photons (X rays and gamma rays) which produce randomly distributed isolated ionizations. These localized and dense ionization can cause
double-strand breaks of DNA which are not easily repaired and result in mutation more effectively than single-strand breaks. A uniquefeature of our experimental facility at the RIKEN Ring Cyclotron (RRC) is that we can irradiate living tissues in atmosphere since thedelivered heavy-ion beams have energies high enough to penetrate deep in matter. This team utilizes a dedicated beam line (E5B) of the
RRC to irradiate microbes, plants and animals with beams ranging from carbon to iron. Its research subjects cover physiological study of
DNA repair, genome analyses of mutation, and development of mutation breeding of plants by heavy-ion irradiation. Some new cultivars
have already been brought to the market.

2. Major Research Subjects
(1)
(2)
(3)

Study on the biological effects by heavy-ion irradiation
Study on the molecular nature of DNA alterations induced by heavy-ion irradiation
Innovative applications of heavy-ion beams

3. Summary of Research Activity
We study biological effects of fast heavy ions from the RRC using 135A MeV C, N, Ne ions, 95A MeV Ar ions, 90A MeV Fe ions andfrom the IRC using 160A MeV Ar ions. We also develop breeding technology of microbes and plants. Main subjects are:(1) Study on the biological effects by heavy-ion irradiation
Heavy-ion beam deposits a concentrated amount of dose at just before stop with severely changing the linear energy transfer (LET).
The peak of LET is achieved at the stopping point and known at the Bragg peak (BP). It is well known to be good for cancer therapy toadjust the BP to target malignant cells. On the other hand, a uniform dose distribution is a key to the systematic study for heavy-ion
mutagenesis, and thus to the improvement of the mutation efficiency. Therefore plants and microbes are treated using ions with stable LET.
We investigated the effect of LET ranging from 23 WRNH9ȝPRQPXWDWLRQLQGXFWLRQXVLQJdry seeds of the model plants Arabidopsis
thaliana. The most effective LET (LETmax) was  NH9ȝP LETmax irradiations showed the same mutation rate as that by chemicalmutagens, which typically cause high mutation rate. The LETmax of imbibed rice (Oryza sativa L.) seeds, dry rice seeds and dry wheat(Triticum monococcum) seeds were shown to be 50-63 NH9ȝP, 23-30 NH9ȝP and 50 NH9ȝP, respectively. In the case of microbe(Mesorhizobium lothi), the results showed a higher incidence of deletion mutations for Fe ions at 640 KeV/ȝm than for C ions at 23-40
keV/ȝm. Thus, the LET is an important factor to be considered in heavy-ion mutagenesis.
(2) Study on the molecular nature of DNA alterations induced by heavy-ion irradiation
Detailed analyses on the molecular nature of DNA alterations have been reported as an LET-dependent effect for induced mutation.
The most mutations were deletions ranging from a few to several tens of base pairs (bp) in the Arabidpsis thaliana mutants induced byirradiation with C ions at 30 NH9ȝP and rice mutants induced by irradiation with C ions at 50 NH9ȝP or Ne ions at 63 NH9ȝP. LETmax
is effective for breeding because of its very high mutation frequency. Since most mutations are small deletions, these are sufficient to
disrupt a single gene. Thus, irradiation can efficiently generate knockout mutants of a target gene, and can be applied to reverse genetics.
On the other hand, irradiation with Ar ions at NH9ȝP showed a mutation spectrum different from that at LETmax: the proportion ofsmall deletions (<1 kbp) was low, while that of large deletions ranging from several to several tens of kbp, and rearrangements was high.
Many genes in the genome (> 10%) are composed of tandem duplicated genes that share functions. For knockout of the tandem duplicatedgenes, large deletions are required, and the appropriate deletion size is estimated to be around 5-10 kbp and 10-20 kbp based on the genedensity in Arabidpsis and rice, respectively. No method is currently available to efficiently generate deletion mutants of this size. As such,higher LET irradiation is promising as a new mutagen suitable for the functional analysis of tandem duplicated genes.
(3) Innovative application of heavy-ion beams
We have formed a consortium for ion-beam breeding. It consisted of 24 groups in 1999, in 2016, it consisted of 173 groups fromJapan and 10 from overseas. Breeding was performed previously using mainly flowers and ornamental plants. We have recently put a newJapanese barnyard millet cultivar with low amylose content and short culm, ‘Nebarikko No. 2’ on the market. Beneficial variants have beengrown for various plant species, such as high yield rice, semi-dwarf early rice, semi-dwarf buckwheat, semi-dwarf barley, hypoallergenic
peanut, spineless oranges, non-flowering Eucalyptus and lipids-hyperaccumulating unicellular alga. We collaborate with Miyagi prefecture
and Tohoku University to breed salt-resistant lines in the more delicious commercial rice varieties, ‘Hitomebore’ and ‘Manamusume’.
Imbibed seeds were irradiated with the LETmax (C-ions) on 16 April, 2011. We isolated 73 candidate lines of salt-resistant mutants from719 M2 progenies grown in the saline paddy field in Tohoku University in 2012. From these, we selected 12 salt-resistant M3 lines in 2013,
4 M4 lines in 2014 and one M5 line in 2015. The target of heavy-ion breeding is extended from flowers to crops like grains so that it willcontribute to solve the global problems of food and environment.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Members
Team Leader
Tomoko ABE (concurrent: Group Director, Accelerator Applications Research Gr.)
Research & Technical Scientist
Kazuhide TSUNEIZUMI (Senior Research Scientist)
Masako IZUMI (Senior Research Scientist)
Teruyo TSUKADA (Senior Research Scientist)
Tokihiro IKEDA (concurrent)

Katsunori ICHINOSE (Senior Technical Scientist)
Hiroshi ABE (Senior Technical Scientist)
Ryouhei MORITA (Technical Scientist)

Contract Researchers
Hiroyuki ICHIDA

Yusuke KAZAMA

Postdoctoral Researcher
Kotaro ISHIITechnical Staff I
Yoriko HAYASHI

Yuki SHIRAKAWA

Technical Staff II
Sumie OHBU
Research Consultants
Masahiro MII
Part-time Workers
Hideo TOKAIRIN
Sachiko KOGURE
Taeko WAKANA

Mieko YAMADAHaruka WATANABE (Aug.15 – Sep. 12, 2016)
Hitomi TAMURA (Aug.15 – Sep. 12, 2016)

Visiting Scientist
Makoto FUJIWARA (Univ. of Tokyo)
Masao WATANABE (Tohoku Univ.)
Hisashi TSUJIMOTO (Tottori Univ.)
Yutaka MIYAZAWA (Tohoku Univ.)
Toshinari GODO (Flower & Garden Bank)
Masanori TOMITA (CRIEPI)
Toshikazu MORISHITA (Nat’l. Inst. Agric. Res.)
Koji MURAI (Fukui Pref. Univ.)
Hinako TAKEHISA (Nat’l. Inst. Agric. Sci.)
Akiko HOKURA (Tokyo Denki Univ.)
Norihiro OHTSUBO (Kyoto Pref. Univ.)

Eitaro FUKATSU (Forestry and Forest Products Res. Inst.)
Tomonari HIRANO (Univ. of Miyazaki)
Yoichi SATO (Riken Food Co., Ltd.)Ali FERJANI (Tokyo Gakugei Univ.)
Katsutomo SASAKI (Nat’l Agric. and Food Res. Org.)
Kunio SUZUKI (Technoflora, Co., Ltd.)
Kazumitsu MIYOSHI (Chiba. Univ.)
Makoto UBUKATA (Hokkaido Univ.)
Tadashi SATO (Tohoku Univ.)
Takeshi YAMAKI (Riken Vitamin Co., Ltd.)

Visiting Technicians
Takuji YOSHIDA (Takii Seed Co., Ltd.)
Daisuke SAITO (Riken Food Co., Ltd.)

Keiji IKEDA (KK SeaAct)

Research Fellows
Naoji WAKITA (Wadomari Cho Agr. Exp. Station)
Tadahito OOTUBO (Wadomari Cho Agr. Exp. Station)
Shunsuke IMANISHI (Natl. Inst.Veg. and Tea Sci.)
Tomihiro TAKESHITA (Wadomari Cho)

Yoshiharu TAKE (Wadomari Cho)
Hiroshi ASATO (Wadomari Cho)
Kenji OOYOSHI (Wadomari Cho)
Hironari UCHIDA (Saitama Pref. Res. Inst.)

Student Trainees
Yu IMAMURA (Tokyo Denki Univ.)
Kazuki TAKANASHI (Tokyo Denki Univ.)
Yoshihiro TAKAHASHI (Kitazato Univ.)
Takuya NISHINOBO (Tokyo Denki Univ.)

Koichi NAMBU (Tokyo Denki Univ.)
Naoko HIROSE (Tokyo Denki Univ.)- 425 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
㐲⸨ᖾᏊ, 㰻⸨⿱ኴ㑻, 㜿㒊⠜ᬛ, 㔝ཱྀ༠୍, ᪂㔝Ύ, すᮧᖾ୍, 㓇஭཭ᖾ, 㧗ᶫ⏤ಙ, 㜿㒊▱Ꮚ: “ࢩࣙࢡࣚ࢘ࢠࢡ᪂ရ✀ ͂ᒣᅬ K4 ྕ̓ ࡢ⫱ᡂ”, ᒣᙧ┴㎰ᴗ◊✲ሗ࿌ 8, 93-102 (2016). *Kato M., Masamura N., Shono J., Okamoto D., Abe T., Imai S.: “Production and characterization of tearless and non-pungent onion”,
SCIENTIFIC REPORTS 6, Article No. 23779 (2016). *Yamada K., Kazama Y., Mitra S., Marukawa Y., Arashida R., Abe T., Ishikawa T., Suzuki K.: “Production of a thermal stress resistant mutant
Euglena gracilis strain using Fe-ion beam irradiation”, Bioscience, Biotechnology, and Biochemistry 80, 1650-1656 (2016). *Sato Y., Hirano T., Niwa K., Suzuki T., Fukunishi N., Abe T., Kawano S.: “Phenotypic differentiation in the morphology and nutrient uptake
kinetics among Undaria pinnatifida cultivated at six sites in Japan”, Journal of Applied Phycology 28, 3447-3458 (2016). *Yamada K., Suzuki H., Takeuchi T., Kazama Y., Mitra S., Abe T., Goda K., Suzuki K., Iwata O.: “Efficient selective breeding of live oil-richEuglena gracilis with fliorescence-actived cell sorting”, SCINTIFIC REPORTS 6, Article No. 26327 (2016). *Ishii K., Kazama Y., Hirano T., Hamada M., Ono Y., Yamada M., Abe T.: “AMAP: A pipeline for whole-genome mutation detection in
Arabidopsis thaliana”, Genes & Genetics Systems 91, 229-233(2016).*
Ishii K., Kazama Y., Morita R., Hirano T., Ikeda T., Usuda S., Hayashi Y., Ohbu S., Ikeda R., Nakamura Y., Abe T.: “Linear Energy
Transfer-Dependent Change in Rice Gene Expression Profile after Heavy-Ion Beam Irradiation”, PLOS ONE 11, e0160061 (2016). *Ikeda T., Kojima T., Natsume Y., Kimura J., Abe T.: “Stable transmission of slow highly charged ions through tapered glass capillary withactive discharging method for sub-micron sized beams”, Applied Physics Letters 109, Article No. 133501 (2016). *Morita R., Nakagawa M., Takehisa H., Hayashi Y., Ichida H., Usuda S., Ichinose K., Abe H., Shirakawa Y., Sato T., Fujiwara T. M., Itoh D.R.,
Abe T.: “Heavy-ion beam mutagenesis identified an essential gene for chloroplast development under cold stress conditions during both
early growth and tillering stages in rice”, Bioscience, Biotechnology, and Biochemistry 81, .271-282 (2016). *Grasso R., Abe T., Cirrone A.P. G., Cuttone G., Gulino M., Musumeci F., Romeno F., Ryuto H., Scordino A.: “Effects of Ion Irradiation on
Seedings Growth Monitored by Ultraweak Delayed Luminescence”, PLOS ONE 11, Article No. e0167998 (2016). *⃝⏣೔ᖹ, ᖹ㔝ᬛஓ, 㣤∹⚰࿴ᙪ, 㜿㒊▱Ꮚ, ᑿᓮ⾜⏕: “ࣞࢱࢫ(Luctuca sativa L.)ࣉࣟࢺࣉࣛࢫࢺ࡬ࡢ࢖࢜ࣥࣅ࣮࣒↷ᑕ࡟ࡼࡗ࡚ฟ⌧ࡋࡓప࣏ࣜࣇ࢙ࣀ࣮ࣝ࢜࢟ࢩࢱ࣮ࢮάᛶࢆ♧ࡍ✺↛ኚ␗య”, ᅬⱁᏛ◊✲ 15, 347-353 (2016). *Ueno Y., Aikawa S., Niwa K., Abe T., Murakami A., Kondo A., Akimoto S.: “Variety in excitation energy transfer processes fromphycobilisomes to photosystems I and II”, Photosynthesis Research, doi: 10. 1007/s11120-017-0345-3 (2017). *(Review)㜿㒊▱Ꮚ, ᯘ౫Ꮚ: “㔜࢖࢜ࣥࣅ࣮࣒ࢆ⏝࠸ࡓရ✀ᨵⰋᢏ⾡ࡢ㛤Ⓨ࡜ࢧࢡࣛ᪂ရ✀ࡢ⫱ᡂ”, FB News 469, 2-6(2016).
㜿㒊▱Ꮚ: “ྂ඾ᅬⱁ᳜≀ࡢ᚟άࢆ┠ᣦࡋ࡚”, ࢚ࢿࣝࢠ࣮ࣞࣅ࣮ࣗ 36, 25 (2016).
㢼㛫⿱௓, ▼஭බኴ㑻, 㜿㒊▱Ꮚ: “᳜≀ᕧ኱ Y ᰁⰍయࡢ㑇ఏᏊᆅᅗసᡂ࡟ᡂຌ̿Y ᰁⰍయࡣ㐍໬ࡢ㐣⛬࡛኱ࡁ࡞㏫఩ࢆ㉳ࡇࡋ࡚࠸ࡓ”, ⏕≀ࡢ⛉Ꮫ 㑇ఏ 70, 394-397 (2016)㢼㛫⿱௓, ᖹ㔝ᬛஓ, ኱⏣ಟᖹ, బ⸨㝧୍, ᮧ஭⪔஧, Ἑ㔝㔜⾜, ᑠ㔝ඞᚨ, 㜿㒊▱Ꮚ: “㔜࢖࢜ࣥࣅ࣮࣒⫱✀࡟ࡼࡿࢢ࣮ࣜࣥ࢖ࣀ࣮࣋ࢩࣙࣥ
ࡢ๰ฟ”, స≀◊✲ 61, 73-79 (2016)㜿㒊▱Ꮚ: “᳜≀࡟ฟࡉࢀࡓࣃࢬࣝ࡟ᣮᡓࡋࠊ᪂ࡓ࡞ⰼࢆ๰ࡿ”, NL ࡔࡼࡾ 469, 1(2017).
బ⸨㝧୍, 㜿㒊▱Ꮚ, ⚟すᬸᑦ: “୕㝣࣓࣡࢝㣴Ṫ࡟࠾ࡅࡿရ✀ᨵⰋ࡜」ᩘᅇ㣴Ṫ࡟㛵ࡍࡿᢏ⾡㛤Ⓨ”, Ỉ⏘Ꮫࢩ࣮ࣜࢬ 184 ᪂ᢏ⾡㛤Ⓨ࡟ࡼࡿᮾ᪥ᮏ኱㟈⅏࠿ࡽࡢ᚟⯆࣭෌⏕, 53-66 (2017).
[Others]⚟すᬸᑦ, బ⸨㝧୍, ᕷ⏣⿱அ, 㜿㒊▱Ꮚ, ᖹ㔝ᬛஓ: “୕㝣࡟࠾ࡅࡿ≉⏘ᾏ⸴㢮ࡢရ✀ᨵⰋᢏ⾡㛤Ⓨ࡜᪂ရ✀⫱ᡂ࡟㛵ࡍࡿᣐⅬᙧᡂ”, ᪥ᮏỈ⏘Ꮫ఍ㄅ, 82, 160 (2016). *Oral Presentations(Domestic Conference)ஂᮧ㯞Ꮚ, ᓟ኱ᶞ, 㜿㒊▱Ꮚ, ᯘ౫Ꮚ, ᖹ㔝ᬛஓ: “ወᙧⰼࡢⓎ⏕ࡀᑡ࡞࠸ኟ⛅㍯ࢠࢡࠕⓑᾴࠖࡢ⫱ᡂ”, ࢖࢜ࣥࣅ࣮࣒⫱✀◊✲఍➨ 11 ᅇ኱఍,⚟஭, 5 ᭶ (2016).
㜿㒊▱Ꮚ: “ᮍ᮶ࢆࡘࡃࡿ୐ࡘ㐨ල ࢖࢜ࣥࣅ࣮࣒ࡗ࡚࡞࠶࡟?”, ࢖࢜ࣥࣅ࣮࣒⫱✀◊✲఍➨ 11 ᅇ኱఍, ⚟஭, 5 ᭶ (2016).
㧗ᇛၨ୍, ⏿ୗᫀ⠊, ᖹ㔝ᬛஓ, 㢼㛫⿱௓, ᯘ౫Ꮚ, ሯ⏣᫭௦, 㜿㒊▱Ꮚ: “᳜≀⤌⧊࡟࠾ࡅࡿ࢖࢜ࣥࣅ࣮࣒↷ᑕᚋࡢȚ-H2AX ࡢศᕸ࡜ᾘ㛗”,࢖࢜ࣥࣅ࣮࣒⫱✀◊✲఍➨ 11 ᅇ኱఍, ⚟஭, 5 ᭶ (2016).
▼஭බኴ㑻, ᖹ㔝ᬛஓ, 㢼㛫⿱௓, ὾⏣㐨᫛, ᑠ㔝ᖾ㍤, ⓑᕝౡᕼ, ኱㒊⃈Ụ, 㜿㒊▱Ꮚ: “㔜࢖࢜ࣥࣅ࣮࣒↷ᑕ⏤᮶ࢩࣟ࢖ࢾࢼࢬࢼኚ␗యࡢ
඲ኚ␗ゎᯒ”, ࢖࢜ࣥࣅ࣮࣒⫱✀◊✲఍➨ 11 ᅇ኱఍, ⚟஭, 5 ᭶ (2016).
బ⸨㝧୍, ᑠ㔝ඞᚨ, ᖹ㔝ᬛஓ, ᕷ⏣⿱அ, ᯘ౫Ꮚ, ⚟すᬸᑦ, 㜿㒊▱Ꮚ: “୕㝣⏘࣓࣡࢝ࡢရ✀ᨵⰋ࡜ᐇ⏝໬”, ࢖࢜ࣥࣅ࣮࣒⫱✀◊✲఍➨ 11
ᅇ኱఍, ⚟஭, 5 ᭶ (2016).
஧⩚ᜤ௓, 㜿㒊▱Ꮚ: “㣴Ṫࣀࣜࡢ✺↛ኚ␗⫱✀࡟࠾ࡅࡿຠ⋡ⓗ࡞㑅ᢤᡭἲ࡜㧗Ỉ ⪏ᛶᰴసฟࡢヨࡳ”, ᖹᡂ 28 ᖺᗘ᪥ᮏỈ⏘Ꮫ఍⛅Ꮨ኱఍,ዉⰋ, 9 ᭶ (2016).
ᕷ⏣⿱அ, ᳃⏣❳ᖹ, ⓑᕝౡᕼ, ᯘ౫Ꮚ, 㜿㒊▱Ꮚ: “࢖ࢿࢤࣀ࣒/࢚࢟ࢯ࣮࣒ゎᯒ࡟ࡼࡿኚ␗㑇ఏᏊࡢ㎿㏿ྠᐃ࡜㔜࢖࢜ࣥࣅ࣮࣒ㄏⓎኚ␗ࡢゎᯒ”, ᪥ᮏ⫱✀Ꮫ఍➨ 130 ᅇㅮ₇఍, 㫽ྲྀ, 9 ᭶ (2016).
㜿㒊▱Ꮚ, 㢼㛫⿱௓, ᕷ⏣⿱அ: “㔜࢖࢜ࣥࣅ࣮࣒ရ✀ᨵⰋᢏ⾡ࡢ㛤Ⓨ࡜ኚ␗యࢆ⏝࠸ࡓཎᅉ㑇ఏᏊゎᯒ”, ᪥ᮏᨺᑕ⥺ᙳ㡪Ꮫ఍ ➨ 59 ᅇ኱఍,ᗈᓥ, 10 ᭶ (2016).
㜿㒊▱Ꮚ, ᕷ⏣⿱அ, ⚟すᬸᑦ, బ⸨㝧୍, ᖹ㔝ᬛஓ: “㔜࢖࢜ࣥࣅ࣮࣒↷ᑕ࡟ࡼࡿ୕㝣࣓࣡࢝ࡢရ✀ᨵⰋ”, DNA 㚷ᐃᏛ఍➨ 9 ᅇ኱఍, ᮾி,
11 ᭶ (2016).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “㟁ᴟ௜ࡁ࢞ࣛࢫ࢟ࣕࣆ࣮ࣛࣜගᏛ⣔࡟ࡼࡿప㏿࣐࢖ࢡࣟ࢖࢜ࣥࣅ࣮࣒Ᏻᐃ౪⤥ࡢࡓࡵࡢ࢔ࢡࢸ࢕ࣈᨺ㟁ἲ”, ࣅ࣮࣒≀⌮◊✲఍ 2016, රᗜ, 11 ᭶ (2016).
Ikeda T., Kojima T., Natsume Y., Kimura J., Abe T.: “Active discharging method for stable transmission of ion beams through tapered glass
capillary optics”, ➨ 17 ᅇࠕ࢖࢜ࣥࣅ࣮࣒࡟ࡼࡿ⾲㠃࣭⏺㠃ゎᯒࠖ≉ู◊✲఍, ி㒔, 12 ᭶ (2016).
㜿㒊▱Ꮚ: “ຍ㏿ჾࢆ฼⏝ࡋࡓᨺᑕ⥺⫱✀࡟ࡼࡿᆅᇦ㎰ᴗ࡬ࡢ㈉⊩ࡢᒎᮃ”, ᩥ㒊⛉Ꮫ┬୺ദ࢔ࢪ࢔ཎᏊຊ༠ຊࣇ࢛࣮࣒ࣛ(FNCA)ࠕᣢ⥆ྍ⬟࡞

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)㎰ᴗࡢࡓࡵࡢᨺᑕ⥺ᢏ⾡࣭ᨺᑕ⥺⫱✀ࡢᛂ⏝࡟㛵ࡍࡿබ㛤ࢭ࣑ࢼ࣮ࠖ, ⚟஭, 12 ᭶ (2016).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “ৈᶵ⬟࢞ࣛࢫ࢟ࣕࣆ࣮ࣛࣜගᏛ⣔࡟ࡼࡿప㏿ከ౯࢖࣐࢜ࣥ࢖ࢡࣟࣅ࣮࣒ࡢᏳᐃ౪⤥”,᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ㇏୰, 3 ᭶ (2017).
▼ᕝᾈᶞ, బࠎᮌ㥴, ᖹ㔝ᬛஓ, 㢼㛫⿱௓, 㜿㒊▱Ꮚ, ఀ⸨❳୍, ⸨ཎㄔ: “ࢩࣟ࢖ࢾࢼࢬࢼⴥ⥳యศ⿣␗ᖖኚ␗యࢆ⏝࠸ࡓⰼ⢊Ⓨ⏕㐣⛬࡟࠾ࡅࡿⰍ⣲యቑṪࡢゎᯒ”, ᪥ᮏ㎰ⱁ໬Ꮫ఍ 2017 ᖺᗘ(ᖹᡂ 29 ᖺᗘ)኱఍, ி㒔, 3 ᭶ (2017).
⏣୰᭸அ, Rehenuma T., 㜿㒊▱Ꮚ: “࢖ࢿ✺↛ኚ␗⣔⤫ 13-45 ࡟࠾ࡅࡿⓑᮍ⇍⢏Ⓨ⏕ᶵᵓࡢゎᯒ ➨㸱ሗ㸸 ᗘᛂ⟅ᛶࡢᐃ㔞ⓗẚ㍑”, ➨ 243ᅇ᪥ᮏస≀Ꮫ఍ㅮ₇఍, ᮾி, 3 ᭶ (2017).
ᮤ㗓, ୹⩚⣪ஓె, すᮧᐉஅ, ᕷ⏣⿱அ, ᳃⏣❳ᖹ, 㜿㒊▱Ꮚ, ຍ⸨ᾈ: “࢖ࢿ࢚࢟ࢯ࣮࣒ゎᯒ࡟ࡼࡿ࣐࢞ࣥ⥺ㄏⓎ✺↛ኚ␗ࡢ᥈⣴࠾ࡼࡧཎᅉ
㑇ఏᏊࡢ㎿㏿ྠᐃ”, ᪥ᮏ⫱✀Ꮫ఍➨ 131 ᅇㅮ₇఍, ྡྂᒇ, 3 ᭶ (2017).
ᒣ㇂ᾈྐ, ୖጔ㤾᲍, ୰㔝㐨἞, ᯘ౫Ꮚ, 㧗ぢᖖ᫂, 㛛⏣᭷ᕼ, ዟᮏ⿱, ᆏᮏர, 㜿㒊▱Ꮚ, ⲡሙಙ: “࢖ࢿ stay-green 㑇ఏᏊ DCD1 ࡢ༢㞳࡜ᶵ⬟ゎᯒ”, ᪥ᮏ⫱✀Ꮫ఍➨ 131 ᅇㅮ₇఍, ྡྂᒇ, 3 ᭶ (2017).
Posters Presentations(Domestic Conference)▼஭බኴ㑻, 㢼㛫⿱௓, ᖹ㔝ᬛஓ, ⓑᕝౡᕼ, ኱㒊⃈Ụ, ᒣ⏣⨾ᜨᏊ, ⱝ⳯ጁᏊ, 㜿㒊▱Ꮚ: “㔜࢖࢜ࣥࣅ࣮࣒↷ᑕ࡛సฟࡋࡓࢩࣟ࢖ࢾࢼࢬࢼ
ᕧ኱Ḟኻኚ␗య㞟ᅋࡢᙧែ࡜Ḟኻ㡿ᇦࡢྠᐃ”, ᪥ᮏ᳜≀ᙧែᏛ఍➨ 28 ᅇ⥲఍࣭኱఍, Ἀ⦖, 9 ᭶ (2016).
ὸ㔝෇ⰼ, ኱⏣ಟᖹ, ᒣᓮㄔ࿴, ▼஭බኴ㑻, 㢼㛫⿱௓, 㜿㒊▱Ꮚ, Ἑ㔝㔜⾜: “ᚤ⣽⸴㢮ࡢ᰾ᆺゎᯒ㸸ࢡࣟࣞࣛࢤࣀ࣒ࡢಸᩘ໬࡜㔜࢖࢜ࣥࣅ࣮࣒↷ᑕ࡟ࡼࡿᰁⰍయศ᩿”, ᪥ᮏ᳜≀ᙧែᏛ఍➨ 28 ᅇ⥲఍࣭኱఍, Ἀ⦖, 9 ᭶ (2016).
㕥ᮌ⤢Ꮚ, ΎἙࡦ࠿ࡿ, 㒆ྖ⋞, 㧗ᶫ࿴ᕼ, ὸᒸ┿⌮Ꮚ, ᖹ㔝ᬛஓ, 㢼㛫⿱௓, 㜿㒊▱Ꮚ, ሯ㇂⿱୍, Ferjani A.: “det3-1 ࡢ▸ᑠ໬ࡣ㐣๫࡞ࣜࢢࢽࣥ⵳✚࡟㉳ᅉࡍࡿࡢ࠿?”, ᪥ᮏ᳜≀ᙧែᏛ఍➨ 28 ᅇ⥲఍࣭኱఍, Ἀ⦖, 9 ᭶ (2016).
㢼㛫⿱௓, ụ⏣ၨ஧, ᙼ㇂㑥ග, ᆏ಴Ⰻ⏨, 㜿㒊▱Ꮚ: “ᨺᑕ⥺↷ᑕ࡟ࡼࡿ࣎ࢺࣜ࢜ࢥࢵ࢝ࢫࡢᾋᥭ⌧㇟”, ᪥ᮏ᳜≀ᙧែᏛ఍➨ 28 ᅇ⥲఍࣭኱఍, Ἀ⦖, 9 ᭶ (2016).
㢼㛫⿱௓, ᖹ㔝ᬛஓ, ▼஭බኴ㑻, ⓑᕝౡᕼ, ኱㒊⃈Ụ, ᒣ⏣⨾ᜨᏊ, ⱝ⳯ጁᏊ, 㜿㒊▱Ꮚ: “ࢩࣟ࢖ࢾࢼࢬࢼࡢ㔜࢖࢜ࣥࣅ࣮࣒Ḟኻኚ␗య㞟ᅋࢆ⏝࠸ࡓᚲ㡲ᰁⰍయ㡿ᇦࡢ࣐ࢵࣆࣥࢢ”, ᪥ᮏ᳜≀Ꮫ఍➨ 80 ᅇ኱఍, Ἀ⦖, 9 ᭶ (2016).
ᖹ㔝ᬛஓ, 㢼㛫⿱௓, ▼஭බኴ㑻, Vuong N. Q., ኱㒊⃈Ụ, ᅧṊஂⓏ, 㜿㒊▱Ꮚ: “㔜࢖࢜ࣥࣅ࣮࣒↷ᑕ⏤᮶ࢩࣟ࢖ࢾࢼࢬࢼ኱㍯ኚ␗యࡢ඲ࢤ
ࣀ࣒ኚ␗ゎᯒ”, ᪥ᮏ᳜≀Ꮫ఍➨ 80 ᅇ኱఍, Ἀ⦖, 9 ᭶ (2016).
Suzuki J., Kiyokawa H., Gunji S., Takahashi K., Asaoka M., Hirano T., Kazama Y., Abe T., Tsukaya H., Ferjani A.: “The Whys and the Hows offlowering stem cracking: Evidenced by histological and genetic approaches”, ᪥ᮏ᳜≀Ꮫ఍➨ 80 ᅇ኱఍, Ἀ⦖, 9 ᭶ (2016).
▼஭බኴ㑻, 㢼㛫⿱௓, ᖹ㔝ᬛஓ, ᒣ⏣⨾ᜨᏊ, ኱㒊⃈Ụ, ὾⏣㐨᫛, ᑠ㔝ᖾ㍤, 㜿㒊▱Ꮚ: “ኚ␗᳨ฟࣃ࢖ࣉࣛ࢖ࣥ AMAP ࡢ㛤Ⓨ࡜㔜࢖࢜ࣥࣅ࣮࣒ࡢ඲ࢤࣀ࣒ኚ␗ࢫ࣌ࢡࢺ࣒ࣛゎᯒ”, ᪥ᮏ᳜≀Ꮫ఍➨ 80 ᅇ኱఍, Ἀ⦖, 9 ᭶ (2016).
ὸ㔝෇ⰼ, ኱⏣ಟᖹ, ᒣᓮㄔ࿴, ▼஭බኴ㑻, 㢼㛫⿱௓, 㜿㒊▱Ꮚ, Ἑ㔝㔜⾜: “ࢡࣟࣞࣛࢤࣀ࣒ࡢಸᩘ໬࡜㔜࢖࢜ࣥࣅ࣮࣒↷ᑕ࡟ࡼࡿᰁⰍయ
ศ᩿໬࡜෌ᵓᡂ”, ᪥ᮏ᳜≀Ꮫ఍➨ 80 ᅇ኱఍, Ἀ⦖, 9 ᭶ (2016).
ᒣ㇂ᾈྐ, ୖጔ㤾᲍, ୰㔝㐨἞, ᯘ౫Ꮚ, 㧗ぢᖖ᫂, ຍ⸨⿱௓, 㛛⏣᭷ᕼ, ⇃୸ᩄ༤, ዟᮏ⿱, ᆏᮏர, 㜿㒊▱Ꮚ, ⲡሙಙ: “࢖ࢿ stay-green✺↛ኚ␗య dcd1 ࡢศᏊ㑇ఏᏛⓗゎᯒ”, ᪥ᮏ⫱✀Ꮫ఍➨ 130 ᅇㅮ₇఍, 㫽ྲྀ, 9 ᭶ (2016).
ᯘ౫Ꮚ, ᳃⏣❳ᖹ, ୍℩຾⣖, ⮻⏣⚈Ꮚ, ⓑᕝౡᕼ, ᮾᾏᯘⱥኵ, బ⸨㞞ᚿ, 㜿㒊▱Ꮚ: “࢖ࢿࡢ✀ᏊྵỈ⋡࡟ࡼࡿ㔜࢖࢜ࣥࣅ࣮࣒ኚ␗ㄏⓎࡢ᭱㐺໬”, ᪥ᮏ⫱✀Ꮫ఍➨ 130 ᅇㅮ₇఍, 㫽ྲྀ, 9 ᭶ (2016).
᳃⏣❳ᖹ, ᕷ⏣⿱அ, ⓑᕝౡᕼ, ᯘ౫Ꮚ, ⮻⏣⚈Ꮚ, ୍℩຾⣖, ᮾᾏᯘⱥኵ, బ⸨㞞ᚿ, 㜿㒊▱Ꮚ: “࢖ࢿኚ␗ゎᯒࣃ࢖ࣉࣛ࢖ࣥ࡟ࡼࡿ㔜࢖࢜ࣥࣅ࣮࣒ㄏⓎ✺↛ኚ␗ࡢྠᐃ”, ᪥ᮏ⫱✀Ꮫ఍➨ 130 ᅇㅮ₇఍, 㫽ྲྀ, 9 ᭶ (2016).
ụ⏣᫬ᾈ, ᑠᓥ㝯ኵ, ኟ┠ዲኵ, ᮌᮧ⣧, 㜿㒊▱Ꮚ: “࢞ࣛࢫ࢟ࣕࣆ࣮ࣛࣜ࡟ࡼࡿప㏿ከ౯࢖࢜ࣥࣅ࣮࣒ࡢࢧࣈ࣑ࢡࣟࣥ໬࡜Ᏻᐃ౪⤥ࡢࡓࡵࡢ࢔ࢡࢸ࢕ࣈ࢞࢖ࢹ࢕ࣥࢢ”, ཎᏊ⾪✺Ꮫ఍➨ 41 ᅇᖺ఍, ᐩᒣ, 12 ᭶ (2016).
ᮾᲄᏹྐ, ୰ᮧ࠶ࡁ, ࣇ࢙ࣝࢪࣕࢽ ࢔ࣜ, 㢼㛫⿱௓, 㜿㒊▱Ꮚ, 㣤⏣⚽฼: “᰿ࡢ㈏ධࡀ୙ྍ⬟࡞◳ࡉࡢᇵᆅࡢ⾲㠃࡛⏕ࡁṧࢀࡿࢩࣟ࢖ࢾࢼ
ࢬࢼ✺↛ኚ␗ᰴࡢࢫࢡ࣮ࣜࢽࣥࢢ”, ➨ 58 ᅇ᪥ᮏ᳜≀⏕⌮Ꮫ఍ᖺ఍, 㮵ඣᓥ, 3 ᭶ (2017).
▼஭බኴ㑻, 㢼㛫⿱௓, ᳃⏣❳ᖹ, ᖹ㔝ᬛஓ, ụ⏣᫬ᾈ, ⮻⏣⚈Ꮚ, ᯘ౫Ꮚ, ኱㒊⃈Ụ, ᮏᒣ❧Ꮚ, 㛗ᮧྜྷ᫭, 㜿㒊▱Ꮚ: “LET ౫Ꮡⓗ࡟ኚືࡍࡿ࢖ࢿࡢ㑇ఏᏊⓎ⌧ࣉࣟࣇ࢓࢖ࣝ”, ᪥ᮏ⫱✀Ꮫ఍➨ 131 ᅇㅮ₇఍, ྡྂᒇ, 3 ᭶ (2017).
᳃⏣❳ᖹ, ୰ᕝ⧛, ➉ஂድዉᏊ, ᯘ౫Ꮚ, ᕷ⏣⿱அ, ⮻⏣⚈Ꮚ, ୍℩຾⣖, Ᏻ㒊ᘯ, ⓑᕝౡᕼ, ᮾᾏᯘⱥኵ, బ⸨㞞ᚿ, ⸨ཎㄔ, ఀ⸨❳୍, 㜿㒊▱Ꮚ: “㔜࢖࢜ࣥࣅ࣮࣒࡛ㄏⓎࡋࡓ࢖ࢿ ᗘឤཷᛶ virescent ኚ␗య csv1 ࡢཎᅉ㑇ఏᏊྠᐃ࡜≉ᛶゎᯒ”, ᪥ᮏ⫱✀Ꮫ఍➨ 131 ᅇㅮ₇఍,ྡྂᒇ, 3 ᭶ (2017).

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
Accelerator Applications Research GroupRI Applications Team
1. Abstract
The RI Applications Team develops production technologies of radioisotopes (RIs) at RIKEN RI Beam Factory (RIBF) for application
studies in the fields of physics, chemistry, biology, engineering, medicine, pharmaceutical and environmental sciences. We use the RIs
mainly for nuclear and radiochemical studies such as RI production and superheavy element chemistry. The purified RIs such as 65Zn and
109Cd are delivered to universities and institutes through Japan Radioisotope Association. We also develop new technologies of mass
spectrometry for the trace-element analyses using accelerator technology and apply them to the research fields such as cosmochemistry,
environmental science, archaeology and so on. We also develop chemical materials for ECR ion sources of heavy-ion accelerators in RIBF.

2. Major Research Subjects(1) Research and development of RI production technology at RIBF
(2) RI application researches(3) Development of trace element and isotope analyses and their applications to geoscience and environmental science(4) Development of chemical materials for ECR ion sources of heavy-ion accelerators in RIBF

3. Summary of Research Activity(1) Research and development of RI production technology at RIBF and RI application studies
Due to its high sensitivity, the radioactive tracer technique has been successfully applied for investigations of the behavior of elementsin the fields of chemistry, biology, engineering, medicine, pharmaceutical and environmental sciences. We have been developing
production technologies of useful radiotracers at RIBF and conducting their application studies in collaboration with many researchers invarious fields. With 14-MeV proton, 24-MeV deuteron, and 50-MeV alpha beams from the AVF cyclotron, we presently produce about 40
radiotracers from 7Be to 211At. Among them, 65Zn, 85Sr, 88Y, and 109Cd are delivered to Japan Radioisotope Association for fee-based
distribution to the general public in Japan. Our RIs are also distributed to researchers under the Supply Platform of Short-lived
Radioisotopes for Fundamental Research, supported by the Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid
for Scientific Research on Innovative Areas. On the other hand, radionuclides of a large number of elements are simultaneously produced
from metallic targets such as natTi, natAg, natHf, and 197Au irradiated with a 135-MeV nucl.–1 14N beam from the RIKEN Ring Cyclotron.
These multitracers are also supplied to universities and institutes as collaborative researches.
In 2016, we developed production technologies of radioisotopes such as 28Mg, 44mSc, 44Ti, 48Cr, 67Cu, 75Se, 88Y, 121mTe, 135mBa, and211At which were strongly demanded but lack supply sources in Japan. We also investigated the excitation functions for the natTi(Į[),
natZn(G[), natZn(Į,[), natPd(d,[), 169Tm(G[), natLu(S[), natLu(d[), natTa(S[), and natTa(G[) reactions to quantitatively produce useful RIs.
We used radiotracers of 61Cu, 66Ga, 69mZn, 88Y, 99Rh, and 139Ce for application studies in chemistry, 67Cu and 211At in nuclear medicine,
88,89Zr, 175Hf, and 177Ta in geochemistry, and 88Zr and 121mTe in environmental science. We also produced 65Zn, 85Sr, 88Y, and 109Cd for ourscientific researches on a regular schedule and supplied the surpluses through Japan Radioisotope Association to the general public. In 2016,
we accepted 5 orders of 65Zn with a total activity of 24 MBq, 1 order of 85Sr with 1 MBq, 2 orders of 88Y with 2 MBq, and 2 orders of 109Cd
with 12 MBq. We also distributed 44mSc (3 MBq × 1), 67Cu (10 MBq × 1), 88Zr (2 MBq × 3), 95Nb (2 MBq × 1), 121mTe (2 MBq × 1), 175Hf(2 MBq × 2), 179Ta (2 MBq × 1), and 211At (20 MBq × 1) under the the Supply Platform of Short-lived Radioisotopes for Fundamental
Research.
(2) Superheavy element chemistry
Chemical characterization of newly-discovered superheavy elements (SHEs, atomic numbers = LVDQH[WUHPHO\LQWHUHVWLQJDQG
challenging subject in modern nuclear and radiochemistry. We are developing SHE production systems as well as rapid single-atomchemistry apparatuses at RIBF. Using heavy-ion beams from RILAC and AVF, 261Rf (Z = 104), 262Db (Z = 105), and 265Sg (Z = 106) areproduced in the 248Cm(18O,5n)261Rf, 248Cm(19F,5n)262Db, and 248Cm(22Ne,5n)265Sg reactions, respectively, and their chemical properties areinvestigated.
We installed a gas-jet transport system to the focal plane of the gas-filled recoil ion separator GARIS at RILAC. This system is apromising approach for exploring new frontiers in SHE chemistry: the background radiation from unwanted products are strongly
suppressed, the intense primary heavy-ion beam is absent in the gas-jet chamber, and hence the high gas-jet extraction yield is attained.
Furthermore, the beam-free conditions make it possible to investigate new chemical systems. In 2016, the isotope of element 107 266Bh was
produced in the 248Cm(23Na,5n)266Bh reaction, and its decay properties were investigated with the rotating wheel apparatus MANON forĮ6)VSHFWURPHWU\Using 265Sg atoms pre-separated by GARIS, the stability of the metal carbon bond in Sg(CO)6 was investigated with athermal decomposition setup under a large international collaboration led by Paul Scherrer Institute. To realize aqueous chemistry studies of
Sg and Bh, we have been developing a continuous and rapid solvent extraction apparatus which consists of a continuous dissolution
apparatus Membrane DeGasser (MDG), a Flow Solvent Extractor (FSE), and a liquid scintillation detector IRU Į6)-spectrometry. The
performance of MDG and FSE were investigated using 170,174Re and 176Re produced in the natGd(23Na[Q) and 152Gd(23Na5n) reactions,
respectively at GARIS.
At AVF, the distribution ratios (D) of 261Rf LQWKH$OLTXDW+&OV\VWem were measured with the flow-type liquid-liquid extraction
apparatus called as “flow Injection Solvent Extraction apparatus (ISE)” in collaboration with Osaka Univ. The reversed-phase extraction
chromatography of 262Db in the $OLTXDW +) system were also conducted with Automated Rapid Chemistry Apparatus of JAEA in- 428 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

collaboration with Niigata Univ. and JAEA. We also used radiotracers of 88Zr, 90,95Nb, 93mMo, 95mTc, 175Hf, 178a,179Ta, 177,179m,181W, and183,184m,184gRe for model experiments of SHEs.
(3) Development of trace element and isotope analyses and their applications to geoscience and environmental science
We have been developing the ECR Ion Source Mass Spectrometer (ECRIS-MS) for trace element analyses. In 2016, we renovated thedetection system of ECRIS-MS and evaluated sensitivity and mass resolution power. We equipped a laser-ablation system with an ion
source and a pre-concentration system to achieve high-resolution analyses for noble gases such as Kr and Xe. This technique is expected tomonitor the atmosphere around nuclear power plants.
Using the conventional ICP-MS, TIMS, IRMS and so on, we analyzed sediments such as a ferro-manganese nodule in the Pacificocean to elucidate its growth history concerning the environmental changes in the ocean. We also studied lead and sulfur isotope ratios on
cinnabar and asphalt samples from ancient ruins in Japan to elucidate the distribution of goods in the archaic society and to reveal theestablishment of the Yamato dynasty in the period from Jomon to Tumulus. We also studied a feasibility to improve the sensitivity for thesulfur isotope ratios with the “trapping and focusing” techniques using a cryo-system.
(4) Development of chemical materials for ECR ion sources of RIBF
In 2016, we prepared metallic 238U rods and 238UO2 on a regular schedule for 238U-ion accelerations with the 28-GHz ECR of RILAC
II.

Members
Team Leader
Hiromitsu HABA
Research & Technical Scientist
Kazuya TAKAHASHI (Senior Research Scientist)
Postdoctoral Researcher
Yukiko KOMORITechnical Staff I
Shinya YANOU
Research Consultant
Seiichi SHIBATA
Part-time Workers
Michiko KITAGAWA
Yu Vin SAHOO

Nozomi SATO
Keiko WATANABE

Visiting Scientists
Masayuki AIKAWA (Hokkaido Univ.)
Mayeen Uddin KHANDAKER (Univ. Malaya)
Takumi KUBOTA (Kyoto Univ.)
Aya SAKAGUCHI (Univ. of Tsukuba)
Miho TAKAHASHI (Tokyo Univ. Marine Sci. and Tech.)Atsushi TOYOSHIMA (JAEA)
Takahiro YAMADA (Japan Rad. Assoc.)

Kazuhiko AKIYAMA (Tokyo Met. Univ.)
Hidetoshi KIKUNAGA (Tohoku Univ.)
Kazuhiro OOE (Niigata Univ.)
Hiroshi SHIMIZU (Rissho Univ.)
Masayoshi TODA (Tokyo Univ. Marine Sci. and Tech.)
Naoyuki UKON (Hokkaido Univ.)
Akihiko YOKOYAMA (Kanazawa Univ.)

Visiting Technicians
Yuichiro WAKITANI (Japan Rad. Assoc.)
Student Trainees
Ryuji AONO (Niigata Univ.)
Yuki HATTORI (Tokyo Univ. Marine Sci. and Tech.)
Junichi HIRATA (Tokyo Univ. Marine Sci. and Tech.)Junpei INAGAKI (Univ. of Tsukuba)
Narumi KONDO (Osaka Univ.)
Takuya MORIYAMA (Niigata Univ.)
Tetuya NAGAOKA (Niigata Univ.)
Yu NAMBA (Niigata Univ.)
Kouki OUCHI (Osaka Univ.)
Yoshiki FUKUDA (Kanazawa Univ.)
Kazunori HAYASHI (Kanazawa Univ.)
Takumi IKEDA (Osaka Univ.)
Akimitsu KANDA (Osaka Univ.)
Kouki MORIYA (Kanazawa Univ.)

Risa MOTOYAMA (Niigata Univ.)
Masahiro NAGASE (Osaka Univ.)
Shuta OE (Kanazawa Univ.)
Moemi SAITOH (Hokkaido Univ.)
Daisuke SATO (Niigata Univ.)
Kaori SHIRAI (Niigata Univ.)
Shota TSUCHIYA (Niigata Univ.)
Ryohei YAMADA (Niigata Univ.)
Yukari YATSU (Kanazawa Univ.)
Yudai SHIGEKAWA (Osaka Univ.)
Tomohiro TOMITSUKA (Niigata Univ.)
Rufai Ahmed USMAN (Univ. Malaya)
Yuki YASUDA (Osaka Univ.)- 429 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
A. R. Usman, M. U. Khandaker, H. Haba, M. Murakami, and N. Otuka, “Measurements of deuteron-induced reaction cross-sections on
natural nickel up to 24 MeV”, Nuclear Instruments and Methods in Physics Research Section B 368, 112–119 (2016).*
D. Kaji, K. Morimoto, H. Haba, E. Ideguchi, H. Koura, and K. Morita, “Decay properties of new isotopes 234Bk and 230Am, and even–even
Nuclides 234Cm and 230Pu”, Journal of the Physical Society of Japan 85, 015002-1–2 (2016).*
S. Cao, Y. Wang, Z. Qin, F. Fan, H. Haba, Y. Komori, X. Wu, C. Tan, and X. Zhang, “Gas-phase chemistry of ruthenium and rhodium
carbonyl complexes”, Physical Chemistry Chemical Physics 18, 119–125 (2016).*
S. Takács, M. P. Takács, F. Ditrói, M. Aikawa, H. Haba, and Y. Komori, “Activation cross sections of longer-lived radionuclides produced in
germanium by alpha particle irradiation”, Nuclear Instruments and Methods in Physics Research Section B 383, 213–226 (2016).*
F. Ditrói, S. Takács, H. Haba, Y. Komori, M. Aikawa, Z. Szücs, and M. Saito, “Excitation function of the alpha particle induced nuclear
reactions on enriched 116Cd, production of the theranostic isotope 117mSn”, Nuclear Instruments and Methods in Physics Research Section
B 385, 1–8 (2016).*
A. R. Usman, M. U. Khandaker, H. Haba, N. Otuka, M. Murakami, and Y. Komori, “Production cross-sections of radionuclides IURPĮ-induced
reactions on natural copper up to 50 MeV”, Applied Radiation and Isotopes 114, 104–113 (2016).*
Y. Kasamatsu, T. Yokokita, K. Toyomura, Y. Shigekawa, H. Haba, J. Kanaya, M. Huang, Y. Ezaki, T. Yoshimura, K. Morita, and A. Shinohara,“Coprecipitation experiment with Sm hydroxide using a multitracer produced by nuclear spallation reaction: A tool for chemical studies withsuperheavy elements”, Applied Radiation and Isotopes 118, 105–116 (2016).*
T. Yokokita, Y. Kasamatsu, A. Kino, H. Haba, Y. Shigekawa, Y. Yasuda, K. Nakamura, K. Toyomura, Y. Komori, M. Murakami, T. Yoshimura,N. Takahashi, K. Morita, and A. Shinohara, “Observation of the chemical reaction equilibria of element 104, rutherfordium: Solid-liquid
extraction of Rf, Zr, Hf and Th with Aliquat 336 resin from HCl”, Dalton Transactions 45, 18827–18831 (2016).*
J. Hirata, K. Takahashi, Yu Vin Sahoo, and M. Tanaka, “Laser ablation inductively coupled plasma mass spectrometry for quantitative
imaging of elements in ferromanganese nodule”, Chemical Geology 427, 65–72 (2016).*
S. Sekimoto, T. Kobayashi, K. Takamiya, M. Ebihara, and S. Shibata, “Origin of spherule samples recovered from Antarctic ice sheet –Terrestrial or extraterrestrial?”, Nuclear Engineering and Technology 48, 293–298 (2016).*
S. Fujita, K. Goto-Azuma, M. Hirabayashi, A. Hori, Y. Iizuka, Y. Motizuki, H. Motoyama, and K. Takahashi, “Densification of layered firn in theice sheet at Dome Fuji, Antarctica”, Journal of Glaciology 62, 103–123 (2016).*[Proceeding](Original Paper) *Subject to Peer Review
H. Haba, “Superheavy element chemistry at GARIS”, EPJ Web of Conferences 131, 07006-1–6 (2016).*[Book](Original Paper)
K. Takahashi, “Frequently used evaluations for aerial and solid pollution” in Corrosion control and surface finishing edited by H. Kanematsu
and D. M. Barry, pp. 141–151, Springer (2016).
⩚ሙᏹග, “⌮⛉ᖺ⾲ ᅜ❧ኳᩥྎ⦅ ᖹᡂ 29 ᖺ ➨ 90 ෉”, p. 582, ୸ၿฟ∧㸪2016 ᖺ 11 ᭶ 30 ᪥.
Oral Presentations[International Conference etc.]
H. Haba, “Superheavy element chemistry behind GARIS at RIKEN”, Nobel Symposia, NS160: Chemistry and Physics of Heavy andSuperheavy Elements, Scania, Sweden, May–June (2016).
H. Haba, “SHE nuclear chemistry at RIKEN”, Seminar für Kern- und Radiochemie, Institut für Kernchemie, Johannes Gutenberg-Universität,
Mainz, Germany, June (2016).
K. Takahashi, Y. Obi, and M. Tanaka, “The lead isotopes of aeolian dust observed at Saitama area (Japan) and their genetic implications”,
International Conference Series on Environmental and Food Monitoring (ISEAC-39), Hamburg, Germany, July (2016).
R. Eichler, M. Asai, H. Brand, N. M. Chiera, A. Di Nitto, R. Dressler, Ch. E. Düllmann, J. Even, R. Eichler, F. Fangli, M. Goetz, H. Haba, W.
Hartmann, E. Jäger, D. Kaji, J. Kanaya, Y. Kaneya, J. Khuyagbaatar, B. Kindler, Y. Komori, B. Kraus, J. V. Kratz, J. Krier, Y. Kudou, N.
Kurz, S. Miyashita, K. Morimoto, K. Morita, M. Murakami, Y. Nagame, K. Ooe, D. Piguet, N. Sato, T. K. Sato, J. Steiner, P. Steinegger, T.
Sumita, M. Takeyama, K. Tanaka, T. Tomitsuka, A. Toyoshima, K. Tsukada, A. Türler, I. Usoltsev, Y. Wakabayashi, Y. Wang, N. Wiehl, A.
Yakushev, S. Yamaki, S. Yano, S. Yamaki, and Z. Qin, “Experimentally assessing the metal-carbon bond stability in Sg(CO)6”, 9thInternational Conference on Nuclear and Radiochemistry (NRC9), Helsinki, Finland, Aug.–Sep. (2016).
T. Fukuchi, H. Haba, S. Yamamoto, Y. Watanabe, and S. Enomoto, “Dual isotope imaging of small animal by a positron emission tomography
with aGGLWLRQDOȖ-ray detectors”, World Molecular Imaging Congress 2016, New York, USA, Sept. (2016).
A. R. Usman, M. U. Khandaker, H. Haba, and N. Karpuz, “Experimental and calculated excitation functions of 56Mn from deuteron-induced
nuclear reactions on nickel”, 3rd International Conference on Computational and Experimental Science and Engineering (ICCESEN-2016),
Antalya, Turkey, Oct. (2016).
T. Fukuchi, H. Haba, S. Yamamoto, Y. Watanabe, and S. Enomoto, “Positron emission tomography with aGGLWLRQDO Ȗ-ray detectors for
multiple probe imaging”, 2016 IEEE NSS/MIC, Strasbourg, France, Oct.–Nov. (2016).
0$LNDZD06DLWR<.RPRUL++DED67DNiFV)'LWUyLDQG=6]ĦFV“Activation cross sections of alpha-induced reactions on natural
palladium for 103Ag production”, The 7th Asian Nuclear Reaction Database Development Workshop (AASPP 2016), Beijing, China, Nov.
(2016).
H. Haba, “Forefront of superheavy element researches at RIKEN”, Symposium for exploring prospective research –Pioneering new fields:- 430 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Forefront of RIKEN’s science and beyond–, Wako, Japan, Nov. (2016).
[Domestic Conference]⩚ሙᏹග, “⌮◊ RI ࣅ࣮࣒ࣇ࢓ࢡࢺ࣮ࣜ࡟࠾ࡅࡿ RI 〇㐀ᛂ⏝”, ᪥ᮏᨺᑕᛶ་⸆ရ༠఍㈡モ஺Ḽ఍,༓௦⏣༊, 1 ᭶ (2016).
⩚ሙᏹග, “⌮◊࡟࠾ࡅࡿ RI 〇㐀”, ᮾ໭኱Ꮫ㟁Ꮚග⌮Ꮫ◊✲ࢭࣥࢱ࣮◊✲఍ ࠕᨺᑕᛶྠ఩ඖ⣲㸦RI㸧〇㐀ィ⏬࡜ከศ㔝࡟࠾ࡅࡿ RI ฼⏝ࡢ⌧≧ࠖ, ௝ྎᕷ, 2 ᭶ (2016)㸬
⩚ሙᏹග, “⌮◊ RI ࣅ࣮࣒ࣇ࢓ࢡࢺ࣮ࣜ࡟࠾ࡅࡿ࢔ࣝࣇ࢓ᨺᑕయ฼⏝”, ➨ 7 ᅇ࢔ࣝࣇ࢓ᨺᑕయᐇ㦂ᐊ฼⏝◊✲఍, ௝ྎᕷ, 2 ᭶ (2016).
⏣୰Ὀ㈗, ᡂΎ⩏༤, ᳃⏣ᾈ௓, ⸨⏣カ⿱, ຍ἞኱ဢ, ᳃ᮏᖾྖ, ᒣᮌࡉࡸ࠿, ⱝᯘὈ⏕, ⏣୰ㅬః, Ṋᒣ⨾㯇, ⡿⏣᫭, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, ▮⣡ៅஓ, B. J. P. Gall, Z. Asfari, H. Faure, 㛗㇂㒊⿱㞝, M. Huang, 㔠㇂῟ᖹ, ᮧୖᫀྐ, ྜྷ⏣ᩔ, ᒣཱྀ㈗அ, 㛛ྔ෤ᶞ, ྜྷ⏣཭⨾, Z.
Gan, L. Ma, H. Geissel, S. Hofmann, Y. Maurer, ᒣᮏ⩧ஓ, ᒣ㔝⿱㈗, Ώ㎶೺཭, ▼⃝೔, ὸ஭㞞ே, 㟷㔝❳ኈ, ᚋ⸨┿୍, 㮵ྲྀㅬ஧,“RIKEN-GARIS ࢆ⏝࠸ࡓ, ㉸㔜ඖ⣲㡿ᇦ࡛ࡢ⼥ྜ㞀ቨศᕸࡢ◊✲”, ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍, ௝ྎᕷ, 3 ᭶ (2016).
⩚ሙᏹග, “ຍ㏿ჾࢆ⏝࠸ࡓᛂ⏝◊✲⏝ࣛࢪ࢜࢔࢖ࢯࢺ࣮ࣉࡢ〇㐀”, ᪥ᮏ≀⌮Ꮫ఍➨ 71 ᅇᖺḟ኱఍, ௝ྎᕷ, 3 ᭶ (2016)㸬
⩚ሙᏹග, “⌮◊ RI ࣅ࣮࣒ࣇ࢓ࢡࢺ࣮ࣜ࡟࠾ࡅࡿ RI 〇㐀ᛂ⏝”, ➨ 11 ᅇ Eichrom Technologies ♫〇ရ࣮ࣘࢨ࣮ࢬࢭ࣑ࢼ࣮, ༓௦⏣༊, 4 ᭶(2016).
బ⸨ᮃ, ▮⣡ៅஓ, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, ᰘ⏣ㄔ୍, Ώ㑓៞Ꮚ, ຍ἞኱ဢ, ㇏ᔱཌྐ, ᯇᮏᖿ㞝, “⌮◊࡟࠾ࡅࡿ At-211 〇㐀”, ➨ 53 ᅇ࢔࢖ࢯࢺ࣮ࣉ࣭ᨺᑕ⥺◊✲Ⓨ⾲఍, ᩥி༊, 7 ᭶ (2016).
▮⣡ៅஓ, ⩚ሙᏹග, ᰘ⏣ㄔ୍, ᑠ᳃᭷ᕼᏊ, 㧗ᶫ࿴ஓ, బ⸨ᮃ, Ώ㑓៞Ꮚ, ⬥㇂㞝୍㑻, ᒣ⏣ᓫ⿱, ᯇᮏᖿ㞝, “⌮◊࡟࠾ࡅࡿ㡺ᕸ⏝⢭〇67
Cu ࡢ〇㐀㛤Ⓨ”, ➨ 53 ᅇ࢔࢖ࢯࢺ࣮ࣉ࣭ᨺᑕ⥺◊✲Ⓨ⾲఍, ᩥி༊, 7 ᭶ (2016).
⩚ሙᏹග, “▷ᑑ࿨ RI ౪⤥ࣉࣛࢵࢺࣇ࢛࣮࣒࡟ࡘ࠸࡚”, 2016 ᰾໬ᏛኟࡢᏛᰯ, ᚨᓥᕷ, 8 ᭶ (2016).
㰻⸨ⴌ⨾, ྜᕝṇᖾ, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, ࢧࣥࢻ࣮ࣝࢱ࣮࢝ࢳ, “169Tm ࡬ࡢ㔜㝧Ꮚධᑕ࡟࠾ࡅࡿ 169Yb ࡢ⏕ᡂ᩿㠃✚࡟ࡘ࠸࡚”, ᪥ᮏཎᏊຊᏛ఍ 2016 ᖺ⛅ࡢ኱఍, ஂ␃⡿ᕷ, 9 ᭶ (2016).
⳥Ọⱥᑑ, 㧗ᐑᖾ୍, ኱ᵳ໅, ⩚ሙᏹග, “48Cr ࡢ༙ῶᮇ⢭ᐦ ᐃ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
▮⣡ៅஓ, ⩚ሙᏹග, ᰘ⏣ㄔ୍, ᑠ᳃᭷ᕼᏊ, 㧗ᶫ࿴ஓ, Ώ㑓៞Ꮚ, ⬥㇂㞝୍㑻, ᒣ⏣⚅⿱, ᯇᮏᖿ㞝, “70Zn(d,Įn)67Cu ཯ᛂ࡟ࡼࡿ㡺ᕸ⏝⢭〇67
Cu ࡢ〇㐀”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
ຍ἞኱ဢ, ᳃ᮏᖾྖ, ⩚ሙᏹග, ⱝᯘὈ⏕, Ṋᒣ⨾㯇, ᒣᮌࡉࡸ࠿, ᑠ᳃᭷ᕼᏊ, ▮⣡ៅஓ, ᚋ⸨┿୍, “GARIS-II ࢆ⏝࠸ࡓ࣍ࢵࢺࣇ࣮ࣗࢪࣙ
ࣥ཯ᛂ 48Ca+238UЍ286Cn*࡟㛵ࡍࡿ◊✲”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
ᾏ⪁ཎ඘, ኱ᾆὈႹ, ⓑ஭┤ᶞ, 㭯⏣἞㞝, ᳃ཱྀ♸୍, ỌᕝᰤὈ, Ḉ஭᪼, ⩚ሙᏹග, ᯇᓮᾈஅ, ᒣᙧṊ㟹, Ọ஭ᑦ⏕, 㛵ᮏಇ, “ᮾ㟁⚟ᓥཎⓎ஦ᨾ┤ᚋ࡟᥇ྲྀࡉࢀࡓ኱Ẽᾋ㐟ሻヨᩱ୰ࡢ 129I/131I ẚ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
኱ᾆὈႹ, ᾏ⪁ཎ඘, ⓑ஭┤ᶞ, 㭯⏣἞㞝, ୰ᓥᫎ⮳, ᳃ཱྀ♸୍, ኱ཎ฼┾, ỌᕝᰤὈ, Ḉ஭᪼, ⩚ሙᏹග, ᯇᓮᾈஅ, “ᮾ㟁⚟ᓥཎⓎ஦ᨾ┤ᚋ࡟᥇ྲྀࡉࢀࡓ኱Ẽᾋ㐟ሻヨᩱࡢ࣮࢜ࢺࣛࢪ࢜ࢢࣛࣇ࡜ 129I/137Cs ẚ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶(2016).
ᑠ᳃᭷ᕼᏊ, ⩚ሙᏹග, ኱Ụ୍ᘯ, ㇏ᔱཌྐ, Ỉ㣫⛅⳯, బ⸨኱㍜, ᮏᒣᮤἋ, ▮⣡ៅஓ, Ώ㑓៞Ꮚ, బ⸨ᮃ, ᒣୗࡉࡸ࠿, ⏣୰Ὀ㈗, ຍ἞኱ဢ, ᳃ᮏᖾྖ, ᆏཱྀ⥤, ✄ᇉ⣧ᖹ, ⳥Ọⱥᑑ, 㔜Ἑඃ኱, ➟ᯇⰋᓫ, Jon Petter Omtvedt, “107 ␒ඖ⣲࣮࣒࣎ࣜ࢘ࡢ⁐ᾮ໬Ꮫ◊✲࡟ྥࡅࡓGARIS ࢞ࢫࢪ࢙ࢵࢺ⿦⨨࡟ࡼࡿ Re ྠ఩యࡢ〇㐀࡜ࣇ࣮ࣟ⁐፹ᢳฟჾࢆ⏝࠸ࡓ Re ࡢ࢜ࣥࣛ࢖ࣥᢳฟ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
⏣୰ᗣ௓, ⛅ᒣ࿴ᙪ, ⩚ሙᏹග, “໬Ꮫⓗ㑏ඖ཯ᛂࢆ⏝࠸ࡓ㔠ᒓෆໟࣇ࣮ࣛࣞࣥศ㞳ࡢ᮲௳᳨ウ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
బ⸨ᮃ, ▮⣡ៅஓ, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, ᰘ⏣ㄔ୍, Ώ㑓៞Ꮚ, ຍ἞኱ဢ, ㇏ᔱཌྐ, 㧗ᶫ࿴ஓ, ᯇᮏᖿ㞝, “⌮◊࡟࠾ࡅࡿ At-211 〇㐀”,
2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
᳃⏣ᾈ௓, ᳃ᮏᖾྖ, ຍ἞኱ဢ, ⩚ሙᏹග, “GARIS ࢆ⏝࠸ࡓ㉸㔜ඖ⣲◊✲ࡢ᭱๓⥺㸫᪂ඖ⣲ㄆᐃࡲ࡛ࡢ㐨ࡢࡾࠊ࿘ᮇ⾲ࡢᣑᙇࢆ┠ᣦࡋࡓᣮᡓ㸫”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
⩚ሙᏹග, “⌮◊ GARIS ࢆ⏝࠸ࡓ Sg ࢝ࣝ࣎ࢽࣝ㘒యࡢ᥹Ⓨᛶ◊✲”, 2016ࠕ㉸㔜ඖ⣲ࡢ⛉Ꮫࠖ◊✲఍, ᪂₲ᕷ, 9 ᭶ (2016).
ᑠ᳃᭷ᕼᏊ, “GARIS ࢆ⏝࠸ࡓ Sg ࡜ Bh ࡢ⁐ᾮ໬Ꮫ◊✲”, 2016ࠕ㉸㔜ඖ⣲ࡢ⛉Ꮫࠖ◊✲఍, ᪂₲ᕷ, 9 ᭶ (2016).
⩚ሙᏹග, “㉸㔜ඖ⣲ྜᡂ࡟㛵ࡍࡿ⌮◊ࡢᑗ᮶ィ⏬”, 2016ࠕ㉸㔜ඖ⣲ࡢ⛉Ꮫࠖ◊✲఍, ᪂₲ᕷ, 9 ᭶ (2016).
㧗ᶫ࿴ஓ, ༡Ṋᚿ, ୖᲄಙᙪ, ໭ᕝ㊰Ꮚ, Yu-Vin Sahoo, “◲㯤ྠ఩యẚศᯒ࡟ࡼࡿࠊ໭᪥ᮏ࡟⏘ฟࡍࡿཎἜ/࢔ࢫࣇ࢓ࣝࢺࡢ㆑ูࡢヨࡳ”, ᪥ᮏศᯒ໬Ꮫ఍ᖺ఍࣭➨ 65 ᖺ఍, ᮐᖠᕷ, 9 ᭶ (2016).
ᒸ㒊㥴ஓ, ⏣୰⨾✑, ᭷ᡃὒ㤶, 㧗᲍⩫, 㧗ᶫ࿴ஓ, “ࢩࣜ࢝ࢫࢣ࣮ࣝࡢ⏕ᡂᶵᵓࡢ㘽”, ᪥ᮏศᯒ໬Ꮫ఍ᖺ఍࣭➨ 65 ᖺ఍, ᮐᖠᕷ, 9 ᭶ (2016).
⩚ሙᏹග, “⌮◊ RIBF ࡟࠾ࡅࡿᛂ⏝◊✲⏝ RI ࡢ〇㐀”, ᮾி኱Ꮫ኱Ꮫ㝔ᕤᏛ⣔◊✲⛉ཎᏊຊᅜ㝿ᑓᨷ㧗ᶫ◊✲ᐊࢭ࣑ࢼ࣮, ᩥி༊, 10 ᭶(2016).
⩚ሙᏹග, “⌮◊ RIBF ࡟࠾ࡅࡿ་⒪⏝ RI 〇㐀ࡢ⌧≧࡜ᒎᮃ”, ➨ 56 ᅇ᪥ᮏ᰾་Ꮫ఍Ꮫ⾡⥲఍࣭➨ 36 ᅇ᪥ᮏ᰾་Ꮫᢏ⾡Ꮫ఍⥲఍Ꮫ⾡኱఍, ྡྂᒇᕷ, 11 ᭶ (2016).
M. Aikawa, M. Saito, S. Ebata, Y. Komori, and H. Haba, “Activation cross sections of alpha-induced reactions on natural zinc for 68Ge
production”, 2016 ᖺᗘ᰾ࢹ࣮ࢱ◊✲఍, ࡘࡃࡤᕷ, 11 ᭶ (2016).
᐀වᑗஅ, ᮏᮧಙ἞, ⚄㔝ఙ୍㑻, ୖ⏣┿ྐ, ⩚ሙᏹග, ྜྷᕝ㇏, Ᏻ஭⿱அ, ᴮᮏ⚽୍, “ᢠ⢾ᒀ⑓స⏝ࢆ᭷ࡍࡿள㖄㘒యࡢయෆືែ࡜໬Ꮫᙧ
ែࡢྠ᫬ゎᯒ”, ➨ 55 ᅇ᪥ᮏ⸆Ꮫ఍࣭᪥ᮏ⸆๣ᖌ఍࣭᪥ᮏ⑓㝔⸆๣ᖌ఍୰ᅜᅄᅜᨭ㒊Ꮫ⾡኱఍㸪ᒸᒣᕷ, 11 ᭶ (2016).
⩚ሙᏹග, “࠸࠿࡟ࡋ࡚ேᕤඖ⣲ࡣྜᡂࡉࢀࡓ࠿”, 2016 ᖺᗘ㸦➨ 62 ᅇ㸧ோ⛉グᛕㅮ₇఍, ᩥி༊, 12 ᭶ (2016).
Posters Presentations[International Conference etc.]
J. Inagaki, A. Sakaguchi, M. Inoue, A. Usui, H. Haba, T. Kashiwabara, S. Yamasaki, K. Sueki, and Y. Takahashi, “Fractionation of
zirconium-hafnium in ferromanganese crusts”, 26th Goldschmidt Conference, Yokohama, Japan, June (2016).
F. Ditrói, S. Takács, H. Haba, Y. Komori, M. Aikawa, Z. Szucs, and M. Saito, “Measurements of alpha particle induced reaction cross sections
on natCd and 116Cd for practical applications up to 50 MeV”, 12th European Conference on Accelerators in Applied Research andTechnology, Jyväskylä, Finland, July (2016).
H. Haba, F. Fan, D. Kaji, Y. Kasamatsu, H. Kikunaga, Y. Komori, N. Kondo, H. Kudo, K. Morimoto, K. Morita, M. Murakami, K. Nishio, K. Ooe,
Z. Qin, N. Sato, A. Shinohara, M. Takeyama, T. Tanaka, A. Toyoshima, K. Tsukada, Y. Wakabayashi, Y. Wang, S. Yamaki, S. Yano, Y.
Yasuda, T. Yokokita, and A. Yoneda, “Production and decay studies of 261Rf, 262Db, 265Sg, and 266Bh for superheavy element chemistry”, 9thInternational Conference on Nuclear and Radiochemistry (NRC9), Helsinki, Finland, Aug.–Sep. (2016).

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Ⅵ. RNC ACTIVITIES

Y. Komori, H. Haba, K. Ooe, A. Toyoshima, A. Mitsukai, M. Murakami, D. Sato, R. Motoyama, S. Yano, K. Watanabe, A. Sakaguchi, J.
Inagaki, H. Kikunaga, S. Wulff, and J. P. Omtvedt, “Development of a rapid solvent extraction apparatus for aqueous chemistry of theheaviest elements”, 9th International Conference on Nuclear and Radiochemistry (NRC9), Helsinki, Finland, Aug.–Sep. (2016).
L. Lens, A. Yakushev, Ch. E. Düllmann, M. Asai, M. Block, H. M. David, J. Despotopulos, A. Di Nitto, K. Eberhardt, M. Götz, S. Götz, H. Haba,
L. Harkness-Brennan, F. P. Heßberger, R.-D. Herzberg, D. Hinde, J. Hoffmann, A. Hübner, E. Jäger, D. Judson, J. Khuyagbaatar, B.
Kindler, Y. Komori, J. Konki, J. V. Kratz, J. Krier, N. Kurz, M. Laatiaoui, S. Lahiri, B. Lommel, M. Maiti, A. K. Mistry, C. Mokry, K. Moody, Y.
Nagame, J. P. Omtvedt, P. Papadakis, V. Pershina, D. Rudolph, J. Runke, M. Schädel, P. Scharrer, T. Sato, D. Shaughnessy, B.
Schausten, J. Steiner, P. Thörle-Pospiech, N. Trautmann, K. Tsukada, J. Uusitalo, A. Ward, M. Wegrzecki, E. Williams, N. Wiehl, and V.
Yakusheva, “Single-atom flerovium chemistry at TASCA”, 9th International Conference on Nuclear and Radiochemistry (NRC9), Helsinki,
Finland, Aug.–Sep. (2016).
A. Yokoyama, Y. Kitayama, Y. Fukuda, H. Kikunaga, M. Murakami, Y. Komori, S. Yano, H. Haba, K. Tsukada, and A. Toyoshima, “Extraction
behavior of rutherfordium as a cationic fluoride complex with a TTA chelate extractant from HF/HNO3 acidic solutions”, 9th International
Conference on Nuclear and Radiochemistry (NRC9), Helsinki, Finland, Aug.–Sep. (2016).
Y. Komori, M. Murakami, and H. Haba, “Measurement of production cross sections of Tc isotopes in deuteron-induced reactions on natMo up
to 24 MeV”, 9th International Conference on Nuclear and Radiochemistry (NRC9), Helsinki, Finland, Aug.–Sep. (2016).
[Domestic Conference]ᒣ⏣ுᖹ, ኱Ụ୍ᘯ, ᚋ⸨┿୍, ᕤ⸨ஂ᫛, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, “ࣇ࣮ࣟ࢖ࣥࢪ࢙ࢡࢩࣙࣥศᯒἲࢆ฼⏝ࡋࡓ 4 ᪘ඖ⣲ ZrࠊHf ࡢ࣮࢟ࣞࢺᢳ
ฟ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
኱Ụ୍ᘯ, ᒣ⏣ுᖹ, ᚋ⸨┿୍, ᕤ⸨ஂ᫛, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, “Rf ࡢྠ᪘ඖ⣲ ZrࠊHf ࡢ 4-࢖ࢯࣉࣟࣆࣝࢺ࣏ࣟࣟࣥࢆ⏝࠸ࡓ⁐፹ᢳฟᣲື”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
బ⸨኱㍜, ᮧୖᫀྐ, ኱Ụ୍ᘯ, ᮏᒣᮤἋ, ⩚ሙᏹග, ᑠ᳃᭷ᕼᏊ, ㇏ᔱཌྐ, Ỉ㣫⛅⳯, ⳥Ọⱥᑑ, ᚋ⸨┿୍, ᕤ⸨ஂ᫛, “5 ᪘ඖ⣲ Nb, Ta ࡢࣇࢵ໬Ỉ⣲㓟࠿ࡽࡢ Aliquat 336 ᶞ⬡࡬ࡢᢳฟ㸸ศ㓄ಀᩘࡢᢳฟ๣⃰ᗘ౫Ꮡᛶࡢ᳨ウ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
ᮏᒣᮤἋ, ኱Ụ୍ᘯ, ᮧୖᫀྐ, ⩚ሙᏹග, ᚋ⸨┿୍, ᕤ⸨ஂ᫛, “5 ᪘ඖ⣲ Nb, Ta ࡢሷ㓟⁐ᾮ࠿ࡽࡢࢺࣜ࢖ࢯ࢜ࢡࢳࣝ࢔࣑ࣥ࡟ࡼࡿ⁐፹ᢳฟ㸫Ta ࢺ࣮ࣞࢧ࣮ㄪ〇ἲࡢᙳ㡪㸫”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
Ỉ㣫⛅⳯, ㇏ᔱཌྐ, ᑠ᳃᭷ᕼᏊ, ⩚ሙᏹග, ὸ஭㞞ே, ሯ⏣࿴᫂, బ⸨ဴஓ, Ọ┠ㅍ୍㑻, “ࣇ࣮ࣟᢳฟ⿦⨨ࢆ⏝࠸ࡓࣇࢵ໬Ỉ⣲㓟㸫
Aliquat336 ⣔࡟࠾ࡅࡿࢱࣥࢢࢫࢸࣥࡢ⁐፹ᢳฟ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
㇏ᔱཌྐ, ⚄⏣᫭඘, ụ⏣༟ᾏ, ྜྷᮧᓫ, ⠛ཎཌ, ▮⣡ៅஓ, ᑠ᳃᭷ᕼᏊ, ⩚ሙᏹග, “࢔ࢫࢱࢳࣥࡢ㓟໬㑏ඖ࡜⁐፹ᢳฟᣲື”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶ (2016).
⚄ཎṇ, ྜྷ⏣ᩔ, ⩚ሙᏹග, “㝧㟁Ꮚᨺฟ᰾✀࡟ࡼࡿᅇ㌿య᳨ᰝἲࡢ㛤Ⓨ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲ᕷ, 9 ᭶(2016).

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
User Liaison and Industrial Cooperation Group
1. Abstract
The essential mission of the “User Liaison and Industrial Cooperation (ULIC) Group” is to maximize the research activities of RIBF
by attracting users in various fields with a wide scope.
The ULIC Group consists of two teams.
The RIBF User Liaison Team provides various supports to visiting RIBF users through the User’s Office. The Industrial Cooperation
Team supports potential users in industries who use the beams for application purposes or for accelerator related technologies other thanbasic research. Production of various radioisotopes by the AVF cyclotron is also one of the important mission. The produced radioisotopes
are distributed to researchers in Japan for a charge through the Japan Radioisotope Association.
In addition the ULIC Group takes care of laboratory tours for RIBF visitors from public. The numbers of visitors amounts to 2,300 per
year.

Members
Group Director
Hideyuki SAKAI
Special Temporary Employee
Tadashi KAMBARA
Senior Visiting Scientists
Ikuko HAMAMOTO (Lund Univ.)

Munetake ICHIMURA (Univ. of Tokyo)

Assistants
Katsura IWAI
Tomoko IWANAMI
Noriko KIYAMA

Tomomi OKAYASU
Yoko FUJITA
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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESRIBF Research Division
User Liaison and Industrial Cooperation GroupRIBF User Liaison Team (User Support Office)
1. Abstract
To enhance synergetic common use of the world-class accelerator facility, the Radioisotope Beam Factory (RIBF), it is necessary to
promote a broad range of applications and to maximize the facility’s importance. The facilitation and promotion of the RIBF are importantmissions charged to the team. Important operational activities of the team include: i) the organization of international Program Advisory
Committee (PAC) meetings to review experimental proposals submitted by RIBF users, ii) RIBF beam-time operation management, andiii) promotion of facility use by hosting outside users through the RIBF Independent Users program, which is a new-user registration
program begun in FY2010 at the RIKEN Nishina Center (RNC) to enhance the synergetic common use of the RIBF. The team opened the
RIBF Users Office in the RIBF building in 2010, which is the main point of contact for Independent Users and provides a wide range ofservices and information.

2. Major Research Subjects(1)(2)

Facilitation of the use of the RIBF
Promotion of the RIBF to interested researchers

3. Summary of Research Activity(1) Facilitation of the use of the RIBF
The RIBF Users Office, formed by the team in 2010, is a point of contact for user registration through the RIBF Independent User
program. This activity includes:
registration of users as RIBF Independent Users,
registration of radiation workers at the RIKEN Wako Institute,provision of an RIBF User Card (a regular entry permit) and an optically stimulated luminescence dosimeter for each RIBF
Independent User, andprovision of safety training for new registrants regarding working around radiation, accelerator use at the RIBF facility, andinformation security, which must be completed before they begin RIBF research.
The RIBF Users Office is also a point of contact for users regarding RIBF beam-time-related paperwork, which includes:contact for beam-time scheduling and safety review of experiments by the In-House Safety Committee,
preparation of annual Accelerator Progress Reports, andmaintaining the above information in a beam-time record database.
In addition, the RIBF Users Office assists RIBF Independent Users with matters related to their visit, such as invitation procedures,visa applications, and the reservation of on-campus accommodation.
(2) Promotion of the RIBF to interested researchers
The team has organized an international PAC for RIBF experiments; it consists of leading scientists worldwide and reviews
proposals in the field of nuclear physics (NP) purely on the basis of their scientific merit and feasibility. The team also assists
another PAC meeting for material and life sciences (ML) organized by the RNC Advanced Meson Laboratory. The NP and ML PAC
meetings are organized twice a year.
The team coordinates beam times for PAC-approved experiments and other development activities. It manages the operatingschedule of the RIBF accelerator complex according to the decisions arrived at by the RIBF Machine Time Committee.
To promote research activities at RIBF, proposals for User Liaison and Industrial Cooperation Group symposia/mini-workshops are
solicited broadly both inside and outside of the RNC. The RIBF Users Office assists in the related paperwork.
The team is the point of contact for the RIBF users’ association. It arranges meetings at RNC headquarters for the RIBF User
Executive Committee of the users’ association.
The Team conducts publicity activities, such as arranging for RIBF tours, development and improvement of the RNC official web
site, and delivery of RNC news via email and the web.

Members
Team Leader
Ken-ichiro YONEDA
Deputy Team Leader
Yasushi WATANABE (concurrent: Senior Research Scientist,
Radiation Lab.)
Technical Staff I
Narumasa MIYAUCHI- 434 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
User Liaison and Industrial Cooperation Group
Industrial Cooperation Team
1. Abstract
Industrial cooperation team handles non-academic activities at RIBF corresponding to industries and to general public.

2. Major Research Subjects
(1)
(2)
(3)

Fee-based distribution of radioisotopes produced at RIKEN AVF Cyclotron
Support of industrial application using the RIBF accelerator beam and its related technologies including novel industrial
applications.
Development of real-time wear diagnostics of industrial material using RI beams

3. Summary of Research Activity(1) Fee-based distribution of radioisotopes
This team has been handling fee-based distribution of radioisotopes since 2007. Radionuclides of Zn-65, Sr-85, Y-88 and Cd-109,
which are produced by the RI application team at the AVF cyclotron, are distributed to nonaffiliated users under a Material Transfer
Agreement (MTA) between Japan Radioisotope Association and RIKEN. In 2016, we delivered 2 shipments of Cd-109 with a total activityof 12 MBq, 5 shipments of Zn-65 with a total activity of 24 MBq, 2 shipments of Y-88 with an activity of 2 MBq and one shipment of
Sr-85 with an activity of 1 MBq. The final recipients of the RIs were seven universities and one hospital.
(2) Support of Industrial application using RIBF
RNC promotes facility-sharing program “Promotion of applications of high-energy heavy ions and RI beams”. In this program, RNC
opens the old part of the RIBF facility, which includes the AVF cyclotron, RILAC, RIKEN Ring Cyclotron and experimental instruments,
to non-academic proposals from users including private companies. The proposals are reviewed by a program advisory committee,
industrial PAC (InPAC). The proposals which have been approved by the InPAC are allocated with beam times and the users pay RIKEN
the beam time fee. The intellectual properties obtained by the use of RIBF belong to the users. In order to encourage the use of RIBF by
those who are not familiar with utilization of ion beams, the first two beam times of each proposal can be assigned to trial uses which arefree of beam time fee.
The sixth InPAC meeting held in January 2017 reviewed two fee-based proposals from private companies and approved them. Until
now, five proposals of fee-based utilization from three private companies have been performed. Private companies used heavy-ion beams of
Ar-40 (95 MeV/A) and Kr-84 (70 MeV/A) at the E5A beamline for an irradiation test of space-use semi-conductors in the atmosphere. For
future users, we have developed higher LET beams of Xe-136 (39 MeV/A) and Au-197 (18.4 MeV/A) at the same beamline.
(3) Development of real-time wear diagnostics using RI beams
We are developing a method to determine the spatial distribution of gamma-ray emitting RIs on periodically-moving objects, named“GIRO” (Gamma-ray Inspection of Rotating Object), that is based on the same principle as the medical PET imaging but is simpler and lessexpensive. This method can be used for real-time inspection of a closed system in a running machine. In 2016, the scintillation detectors
were replaced by new ones and the gamma-ray collimators were modified on the test bench. We also tried single-photon emission computer
tomography (SPECT) mode measurement.

Members
Team Leader
Atsushi YOSHIDA
Contract Researcher
Tadashi KAMBARA
Technical Staff I
Shinya YANOU (concurrent: RI Application Team)

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
A.Yoshida, T.Kambara, A.Nakao, R.Uemoto, H.Uno, A.Nagano, H.Yamaguchi, T.Nakao, D.Kahl, Y.Yanagisawa, D.Kameda, T.Ohnishi ,N.Fukuda, T.Kubo, “Wear diagnostics of industrial material using RI beams of 7Be and 22Na”, Nuclear Instruments and Methods in Physics
Research Section B 317, 785-788 (2013) *T. Kambara, A. Yoshida, H. Takeichi, "Gamma-ray inspection of rotating object", Nuclear Instruments and Methods in Physics Research A
797, 1-7 (2015) *.
T. Kambara, “Gamma-Ray Inspection of Rotating Object (GIRO)”, Nuclear Physics News Vol. 26, No.4, 26-29 (2016).

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES[Proceedings](Original Papers) *Subject to Peer Review
T. Kambara, A. Yoshida, Y. Yanagisawa, D. Kameda, N. Fukuda, T. Ohnishi, T. Kubo, R. Uemoto, A. Nagano, and H. Uno, ”Industrial
Application of Radioactive Ion Beams at the RIKEN RI Beam Factory”, AIP Conference Proceedings 1412 (2011), American Institute ofPhysics *[Book](Original Papers) *Subject to Peer Review
A. Yoshida, T. Kambara, R. Uemoto, “RI ࣅ࣮࣒ᡴ㎸ࡳἲࢆ⏝࠸ࡓᦶ⪖᳨ᰝἲࡢ㛤Ⓨ“, ᭶หࢺࣛ࢖࣎ࣟࢪ࣮2014-08 No324 pg.16-18,᪂ᶞ♫(2014)
A. Yoshida, T. Kambara, “◊✲ᐊ⤂௓ No.43 ⌮໬Ꮫ◊✲ᡤோ⛉ຍ㏿ჾ◊✲ࢭࣥࢱ࣮⏘ᴗ㐃ᦠࢳ࣮࣒“, ᭶หࢺࣛ࢖࣎ࣟࢪ࣮2015-02 No330
pg.66,᪂ᶞ♫(2014)
T. Kambara, "RI ࣅ࣮࣒↷ᑕࢆ⏝࠸ࡓᦶ⪖ヨ㦂", ຍ㏿ჾ Vol. 12, No. 4(2015)
Oral Presentations[International Conference etc.]
T. Kambara, et al., “Industrial Application of Radioactive Ion Beams at the RIKEN RI Beam Factory”, 11th International Conference on
Applications of Nuclear Techniques, Crete, Greece, Jun (2011)
A.Yoshida, et al., “Wear diagnostics of industrial material using RI beams of 7Be and 22Na”, 16th International Conference on
Electromagnetic Iso-tope Separators and Techniques Related to their Applications (EMIS2012), Matsue, Dec.(2012)[Domestic Conference]
A.Yoshida, “RI ࣅ࣮࣒ࡢᕤᴗᛂ⏝㸫 ⾲㠃ᦶ⪖㔞᳨ᰝἲ㛤Ⓨ“, ⌮◊ࢩ࣏ࣥࢪ࣒࢘➨ 16 ᅇࠕࢺࣛ࢖࣎ࢥ࣮ࢸ࢕ࣥࢢࡢ⌧≧࡜ᑗ᮶ࠖ, (ࢺࣛ࢖࣎ࢥ࣮ࢸ࢕ࣥࢢᢏ⾡◊✲఍୺ദ), ࿴ග, 2 ᭶ (2014).
A.Yoshida, “⌮◊ RI ࣅ࣮࣒ࣂ࢚ࣛࢸ࢕㸦⏘ᴗ฼⏝ࡲ࡛㸧“, ➨ 54 ᅇᨺᑕ⥺⛉Ꮫ◊✲఍(࢚࢟ࢰࢳࢵࢡࣅ࣮࣒ࢩ࣮ࣜࢬ<12>), ኱㜰ࢽ࣮ࣗࢡࣜ
࢔ࢧ࢖࢚ࣥࢫ༠఍, ኱㜰, 7 ᭶(2014).
T. Kambara, "࢖࢜ࣥ↷ᑕ࡟ࡼࡿᮦᩱᨵ㉁࡜ᦶ⪖ヨ㦂", ᪥ᮏ≀⌮Ꮫ఍ ᖺḟ኱఍, ᮾ໭Ꮫ㝔኱Ꮫ ௝ྎ, 03/19-22 (2016)
Posters Presentations[Domestic Conference]
A. Yoshida, T. Kambara, “㹐㹇ࣅ࣮࣒࡛࢜ࣥࣛ࢖ࣥ⢭ᐦᦶ⪖㔞 ᐃ㹼ᦶ⪖ࡢ࢖࣓࣮ࢪࣥࢢ㹼“, nano tech 2016 ➨ 15 ᅇᅜ㝿ࢼࣀࢸࢡࣀࣟࢪ࣮
⥲ྜᒎ࣭ᢏ⾡఍㆟, 01/27-29, ᮾிࣅࢵࢢࢧ࢖ࢺ, (2016)
T. Kambara, A. Yoshida, H. Haba, “㝧㟁Ꮚᨺฟ᰾✀࡟ࡼࡿᅇ㌿య᳨ᰝἲࡢ㛤Ⓨ”, 2016 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍࣭➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲኱Ꮫ,
09/10-12,(2016)- 436 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

RIBF Research Division
Safety Management Group
1. Abstract
The RIKEN Nishina Center for Accelerator-Based Science possesses one of the largest accelerator facilities in the world, which
consists of two heavy-ion linear accelerators and five cyclotrons. This is the only site in Japan where uranium ions are accelerated. The
center also has electron accelerators of microtron and synchrotron storage ring. Our function is to keep the radiation level in and around thefacility below the allowable limit and to keep the exposure of workers as low as reasonably achievable. We are also involved in the safety
management of the Radioisotope Center, where many types of experiments are performed with sealed and unsealed radioisotopes.

2. Major Research Subjects
(1)
(2)
(3)

Safety management at radiation facilities of Nishina Center for Accelerator-Based Science
Safety management at Radioisotope Center
Radiation shielding design and development of accelerator safety systems

3. Summary of Research Activity
Our most important task is to keep the personnel exposure as low as reasonably achievable, and to prevent an accident. Therefore, wedaily patrol the facility, measure the ambient dose rates, maintain the survey meters, shield doors and facilities of exhaust air andwastewater, replenish the protective supplies, and manage the radioactive waste. Advice, supervision and assistance at major accelerator
maintenance works are also our task.
The radioactive argon gas in the RIBF experimental rooms was reduced by a partition. The argon gas was generated at around thetarget and beam dump, and it diffuse to experimental rooms slightly by air circulation. We installed an air partition tentatively. The air flow
and the radioactive gas was successfully restricted.
We measured the radiation level and shielding power in the RILAC irradiation room. The RILAC accelerator will be upgraded andadditional shield be required. The amount of the shield was estimated by this evaluation.
Minor improvements of the radiation safety systems were also done, for example, part of the radiation control system at RIBF building
was renewed because it was developed by old programming language. The radiation monitors at the Nishina building has been replaced
annually from 2015 because they get older, which were installed in 1986.

Members
Group Director
Yoshitomo UWAMINO
Deputy Group Director
Kanenobu TANAKA
Nishina Center Technical Scientists
Rieko HIGURASHI
Hisao SAKAMOTO

Takeshi MAIE (concurrent; Cryogenic Technology Team)Technical Staff I
Atsuko AKASHIO

Tomoyuki DANTSUKA (concurrent; Cryogenic Technology
Team)

Research Consultant
Masaharu OKANO (Japan Radiation Res. Soc.)
Visiting Scientists
Hee Seock LEE (POSTECH)
Joo-Hee OH (POSTECH))
Nam-Suk JUNG (POSTECH)
Takashi NAKAMURA (Shimizu Corp.)
Noriaki NAKAO (Shimizu Corp.)

Koji OHISHI (Shimizu Corp.)
Arim LEE (Pohang Accelerator Laboratory POSTECH)
Nobuhiro SHIGYO (Kyushu Univ.)

Student Trainees
Kentaro SUGIHARA
Assigned Employee
Hiroki MUKAI
Temporary Staffing
Ryuji SUZUKI- 437 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESPart-time Workers
Hiroshi KATO
Satomi IIZUKA
Kimie IGARASHI
Hiroko AISO

Naoko USUDATE
Shin FUJITA
Yukiko SHIODA

Assistant
Tomomi OKAYASU (concurrent: User Liaison and Industrial
Cooperation Group)

List of Publications & Presentations
Oral Presentations[International Conference etc.]
Akashio, A., Tanaka, K., Imao, H., and Uwamino Y.: “Activation measurement by 238U beam irradiation around 11A MeV on He gas”, 13th
International Conference on Radiation Shielding & 19th Topical Meeting of the Radiation Protection & Shielding Division of the Ameriacn
Nuclear Society 2016 (ICRS13-RPSD2016), Paris, France, October (2016).
Oh, J., Jung, N., Lee, H., Oranj, L., Nakao, N., Uwamino, Y. and Ko S.: “Neutron Production from thin Be target irradiated by 50 MeV/u 238U
beam.”, 13th International Conference on Radiation Shielding & 19th Topical Meeting of the Radiation Protection & Shielding Division of theAmeriacn Nuclear Society 2016 (ICRS13-RPSD2016), Paris, France, October (2016).
[Domestic Conference]⏣୰㚝ಙ: "⌮໬Ꮫ◊✲ᡤ RI ࣅ࣮࣒ࣇ࢓ࢡࢺ࣮ࣜຍ㏿ჾ᪋タࡢ⥭ᛴ᫬ᑐᛂ”, ➨㸲ᅇຍ㏿ჾ᪋タᏳ඲ࢩ࣏ࣥࢪ࣒࢘, ᮾᾏᮧ, 1 ᭶,(2017).
㉥ሷᩔᏊ, ⏣୰㚝ಙ, ௒ᑿ ᾈኈ: “RIBF ຍ㏿ჾ࡟࠾ࡅࡿ࣒࣊ࣜ࢘࢞ࢫ࡬ࡢ࢘ࣛࣥࣅ࣮࣒ 11MeV/u ↷ᑕ࡟ࡼࡿᨺᑕ໬ホ౯”, ᪥ᮏཎᏊຊᏛ఍
2017 ᖺ᫓ࡢᖺ఍, •༡, 3 ᭶ (2016).
⏣୰㚝ಙ: “PHITS ࢆ⏝࠸ࡓ RI ࣅ࣮࣒ࣇ࢓ࢡࢺ࣮ࣜ㔜࢖࢜ࣥຍ㏿ჾ᪋タࡢᨺᑕ⥺ᙳ㡪ホ౯”, PHITS ◊✲఍, ⇕ᾏ, 9 ᭶ (2016).

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Partner Institutions
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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESPartner Institution
Center for Nuclear Study, Graduate School of Science
The University of Tokyo
1. Abstract㻌 㻌 The Center for Nuclear Study (CNS) aims to elucidate the nature of nuclear system by producing the characteristic states where theIsospin, Spin and Quark degrees of freedom play central roles. These researches in CNS lead to the understanding of the matter based oncommon natures of many-body systems in various phases. We also aim at elucidating the explosion phenomena and the evolution of theuniverse by the direct measurements simulating nuclear reactions in the universe. In order to advance the nuclear science with heavy-ion
reactions, we develop AVF upgrade, CRIB and SHARAQ facilities in the large-scale accelerators laboratories RIBF. We started a new
project OEDO for a new energy-degrading scheme, where a RF deflector system is introduced to obtain a good quality of low-energy beam.
In 2016, a new group for fundamental symmetry has been added. We promote collaboration programs at RIBF as well as RHIC-PHENIX
and ALICE-LHC with scientists in the world, and host international meetings and conferences. We also provide educational opportunities toyoung scientists in the heavy-ion science through the graduate course as a member of the department of physics in the University of Tokyoand through hosting the international summer school.

2. Major Research Subjects
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)

Accelerator Physics
Nuclear Astrophysics
Nuclear spectroscopy of exotic nuclei
Quark physics
Nuclear Theory
OEDO/SHARAQ project
Exotic Nuclear Reaction
Low Energy Nuclear Reaction Group
Active Target Development
Fundamental Physics

3. Summary of Research Activity(1) Accelerator Physics
One of the major tasks of the accelerator group is the AVF upgrade project that includes development of ion sources, upgrading the AVF
cyclotron of RIKEN and the beam line to CRIB. Development of ECR heavy ion source is to provide new HI beams, higher and stable beams
of metallic ions, and to improve the control system. The Hyper ECR and the Super ECR sources provide all the beams for the AVF cyclotron
and support not only CRIB experiments but also a large number of RIBF experiments. Injection beam monitoring and control are being
developed and studied in order to measure four-dimensional emittance. Detailed studies of the optics from the ion sources in consideration of
the space charge effect are expected to improve transmission and qualities of beams for the RIBF facility. In 2016, The beam intensities ofsome light ions accelerated by AVF cyclotron have been doubled by improving the extraction system of the Hyper ECR.
(2) Nuclear Astrophysics
The nuclear astrophysics group in CNS is working for experimental studies with the low-energy RI beam separator CRIB. In FY2016,
experiments on the alpha-cluster structure in the 22Mg nucleus, 7Be(n, D)/(n, p) astrophysical reactions using the Trojan Horse method,
production of 7Be-implanted target, and the proton resonant scattering experiment with 26Al isomeric beam were performed at CRIB underinternational collaborations including Korean, Italian, UK, and Chinese groups. The isomeric 26Al beam production at CRIB was for the firsttime, and a high isomeric purity of over 30% was achieved. A strong indication of an exotic linear-chain cluster structure in 14C nucleus waspresented based on the 10Be+Dresonant scattering experiment previously performed at CRIB.
(3) Nuclear structure of exotic nuclei㻌㻌
The NUSPEQ (NUclear SPectroscopy for Extreme Quantum system) group studies exotic structures in high-isospin and/or high-spinstates in nuclei. The CNS GRAPE (Gamma-Ray detector Array with Position and Energy sensitivity) is a major apparatus forhigh-resolution in-beam gamma-ray spectroscopy. Missing mass spectroscopy using the SHARAQ is used for another approach on exotic
nuclei. In 2016, the following progress has been made.
Experimental data taken in 2013 under the EURICA collaboration has been analyzed for studying octupole deformation in neutron-rich
Ba isotopes and preparing publication. Exothemic charge exchange reaction (8He,8Li*(1+)) on 4He has been analyzed for studying
spin-dipole response of few-body system on the photon line. A new experiment measuring the 4He(8He,8Be)4n reaction was performed
for better statistics and better accuracy in order to verify a candidate of the ground state of the tetra neutrons just above the 4n threshold,which is under analysis.
A DAQ system for the CNS GRAPE was upgraded, where event building system is included for several digitizing modules based on
sampling ADCs and FPGAs on boards.

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)(4) Quark Physics
Main goal of the quark physics group is to understand the properties of hot and dense nuclear matter created by colliding heavy nuclei
at relativistic energies. The group has been involved in the PHENIX experiment at Relativistic Heavy Ion Collider (RHIC) at Brookhaven
National Laboratory, and the ALICE experiment at Large Hadron Collider (LHC) at CERN. As for ALICE, the group has involved in thedata analyses, which include the measurement of low-mass lepton pairs in Pb-Pb and p-Pb collisions, heavy flavor baryon measurements in
pp and p-Pb collisions, particle correlations with large rapidity gap in p-Pb collisions, and searches for dibaryons in Pb-Pb collisions. The
group has involved in the ALICE-TPC upgrade using a Gas Electron Multiplier (GEM). New readout chip of the TPC upgrade, called as
SAMPA, was tested and development of the new data readout system for the TPC upgrade, which aims online data processing by utilizing
FPGA and GPU, has begun in 2016.

(5) Nuclear Theory
The nuclear theory group participate a project, “Priority Issue 9 to be tackled by using the Post-K Computer” and promotes computational
nuclear physics utilizing supercomputers. In 2016, we revealed the quantum phase transition of nuclear shape in neutron-rich Zr isotopes by
the Monte Carlo shell model. In parallel, we have been promoting the CNS-RIKEN collaboration project on large-scale nuclear structure
calculations and performed shell-model calculations under various collaborations with many experimentalists for investing the exotic
structure of neutron-rich nuclei, such as 38,40P, 48Ca, 55Ca, 128Cd, and 132Sn.
(6) OEDO/SHARAQ project
The OEDO/SHARAQ group pursues experimental studies of RI beams by using the high-resolution beamline and the SHARAQ
spectrometer. A mass measurement by TOF-Brho technique for very neutron-rich calcium isotopes around N=34 was successfully performed.
The parity-tansfer charge exchange (16O, 16F) was studied, since the reaction is expected to probe the 0- strength in nuclei. The result of thestudy was recently published. The OEDO project, which is a major upgrade of the high-resolution beamline for RI beams with energies lower
than 100 MeV/u, is ongoing. The beam line has been constructed in March 2017. The commissioning of the energy degrading scheme isscheduled in June 2017.
(7) Exotic Nuclear Reaction
The Exotic Nuclear Reaction group studies various exotic reactions induced by beams of unstable nuclei. One subject isinverse-kinematics (p,n) reaction. In 2016 a set of neutron counters PANDORA was developed and an in-beam test was performed.
Candidate nuclei to study is high spin isomers such as 52Fe(12+). Development of isomer beam was carried out at HIMAC.
(8) Low Energy Nuclear Reaction GroupA new measurement of the isobaric analog resonances of RRC31 was analyzed. Due to the low production yield of 34Si beam from
48Ca at 64 MeV/nucleon which was 1 orders magnitudes smaller than the estimation of EPAX-2.15, we couldn’t improve the excitation

function though the experimental result was observed to be consistent with the previous measurement.
For the development of the exotic targets, the feasibility study of Ti-3H was carried out by making a thin Ti-2H target. The 2H in the
Ti-2H target will desorb when the target is heated upto above 300 degrees in Celsius. As far as the target temperature is kept below 100
degrees, erosion of 3H from Ti-3H will be 0. Activity measurement after 20Ne beam of 8.2 MeV/nucleon on the Ti-2H target, any strong
activity was not measured, meaning that Toyama Univ can decommission the target after the campaign of the experiments. A thin andhigher concentration ratio of the target have been also under testing.
Single-crystal (sc) diamond detector is considered as a next-generation semiconductor detector. We found that the pulse height defect forfission fragments of 252Cf was almost saturated with the electric field of 2 V/Pm.
(9) Active Target Development
Two types of gaseous active target TPCs called GEM-MSTPC and CATs are developed and used for the missing mass spectroscopy. A
new resonance in 30S has been observed via the study of alpha inelastic scattering using GEM-MSTPC. The data analysis of astrophysicalreaction (D, p) on 18Ne and 22Mg and the E-decay of 16Ne followed by D emmision. The study of Equation of State of nuclear matter using
CATs is ongoing. The data analysis of deuteron inelastic scattering on 15,16O and 132Xe measured at HIMAC by using CAT-S is in progress.
The measurement of giant monopole resonance in 132Sn by using CAT-S has been done at RIBF in April, 2016. Larger volume active target
CAT-M is being developed aiming at 10-times larger yield.
(10) Fundamental Physics
To investigate the matter-antimatter asymmetry (CP violation) in the universe, and to understand the CP violating components in thefundamental interactions, the experimental project to search for the electric dipole moment (EDM) of the 210Fr is going on. The thermal
ionizer to produce the 210Fr with fusion reaction, an optical lattice to accumulate the cooled atoms, and an atomic interferometer to measure
the frequency of the spin precession of 210Fr are ready now. The yield of the Fr ions with 106 Fr+/s has been achieved, and the improvementof the trapping efficiency to get the high intensity cooled Fr atoms will be done by upgrading the laser optics.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESMembers
Director
Susumu SHIMOURA
Scientific Staff
Susumu SHIMOURA (Professor)
Yasuhiro SAKEMI (Professor)
Kentaro YAKO (Associate Professor)
Nobuaki IMAI (Associate Professor)
Noritaka SHIMIZU (Project Associate Professor)
Guest Scientists
Yutaka UTSUNO (Guest Associate Professor)

Hidetoshi YAMAGUCHI (Lecturer)
Shin'ichiro MICHIMASA (Assistant Professor)
Taku GUNJI (Assistant Professor)
Shinsuke OTA (Assistant Professor)

Yutaka MIZOI (Guest Associate Professor)

Technical Staff
Yasuteru KOTAKA
Techinical Assistants
Yukimitsu OHSHIRO
Mamoru KATAYANAGI
Reiko KOJIMA

Kazuyuki YOSHIMURA
Hiroshi KUREI㻌㻌㻌
Project Research Associates
Tooru YOSHIDA
Olga BELIUSKINA
Post Doctoral Associates
Yosuke WATANABE
Philipp SCHROCK
Laszlo STUHL
Masanori DOZONO

Seiya HAYAKAWA
Chihiro IWAMOTO
Lei YANG
Rin YOKOYAMA

Graduate Students
Hiroshi TOKIEDA
Yuko SEKIGUCHI
Yuki YAMAGUCHI
Ryo NAKAJIMA
Keita KAWATA
Noritaka KITAMURA
Hideki SHIMIZU

Motonobu TAKAKI
Motoki KOBAYASHI
Soichiro MASUOKA
Shinichi HAYASHI
Kohei TERASAKI
Keijiro ABE

Administration Staff
Mikio OKI
Takako ENDO
Yuko SOMA

Ikuko YAMAMOTO
Yukino KISHI

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
S. Hayakawa, S. Kubono, D. Kahl, H. Yamaguchi, D.N. Binh, T. Hashimoto, Y. Wakabayashi, J.J. He, N. Iwasa, S. Kato, T. Komatsubara,
Y.K. Kwon, T. Teranishi, ``First direct measurement of the 11C(alpha, p)14N stellar reaction by an extended thick-target method'', Physical.
Review. C 93, 065802 (2016). *H. Yamaguchi, D. Kahl, S. Hayakawa, Y. Sakaguchi, K. Abe, T. Nakao, T. Suhara, N. Iwasa, A. Kim, D.H. Kim, S.M. Cha, M.S. Kwag, J.H.
Lee, E.J. Lee, K.Y. Chae, Y. Wakabayashi, N. Imai, N. Kitamura, P. Lee, J.Y. Moon, K.B. Lee, C. Akers, H.S. Jung, N.N. Duy, L.H. Khiem,
and C.S. Lee, ``Experimental investigation of linear-chain structured nucleus in 14C'', Physics Letters B 766,11 (2017). *L. Yang, C.J. Lin, H.M. Jia, D.X. Wang, L.J. Sun, N.R. Ma, F. Yang, Z.D. Wu, X.X. Xu, H.Q. Zhang, Z.H. Liu, and P.F. Bao, ``Optical model
potentials for 6He+64Zn from 63Cu(7Li,6He)64Zn reactions'', Physical Review C 95, 034616 (2017). *R. G. Pizzone, G. D'Agata, M. La Cognata, I. Indelicato, C. Spitaleri, S. Blagus, S. Cherubini, P. Figuera, L. Grassi, G. L. Guardo, M. Gulino,
S. Hayakawa, R. Kshetri, L. Lamia,M. Lattuada, T. Mijatovic, M. Milin, D.H. Miljanic D., L. Prepolec, G. G. Rapisarda, S. Romano, M. L.
Sergi, N. Skukan, N. Soic, V. Tokic, A. Tumino, and M. Uroic, ``First Measurement of the 19F(alpha,p)22Ne Reaction at Energies ofAstrophysical Relevance'', Astrophysical Journal, 836, 57 (2017). *O. Beliuskina, A.O. Strekalovsky, A.A. Aleksandrov, I.A. Aleksandrova, H.M. Devaraja, C. Heinz, S. Heinz, S. Hofmann, S. Ilich, N. Imai, D.V.
Kamanin, M. Kis, G.N. Knyazheva, C. Kozhuharov, E.A. Kuznetsova, J. Maurer, G.V. Mishinsky, M. Pomorski, Yu.V. Pyatkov, O.V.
6WUHNDORYVN\07UࡇDJHUDQG9(=KXFKNR3XOVH-height defect in single-FU\VWDO&9'GLDPRQGGHWHFWRUVEur. Phys. J. A 53, 32 (2017)*.
M. Klintefjord, K. Hadynska-Klek, A. Gorgen, C. Bauer, F.L. Bello Garrote, S. Bonig, B. Bounthong, A. Damyanova, J.P. Delaroche, V.

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Fedosseev, D.A. Fink, F. Giacoppo, M. Girod, P. Hoff, N. Imai, W. Korten, A.C. Larsen, J. Libert, R. Lutter, B.A. Marsh, P.L. Molkanov, H.
Naidja, P. Napiorkowski, F. Nowacki, J. Pakarinen, E. Rapisarda, P. Reiter, T. Renstrom, S. Rothe, M.D. Seliverstov, B. Siebeck, S. Siem, J.
Srebrny, T. Stora, P. Thole, T.G. Tornyi, G.M. Tveten, P. Van Duppen, M.J. Vermeulen, D. Voulot, N. Warr, F. Wenander, H.De Witte, M.
=LHOLQVND6WUXFWXUHRIORZ-O\LQJVWDWHVLQ6PVWXGLHGE\&RXORPEH[FLWDWLRQ3K\V5HY&  *.
J. Lee, H. Liu, P. Doornenbal, M. Kimura, K. Minomo, K. Ogata, Y. Utsuno, N. Aoi, K. Li, M. Matsushita, H. Scheit, D. Steppenbeck, S.
Takeuchi, H. Wang, H. Baba, E. Ideguchi, N. Kobayashi, Y. Kondo, S. Michimasa, T. Motobayashi, H. Sakurai, M. Takechi, and Y. Togano,“Asymmetry dependence of reduction factors from single-nucleon knockout of 30Ne at Ң230 MeV/nucleon”, Progress of Theoretical andExperimental Physics 2016, 083D01 (2016)*
C. Babcock, H. Heylen, M. L. Bissell, K. Blaum, P. Campbell, B. Cheal, D. Fedorov, R. F. Garcia Ruiz, W. Geithner, W. Gins, T. Day
Goodacre, L.K. Grob, M. Kowalska, S. M. Lenzi, B. Maass, S. Malbrunot-Ettenauer, B. Marsh, R. Neugart, G. Neyens, W. Nörtershäuser,
T. Otsuka, R. Rossel, S. Rothe, R. Sánchez, Y. Tsunoda, C. Wraith, L. Xie, and X. F. Yang, “Quadrupole moments of odd-A 53-63Mn: Onsetof collectivity towards N=40”, Physics Letters B 760, 387 (2016)*
H. Heylen, M. De Rydt, G. Neyens, M. L. Bissell, L. Caceres, R. Chevrier, J. M. Daugas, Y. Ichikawa, Y. Ishibashi, O. Kamalou, T. J.
Mertzimekis, P. Morel, J. Papuga, A. Poves, M. M. Rajabali, C. Stödel, J. C. Thomas, H. Ueno, Y. Utsuno, N. Yoshida, and A. Yoshimi,“High-precision quadrupole moment reveals significant intruder component in 3313Al20 ground state”, Physical Review C 94, 034312 (2016)*
T. Togashi, Y. Tsunoda, T. Otsuka, and N. Shimizu, “Quantum Phase Transition in the Shape of Zr isotopes”, Physical Review Letters 117,
172502 (2016)*
C. Kremer, S. Aslanidou, S. Bassauer, M. Hilcker, A. Krugmann, P. von Neumann-Cosel, T. Otsuka, N. Pietralla, V. Yu. Ponomarev, N.
Shimizu, M. Singer, G. Steinhilber, T. Togashi, Y. Tsunoda, V. Werner, and M. Zweidinger, “First Measurement of Collectivity of Coexisting
Shapes Based on Type II Shell Evolution: The Case of 96Zr”, Physical Review Letters 117, 172503 (2016)*
H. Heylen, C. Babcock, R. Beerwerth, J. Billowes, M. L. Bissell, K. Blaum, J. Bonnard, P. Campbell, B. Cheal, T. Day Goodacre, D. Fedorov,
S. Fritzsche, R. F. Garcia Ruiz, W. Geithner, Ch. Geppert, W. Gins, L. K. Grob, M. Kowalska, K. Kreim, S. M. Lenzi, I. D. Moore, B. Maass,
S. Malbrunot-Ettenauer, B. Marsh, R. Neugart, G. Neyens, W. Nörtershäuser, T. Otsuka, J. Papuga, R. Rossel, S. Rothe, R. Sánchez, Y.
Tsunoda, C. Wraith, L. Xie, X. F. Yang, and D. T. Yordanov, “Changes in nuclear structure along the Mn isotopic chain studied via charge
radii”, Physical Review C 94, 054321 (2016)*
A. I. Morales, G. Benzoni, H. Watanabe, Y. Tsunoda, T. Otsuka, S. Nishimura, F. Browne, R. Daido, P. Doornenbal, Y. Fang, G. Lorusso, Z.
Patel, S. Rice, L. Sinclair, P.-A. Söderström, T. Sumikama, J. Wu, Z. Y. Xu, A. Yagi, R. Yokoyama, H. Baba, R. Avigo, F. L. Bello Garrote,
N. Blasi, A. Bracco, F. Camera, S. Ceruti, F. C. L. Crespi, G. de Angelis, M.-C. Delattre, Zs. Dombradi, A. Gottardo, T. Isobe, I. Kojouharov,
N. Kurz, I. Kuti, K. Matsui, B. Melon, D. Mengoni, T. Miyazaki, V. Modamio-Hoybjor, S. Momiyama, D.R. Napoli, M. Niikura, R. Orlandi, H.
Sakurai, E. Sahin, D. Sohler, H. Schaffner, R. Taniuchi, J. Taprogge, Zs. Vajta, J. J. Valiente-Dobón, O. Wieland, and M. Yalcinkaya,³7\SH,,VKHOOHYROXWLRQLQ$ LVREDUVIURPWKH1LVODQGRILQYHUVLRQ´3K\VLFV/HWWHUV% N. Paul, A. Corsi, A. Obertelli, P. Doornenbal, G. Authelet, H. Baba, B. Bally, M. Bender, D. Calvet, F. Château, S. Chen, J.-P. Delaroche, A.
Delbart, J.-M. Gheller, A. Giganon, A. Gillibert, M. Girod, P.-H. Heenen, V. Lapoux, J. Libert, T. Motobayashi, M. Niikura, T. Otsuka, T. R.
Rodríguez, J.-Y. Roussé, H. Sakurai, C. Santamaria, N. Shimizu, D. Steppenbeck, R. Taniuchi, T. Togashi, Y. Tsunoda, T. Uesaka, T.
Ando, T. Arici, A. Blazhev, F. Browne, A. M. Bruce, R. Caroll, L. X. Chung, M.L. Cortés, M. Dewald, B. Ding, F. Flavigny, S. Franchoo, M.
Górska, A. Gottardo, A. Jungclaus, J. Lee, M. Lettmann, B. D. Linh, J. Liu, Z. Liu, C. Lizarazo, S. Momiyama, K. Moschner, S. Nagamine,
N. Nakatsuka, C. Nita, C. R. Nobs, L. Olivier, Z. Patel, Z. Podolyák, M. Rudigier, T. Saito, C. Shand, P.-A. Söderström, I. Stefan, R. Orlandi,
V. Vaquero, V. Werner, K. Wimmer, and Z. Xu, “Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopyof 110Zr”, Physical Review Letters 118, 032501 (2017)*
N. Tsunoda, T. Otsuka, N. Shimizu, M. Hjorth-Jensen, K. Takayanagi, and T. Suzuki, “Exotic neutron-rich medium-mass nuclei with realistic
nuclear forces”, Physical Review C 95, 021304(R) (2017)*
V. Tripathi, R. S. Lubna, B. Abromeit, H. L. Crawford, S. N. Liddick, Y. Utsuno, P. C. Bender, B. P. Crider, R. Dungan, P. Fallon, K. Kravvaris,
N. Larson, A. O. Macchiavelli, T. Otsuka, C. J. Prokop, A. L. Richard, N. Shimizu, S. L. Tabor, A. VolyDDQG6<RVKLGD³ȕGHFD\RI38,40Si(Tz=+5,+6) to low-lying core excited states in odd-odd 38,40P isotopes”, Physical Review C 95, 024308 (2017)*
H.N. Liu, J. Lee, P. Doornenbal, H. Scheit, S. Takeuchi, N. Aoi, K.A. Li, M. Matsushita, D. Steppenbeck, H. Wang, H. Baba, E. Ideguchi, N.
Kobayashi, Y. Kondo, G. Lee, S. Michimasa, T. Motobayashi, A. Poves, H. Sakurai, M. Takechi, Y. Togano, J.A. Tostevin, and Y. Utsuno,“Intruder configurations in the ground state of 30Ne”, Physics Letters B 767, 58 (2017)*
He Wang, Hideaki Otsu, Hiroyoshi Sakurai, DeukSoon Ahn, Masayuki Aikawa, Takashi Ando, Shouhei Araki, Sidong Chen, Nobuyuki Chiga,
Pieter Doornenbal, Naoki Fukuda , Tadaaki Isobe, Shunsuke Kawakami, Shoichiro Kawase, Tadahiro Kin, Yosuke Kondo, Shunpei
Koyama, Shigeru Kubono, Yukie Maeda, Ayano Makinaga, Masafumi Matsushita, Teiichiro Matsuzaki, Shin’ichiro Michimasa, Satoru
Momiyama, Shunsuke Nagamine, Takashi Nakamura, Keita Nakano, Megumi Niikura,Tomoyuki Ozaki, Atsumi Saito, Takeshi Saito,
Yoshiaki Shiga, Mizuki Shikata, Yohei Shimizu, Susumu Shimoura, Toshiyuki Sumikama, Par-Anders Soderstrom, Hiroshi Suzuki,
Hiroyuki Takeda, Satoshi Takeuchi, Ryo Taniuchi, Yasuhiro Togano, Junichi Tsubota, Meiko Uesaka, Yasushi Watanabe, Yukinobu
Watanabe, Kathrin Wimmer, Tatsuya Yamamoto, Koichi Yoshida: ``Spallation reaction study for the long-lived fission product 107Pd'', Prog.
Theor. Exp. Phys. 2017, 021D01 (2017) *P. Doornenbal, H. Scheit, S. Takeuchi, N. Aoi, K. Li, M. Matsushita, D. Steppenbeck, H. Wang, H. Baba, E. Ideguchi, N. Kobayashi, Y.
Kondo, J. Lee, S. Michimasa, T. Motobayashi, A. Poves,H. Sakurai, M. Takechi, Y. Togano, K. Yoneda: ``Mapping the deformation in theisland of inversion: Inelastic scattering of 30Ne and 36Mg at intermediate energies'',Phys. Rev. C 93, 044306 (2016) *D.Q. Fang, Y.G. Ma, X.Y. Sun, P. Zhou, Y. Togano, N. Aoi, H. Baba, X.Z. Cai, X.G. Cao, J.G. Chen, Y. Fu, W. Guo, Y. Hara, T. Honda, Z.G.
Hu, K. Ieki, Y. Ishibashi, Y. Ito, N. Iwasa, S. Kanno, T. Kawabata, H. Kimura, Y. Kondo, K. Kurita, M. Kurokawa, T. Moriguchi, H. Murakami,
H. Ooishi, K. Okada, S. Ota, A. Ozawa, H. Sakurai, S. Shimoura, R. Shioda, E. Takeshita, S.Takeuchi, W.D. Tian, H.W. Wang, J.S. Wang,
M. Wang, K. Yamada, Y. Yamada, Y. Yasuda, K. Yoneda, G.Q. Zhang, T. Motobayashi: ``Proton-proton correlations in distinguishing thetwo-proton emission mechanism of 23Al and 22Mg'', Phys. Rev. C94, 044621 (2016) *H. Wang, N. Aoi, S. Takeuchi, M. Matsushita, T. Motobayashi, D. Steppenbeck, K. Yoneda, H. Baba, Zs. Dombradi, K. Kobayashi, Y. Kondo,
J. Lee, H. Liu, R. Minakata, D. Nishimura, H. Otsu, H. Sakurai, D. Sohler, Y. Sun, Z. Tian, R. Tanaka, Zs. Vajta, Z. Yang, T. Yamamoto, Y.
Ye, R. Yokoyama: ``First spectroscopic information from even-even nuclei in thH UHJLRQ VRXWKHDVW RI 132Sn: Neutron-excitation
dominance of the 2+1 state in 132Cd'', Phys. Rev. C 94, 051301 (2016) *E. Ideguchi, G.S. Simpson, R. Yokoyama, Mn. Tanaka, S. Nishimura, P. Doornenbal, G. Lorusso, P. Aoderstrom, T. Sumikama, J. Wu, Z. Y.

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Ⅵ. RNC ACTIVITIESXu, N. Aoi, H. Baba, F. L. Bello Garrote, G. Benzoni, F. Browne, R. Daido, Y. Fang, N. Fukuda, A. Gottardo, G. Gey, S. Go, N. Inabe, T.
Isobe, D. Kameda, K. Kobayashi, M. Kobayashi, I. Kojouharov, T. Komatsubara, T. Kubo, N. Kurz, I. Kuti, Z. Li, M. Matsushita, S.
Michimasa, C.B. Moon, H. Nishibata, I. Nishizuka, A. Odahara, Z. Patel, S. Rice, E. Sahin, H. Sakurai, H. Schaffner, L. Sinclair, H. Suzuki,
H. Takeda, J. Taprogge, Zs. Vajta, H. Watanabe, A. Yagi: ``P s isomers of 158,160Nd'', Phys. Rev. C94, 064322 (2016) *M. Dozono, T. Uesaka, S. Michimasa, M. Takaki, M. Kobayashi, M. Matsushita, S. Ota, H. Tokieda, S. Shimoura:”Separated flow operationof the SHARAQ spectrometer for in-flight proton-decay experiments'', Nucl. Instr. Meth. Phys. Res. A 830, 233--242 (2016) *R. Yokoyama, S. Go, D. Kameda, T. Kubo, N. Inabe, N. Fukuda, H. Takeda, H. Suzuki, K. Yoshida, K. Kusaka, K. Tanaka, Y. Yanagisawa,
M. Ohtake, H. Sato, Y. Shimizu, H. Baba, M. Kurokawa, D. Nishimura, T. Ohnishi, N. Iwasa, A. Chiba, T. Yamada, E. Ideguchi, T. Fujii, H.
Nishibata, K. Ieki, D. Murai, S. Momota, Y. Sato, J.W. Hwang, S. Kim, O.B. Tarasov, D.J. Morrissey, B.M. Sherrill, G. Simpson, C.R.
Praharaj: ``New K isomers in the neutron-rich N=100 isotones 162Sm, 163Eu, and 164Gd'', Phys. Rev. C95, 034313 (2017) *J. Wu, S. Nishimura, G. Lorusso, P. Moller, E. Ideguchi, P.H. Regan, G.S. Simpson, P. A. Soderstrom, P.M. Walker, H. Watanabe, Z.Y. Xu,
H. Baba, F. Browne, R. Daido, P. Doornenbal, Y.F. Fang, G. Gey, T. Isobe, P.S. Lee, J.J. Liu, Z. Li, Z. Korkulu, Z. Patel, V. Phong, S. Rice,H. Sakurai, L. Sinclair, T. Sumikama, M. Tanaka, A. Yagi, Y.L. Ye, R. Yokoyama, G.X. Zhang, T. Alharbi, N. Aoi, F.L. Bello Garrote, G.
Benzoni, A.M. Bruce, R.J. Carroll, K.Y. Chae, Z. Dombradi, A. Estrade, A. Gottardo, C.J. Griffin, H. Kanaoka, I. Kojouharov, F.G. Kondev,
S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, G.J. Lane, E.J. Lee, T. Lokotko, G. Lotay, C. B. Moon, H. Nishibata, I. Nishizuka, C.R. Nita, A.
Odahara, Zs. Podolyak, O.J. Roberts, H. Schaffner, C. Shand, J. Taprogge, S. Terashima, Z. Vajta, S. Yoshida: ``94 E-Decay Half-Lives of
Neutron-Rich 55Cs to 67Ho: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation'', Phys. Rev. Lett. 118,
0722701 (2017) *A.I. Morales, G. Benzoni, H. Watanabe, Y. Tsunoda, T. Otsuka, S. Nishimura, F. Browne, R. Daido, P. Doornenbal, Y. Fang, G. Lorusso, Z.
Patel, S. Rice, L. Sinclair, P.A. Soderstrom, T. Sumikama, J. Wu, Z.Y. Xu, A. Yagi, R. Yokoyama, H. Baba, R. Avigo, F.L. Bello Garrote, N.
Blasi, A. Bracco, F. Camera, S. Ceruti, F.C.L. Crespi, G. de Angelis, M.C. Delattre, Zs. Dombradi, A. Gottardo, T. Isobe, I. Kojouharov, N.
Kurz, I. Kuti, K. Matsui, B. Melon, D. Mengoni, T. Miyazaki, V. Modamio-Hoybjor, S. Momiyama, D.R. Napoli, M. Niikura, R.Orlandi,
H.Sakurai, E.Sahin, D.Sohler, H.Schaffner, R.Taniuchi, J.Taprogge, Zs. Vajta, J.J. Valiente-Dobon, O. Wieland, M. Yalcinkaya: ``Type II
shell evolution in A=70 isobars from the N> 40 island of inversion'',Phys.~Lett.~B 765, 328 (2017) *A. Adare et al. [PHENIX Collaboration], ``Angular decay coefficients of J/\ mesons at forward rapidity from p+p collisions at Ҁs =510 GeV,”
Phys. Rev. D 95, 092003 (2017) *J. Adam et al. [ALICE Collaboration], ``W and Z boson production in p-Pb collisions at ҀsNN = 5.02 TeV,'' JHEP 1702, 077 (2017) *J. Adam et al. [ALICE Collaboration], ``Determination of the event collision time with the ALICE detector at the LHC,'' Eur. Phys. J. Plus 132,
no. 2, 99 (2017) *A. Adare et al. [PHENIX Collaboration], ``Measurement of the relative yields of \ 2S) to \ 1S) mesons produced at forward and backward
rapidity in pp, p+Al, p+Au, and 3He+Au collisions at ҀsNN=200 GeV,'' Phys. Rev. C 95, no. 3, 034904 (2017) *A. Adare et al. [PHENIX Collaboration], ``Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron
angular correlations in pp collisions at Ҁs =510 GeV,'' Phys. Rev. D 95, no. 7, 072002 (2017) *J. Adam et al. [ALICE Collaboration], ``Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV,'' Phys.
Lett. B 763, 238 (2016) *J. Adam et al. [ALICE Collaboration], ``J/\ suppression at forward rapidity in Pb-Pb collisions at ҀsNN = 5.02 TeV”, Phys. Lett. B 766, 212(2017) *J. Adam et al. [ALICE Collaboration],``Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions,'' Nature
Phys. 13, 535 (2017) *J. Adam et al. [ALICE Collaboration], ``Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at ҀsNN = 2.76 TeV,''JHEP 1609, 164 (2016) *A. Adare et al. [PHENIX Collaboration], ``Measurements of double-helicity asymmetries in inclusive J/\ production in longitudinally polarized
p+p collisions at Ҁs=510$ GeV,'' Phys. Rev. D 94, no. 11, 112008 (2016) *J. Adam et al. [ALICE Collaboration], ``Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at ҀsNN
=2.76 $ TeV,'' JHEP 1609, 028 (2016) *J. Adam et al. [ALICE Collaboration], ``D-meson production in p-Pb collisions at ҀsNN=5.02 TeV and in pp collisions at Ҁs=7 TeV,'' Phys.
Rev. C 94, no. 5, 054908 (2016) *J. Adam et al. [ALICE Collaboration],``Measurement of azimuthal correlations of D mesons and charged particles in pp collisions at Ҁ
s=7$ TeV and p-Pb collisions at ҀsNN=5.02$ TeV,'' Eur. Phys. J. C 77, no. 4, 245 (2017) *J. Adam et al. [ALICE Collaboration],``Pseudorapidity dependence of the anisotropic flow of charged particles in Pb-Pb collisions at Ҁs
NN=2.76$ TeV,'' Phys. Lett. B 762, 376 (2016) *J. Adam et al. [ALICE Collaboration],``Correlated event-by-event fluctuations of flow harmonics in Pb-Pb collisions at Ҁs NN=2.76$ TeV,''
Phys. Rev. Lett. 117, 182301 (2016) *J. Adam et al. [ALICE Collaboration],``Measurement of transverse energy at midrapidity in Pb-Pb collisions at ҀsNN = 2.76$ TeV,'' Phys.
Rev. C 94, no. 3, 034903 (2016) *J. Adam et al. [ALICE Collaboration],``Centrality dependence of charged jet production in p–Pb collisions atҀsNN = 5.02 TeV,'' Eur. Phys. J.
C 76, no. 5, 271 (2016) *J. Adam et al. [ALICE Collaboration],``Centrality dependence of \(2S) suppression in p-Pb collisions at ҀsNN = 5.02 TeV,'' JHEP 1606, 050(2016) *J. Adam et al. [ALICE Collaboration],``Measurement of D-meson production versus multiplicity in p-Pb collisions at ҀsNN=5.02 TeV,'' JHEP
1608, 078 (2016) *J. Adam et al. [ALICE Collaboration], ``Particle identification in ALICE: a Bayesian approach,'' Eur. Phys. J. Plus 131, no. 5, 168 (2016) *J. Adam et al. [ALICE Collaboration], ``Anisotropic flow of charged particles in Pb-Pb collisions at ҀsNN=5.02 TeV,'' Phys. Rev. Lett. 116, no.
13, 132302 (2016) *J. Adam et al. [ALICE Collaboration], ``Production of K*(892)0 and I(1020) in p–Pb collisions at ҀsNN = 5.02 TeV,'' Eur. Phys. J. C 76, no. 5,
245 (2016) *J. Adam et al. [ALICE Collaboration], ``Multiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse
momentum in p-Pb collisions at ҀsNN = 5.02 TeV,'' Phys. Lett. B 760, 720 (2016) *- 444 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

J. Adam et al. [ALICE Collaboration], ``Multipion Bose-Einstein correlations in pp,p -Pb, and Pb-Pb collisions at energies available at the
CERN Large Hadron Collider,'' Phys. Rev. C 93, no. 5, 054908 (2016) *J. Adam et al. [ALICE Collaboration], ``Multi-strange baryon production in p-Pb collisions at ҀsNN = 5.02$ TeV,'' Phys. Lett. B 758, 389(2016) *J. Adam et al. [ALICE Collaboration], ``Centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at
ҀsNN = 5.02 TeV,'' Phys. Rev. Lett. 116, no. 22, 222302 (2016) *J. Adam et al. [ALICE Collaboration], ``Measurement of an excess in the yield of J/\ at very low pT in Pb-Pb collisions at ҀsNN = 2.76 TeV,''
Phys. Rev. Lett. 116, no. 22, 222301 (2016) *J. Adam et al. [ALICE Collaboration], ``Pseudorapidity and transverse-momentum distributions of charged particles in proton–proton
collisions at Ҁs= 13 TeV,'' Phys. Lett. B 753, 319 (2016) *J. Adam et al. [ALICE Collaboration], ``Inclusive quarkonium production at forward rapidity in pp collisions at Ҁs=8 TeV,'' Eur. Phys. J. C 76,
no. 4, 184 (2016) *A. Adare et al. [PHENIX Collaboration], ``Measurements of directed, elliptic, and triangular flow in Cu+Au collisions at ҀsNN=200$ GeV,''
Phys. Rev. C 94, no. 5, 054910 (2016) *A. Adare et al. [PHENIX Collaboration], ``Azimuthally anisotropic emission of low-momentum direct photons in Au+Au collisions at ҀsNN=200$ GeV,'' Phys. Rev. C 94, no. 6, 064901 (2016) *J. Adam et al. [ALICE Collaboration], ``Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at ҀsNN = 5.02 TeV,''
Phys. Lett. B 754, 81 (2016) *J. Adam et al [ALICE Collaboration], ``Azimuthal anisotropy of charged jet production in ҀsNN = 2.76 TeV Pb-Pb collisions,'' Phys. Lett. B
753, 511 (2016) *J. Adam et al. [ALICE Collaboration], ``Direct photon production in Pb-Pb collisions at ҀsNN =$ 2.76 TeV,'' Phys. Lett. B 754, 235 (2016) *J. Adam et al. [ALICE Collaboration], ``Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range
in Pb-Pb collisions at ҀsNN= 2.76 TeV,'' Phys. Lett. B 754, 373 (2016) *J. Adam et al. [ALICE Collaboration], ``Measurement of Ds+ production and nuclear modification factor in Pb-Pb collisions at ҀsNN = 2.76
TeV,'' JHEP 1603, 082 (2016) *J. Adam et al. [ALICE Collaboration],``Multiplicity and transverse momentum evolution of charge-dependent correlations in pp, p–Pb, and
Pb–Pb collisions at the LHC,'' Eur. Phys. J. C 76, no. 2, 86 (2016) *J. Adam et al. [ALICE Collaboration], ``Transverse momentum dependence of D-meson production in Pb-Pb collisions at ҀsNN=$ 2.76
TeV,'' JHEP 1603, 081 (2016) *A. Adare et al. [PHENIX Collaboration], ``Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at
ҀsNN from 62.4 GeV to 2.76 TeV,'' Phys. Rev. C 93, no. 2, 024911 (2016) *A. Adare et al. [PHENIX Collaboration], ``Transverse energy production and charged-particle multiplicity at midrapidity in various systems
from ҀsNN=7.7$ to 200 GeV,'' Phys. Rev. C 93, no. 2, 024901 (2016) *A. Adare et al. [PHENIX Collaboration], ``Imeson production in the forward/backward rapidity region in Cu+Au collisions at ҀsNN=200
GeV,'' Phys. Rev. C 93, no. 2, 024904 (2016) *A. Adare et al. [PHENIX Collaboration], ``Forward J/\ production in U+U collisions at ҀsNN=193 GeV,'' Phys. Rev. C 93, no. 3, 034903(2016) *A. Adare et al. [PHENIX Collaboration], ``Dielectron production in Au+Au collisions at ҀsNN=200 GeV,'' Phys. Rev. C 93, no. 1, 014904(2016) *A. Adare et al. [PHENIX Collaboration], ``Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at
ҀsNN=200 GeV,'' Phys. Rev. C 93, no. 3, 034904 (2016) *A. Adare et al. [PHENIX Collaboration], ``Centrality-dependent modification of jet-production rates in deuteron-gold collisions at ҀsNN =200
GeV,'' Phys. Rev. Lett. 116, no. 12, 122301 (2016) *J. Adam et al. [ALICE Collaboration], ``Study of cosmic ray events with high muon multiplicity using the ALICE detector at the CERN Large
Hadron Collider,'' JCAP 1601, no. 01, 032 (2016) *J. Adam et al. [ALICE Collaboration], ``Centrality dependence of pion freeze-out radii in Pb-Pb collisions at ҀsNN= 2.76 TeV,'' Phys. Rev. C
93, no. 2, 024905 (2016) *J. Adam et al. [ALICE Collaboration], ``Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at ҀsNN=2.76 TeV,''
Phys. Rev. C 93, no. 3, 034916 (2016) *J. Adam et al. [ALICE Collaboration], ``Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb–Pb collisions at ҀsNN= 2.76$ TeV,” Phys. Lett. B 753, 41 (2016) *J. Adam et al. [ALICE Collaboration], ``Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at energies available at the CERN
Large Hadron Collider,'' Phys. Rev. C 93, no. 2, 024917 (2016) *J. Adam et al. >$/,&(&ROODERUDWLRQ@CC'LIIHUHQWLDOVWXGLHVRILQFOXVLYH-ȥDQGȥ 6 SURGXFWLRQDWIRUZDUGUDSLGLW\LQ3E-Pb collisions at ҀsNN=2.76 $ TeV,'' JHEP {¥bf 1605}, 179 (2016) *J. Adam et al. [ALICE Collaboration], ``Forward-central two-particle correlations in p-Pb collisions at ҀsNN = 5.02 TeV,'' Phys. Lett. B 753,
126 (2016) *A. Adare et al. [PHENIX Collaboration], ``Measurement of higher cumulants of net-charge multiplicity distributions in Au+Au collisions at ҀsNN=7.7-200$ GeV,'' Phys. Rev. C 93, no. 1, 011901 (2016) *J. Adam et al. [ALICE Collaboration], ``Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in
Pb-Pb collisions at ҀsNN=2.76 TeV,'' Phys. Rev. C 93, no. 3, 034913 (2016) *A. Adare et al. [PHENIX Collaboration], ``Measurement of parity-violating spin asymmetries in W+- production at midrapidity in longitudinallypolarized p+p collisions,'' Phys. Rev. D 93, no. 5, 051103 (2016) *A. Adare et al. [PHENIX Collaboration],``Measurement of the higher-order anisotropic flow coefficients for identified hadrons in Au+Au
collisions at ҀsNN = 200 GeV,'' Phys. Rev. C 93, no. 5, 051902 (2016) *B. Abelev et al. [ALICE Collaboration], ``Measurement of electrons from beauty hadron decays in pp collisions at Ҁs=7$ TeV,'' Phys. Lett. B
721, 13 (2013) Erratum: [Phys. Lett. B 763, 507 (2016)] *J. Yasuda et al.: ``Inverse kinematics (p,n) reactions studies using the WINDS slow neutron detector and the SAMURAI spectrometer'', Nucl.

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Ⅵ. RNC ACTIVITIESInstr. and Meth. In Phys. Res. B 376, 393 (2016)*
A. Krasznahorkay et al.: ``Observation of anomalous internal pair creation in 8Be: A possible indication of a light, neutral boson'', Phys. Rev.
Lett. 042501 (2016)*
J.C. Zamora et al.: ``First measurement of isoscalar giant resonances in a stored-beam experiment'', Phys. Lett. B 763, 16 (2016)*
P. Russotto et al.: ``Results of the ASY-EOS experiment at GSI: The symmetry energy at supra-saturation density'', Phys. Rev. C 94 034608(2016)*[Proceedings](Original Papers) *Subject to Peer Review
D. Kahl, A. A. Chen, S. Kubono, H. Yamaguchi, D. N. Binh, J. Chen, S. Cherubini, N.N. Duy, T. Hashimoto, S. Hayakawa, N. Iwasa, H.S.
Jung, S. Kato, Y.K. Kwon, S. Nishimura, S. Ota, K. Setoodehnia, T. Teranishi, H. Tokieda, T. Yamada, C.C. Yun and L.Y. Zhang:``Experimental investigation of the 30S(alpha, p) thermonuclear reaction in x-ray bursts'', EPJ Web of Conferences 109, 04005 (2016).
Y.B. Wang, S.J. Jin, L. Jing, Z.Y. Han, X.X. Bai, B. Guo, Y.J. Li, Z.H. Li, G. Lian, J. Su, L.J. Sun, S.Q. Yan, S. Zeng, W.P. Liu, H. Yamaguchi,
S. Kubono, J. Hu, D. Kahl, J.J He, J.S. Wang, X.D. Tang, S.W. Xu, P. Ma, N.T. Zhang, Z. Bai, M.R. Huang, B.L. Jia, S.L. Jin, J.B. Ma, S.B.
Ma, W.H. Ma, Y.Y. Yang, L.Y. Zhang, H.S. Jung, J.Y. Moon, C.S. Lee. T. Teranishi, H.W. Wang, H. Ishiyama, N. Iwasa, T. Komatsubara
and B.A. Brown: ``Two measurements of the 22Na+p resonant scattering via thick-target inverse-kinematics method'', EPJ Web ofConferences 109, 04010 (2016).
S. Kubono, H. Yamaguchi, S. Hayakawa, S.Q. Hou and J.J. He, ``Explosive Nuclear Burning in the pp-Chain Region and the Breakout
Processes'', EPJ Web of Conferences 109 01001 (2016).
S. Hayakawa, C. Spitaleri, N. Burtebayev, A. Aimaganbetov, P. Figuera, M. Fisichella, G.L. Guardo, S. Igamov, I. Indelicato, G. Kiss, S.
Kliczewski, M. La Cognata, L. Lamia, M. Lattuada, E. Piasecki, G. G. Rapisarda, S. Romano, S. B. Sakuta, R. Siudak, A. Trzcinska, A.
Tumino and A. Urkinbayev: ``Indirect Study of the 16O + 16O Fusion Reaction Toward Stellar Energies by the Trojan Horse Method'',
Nucleus Nucleus 2015 (NN2015), Catania, Italy, EPJ Web of Conferences 109, 09013 (2016).
H. Yamaguchi, D. Kahl, S. Hayakawa, Y. Sakaguchi, Y. Wakabayashi, T. Hashimoto, S. Cherubini, M. Gulino, C. Spitaleri, G.G. Rapisarda,
M. La Cognata, L. Lamia, S. Romano, S. Kubono, N. Iwasa, T. Teranishi, T. Kawabata, Y.K. Kwon, D.N. Binh, L.H. Khiem, N.N. Duy, S.
Kato, T. Komatsubara, A.Coc, N. de Sereville, F.Hammache, G. Kiss and S. Bishop: ``Studying astrophysical reactions with low-energy RI
beams at CRIB'', EPJ Web of Conferences 117, 09005 (2016).
G. D'Agata, C. Spitaleri, R.G. Pizzone, S. Blagus, P. Figuera, L. Grassi, G.L. Guardo, M. Gulino, S. Hayakawa, I. Indelicato, R. Kshetri, M. La
Cognata, L. Lamia, M. Lattuada, 70LMDWRYLü, M. Milin, D. Miljanic, L. Prepolec, M.L. Sergi, N. Skukan, N. Soic, V. Tokic, A. Tumino and M.
Uroic: ``First evidences for 19F(alpha,p)22Ne at astrophysical energies'', 8th European Summer School on Experimental Nuclear
Astrophysics, S. Tecla, Italy, J. of Phys.: Conf. Series, 703, 012016 (2016).
M. Mazzocco, A. Boiano, C. Boiano, M. La Commara, C. Manea, C. Parascandolo, D. Pierroutsakou, C. Signorini, E. Strano, D. Torresi, H.
Yamaguchi, D. Kahl, L. Acosta, P. Di Meo, J.P. Fernandez-Garcia, T. Glodariu, J. Grebosz, A. Guglielmetti, N. Imai, Y. Hirayama, H.
Ishiyama, N. Iwasa, S.C. Jeong, H.M. Jia, N. Keeley, Y.H. Kim, S. Kimura, S. Kubono, J.A. Lay, C.J. Lin, G. Marquinez-Duran, I. Martel, H.
Miyatake, M. Mukai, T. Nakao, M. Nicoletto, A. Pakou, K. Rusek, Y. Sakaguchi, A.M. Sanchez-Benitez, T. Sava, O. Sgouros, C. Stefanini,
F. Soramel, V. Soukeras, E. Stiliaris, L. Stroe, T. Teranishi, N. Toniolo, Y. Wakabayashi, Y.X. Watanabe, L. Yang and Y.Y. Yang, ``7Beand 8B-reaction dynamics at Coulomb barrier energies'', EPJ Web of Conferences 117, 060006 (2016).
H. Yamaguchi, D. Kahl, S. Hayakawa, L. Yang, Y. Sakaguchi, K. Abe, H. Shimizu, and CRIB Collaboration, ``Overview of the activities at thelow-energy beam separator CRIB'', Il Nuovo Cimento 39C, 358 (2016).
D. Kahl, H. Yamaguchi, H. Shimizu, K. Abe, O. Beliuskina, S. M. Cha, K.Y. Chae, Z. Ge, S. Hayakawa, M.S. Kwag, D. H. Kim, J. Y. Moon,
S.Y. Park, L. Yang: ”Explosive destruction of 26Al'', Il Nuovo Cimento 39C, 362 (2016).
S. Hayakawa: ``Trials for the cosmological 7Li problem with 7Be beams at CRIB and collaborating studies'', Il Nuovo Cimento 39C 370(2016).
S.M. Cha, K.Y. Chae, K. Abe, S.H. Bae, S.H. Choi, D.N. Binh, N.N. Duy, K.I. Hahn, S. Hayakawa, B. Hong, H.S. Jung, D. Kahl, L.H. Khiem,
A. Kim, D.H. Kim, E.J. Kim, G.W. Kim, M.J. Kim, K.J. Kwag, M.S. Kwag, Y.K. Kwon, C.S. Lee, E.J. Lee, S.I. Lim, B. Moon, J.Y. Moon, T.
Nakao, S.Y. Park, H. Shimizu, H. Yamaguchi, L. Yang, and G. Zhuang, ``Study of alpha cluster structure in 22Mg'', Il Nuovo Cimento 39C,
371 (2016).
S. Hayakawa, C. Spitaleri, N. Burtebayev, A. Aimaganbetov, S.V. Artemov, P. Figuera, M. Fisichella, G.L. Guardo, S. Igamov, I. Indelicato,
G.G. Kiss, S. Kubono, M. La Cognata, L. Lamia, M. Lattuada, M. Nassurlla, E. Piasecki, G.G. Rapisarda, S. Romano, S.B. Sakuta, A.
Trzcinska, A. Tumino, A. Urkinbayev, and T. Zholdybayev, ``Trojan Horse Method for the Oxygen-Burning Process Reactions'', JPS Conf.
Proc. 14, 020406 (2017).
H. Yamaguchi, D. Kahl, S. Hayakawa, Y. Sakaguchi, K. Abe, H. Shimuzu, Y. Wakabayashi, T. Hashimoto, S. Cherubini, M. Gulino, C.
Spitaleri, G. G. Rapisarda, M. La Cognata, L. Lamia, S. Romano, S. Kubono, N. Iwasa, T. Teranishi, T. Kawabata, Y. K. Kwon, D. N. Binh,
L. H. Khiem, N. N. Duy, S. Kato, T. Komatsubara, A. Coc, N. de Sereville, F. Hammache, G. Kiss, and S. Bishop, ``Experimental Studies ofLight-Ion Nuclear Reactions Using Low-Energy RI Beams'', JPS Conf. Proc. 14, 010503 (2017).
D. Kahl, A. A. Chen, S. Kubono, H. Yamaguchi, D. N. Binh, J. Chen, S. Cherubini, N. N. Duy, T. Hashimoto, S. Hayakawa, N. Iwasa, H. S.
Jung, S. Kato, Y. K. Kwon, S. Nishimura, S. Ota, K. Setoodehnia, T. Teranishi, H. Tokieda, T. Yamada, C. C. Yun, and L. Y. Zhang,``30S(alpha, p) Thermonuclear Reaction Rate from Experimental Level Structure of 34Ar'', JPS Conf. Proc. 14, 020510 (2017).
K. Abe, S. Hayakawa, H. Yamaguchi, and L. Lamia, ``Feasibility Study for the 7Be+n Reaction Measurements by Trojan Horse Method at
CRIB'', JPS Conf. Proc. 14, 020507 (2017).
Marisa Gulino, Silvio Cherubini, Claudio Spitaleri, Giuseppe Gabriele Rapisarda, Marco La Cognata, Livio Lamia, Rosario Gianluca Pizzone,
Stefano Romano, Shigeru Kubono, Hidetoshi Yamaguchi, Seya Hayakawa, Yasuo Wakabayashi, Naohito Iwasa, Seigo Kato, Tetsuro
Komatsubara, Takashi Teranishi, Alain Coc, Nicolas de Sereville, Fairouz Hammache, Gabor Kiss, Shawn Bishop, and Dam Nguyen Binh:``The 18F(n, alpha) Reaction: First Study of n-Induced Reaction on a Radioactive Nucleus Using the Trojan Horse Method'', JPS Conf.
Proc. 14, 021104 (2017).
N. Shimizu, Y. Utsuno, Y. Futamura, T. Sakurai, T. Mizusaki, T. Otsuka, “Stochastic estimation of level density in nuclear shell-model
calculations”, EPJ Web of Conferences 122, 02003 (2016)*- 446 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

T. Sumikama, D.S. Ahn, N. Fukuda, N. Inabe, T. Kubo, Y. Shimizu, H. Suzuki, H. Takeda, N. Aoi, D. Beaumel, K. Hasegawa, E. Ideguchi, N.
Imai, T. Kobayashi, M. Matsushita, S. Michimasa, H. Otsu, S. Shimoura, T. Teranishi: ``First test experiment to produce the slowed-down
RI beam with the momentum-compression mode at RIBF'', Proceedings of 17th International Conference on Electromagnetic Isotope
Separators and Related Topics (EMIS2015), Nucl. Instr. Meth. Phys. Res. B 376, 180--184 (2016)
J. Yasuda, M. Sasano, R.G.T. Zegers, H. Baba, W. Chao, M. Dozono, N. Fukuda, N. Inabe, T. Isobe, G. Jhang, D. Kameda, T. Kubo, M.
Kurata-Nishimura, E. Milman, T. Motobayashi, H. Otsu, V. Panin, W. Powell, H. Sakai, M. Sako, H. Sato, Y. Shimizu, L. Stuhl, H. Suzuki, S.
Tangwancharoen, H. Takeda, T. Uesaka, K. Yoneda, J. Zenihiro, T. Kobayashi, T. Sumikama, T. Tako, T. Nakamura, Y. Kondo, Y.
Togano, M. Shikata, J. Tsubota, K. Yako, S. Shimoura, S. Ota, S. Kawase, Y. Kubota, M. Takaki, S. Michimasa, K. Kisamori, C.S. Lee, H.
Tokieda, M. Kobayashi, S. Koyama, N. Kobayashi, T. Wakasa, S. Sakaguchi, A. Krasznahorkay, T. Murakami, N. Nakatsuka, M. Kaneko,
Y. Matsuda, D. Mucher, S. Reichert, D. Bazin, J.W. Lee: ``Inverse kinematics (p,n) reactions studies using the WINDS slow neutron
detector and the SAMURAI spectrometer'', Proceedings of 17th International Conference on Electromagnetic Isotope Separators andRelated Topics (EMIS2015), Nucl. Instr. Meth. Phys. Res. B 376, 393--396 (2016).
H. Sako et al. [J-PARC Heavy-Ion Collaboration], ``Studies of high density baryon matter with high intensity heavy-ion beams at J-PARC,''
Nucl. Phys. A 956, 850 (2016).
T. Gunji [ALICE Collaboration], ``Overview of recent ALICE results,'' Nucl. Phys. A 956, 11 (2016)
C. Zhao, T. Gunji et al., ``First performance results of the ALICE TPC Readout Control Unit 2,'' JINST 11, no. 01, C01024 (2016).
K. Itahashi et al., ``Precision spectroscopy of pionic atoms and chiral symmetry in nuclei'', MESON 2016 14th International Workshop on
meson production, properties and interaction, EPJ Web Conf. 130 (2016) 01017
M.L. Cortes et al., ``Inelastic scattering of 72Ni, 74Ni off a proton target'', XXI INTERNATIONAL SCHOOL ON NUCLEAR PHYSICS,
NEUTRON PHYSICS AND APPLICATIONS & INTERNATIONAL SYMPOSIUM ON EXOTIC NUCLEI (ISEN-2015), J. of Phys. Conf. 724,
(2016) 012008
L. Stuhl et al.: ``A newly developed wrapping method for scintillator detectors'', J. of Phys. Conf. Ser. 665, 012050 (2016).
T. Kröll et al.: ``Nuclear reactions in the storage ring ESR with EXL'', J. of Phys. Conf. Ser. 724, 012026 (2016).
M. Sasano et al.: ``Study of Gamow-Teller transitions from 132Sn via the (p,n) reaction at 220 MeV/u in inverse kinematics'', Eur. Phys. J.
Conf. 107, 06003 (2016).
R. Reifarth et al.: ``Nuclear astrophysics with radioactive ions at FAIR'', J. of Phys. Conf. Ser. 665, 012044 (2016).

[Book](Original Papers) *Subject to Peer Review[Others]ୗᾆ ா: ``ࢸࢺࣛ୰ᛶᏊࡢ᥈ᰝ'', ISOTOPE NEWS, 749, 7--9 (2017)ୗᾆ ா: ``RIࣅ࣮࣒ࢆ⏝࠸ࡓࢸࢺࣛ୰ᛶᏊ◊✲'', ཎᏊ᰾◊✲, 61, 70--77 (2017)

Oral Presentations[International Conference etc.]
H. Yamaguchi (oral): ``Study on alpha-cluster levels in non-4n nuclei using low-energy RI beams'', 11th International Conference on
Clustering Aspects of Nuclear Structure and Dynamics, May 23-27, 2016, Conference Center of the Universita di Napoli Federico II, Napoli,
Italy.
H. Shimizu (oral): ``Searching for the origin of galactic Al-26 with an experiment using isomeric Al-26 beam”, NIC-XIV School, June 13--16,
2016, Niigata University, Niigata, Japan.
H. Yamaguchi (oral, invited): ``Experimental studies of light-ion nuclear reactions using low-energy RI beams'', the 14th International
Symposium on Nuclei in the Cosmos (NIC-XIV), June 19--24, 2016, Toki Messe, Niigata, Japan.
H. Yamaguchi (oral): ``Overview of CRIB projects'', the Second Sicily-East Asia Workshop on Low Energy Nuclear Physics (SEA2016),
June 26--28, 2016, CNS, the University of Tokyo, Wako, Saitama, Japan.
S. Hayakawa (oral): ``Trials for the cosmological 7Li problem with 7Be beams at CRIB and collaborating studies'', the Second Sicily-East Asia
Workshop on Low-energy Nuclear Physics (SEA2016), June 26-28, 2016, CNS, the University of Tokyo, Wako, Saitama, Japan.
H. Yamaguchi (oral): ``Recent activities at the low-energy RI beam separator CRIB'', RIBF users meeting 2016, Sep. 8-9, 2016, RIKEN,
Wako, Saitama, Japan.
H. Yamaguchi (oral): ``Overview of recent experiments at CRIB'', SKKU mini workshop, Oct. 11, 2016, Sungkyunkwan University, Suwon,
Korea.
S. Hayakawa (oral): ``Upcoming CRIB experiment: 7Be + n reaction measurements by the Trojan horse method'', SKKU mini Workshop, Oct.
11, 2016, Suwon, Korea.
H. Yamaguchi (oral): ``Introduction of the low-energy RI beam facility CRIB and recent research activities at CRIB'', Nuclear Physics Seminar,
Oct. 25, 2016, Beihang University, Beijing, China.
1,PDL2('2DQGSURWRQUHVRQDQFHHODVWLFVFDWWHULQJ LQYLWHG HIAS2016 2016/9/18-20, Canberra, Australia
1,PDL3K\VLFVSURJUDPZLWKORZ-HQHUJ\5,EHDPV LQYLWHG 2016/11/16-18 Daejeong, Korea, RNC-RISP RIB physics workshop
N. Shimizu, “Shape phase transition and shell evolution in large-scale shell-model calculations”, 8th Workshop on Quantum Phase
Transitions in Nuclei and Many-Body Systems, Jun. 6-9, 2016, Prague, Czech Republic.
Y. Utsuno (invited), N. Shimizu, T. Otsuka, “Shell-model applications to gamma-ray strength function and level density”, NUSPIN 2016
Workshop of the Nuclear Spectroscopy Instrumentation Network and AGATA Physics Workshop, Jun. 27-Jul. 1, 2016, Venice, Italy.
N. Tsunoda, “Island of Inversion by microscopically derived shell-model Hamiltonian”, Direct Reactions with Exotic Beams (DREB) 2016, Jul.
11-15, 2016, Halifax, Canada.

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Ⅵ. RNC ACTIVITIESY. Tsunoda, “Monte Carlo shell model calculations for structure of nuclei around Z=28”, The 15th CNS International Summer School, Aug.
24-30, 2016, Wako, Japan.
N. Shimizu, “Large-scale shell-model studies for exotic nuclei and nuclear level densities”, International Conference Nuclear Theory in the
Supercomputing Era - 2016, Sep. 19-23, 2016, Khabarovsk, Russia.
N. Shimizu, “Clustering structure in no-core Monte Carlo shell model”, Workshop on Nuclear Cluster Physics (WNCP2016), Nov. 14-17,
2016, Yokohama, Japan.
J. Menéndez, “Towards double-beta decay matrix elements with theoretical uncertainties”, First Tsukuba-CCS-RIKEN joint workshop on
microscopic theories of nuclear structure and dynamics, Dec. 12-16, 2016, Tsukuba, Japan.
N. Shimizu, “Nuclear shell-model calculations in HPC”, First Tsukuba-CCS-RIKEN joint workshop on microscopic theories of nuclear
structure and dynamics, Dec. 12-16, 2016, Tsukuba, Japan.
Y. Utsuno, S. Yoshida, N. Shimizu, T. Otsuka, T. Togashi, T. Suzuki, M. Honma, “Shell-model study of Gamow-Teller and first-IRUELGGHQȕ
decay in the N=28 region”, 6th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, Mar. 20-24, 2017, Chamrousse,
France.
S. Shimoura (invited): ``Tetraneutron states populated via 4He(8He, 8Be) reaction'', The 11th International Conference on Clustering
Aspects of Nuclear Structure and Dynamics (Cluster16), May. 23--27, 2016, Naples, Italy.
S. Shimoura (Oral): ``Tetra-neutron states populated by 4He(8He,8Be) reaction'',The 9th International Conference on Direct Reactions with
Exotic Beams (DREB2016), July 11--15, 2016,Halifax, Canada.
S. Shimoura (invited):``Interplay between reaction and structure in nuclear physics'', International Symposium on Modern Technique and its
Outlook in Heavy ion Science (MOTO16), June 26--27, 2016, Rikkyo University, Tokyo, Japan.
M. Dozono (Oral): ``Separated flow operation of the SHARAQ spectrometer for in-flight proton-decay experiments'',International Symposium
on Modern Technique and its Outlook in Heavy ion Science (MOTO16), June 26--27, 2016, Rikkyo University, Tokyo, Japan.
S. Michimasa (Invited): ``New Beamline with Optimized Energy-degrading Optics of RI beams'', The Second Sicily-East Asia Workshop on
Low Energy Nuclear Physics (SEA2), June 26--28, 2016, Nishina Hall, RIKEN, Wako, Saitama, Japan.
S. Shimoura: ``Experimental studies of the tetra-neutron system by using RI-beam'', RIBF Discussion on the tetra-neutron system,
August 3, 2016, Tohoku University, Sendai, Japan
S. Shimoura (invited):``Experimental studies of the tetra-neutron system by using RI-beam'', The 23rd European Conference on Few-Body
Problems in Physics, Aug. 8--12, 2016, Aarhus, Denmark.
S. Michimasa (Invited):`` Recent Achievement of OEDO/SHARAQ system'', RIBF Users Meeting 2016, September 8--9, 2016, RIBF
Conference Hall, RIKEN, Wako, Saitama, Japan.
S. Shimoura (invited): ``Charge Exchange Reaction of RI Beam to Populate Exotic States'', International Nuclear Physics Conference(INPC2016), Sep. 11--16, 2016, Adelaide, Australia.
S. Michimasa (Oral): ``Sharaq Spectrometer: High-resolution Spectroscopy Using Exotic Beams And Reactions'', International Nuclear
Physics Conference (INPC2016), Sep. 11--16, 2016, Adelaide, Australia.
S. Michimasa (Oral): ``OEDO Beamline: New Energy-degrading Ion Optics of RI Beams'', International Nuclear Physics Conference(INPC2016), Sep. 11--16, 2016, Adelaide, Australia.
R. Yokoyama (Oral): ``Role Of Hexadecupole Deformation In The Shape Evolution Of Neutron-rich Nd Isotopes'', International Nuclear
Physics Conference (INPC2016), Sep. 11--16, 2016, Adelaide, Australia.
M. Kobayashi (Oral): ``Time-of-flight Mass Measurements Of Neutron-rich Calcium Isotopes Beyond N=34”, International Nuclear Physics
Conference (INPC2016), Sep. 11--16, 2016, Adelaide, Australia.
M. Takaki (Oral): ``Search for Double Gamow-Teller Resonance via Heavy-ion Double Charge Exchange Reaction'', International Nuclear
Physics Conference (INPC2016), Sep. 11--16, 2016, Adelaide, Australia.
S. Shimoura (invited):{``Tetra-neutron system populated by exothermic double-charge exchange reaction $^4$He($^8$He,$^8$Be) at 190
MeV/u''},The 22nd International Spin Symposium, Sep. 25--30, 2016,Champaign, IL, USA.
S. Shimoura (invited): ``Tetra-neutron system studied by 4He(8He, 8Be)'', ECT* Workshop on Physics beyond the limits of stability: exploring
the continuum, Oct. 17--21, 2016, Trento, Italy
S. Michimasa (Invited): ``New energy-degraded beam project at RIBF -- OEDO project --'',KPS 2016 Fall Meeting, October 19--21, 2016,
Kimdaejung Convention Center, Gwangju, Korea.
S. Shimoura (invited):``Tetra-neutron system studied by 4He(8He,8Be)'', Workshop on Nuclear Cluster Physics (WNCP2016), Oct. 17--21,
2016, Kanto-Gakuin University, Yokohama, Japan
S. Shimoura (invited): ``Tetra-neutron system studied by using RI beam'',International Symposium on Neutron Star Matter (NSMAT2016),
Recent Progress in Observations, Experiments and Theories, Oct. 21--24, 2016, Tohoku University, Sendai, Japan
S. Shimoura (invited):``Tetra-neutron system populated by reaction of exotic beam'',ESNT Workshop on Dynamics of highly unstable exotic
light nuclei and few-body systems, January 30--February 3, 2017, Saclay, France
T. Gunji (Oral) for the ALICE Collaboration: “Low mass dielectron measurements in pp, p-Pb, and Pb-Pb collisions with ALICE at the LHC”,
The 8th International Conference on Hard and Electromagnetic Probes of High-energy Nuclear Collisions (Hard Probes 2016), 9/23-27,
2016, Wuhan, China
T. Gunji (Oral) for the ALICE Collaboration: “Physics with heavy-ions and Dark Photon Searches at the LHC-ALICE experiment”, Apsen
workshop on Particle Physics in 2017 : From the LHC to Dark Matter and Beyond, 3/20-25, 2017, Aspen, Colorado, USA, 3/20-3/25
Y. Watanabe (Oral) ; “Experimental overview on hadronic resonance production in high-energy nuclear collisions”, The 16th International
Conference on Strangeness in Quark Matter (Strangeness in Quark Matter 2016), 6/26-7/1, 2016, Berkeley, USA
Y. Watanabe (Oral) for the ALICE Collaboration, “ALICE Overview”, 33rd Winter Workshop on Nuclear Dynamics, 1/8-14, 2017, Salt Lake City,USA
S. Ota (invited), ``CNS Active Target (CAT) for high-intensity beam experiment and the first experiment at RIBF'', Workshop on Software forTime Projection Chamber for Nuclear Physics Experiments, Aug. 8-10, 2016, MSU, US
H. Tokieda (invited), ``Event Search Algorithm for CAT'', Workshop on Software for Time Projection Chamber for Nuclear Physics
Experiments, Aug. 8-10, 2016, MSU, US
C. Iwamoto (invited), ``Simulation for high-intensity heavy-ion beam injection in CAT'', Workshop on Software for Time Projection Chamber
for Nuclear Physics Experiments, Aug. 8-10, 2016, MSU, US- 448 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

L. Stuhl et al. (oral): ``A new low-energy plastic scintillation neutron detector for real time pulse shape discrimination'': The 26th International
Nuclear Physics Conference (INPC2016), Sep 11—16, 2016, Adelaide, Australia.
[Domestic Conference]᪩ᕝໃஓ (oral) : ͆ࢺࣟ࢖ࡢᮌ㤿ἲ࡟ࡼࡿ 7Be+n ࣅࢵࢢࣂࣥඖ⣲ྜᡂ཯ᛂࡢ ᐃ (Measurement of the 7Be+n Big-Bang nucleosynthesis
reactions by the Trojan horse method) ͇, ᪥ᮏ≀⌮Ꮫ఍ ➨ 72 ᅇᖺḟ኱఍, 3 ᭶ 17 ᪥㹼20 ᪥, ኱㜰኱ᏛΎỈⱥᶞ (oral) : ͆CRIB ࡟࠾ࡅࡿ 26Al ␗ᛶ᰾཯ᛂࡢᏱᐂȚ⥺ほ 㔞࡬ࡢᐤ୚ࡢ◊✲㸦Study on e contribution of isomeric aluminum-26
reaction to cosmic gamma-ray observation with CRIB㸧͇, ᪥ᮏ≀⌮Ꮫ఍ ➨ 72 ᅇᖺḟ኱఍, 3 ᭶ 17 ᪥㹼20 ᪥, ኱㜰኱Ꮫ
N. Kitamura et al., “Shell structure of $^{35}$Si studied by proton resonance scattering”, JPS 2016 fall meeting
O. Beliuskina et al., “Pulse height defect in CVD Diamond Detectors”, JPS 2016 fall meeting
N. Imai, “Single particle structure studies with the transfer reaction and the resonance elastic reaction” (invited) JPS meeting 2017,
symposium for New aspects of direct reactions in probing exotic nuclei
ゅ⏣భ௓ࠊ኱ሯᏕ἞ࠊΎỈ๎Ꮥࠊᮏ㛫㐨㞝ࠊᏱ㒔㔝✨ࠊ͆኱つᶍẆᶍᆺィ⟬࡟ࡼࡿ Z=28 ㏆ഐࡢ᰾ᵓ㐀ࡢ◊✲͇ࠊ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍ࠊSep. 21-24, 2016ࠊᐑᓮ኱Ꮫᮌⰼ࢟ࣕࣥࣃࢫࠊᐑᓮ
ᐩᶔᬛ❶ࠊゅ⏣భ௓ࠊ኱ሯᏕ἞ࠊΎỈ๎Ꮥࠊ͆Zr ྠ఩య࡟࠾ࡅࡿᙧࡢ㔞Ꮚ┦㌿⛣ࡢࣔࣥࢸ࢝ࣝࣟẆᶍᆺ࡟ࡼࡿ◊✲͇ࠊ᪥ᮏ≀⌮Ꮫ఍ 2016ᖺ⛅Ꮨ኱఍ࠊSep. 21-24, 2016ࠊᐑᓮ኱Ꮫᮌⰼ࢟ࣕࣥࣃࢫࠊᐑᓮ
ྜྷ⏣஽ࠊΎỈ๎Ꮥࠊ㜿㒊ႛࠊ኱ሯᏕ἞ࠊ͆Be, C ྠ఩యࡢ intrinsic ≧ែࡢࣔࣥࢸ࢝ࣝࣟẆᶍᆺ࡟ࡼࡿ◊✲͇ࠊ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱
఍ࠊSep. 21-24, 2016ࠊᐑᓮ኱Ꮫᮌⰼ࢟ࣕࣥࣃࢫࠊᐑᓮ
ᐩᶔᬛ❶ࠊゅ⏣భ௓ࠊ኱ሯᏕ἞ࠊΎỈ๎Ꮥࠊ͆Zr ྠ఩య࡟࠾ࡅࡿᙧࡢ㔞Ꮚ┦㌿⛣ࡢࣔࣥࢸ࢝ࣝࣟẆᶍᆺ࡟ࡼࡿ◊✲͇ࠊ◊✲఍ࠕࢡࣛࢫࢱ࣮࣭
ᖹᆒሙࡢ୧ഃ㠃࠿ࡽぢࡿཎᏊ᰾ᵓ㐀ࡢከᵝᛶ࡜ࡑࡢࢲ࢖ࢼ࣑ࢡࢫࠖࠊJan. 19-20, 2017ࠊ኱㜰ᕷ❧኱Ꮫࠊ኱㜰ᕷᕝ㝯ᩄࠊΎỈ๎ᏕࠊᏱ㒔㔝✨ࠊ኱ሯᏕ἞ࠊ͆኱つᶍẆᶍᆺィ⟬࡟ࡼࡿ㉁㔞ᩘ A=40 㡿ᇦ࡟࠾ࡅࡿ 4p-4h ኚᙧ≧ែࡢ⣔⤫ⓗ᥈⣴͇ࠊ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊMar. 17-20, 2017ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ኱㜰Ᏹ㒔㔝✨ࠊ⸨⏣ెᏕࠊ͆஧᰾Ꮚ㓄఩ࡢ࢞ࣔࣇࢸ࣮ࣛ㑄⛣࡜㝧Ꮚ୰ᛶᏊᑐ┦㛵͇ࠊ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊMar. 17-20, 2017ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ኱㜰ΎỈ๎Ꮥࠊᐩᶔᬛ❶ࠊ኱ሯᏕ἞ࠊᏱ㒔㔝✨ࠊྜྷ⏣⪽ኴࠊ͆࣋࢖ࢬ⤫ィ࡟ࡼࡿẆᶍᆺィ⟬ゎᯒ͇ࠊ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊMar. 17-20,
2017ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ኱㜰ゅ⏣┤ᩥࠊ኱ሯᏕ἞ࠊ㕥ᮌಇኵࠊ㧗ᰗ࿴㞝ࠊΎỈ๎ᏕࠊMorten Hjorth-Jensenࠊ͆᰾ຊ࡟౫ᣐࡋࡓ᭷ຠ┦஫స⏝࡟ࡼࡿẆᶍᆺィ⟬࡛ࡳࡿࠕ㏫㌿ࡢᓥࠖࡢ᪂ࡋ࠸ᵝ┦͇ࠊ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊMar. 17-20, 2017ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ኱㜰ゅ⏣భ௓ (ཷ㈹ㅮ₇)ࠊ͆Ni ྠ఩య࡟࠾ࡅࡿ᪂ወ࡞ኚᙧඹᏑ⌧㇟࡜᰾Ꮚ㓄఩࡟౫ᏑࡋࡓẆ㐍໬ࡢ◊✲͇ࠊ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ
Mar. 17-20, 2017ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ኱㜰ᐩᶔᬛ❶ࠊゅ⏣భ௓ࠊ኱ሯᏕ἞ࠊΎỈ๎Ꮥࠊ͆Zr ྠ఩య࡜ࡑࡢ㏆ഐ᰾࡟࠾ࡅࡿᙧࡢ㔞Ꮚ┦㌿⛣ࡢࣔࣥࢸ࢝ࣝࣟẆᶍᆺ࡟ࡼࡿ◊✲͇ࠊ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊMar. 17-20, 2017ࠊ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫࠊ኱㜰ゅ⏣┤ᩥࠊ͆Medium-mass nuclei from nuclear force͇ࠊᇶ◊◊✲఍ࠕ᰾ຊ࡟ᇶ࡙ࡃ᰾ᵓ㐀ࠊ᰾཯ᛂ≀⌮ࡢᒎ㛤ࠖࠊMar. 27-29, 2017ࠊி㒔኱Ꮫᇶ♏≀⌮Ꮫ◊✲ᡤࠊி㒔ୗᾆ ா (invited): ``࢖࢜ࣥࣅ࣮࣒ࢆ⏝࠸ࡓཎᏊ᰾◊✲࡜ ᨺᑕ⥺ィ ᢏ⾡ࡢ⌧≧࡜ㄢ㢟'', ᨺᑕ⥺⛉Ꮫ࡜ࡑࡢᛂ⏝➨㸯㸶㸴ጤဨ఍ ➨㸯㸷ᅇ◊✲఍, 2016ᖺ5᭶19᪥, ᮾி኱Ꮫᒣୖ఍㤋, ᮾிୗᾆ ா (invited): ``RIࣅ࣮࣒ࢆ⏝࠸ࡓཎᏊ᰾≀⌮Ꮫ◊✲࡜ᨺᑕ⥺ ᐃᢏ⾡'', ➨62ᅇᨺᑕ⥺ィ ◊✲఍, 2016ᖺ10᭶15᪥, ୕⳻⥲ྜ◊✲ᡤ,ᮾி
S. Shimoura (invited):”Tetra-neutron system populated by exothermic double-charge exchange reaction'', ᇶ◊◊✲఍ࠕ᰾ຊ࡟ᇶ࡙ࡃ᰾ᵓ㐀ࠊ᰾཯ᛂ≀⌮ࡢᒎ㛤ࠖ, 2017ᖺ3᭶27--29᪥, ி㒔኱Ꮫ, ி㒔.
S. Masuoka ௚: ``」ᩘ୰ᛶᏊ㆑ูࡢࡓࡵࡢ཯㊴㝧Ꮚ㣕㊧᳨ฟჾࡢ㛤ⓎII'', JPS Fall meeting, September 21--24, 2016, Miyazaki University,
Miyazaki, JapanY. Yamaguchi, ௚: ``DSPࢆ⏝࠸ࡓከ㔜࣐࢞ࣥ⥺᳨ฟ⏝Ge᳨ฟჾ࢔ࣞ࢖ࡢⅭࡢࢹ࣮ࢱ཰㞟⣔ࡢ㛤Ⓨ2'', JPS Fall meeting, September 21--24,
2016, Miyazaki University, Miyazaki, Japan
M. Kobayashi ௚: ``㣕⾜᫬㛫ἲࢆ⏝࠸ࡓ୰ᛶᏊᩘ34㏆ഐCaྠ఩యࡢ㉁㔞 ᐃ'', JPS Fall meeting, September 21--24, 2016, Miyazaki
University, Miyazaki, JapanR. Yokoyama, ௚: ``୰ᛶᏊ㐣๫Ndྠ఩యࡢኚᙧ㐍໬࡟࠾ࡅࡿ༑භ㔜ᴟኚᙧࡢຠᯝ'', JPS Fall meeting, September 21--24, 2016, Miyazaki
University, Miyazaki, Japan
S. Shimoura (invited): ``New energy degraded beam line at RIBF -- OEDO'',ࠕ㉸㔜ඖ⣲ࡢ᪂ᒎ㛤ࠖࢩ࣏ࣥࢪ࣒࢘, JPS Spring meeting,March 17--20, 2017, Osaka University, Osaka, Japanᑠ㧗ᗣ↷(oral):ࠕ4 ḟඖ࢚࣑ࢵࢱࣥࢫࢹ࣮ࢱ࡟ࡼࡿ AVF ධᑕ㌶㐨ゎᯒࠖ㸪➨ 13 ᅇ AVF ྜྠᡴྜࡏ㸪2016 ᖺ 10 ᭶ 27-28 ᪥㸪ᮾ໭኱Ꮫ CYRI
኱ᇛᖾග(oral):ࠕCNS ࢖࢜ࣥ※ࡢ⌧≧ࠖ㸪➨ 13 ᅇ AVF ྜྠᡴྜࡏ㸪2016 ᖺ 10 ᭶ 27-28 ᪥㸪ᮾ໭኱Ꮫ CYRIC
S. +D\DVKLIRUWKH$/,&(&ROODERUDWLRQ'LHOHFWURQSURGXFWLRQIURP+HDY\4XDUNVLQS-Pb collisions at ¥sNN = 5.02 TeV with the ALICEGHWHFWRU-36$XWXPQ0HHWLQJ6HS-24, University of Miyazaki, Miyazaki, Japan
K. Terasaki for the ALICE Collabroation, “Search for exotic dibaryons and study of baryon-baryon correlations at LHC-ALICE”, JPS 2016
Autumn Meeting, Sep. 21-24, University of Miyazaki, Miyazaki, Japan
Y. Sekiguchi for the ALICE Collaboration, “”Study of two particle correlations in p-3EFROOLVLRQVDW¥VNN = 5.02 TeVwith ALICE”, JPS 2016
Autumn Meeting, Sep. 21-24, University of Miyazaki, Miyazaki, Japan኱⏣᫴㍜ࠊ``㔜Ỉ⣲࢔ࢡࢸ࢕ࣈᶆⓗࢆ⏝࠸ࡓ㘏㡿ᇦ୙Ᏻᐃ᰾ࡢᕧ኱ඹ㬆ࡢ ᐃ''᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍ࠊ2017 ᖺ 3 ᭶ 17 ᪥ࠥ2017ᖺ 3 ᭶ 20 ᪥ࠊ኱㜰኱Ꮫ኱⏣᫴㍜(invited)ࠊ``CNS Active Target''ࠊ᪂Ꮫ⾡㡿ᇦࠗ୰ᛶᏊᫍ᰾≀㉁࠘➨஧ᅇ᳨ฟჾ࣮࣡ࢡࢩࣙࢵࣉ
Posters Presentations[International Conference etc.]
S. Hayakawa, C. Spitaleri, N. Burtebayev, A. Aimaganbetov, S.V. Artemov, P. Figuera, M. Fisichella, G.L. Guardo, S. Igamov, I. Indelicato,
G.G. Kiss, S. Kubono, M. La Cognata, L. Lamia, M. Lattuada, M. Nassurlla, E. Piasecki, G.G. Rapisarda, S. Romano, S.B. Sakuta, A.
Trzcinska, A. Tumino, A. Urkinbayev, and T. Zholdybayev (poster): ``Trojan Horse Method for the Oxygen-Burning Process Reactions'',
The 14th International Symposium on Nuclei in the Cosmos (NIC2016), Jun. 19-24, Niigata, Japan- 449 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

K. Abe, S. Hayakawa, H. Yamaguchi, and L. Lamia (poster) : ``Feasibility Study for the 7Be+n Reaction Measurements by Trojan Horse
Method at CRIB'', The 14th International Symposium on Nuclei in the Cosmos (NIC2016), Jun. 19-24, Niigata, Japan
T. Togashi, “E1 strength function in Monte Carlo shell model”, The 15th CNS International Summer School, Aug. 24-30, 2016, Wako, Japan.
T. Yoshida, “Structure of Be and C isotopes with large-scale shell model calculations”, The 15th CNS International Summer School, Aug.
24-30, 2016, Wako, Japan+0XUDNDPLIRUWKH$/,&(&ROODERUDWLRQ0HDVXrements of neutral mesons in pp collisions at ¥s = 5.02TeV via conversion method with$/,&(Quark Matter 2017, Feb. 5-11, 2017, Chicago, USA[Domestic Conference]ᑠ㧗ᗣ↷ :ࠕ࣌ࢵࣃ࣮࣏ࢵࢺᆺ࢚࣑ࢵࢱࣥࢫ
ᖺ 8 ᭶ 8-10 ᪥㸪ᖥᙇ࣓ࢵࢭᅜ㝿఍㆟ሙᐃჾࢆ⏝࠸ࡓ⌮◊ AVF ࢧ࢖ࢡࣟࢺࣟࣥධᑕ⣔ࡢゎᯒࠖ㸪➨ 13 ᅇ᪥ᮏຍ㏿ჾᏛ఍ᖺ఍㸪2016- 450 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Partner Institution
Center for Radioactive Ion Beam Sciences
Institute of Natural Science and Technology, Niigata University
1. Abstract
The Center for Radioactive Ion Beam Sciences, Niigata University, aims at uncovering the properties of atomic nuclei and heavy
elements and their roles in the synthesis of elements, with use of the advanced techniques of heavy ion and radioactive ion beam
experiments as well as the theoretical methods. Main research subjects include the measurements of various reaction cross sections andmoments of neutron- or proton-rich nuclei, synthesis of super-heavy elements and radio-chemical studies of heavy nuclei, and theoreticalstudies of exotic nuclei based on quantum many-body methods and various nuclear models. In addition, we promote interdisciplinary
researches related to the radioactive ion beam sciences, such as applications of radioactive isotopes and radiation techniques to materialsciences, nuclear engineering and medicine. Many of them are performed in collaboration with RIKEN Nishina Center and with use of the
RIBF facilities. The center emphasizes also its function of graduate education in corporation with the Graduate School of Science andTechnology, Niigata University, which invites three researchers in RIKEN Nishina Center as visiting professors.

2. Major Research Subjects(1) Reaction cross section and radii of neutron-rich nuclei(2) Production of superheavy nuclei and radiochemistry of heavy elements(3) Nuclear theory

3. Summary of Research Activity(1) Measurements of matter and charge radii of exotic nuclei
The experimental nuclear physics group has studied the nuclear structures of exotic nuclei through the measurements of nuclear matterradii. The nuclear matter radii can be determined from interaction cross sections with the use of nuclear reaction model. At RIBF, RIKEN,
we have performed experiments to measure interaction cross sections of F, Ne, Na, Mg, and Al isotopes and clarified the halo structure of
31Ne, and also the development of strong deformation in those isotopes, 28-32Ne, 32-38Mg, which are located around and beyond the “islandof inversion” region. Recently our new project to explore the equation of state (EOS) of nuclear matter has been started. For theunderstanding of the EOS of asymmetric nuclear matter, either highly proton deficient or neutron deficient, the investigation of thedevelopment of neutron skin thickness in the exotic nuclei give the crucial information. We have measured interaction cross sections andcharge changing cross sections for 58-78Ni using BigRIPS fragments separator at RIBF in FY2016. While nuclear matter radii can be
determined from interaction cross sections, the proton distribution radii will be determined from charge-changing cross sections, thus
neutron skin thickness will be obtained. The data analysis are in progress.
(2) Production of superheavy nuclei and radiochemistry of heavy elements
The nuclear chemistry group has been investigating decay properties of super-heavy nuclei, measured the excitation functions ofrutherfordium isotopes, and clarified the ambiguity of the assignment of a few-second spontaneously fissioning isotope of 261Rf. The new
equipment designed for measurement of short-lived alpha emitters is under development.
For the chemistry research of super-heavy elements, preparatory experiments, such as solvent extraction for the group 4, 5, and 6thelements and gaseous phase chemistry for group-4 elements, have been performed using radioisotopes of corresponding homolog elements.
(4) Nuclear theory
One of the main activities of the nuclear theory group concerns with developments of the nuclear density functional theory and explorationof novel correlations and excitations in exotic nuclei. A fully selfconsistent scheme of the quasiparticle random phase approximation(QRPA) on top of the Skyrme-Hartree-Fock-Bogoliubov mean-field for deformed nuclei has been developed in the group. The versatility ofthis method to describe the deformation splitting of the giant resonances associated with the onset of deformation has been demonstrated
for the first time by the intensive numerical calculation performed for the light nuclei such as 28Si and the comparison with the recent
experimental data. For the medium-heavy nuclei, softening of the gamma vibration in the neutron-rich Dy isotopes observed by the
EURICA experiment was successfully described, and the microscopic mechanism was made clear. The QRPA in the density functionalframework has been developed in various directions. The continuum QRPA, which describes not only collective correlations but also
coupling to unbound continuum states of nucleons, has been applied to describe the direct neutron capture reaction in the r-process
nucleosynthesis. The QRPA is recently applied to describe collective excitation in inner crust of neutron stars. The continuum quasiparticle
states are also analyzed to study possible pairing effects on low-lying p-wave resonances and s-wave scattering states in unbound odd-N
nuclei. Cluster structure and the ab initio studies of light nuclei are also important research subjects of the theory group.

Members
Director
Masayuki MATSUO (Professor)- 451 -

RIKEN Accel. Prog. Rep. 50 (2017)

Scientific Staff
Hisaaki KUDO (Professor)
Takashi OHTSUBO (Associate Professor)
Shin-ichi GOTO (Associate Professor)
Shigeyoshi AOYAMA (Associate Professor)
Takuji IZUMIKAWA (Associate Professor)

Ⅵ. RNC ACTIVITIESKenichi YOSHIDA (Assistant Professor)
Kazuhiro OOE (Assistant Professor)
Jun GOTO (Assistant Professor)
Maya TAKECHI (Assistant Professor)

Post Doctoral Associates
Tsunenori INAKURA
Graduate Students
Yoshihiko KOBAYASHI

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
T. Peach, U. Garg, Y. K. Gupta, J. Hoffman, J. T. Matta, D. Patel, P. V. Madhusudhana Rao, K. Yoshida, M. Itoh, M. Fujiwara, K. Hara, H.
Hashimoto, K. Nakanishi, M. Yosoi, H. Sakaguchi, S. Terashima, S. Kishi, T. Murakami, M. Uchida, Y. Yasuda, H. Akimune, T. Kawabata,
M. N. Harakeh, and G. Colò, “Effect of ground-state deformation on isoscalar giant resonances in 28Si”, Physical Review C 93, 064325(2016).*
H. Watanabe, G. X. Zhang, K. Yoshida, P. M. Walker, J. J. Liu, J. Wu, P. H. Regan, P.-A. Soderstrom, H. Kanaoka, Z. Korkulu, P. S. Lee, S.
Nishimura, A. Yagi, D. S. Ahn, T. Alharbi, H. Baba, F. Browne, A. M. Bruce, R. J. Carroll, K. Y. Chae, Zs. Dombradi, P. Doornenbal, A.
Estrade, N. Fukuda, C. Griffin, E. Ideguchi, N. Inabe, T. Isobe, S. Kanaya, I. Kojouharov, F. G. Kondev, T. Kubo, S. Kubono, N. Kurz, I.
Kuti, S. Lalkovski, G. J. Lane, C. S. Lee, E. J. Lee, G. Lorusso, G. Lotay, C.-B. Moon, I. Nishizuka, C. R. Nita, A. Odahara, Z. Patel, V. H.
Phong, Zs. Podolyak, O. J .Roberts, H. Sakurai, H. Schaffner, “Long-lived K isomer and enhanced Ȗvibration in the neutron-rich nucleus
172
Dy: Collectivity beyond double midshell”, Physics Letters B760, 641 (2016).*
K. Yoshida and H. Watanabe, “Enhanced collectivity of Ț vibration in neutron-rich Dy isotopes with N=108-110”, Progress of Theoreticaland Experimental Physics 2016, 123D02 (2016).*
Y. Kobayashi, M. Matsuo, “Effects of pairing correlation on the low-lyng quasiparticle resonance in neutron drip-line nuclei”, Progress ofTheoretical and Experimental Physics, 2016, 013D01 (1-14) (2016).*
N. Nakatsuka, H. Baba, T. Aumann, R. Avigo, S.R. Banerjee, A. Bracco, C. Caesar, F. Camera, S. Ceruti, S. Chen, V. Derya, P. Doornenbal,
A. Giaz, A. Horvat, K. Ieki, T. Inakura, N. Imai, T. Kawabata, N. Kobayashi, Y. Kondo, S. Koyama, M. Kurata-Nishimura, S. Masuoka, M.
Matsushita, S. Michimasa, B. Million, T. Motobayashi, T. Murakami, T. Nakamura, T. Ohnishi, H.J. Ong, S. Ota, H. Otsu, T. Ozaki, A. Saito,
H. Sakurai, H. Scheit, F. Schindler, P. Schrock, Y. Shiga, M. Shikata, S. Shimoura, D. Steppenbeck, T. Sumikama, I. Syndikus, H. Takeda,
S. Takeuchi, A. Tamii, R. Taniuchi, Y. Togano, J. Tscheuschner, J. Tsubota, H. Wang, O. Wieland, K. Wimmer, Y. Yamaguchi, K. Yoneda, J.
Zenihiro, “Observation of isoscalar and isovector dipole excitations in neutron-rich 20O”, Physical Letter B 768 (2017) 387-392*
D. T. Tran et al., “Charge-changing cross-section measurements of 12–16C at around 45A MeV and development of a Glauber model forincident energies 10A–2100A MeV”, Phys. Rev. C 94, (2016) 064604<ௗ.7DQDND et al., “Measurement of Excitation Spectra in the 12C(p, d) Reaction near the Șƍ(PLVVLRQ7KUHVKROG´, Phys. Rev. Lett. 117,(2016) 202501
R. Kanungo et al., “Proton Distribution Radii of 12–19C Illuminate Features of Neutron Halos”, Phys. Rev. Lett. 117, (2016) 102501
J. Lee et al., “)LUVW0HDVXUHPHQWRI6HYHUDOȕ-Delayed Neutron Emitting Isotopes Beyond N = 126”, Prog Theor Exp Phys (2016) 2016 (8)R. Caballero-Folch et al., “Asymmetry dependence of reduction factors from single-nucleon knockout of 30Ne at ~230 MeV/nucleon”, Phys.
Rev. Lett. 117, (2016) 012501
P. Doornenbal et al., “Mapping the deformation in the “island of inversion”: Inelastic scattering of 30Ne and 36Mg at intermediate energies”,
Phys. Rev. C 93, (2016) 044306
I. Tanihata et al., “Observation of large enhancements of charge exchange cross sections with neutron-rich carbon isotopes”, Prog Theor
Exp Phys (2016) 2016 (4)M. P. Reiter et al., “Rate capability of a cryogenic stopping cell for uranium projectile fragments produced at 1000 MeV/u”, NIM B 376 (2016)240
Y. Kawano, A. Munaim, J. Goto, Y. Shobugawa and M. Naito, “Sensing Space: Augmenting Scientific Data with Spatial Ethnography”,
GeoHumanities 2, 485 (2016).*(Review)ྜྷ⏣㈼ᕷ㸪ఀ⸨ṇಇ㸪”ኚᙧཎᏊ᰾ࡢᕧ኱༢ᴟඹ㬆”, ᪥ᮏ≀⌮Ꮫ఍ㄅ 72, 45 (2017).
[Proceedings](Original Papers) *Subject to Peer Review
A. Homma et al., “Measurements of Interaction Cross Sections for 19–27F Isotopes”, JPS Conf. Proc. 14, 021010 (2017)
K. Nishizuka et al., “Measurements of Reaction Cross Sections for 9–11C”, JPS Conf. Proc. 14, 021015 (2017)
E. Miyata et al., “Development of High Resolution TOF Detector for RI Beams Using Cherenkov Radiation”, J Acta Phys.Polon. B48 (2017)409
M. Tanaka et al., “Reaction Cross Sections for 13䌦15B and One-neutron Halo in 14B”, J Acta Phys.Polon. B48 (2017) 461
J. Goto, Y. Shobugawa, Y. Kawano, Y. Amaya, T. Izumikawa, Y. Katsuragi, T. Shiiya, T. Suzuki, TA. Takahashi, TO Takahashi, H. Yoshida,
and M. Naito, “Development of a Portable Gamma-ray Survey System for the Measurement of Air Dose Rates”, JPS Conference
Proceedings 11䠈070007 (2016).*- 452 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)[Book](Original Papers) *Subject to Peer Reviewෆ⸨┾, 㟷ᮌⴗᏊ, 㔝୰ᫀἲ, ᚋ⸨῟, Ⳮⵦᕝ⏤㒓, 㧗ᶫಇ༤, ྜྷ⏣⚽⩏, ኳ㇂ྜྷᏹ, Y. Kawano, ᒾబ᭷⳹, 㰻⸨ᬛᏊ, す᪉┿ᘪ, ྜྷᕝኟᶞ, ཎ⏣┤ᶞ, ᒣᇛ⚽᫛, 㧗ᶫ๛, “BISHAMON ࡢ㌶㊧-ϩ 㹼⚟ᓥᨭ᥼ 5 ᖺ㛫ࡢグ㘓㹼”, ᪂₲᪥ሗ஦ᴗ♫(2016)[Others]ྜྷ⏣㈼ᕷ㸪ఀ⸨ṇಇ㸪”ኚᙧཎᏊ᰾ࡢᕧ኱༢ᴟඹ㬆”, ᪥ᮏ≀⌮Ꮫ఍ㄅ 72, 45 (2017).

Oral Presentations[International Conference etc.]
K. Yoshida and H. Watanabe, “Enhanced Collectivity of Gamma Vibration in Neutron-rich Dy Isotopes with N=108-110”, The Nuclear
Structure 2016 Conference, Knoxville, USA, July 24-29, 2016.
K. Yoshida, “Spin-isospin Responses of Deformed Neutron-rich Nuclei”, The 26th International Nuclear Physics Conference, Adelaide,
Australia, September 11-16, 2016.
K. Yoshida, “Low-lying excitations in neutron-rich nuclei: Effects of deformation and pairing”, The first Tsukuba-CCS-RIKEN joint workshop
on Microscopic Theories of nuclear structure and dynamics, RIKEN, Wako, Saitama, December 12-16, 2016.
K. Yoshida, “Roles of neutron excess and deformation on charge-exchange collective modes of excitation”, Recent Progresses in Nuclear
Structure Physics 2016”, YITP, Kyoto, December 19-23, 2016.
Y. Kobayashi, M. Matsuo, “Effects of pairing correlation on low-energy p- and s-wave scattering in neutron-rich nuclei” ECT* Workshop"Physics beyond the limits of stability: exploring the continuum", European Center for Theoretical Studies in Nuclear Physics and Related
Areas, Trento, October 20, 2016.
Y. Kobayashi, M. Matsuo, “Effects of pairing correlation on the low-lying quasiparticle resonance in neutron drip-line nuclei”, International
Nuclear Physics Conference 2016, Adelaide Convention Center, Adelaide, September 13, 2016.
Y. Kobayashi, M. Matsuo, “Single-neutron resonance and pairing correlation in neutron-rich nuclei”, Resonance and non-Hermitian Quantum
Mechanics 2016, 2016 ᖺ 08 ᭶ 04 ᪥,Research Center for Nuclear Physics, August 4, 2016.
T. Inakura, H. Nakada, “Constraining the slope parameter of symmetry energy from nuclear structure”, International symposium on NeutronStar Matter, Tohoku University, Sendai, Miyagi, November 21-24, 2016.
T. Inakura, M. Matsuo, “Calculation of collective excitation of inner crust using density functional theory”, The first Tsukuba-CCS-RIKEN joint
workshop on Microscopic Theories of nuclear structure and dynamics, Center for Computational Science, University of Tsukuba, Tsukuba,
Ibaraki, December 19-23, 2016.
M. Takechi, E. Miyata, et al. “Development of High Resolution TOF detector for RI Beams using Cherenkov Radiation”, ZAKOPANE
Conference on Nuclear Physics, Zakopane, Poland, 28, August - 4, September, 2016.
A. Homma et al., “Measurements of Reaction Cross Section for 19-27F Isotopes”, ZAKOPANE Conference on Nuclear Physics, Zakopane,
Poland, 28, August - 4, September, 2016.
M. Tanaka et al., “Reaction Cross Sections for 13䌦15B and One-neutron Halo in 14B”, ZAKOPANE Conference on Nuclear Physics, Zakopane,
Poland, 28, August - 4, September, 2016.

[Domestic Conference]ྜྷ⏣㈼ᕷ㸪”Deformation effect on giant resonances in 24Mg and 28Si”, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍㸪ᐑᓮ኱Ꮫ㸪9 ᭶(2016).
ྜྷ⏣㈼ᕷ㸪”Variety of excitation modes associated with nuclear deformation and superfluidity”, ࢡࣛࢫࢱ࣮࣭ᖹᆒሙࡢ୧ഃ㠃࠿ࡽぢࡿཎᏊ᰾ᵓ㐀ࡢከᵝᛶ࡜ࡑࡢࢲ࢖ࢼ࣑ࢡࢫ㸪኱㜰ᕷ❧኱Ꮫ㸪㸯᭶(2017).
ྜྷ⏣㈼ᕷ㸪”Charge-exchange dipole excitations in deformed nuclei”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍㸪኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫ㸪3 ᭶(2017).
ᑠᯘⰋᙪ㸪ᯇᑿṇஅ㸪͆ప࢚ࢿࣝࢠ࣮㹑Ἴᩓ஘ࡀཷࡅࡿᑐ┦㛵ຠᯝࡢ㹑⾜ิ࡟ࡼࡿศᯒ͇㸪᪥ᮏ≀⌮Ꮫ఍➨㸵㸰ᅇᖺḟ኱఍,኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫ, 2017 ᖺ 3 ᭶ᑠᯘⰋᙪࠊᯇᑿṇஅ㸪͆୰ᛶᏊ㐣๫᰾࡟࠾ࡅࡿ㹑Ἴᩓ஘ࡀཷࡅࡿᑐ┦㛵ຠᯝ͇㸪᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍,ᐑᓮ኱Ꮫ㸪2016 ᖺ 9 ᭶✄಴ᜏἲ, ᯇᑿṇஅ, “୰ᛶᏊᫍෆẆ࡟࠾ࡅࡿ㉸ὶື୰ᛶᏊ࣭ཎᏊ᰾⣔ࡢ㞟ᅋ㐠ື”, ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍,ᐑᓮ኱Ꮫ㸪2016 ᖺ 9 ᭶✄಴ᜏἲ, ᯇᑿṇஅ, “୰ᛶᏊᫍෆẆ࡟࠾ࡅࡿ㉸ὶື୰ᛶᏊ࣭ཎᏊ᰾⣔ࡢ㞟ᅋ㐠ື”, ࢡࣛࢫࢱ࣮࣭ᖹᆒሙࡢ୧ഃ㠃࠿ࡽぢࡿཎᏊ᰾ᵓ㐀ࡢከᵝᛶ࡜ࡑࡢࢲ࢖ࢼ࣑ࢡࢫ㸪኱㜰ᕷ❧኱Ꮫ㸪2017 ᖺ 1 ᭶✄಴ᜏἲ, “୰ᛶᏊᫍෆẆ࡟࠾ࡅࡿ㉸ὶື୰ᛶᏊ࡜ཎᏊ᰾ࡢ㞟ᅋ㐠ື”, ᐇ㦂࡜ほ ࡛ゎࡁ᫂࠿ࡍ୰ᛶᏊᫍࡢ᰾≀㉁ ➨㸳ᅇ࢘࢕ࣥࢱ࣮ࢫࢡ࣮
࣭ࣝ◊✲఍, 㣤ᆏ Ἠ, ⚟ᓥ 2017 ᖺ 2 ᭶✄಴ᜏἲ, ᯇᑿṇஅ, “ᐦᗘỗ㛵ᩘ⌮ㄽ࡟ࡼࡿ୰ᛶᏊෆẆࡢ㞟ᅋບ㉳࣮ࣔࢻ”, ᪥ᮏ≀⌮Ꮫ఍➨ 72 ᅇᖺḟ኱఍, ኱㜰኱Ꮫ㇏୰࢟ࣕࣥࣃࢫ, 2017ᖺ3᭶⚟⏣ග㡰, ⏣୰ᝆኴ㑻, ⏣୰⪷⮧, すᮧኴᶞ, Ṋᬛ㯞⪨ ࡯࠿ 29 ྡ "6,8He ࡢ୰ᛶᏊ๤㞳᩿㠃✚࡜Ⲵ㟁ኚ໬᩿㠃✚", ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍ ᐑᓮ኱Ꮫ 2016 ᖺ 9 ᭶ 21 - 24 ᪥⏣୰ᝆኴ㑻, ⚟⏣ග㡰, すᮧኴᶞ, Ṋᬛ㯞⪨, ⏣୰⪷⮧, ࡯࠿ 33 ྡ "཯ᛂ᩿㠃✚ ᐃ࡟ࡼࡿ 6,8He ࡢ᰾ᵓ㐀" ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍ ᐑᓮ኱Ꮫ 2016 ᖺ 9 ᭶ 21 - 24 ᪥ᮭ⯟, ⚟⏣ග㡰, すᮧኴᶞ, Ṋᬛ㯞⪨, Ᏻ㒊ᩗ἞㑻 ࡯࠿ 36 ྡ "15,16C ࡢ཯ᛂ᩿㠃✚࡜᰾ᵓ㐀", ᪥ᮏ≀⌮Ꮫ఍ 2016 ᖺ⛅Ꮨ኱఍ ᐑᓮ኱Ꮫ2016 ᖺ 9 ᭶ 21 - 24 ᪥
኱すᗣ௓, ⚟⏣ග㡰, すᮧኴᶞ, Ṋᬛ㯞⪨, 㟷ᮌ୍▮ ࡯࠿ 34 ྡ, "୰㛫࢚ࢿࣝࢠ࣮㡿ᇦ࡟࠾ࡅࡿ 12N ࡢ཯ᛂ᩿㠃✚࡜᰾ᵓ㐀" ᪥ᮏ≀⌮Ꮫ఍
2016 ᖺ⛅Ꮨ኱఍ ᐑᓮ኱Ꮫ 2016 ᖺ 9 ᭶ 21 - 24 ᪥ᮏ㛫ᙲ ࡯࠿ 67 ྡ "୰ᛶᏊ㐣๫ഃ Ni ྠ఩యࡢ┦஫స⏝᩿㠃✚ ᐃ", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶ 17 - 20 ᪥୰ᮧ⩧೺, Ṋᬛ㯞⪨ ࡯࠿ 67 ྡ "Ni 㡿ᇦ୰㔜᰾ࡢ㝧Ꮚᶆⓗ┦஫స⏝᩿㠃✚ ᐃ", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶
17 - 20 ᪥- 453 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES୰ᮧ⩧೺, Ṋᬛ㯞⪨ ࡯࠿ 67 ྡ "Ni 㡿ᇦ୰㔜᰾ࡢ㝧Ꮚᶆⓗ┦஫స⏝᩿㠃✚ ᐃ", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶
17 - 20 ᪥⏣୰⪷⮧, ࡯࠿ 67 ྡ "Ca, Ni ྠ఩యࡢⲴ㟁ኚ໬᩿㠃✚ ᐃ", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶ 17 - 20 ᪥ඵᮌ⩧୍, ࡯࠿ 25 ྡ "୰㛫࢚ࢿࣝࢠ࣮㡿ᇦ࡟࠾ࡅࡿ 10Be ࡢ ཯ᛂ᩿㠃✚࡜᰾ᵓ㐀", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3
᭶ 17 - 20 ᪥⏣୰ᝆኴ㑻, ࡯࠿ 67 ྡ "Ca ྠ఩యࡢ┦஫స⏝᩿㠃✚࡜᰾ᵓ㐀", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶ 17 - 20 ᪥2017 ᖺ 3 ᭶
኱すᗣ௓, ࡯࠿ 33 ྡ "୰㛫࢚ࢿࣝࢠ࣮㡿ᇦ࡟࠾ࡅࡿ 12N ࡢ 1 㝧Ꮚ๤㞳᩿㠃✚", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ17 - 20 ᪥すሯ㈼἞, ࡯࠿ 49 ྡ "㝧Ꮚ㐣๫ഃ C ྠ఩యࡢ㝧Ꮚࠊ୰ᛶᏊᐦᗘศᕸ", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶ 17 - 20 ᪥ᰗཎ㝣ᩯ, ࡯࠿ 67 ྡ "Ni 㡿ᇦ୰ᛶᏊ㐣๫᰾࡟࠾ࡅࡿ᰾Ꮚ๤㞳཯ᛂࡢ⣔⤫ⓗ◊✲", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3
᭶ 17 - 20 ᪥ᐑ⏣ᜨ⌮, ࡯࠿ 43 ྡ "ࢳ࢙ࣞࣥࢥࣇᨺᑕࢆ฼⏝ࡋࡓ୙Ᏻᐃ᰾ࣅ࣮࣒᫬㛫ศゎ⬟᳨ฟჾࡢ◊✲ III", ᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017 ᖺ 3 ᭶ 17 - 20 ᪥⏫⏣⪷ᐶ ࡯࠿ 31 ྡ "㔜࢖࢜ࣥ⏝ Ring-Imaging Cherenkov Counter ࡢ㛤Ⓨ࡜ᛶ⬟ホ౯"㸪᪥ᮏ≀⌮Ꮫ఍ 2017 ᖺᖺḟ኱఍ ኱㜰኱Ꮫ 2017
ᖺ 3 ᭶ 17 - 20 ᪥
J. Goto, T. Takahashi, R. Endo, Y. Amaya, Y. Shobugawa, H. Yoshida, and M. Naito, “⮬ື㌴㉮⾜ࢧ࣮࣋࢖ࢩࢫࢸ࣒ ASURA ࢆ⏝࠸ࡓ㐨㊰ୖࡢᨺᑕᛶࢭࢩ࣒࢘ỿ╔㔞ㄪᰝ”, ᪥ᮏཎᏊຊᏛ఍ 2017 ᖺ᫓ࡢᖺ఍, ᮾᾏ኱Ꮫ•༡࢟ࣕࣥࣃࢫ, 3 ᭶ (2017).
J. Goto, T. Takahashi, R. Endo, Y. Amaya, Y. Shobugawa, H. Yoshida, and M. Naito, “ASURA ࢆ⏝࠸ࡓᨺᑕᛶࢭࢩ࣒࢘ỿ╔㔞ㄪᰝ”, ➨ 4 ᅇ
ࠕཎⓎ஦ᨾ⿕⅏ᆅᇦ࡟࠾ࡅࡿᨺᑕ⥺㔞࣐ࢵࣆࣥࢢࢩࢫࢸ࣒ࡢᢏ⾡㛤Ⓨ࣭㐠⏝࡜ࢹ࣮ࢱゎᯒ࡟㛵ࡍࡿ◊✲఍ࠖ, ி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤ, 1 ᭶(2017).
R. Endo, T. Takahashi, T. Kanbayashi, J. Goto, and M. Naito, “⮬ື㌴㉮⾜ࢧ࣮࣋࢖ࢩࢫࢸ࣒ ASURA ࡟ࡼࡿ࣍ࢵࢺࢫ࣏ࢵࢺࡢ఩⨨᥎ᐃ”, ➨4 ᅇࠕཎⓎ஦ᨾ⿕⅏ᆅᇦ࡟࠾ࡅࡿᨺᑕ⥺㔞࣐ࢵࣆࣥࢢࢩࢫࢸ࣒ࡢᢏ⾡㛤Ⓨ࣭㐠⏝࡜ࢹ࣮ࢱゎᯒ࡟㛵ࡍࡿ◊✲఍ࠖ, ி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤ,
1 ᭶ (2017).
K. Shirai, Y. Oshimi, S. Goto, K. Ooe and H. Kudo, “Rf ྠ᪘ඖ⣲ Zr, Hf ࡢሷ໬≀࡟ᑐࡍࡿ➼ ࢞ࢫࢡ࣐ࣟࢺࢢࣛࣇ࢕”, ➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲኱Ꮫ஬༑ᔒ࢟ࣕࣥࣃࢫ, 9 ᭶ (2016).
S. Goto, ͆᪂₲኱࡟࠾ࡅࡿ Zr,Hf ࠾ࡼࡧ Rf ሷ໬≀ࡢẼ┦໬Ꮫ◊✲࠾ࡼࡧ௒ᚋࡢィ⏬͇, 2016ࠕ㉸㔜ඖ⣲ࡢ⛉Ꮫࠖ◊✲఍, ᪂₲኱Ꮫ㥐༡࢟ࣕࣥࣃࢫ ࠕ࡜ࡁࡵ࠸࡜ࠖ, 9 ᭶ (2016).
K. Ooe, ͆ᅛᾮࠊᾮᾮᢳฟἲ࡟ࡼࡿ Db ࡢࣇࢵ໬≀㘒ᙧᡂ࡜ Rf ࡢ࣮࢟ࣞࢺ㘒ᙧᡂࡢ◊✲͇, 2016ࠕ㉸㔜ඖ⣲ࡢ⛉Ꮫࠖ◊✲఍, ᪂₲኱Ꮫ㥐༡࢟ࣕࣥࣃࢫ ࠕ࡜ࡁࡵ࠸࡜ࠖ, 9 ᭶ (2016).
D. Sato, ͆105 ␒ඖ⣲ Db ࡢ aliquat 336 ᶞ⬡ࢆ⏝࠸ࡓࣇࢵ໬Ỉ⣲㓟࠿ࡽࡢᢳฟ͇, 2017 ㉸㔜ඖ⣲ࡢ⛉Ꮫ◊✲఍, ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓඛ➃ᇶ♏◊✲ࢭࣥࢱ࣮, 3 ᭶ (2017).
Posters Presentations[International Conference etc.]
Y. Kobayashi, M. Matsuo㸪͆Effects of pairing correlation on p-wave resonance and s-wave scattering in neutron-rich nuclei͇, RIBF Users
Meeting 2016, RIKEN Nishina Center, September 8, 2016.
Y. Kobayashi, M. Matsuo,”Pairing correlation effects on width of quasiparticle resonance in neutron dripline nuclei”, NIC-XIV School, Niigata
University, June 15, 2016.
T. Inakura, M. Matsuo, “Systematic calculation of collective excitation of inner crust using density functional theory”, International symposium
on Neutron Star Matter, Tohoku University, Sendai, Miyagi, November 21-24, 2016.
K. Nishizuka, M. Takechi, T. Ohtsubo et al., 䇾Measurement of reaction cross sections for 9-12C isotopes”, ZAKOPANE Conference on
Nuclear Physics, Zakopane, Poland 28, August - 4, September, 2016.
A. Homma, M. Takechi, T. Ohtsubo et al., 䇾Measurements of reaction cross sections for 19-27F isotopes”, Nuclei in the Cosmos XIV, Niigata,Japan 22-28, May, 2016.
K. Nishizuka, M. Takechi, T. Ohtsubo et al., 䇾Measurement of Reaction Cross Sections for 9-12C Isotopes”, Nuclei in the Cosmos XIV,
Niigata, Japan 22-28, May, 2016.
[Domestic Conference]
R. Yamada, K. Ooe, S. Goto and H. Kudo, H. Haba, Y. Komori, “ࣇ࣮ࣟ࢖ࣥࢪ࢙ࢡࢩࣙࣥศᯒἲࢆ฼⏝ࡋࡓ 4 ᪘ඖ⣲ ZrࠊHf ࡢ࣮࢟ࣞࢺᢳ
ฟ”, ➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲኱Ꮫ஬༑ᔒ࢟ࣕࣥࣃࢫ, 9 ᭶ (2016).
K. Ooe, R. Yamada, S. Goto and H. Kudo, H. Haba, Y. Komori, “Rf ࡢྠ᪘ඖ⣲ ZrࠊHf ࡢ 4-࢖ࢯࣉࣟࣆࣝࢺ࣏ࣟࣟࣥࢆ⏝࠸ࡓ⁐፹ᢳฟᣲື”,
➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲኱Ꮫ஬༑ᔒ࢟ࣕࣥࣃࢫ, 9 ᭶ (2016).
D. Sato, M. Murakami, K. Ooe, R. Motoyama, H. Haba, Y. Komori, A. Toyoshima, A. Mitsukai, H. Kikunaga, S. Goto and H. Kudo, “5 ᪘ඖ⣲
Nb, Ta ࡢࣇࢵ໬Ỉ⣲㓟࠿ࡽࡢ Aliquat 336 ᶞ⬡࡬ࡢᢳฟ㸸ศ㓄ಀᩘࡢᢳฟ๣⃰ᗘ౫Ꮡᛶࡢ᳨ウ”, ➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲኱Ꮫ஬༑ᔒ࢟ࣕࣥࣃࢫ, 9 ᭶ (2016).
R. Motoyama, K. Ooe, M. Murakami, H. Haba, S. Goto and H. Kudo, “5 ᪘ඖ⣲ Nb, Ta ࡢሷ㓟⁐ᾮ࠿ࡽࡢࢺࣜ࢖ࢯ࢜ࢡࢳࣝ࢔࣑ࣥ࡟ࡼࡿ⁐፹ᢳฟ̿Ta ࢺ࣮ࣞࢧ࣮ㄪ〇ἲࡢᙳ㡪̿”, ➨ 60 ᅇᨺᑕ໬Ꮫウㄽ఍, ᪂₲኱Ꮫ஬༑ᔒ࢟ࣕࣥࣃࢫ, 9 ᭶ (2016).

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Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Partner Institution
Wako Nuclear Science Center, IPNS (Institute for Particle and Nuclear Studies)
KEK (High Energy Accelerator Research Organization)
1. Abstract
The KEK Isotope Separation System (KISS) has been constructed to experimentally study the E-decay properties of unknown
neutron-rich nuclei near neutron magic number N = 126, which are of astrophysical interest. A new rotating target system was introduced
and higher yields and more stable operational conditions were achieved. Resonance ionization spectroscopy for the hyperfine structure of
199Pt was performed at KISS. An international collaboration with IBS (Institute of Basic Science), Korea, has been organized. As part ofthis collaboration, an array of super-clover germanium detectors was installed. A new project for comprehensive mass measurements with
MRTOF mass spectrograph at KISS and other devices has started in collaboration with the RIKEN SLOWRI team.

2. Major Research Subjects(1) Radioactive isotope beam production and manipulation for nuclear experiments.
(2) Explosive nucleosyhnthesis (r- and rp-process).
(3) Heavy ion reaction mechanism for producing heavy neutron-rich nuclei.
(4) Development of MRTOF mass spectrograph for short-lived heavy nuclei.
(5) Development of RNB probes for materials science applications.
3. Summary of Research Activity
KISS is an element-selective isotope separator, combining use of a magnetic mass separator with in-gas-cell resonant laser ionization.
The gas cell, filled with argon gas of 75 kPa, a central component of KISS, from which only the element of interest are extracted as an
ion beam for subsequent mass separation. In the cell, nuclei primarily produced by low-energy heavy-ion reactions are stopped(thermalization and neutralization), transported by buffer gas (gas-flow of ~75 kPa argon in the present case), and then re-ionized by laser
irradiation just before the exit. The gas cell was fabricated to efficiently collect the reaction products produced by multi-nucleon transfer (MNT)
reactions in the 136Xe +198Pt system. For the first extraction of the reaction products, the 136Xe beam energy and 198Pt target thickness were set at
10.8 MeV/u and 6 mg/cm2, respectively. In FY2014, the half-life of 199Pt was measured with E-ray telescopes and a tape transport system locatedat the focal point of KISS. The E-ray telescopes were composed of three double-layered thin plastic scintillators; thickness of the first and second
layers was 0.5 mm and 1 mm, respectively. In order to reduce the background, low-activity lead blocks and a veto counter system consisting ofplastic scintillator bars surrounded the telescopes. The background rate of these E-ray telescopes was measured to be 0.7 counts per second. For
further reduction of the background rate, as low as 0.1 counts per hour, a gas counter based beta-ray telescope system was installed in FY2016.
An array of germanium detectors consisting of four super-clover germanium crystals was also brought into operation in FY2016.
For higher primary beam intensities and higher extraction efficiency, a doughnut-shaped gas cell with a rotating target wheel setup has beendeveloped for KISS. Using this setup, resonance ionization spectroscopy of the ground state hyperfine structure of Pt and Ir were performed.
The nuclear g-factor and charge radius of the ground state and an isomeric state of 199Pt were deduced from the experimental results.
Cross-section measurements were performed at GANIL in 2012 to investigate the feasibility of using MNT in the reaction system of
136Xe on 198Pt to produce heavy neutron-rich isotopes around mass number of 200 with the neutron magic number of 126; the analysisof the data has been completed. The cross sections of target-like fragments around N =126 were comparable to those estimated using the
GRAZING code, and they appear to be mainly contributed by the reactions with low total energy loss with weak N/Z equilibration and particle
evaporation. This suggests use of the MNT reactions with a heavy projectile at energies above the Coulomb barrier could be a promising meansfor production of neutron-rich isotopes around N = 126.
The multi-reflection time-of-flight mass spectrograph (MRTOF-MS) has been developed for direct mass measurements of short-lived heavy
nuclei at KISS and other facilities. In FY2016, mass measurements of more than 80 nuclides, including short-lived (T1/2 =10 ms) isotopes of Ra
and several isotopes of the trans-uranium elements Es and Md were performed at GARIS-II in collaboration with the SLOWRI team and theSuper Heavy Element Synthesis team of RIKEN. The highest precisions, achieved for Ga isotopes, reached a level of 0.03 ppm. For most of thewell-known nuclides, agreement with the literature mass values was found. However, discrepancies were found in some literature values derived
from pre-1980 indirect measurements. This suggests that such indirect measurements must be revised with comprehensive direct massmeasurements. The masses of four isotopes of Es and Md were measured for the first time, allowing for confirmation of the N = 152 shell closurein Md. Using these new mass data as anchor-points, the masses of seven isotopes of super-heavy elements up to Mt were indirectly determined
and comparisons with various nuclear mass models were performed.
The diffusion coefficient of lithium in solid materials used in secondary Li-ion batteries is one of the key parameters that determine how fasta battery can be charged. The reported Li diffusion coefficients in solid battery materials scatter over several order of magnitude. An in-situ
nanoscale diffusion measurement method, using D-emitting radioactive 8Li as a tracer, has been developed. In this method, while implanting
a pulsed 8 keV beam of 8Li, the D-particles emitted at small angles (ș = 10 ± 1ƕ) relative to the sample surface were detected as a functionof time. The Li diffusion coefficient could then be determined from the time dependent yields of the D-particles, whose energy loss can beconverted to nanometer-scale position information of diffused 8Li. The method has been successfully applied to measure the lithium
diffusion coefficients for an amorphous Li4SiO4 - Li3VO4 (LVSO) which was used as a solid electrolyte in a solid-state Li thin film battery,well-demonstrating that the present method has a sensitivity to the diffusion coefficients down to the level of 10-12 cm2/s, corresponding
with nanoscale Li diffusion. In FY2016, this method was used to determine Li diffusion coefficients in a spinel type Li compound of LiMn2O4(LMO), which is used as the anode of a Li battery in an electric vehicle. A significant change in the time dependent yields of the D particles was- 455 -

RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIES

observed at the sample temperature of around 623 K and the measurements will be continued in order to obtain the temperature dependence of
Li diffusion coefficients in LMO.

Members
Group Leader
Hiroari MIYATAKE
Researchers
Michiharu WADA
Yutaka WATANABE
Technical Staff
Yutaka KAKIGUCHI

Michihiro OYAIZU

Visiting Researchers
Jun-young Moon (IBS)

Jin-hyung Park (IBS)

Yoshikazu HIRAYAMAPeter SCHURY

Student Trainees
Momo MUKAI (PhD. Student, Tsukuba Univ.)
Sota KIMURA (PhD. Student, Tsukuba Univ.)

Murad AHMED MD (PhD. Student, Tsukuba Univ.)

Assistant
Machiko IZAWA

List of Publications & Presentations
Publications[Journal](Original Papers) *Subject to Peer Review
H. Kawamura, T. Akiyama, M. Hata, Y. Hirayama, M. Ikeda, Y. Ikeda, T. Ishii, D. Kameda, S. Mitsuoka, H. Miyatake, D. Nagae, Y. Nakaya,
K. Ninomiya, M. Niita, N. Ogawa, J. Onishi, E. Seitaibashi, S. Tanaka, R. Tanuma, Y. Totsuka, T. Toyoda, Y.X. Watanabe, J. Murata, « A
new measurement of electron transverse polarization in polarized nuclear beta-decay », Modern Physics Letter A 32, 1750058 (2017).*
E. Strano, D. Torresi, M. Mazzocco, N. Keeley, A. Boiano, C. Boiano, P. Di Meo, A. Guglielmetti, M. La Commara, P. Molini C. Manea, C.
Parascandolo, D. Pierroutsakou, C. Signorini, F. Soramel, D. Filipescu, A. Gheorghe, T. Glodariu, J. Grebosz, S. Jeong, Y.H. Kim, J.A.
Lay, H. Miyatake, M. Nicoletto, A. Pakou, K. Rusek, O. Sgouros, V. Soukeras, L. Stroe, N. Toniolo, A. Vitturi, Y. Watanabe, K. Zerva,« Discrimination of processes and optical model analysis in the 17O+58Ni collision around the coulomb barrier”, Acta Physics Polon. B48(2017) 615 *.
S.K. Das, T. Fukuda, Y. Mizoi, H. Ishiyama, H. Miyatake, Y.X. Watanabe, Y. Hirayama, S.C. Jeong, H. Ikezoe, M. Matsuda, K. Nishio, T.
Hashimoto, « New measurement of the 8Li(Ș,n)11B reaction in a lower-energy region below the Coulomb barrier”, Physical Review C 95,
055805 (2017) *P. Schury, M. Wada, Y. Ito, D. Kaji, F. Arai, M. MacCormick, I. Murray, H. Haba, S. Jeong, S. Kimura, H. Koura, H. Miyatake, K. Morimoto,K. Morita, A. Ozawa, M. Rosenbusch, M. Reponen, P.-A. Söderström, A. Takamine, T. Tanaka, H. Wollnik, “First online multireflection
time-of-flight mass measurements of isomer chains produced by fusion-evaporation reactions: Toward identification of superheavy
elements via mass spectroscopy”, Physical Review C 95, 011305(R) (2017) *E. Strano, D. Torresi, M. Mazzocco, N. Keeley, A. Boiano, C. Boiano, P. Di Meo, A. Guglielmetti, M. La Commara, P. Molini, C. Manea, C.
Parascandolo, D. Pierroutsakou, C. Signorini, F. Soramel, D. Filipescu, A. Gheorghe, T. Glodariu, J. Grebosz, S. Jeong, Y. H. Kim, J. A.
Lay, H. Miyatake, M. Nicoletto, A. Pakou, K. Rusek, O. Sgouros, V. Soukeras, L. Stroe, N. Toniolo, A. Vitturi, Y. Watanabe, K. Zerva,« 17O+58Ni scattering and reaction dynamics around the Coulomb barrier», Physical Review C 94, 024622 (2016) *T. Sonoda, T.Tsubota, M. Wada, I. Katayama, T.M. Kojima, M. Reponen, « A gas circulation and purification system for gas-cell-based lowenergy RI-beam production », Review of Scientific Instruments, 87 (2016) 065104. *A Hamaker, M. Brodeur, J.M. Kelly, J. Long, C. Nicoloff, S. Syan, B.E. Schult, P. Schury, M. Wada, «Experimental investigation of therepelling force from RF carpets », International Journal Mass Spectrometry, 404 (2016) 14-19. *[Proceedings](Original Papers) *Subject to Peer Review
Torresi, E. Strano, M. Mazzocco, A. Boiano, C. Boiano, P. Di Meo, M. La Commara, C. Manea, M. Nicoletto, J. Grebosz, A. Guglielmetti, P.
Molini, C. Parascandolo, D. Pierroutsakou, C. Signorini, F. Soramel, N. Toniolo, D. Filipescu, A. Gheorghe, T. Glodariu, S. Jeong, Y.H.
Kim, J.A. Lay, H. Miyatake, A. Pakou, O. Sgouros, V. Soukeras, L. Stroe, A. Vitturi, Y. Watanabe, K. Zerva,«Elastic scattering of
17O+208Pb at energies near the Coulomb barrier »,EPJ Web of Conferences 117, 08027 (2016) *P.Schury, M. Wada, Y.Ito, F. Arai, D. Kaji, S. Kimura, K. Morimoto, H. Haba, S. Jeong, H. Miyatake, H. Koura, K. Morita, M. Reponen, A.
Ozawa, T. Sonoda, A. Takamine, H. Wollnik, «Status of the low-energy super-heavy element facility at RIKEN », Nucl. Inst. Meth. B376
(2016) 52-56 *Y. Hirayama, Y.X. Watanabe, N. Imai, H. Ishiyama, S.C. Jeong, H.S. Jung, H. Miyatake, M. Oyaizu, S. Kimura, M. Mukai, Y.H. Kim, T.
Sonoda, M. Wada, M. Huyse, Yu. Kudryavtsev,P. van Duppen, « On-line experimental results of an argon gas cell-based laser ion source(KEK Isotope Separation System) », Nucl. Inst. Meth. B376 (2016) 52-56.*- 456 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

M. Mukai, Y. Hirayama, H. Ishiyama, H.S. Jung, H. Miyatake, M. Oyaizu, Y.X. Watanabe, S. Kimura, A. Ozawa, S.C. Jeong, T. Sonoda,« Search for efficient laser resonance ionization schemes of tantalum using a newly developed time-of-flight mass spectrometer in KISS »,Nucl. Inst. Meth B376 (2016) 73-76.*
S. Kimura, H. Ishiyama, H. Miyatake, Y. Hirayama, Y.X. Watanabe, H.S. Jung, M. Oyaizu, M. Mukai, S.C. Jeong, A. Ozawa, « Developmentof the detector system for image-decay spectroscopy at the KEK Isotope Sepaator System », Nucl. Inst. Meth. B376 (2016) 338-340.*
H. Ishiyama, S.C. Jeong, Y.X. Watanabe, Y. Hirayama, N. Imai, H.S. Jung, H. Miyatake, M. Oyaizu, A. Osa, Y. Otokawa, M. Matsuda, K.
Nishio, H. Makii, T.K. Sato, N. Kuwata, J. Kawamura, H. Ueno, Y.H. Kim, S. Kimura, M. Mukai, « Direct measurement of nanoscale lithium
diffusion in solid battery materials using radioactive tracer of 8Li », Nucl. Instrum. Meth. B 376 (2016) 379-381. *Y. Hirayama, Y. X. Watanabe, H. Miyatake, P. Schury, M. Wada, M. Oyaizu, Y. Kakiguchi, M. Mukai, S. Kimura, M. Ahmed, S. C. Jeong, J.
Y. Moon, J. H. Park, “Nuclear spectroscopy of r-process nuclei around N = 126 using KISS”, NUOVO CIMENTO, 39 C (2016) 359 *M. Mazzocco, A. Boiano, C. Boiano, M. La Commara, C. Manea, C. Parascandolo, D. Pierroutsakou, C. Signorini, E. Strano, D. Torresi, H.
Yamaguchi, D. Kahl, L. Acosta, P. Di Meo, J.P. Fernandez-Garcia, T. Glodariu, J. Grebosz, A. Guglielmetti, N. Imai, Y. Hirayama, H.
Ishiyama, N. Iwasa, S.C. Jeong, H.M. Jia, N. Keeley, Y.H. Kim, S. Kimura, S. Kubono, J.A. Lay, C.J Lin, G. Marquinez-Duran, I. Martel, H.
Miyatake, M. Mukai, T. Nakao, M. Nicoletto, A. Pakou, K. Rusek, Y. Sakaguchi, A.M. Sánchez-Benítez, T. Sava, O. Sgouros, C, Stefanini,
F. Soramel, V. Soukeras, E. Stiliaris, L. Stroe, T. Teranishi, N. Toniolo, Y. Wakabayashi, Y.X. Watanabe, L. Yang, Y.Y. Yang, “7Be- and
8B-reaction dynamics at Coulomb barrier energies”, EPJ Web of Conferences, 117, 06006 (2016) *Y. Hirayama, H. Miyatake, Y.X. Watanabe, N. Imai, H. Ishiyama, S.C. Jeong, H.S. Jung, M. Oyaizu, M. Mukai, S. Kimura, T. Sonoda, M.
Wada, Y.H. Kim, M. Huyse, Yu Kudryavtsev, P. van Duppen, “Beta-decay spectroscopy of r-process nuclei around N=126”, EPJ Web Conf.
109 08001, 1-6 (2016)
Oral Presentations[International Conference etc.]
P. Schury, « Technical Issues in Achieving Long-Term Stability of MRTOF”, RISP Workshop on MRTOF, Nov. 18, 2016, Daejeon, Korea.
P. Schury, « Mass measurements with MRTOF”, RNC-RIPS Meeting, Nov. 17-19, 2016, Daejon, Korea.
Y.X. Watanabe, « Production of N=126 nuclei and beyond using deep inelastic transfer products at KISS », the 6th international conference
on Fission and Properties of Neutron-rich Nuclei, Nov. 6-12, 2016, Florida, USA.
Y. Hirayama, « Recent spectroscopic activities using multi-nucleaon transfer reaction products at KISS », LA3NET Laser Ion Source
Workshop, Oct. 24-25, 2016, Paris, France.
P. Schury, « Nuclear Physics with Slow and Stopped Beam at RIBF », KPS meeting, Oct. 19-21, 2016, Gwangju, Korea.
P. Schury, « Gas Catcher Systems Status: SLOWRI/PALIS, SlowSHE, and KISS”, Fragment Separator Expert Meeting, Aug. 30 – Sept. 2,
2016, Grand Rapids, Michigan, USA.
P. Schury, “Mass Measurements of r-process Nuclei at KISS and SLOWRI”, The 14th International Symposium on Nuclei in the Cosmos(NIC), June 19-24, 2016, Niigata, Japan.
Y.X. Watanabe, “Production of radioactive nuclei relevant to r-process by multinucleon transfer reaction for KISS”, The 14th International
Symposium on Nuclei in the Cosmos (NIC), June 19-24, 2016, Niigata, Japan.
H. Soon, “Beta-decay half-lives of neutron rich nuclei and its impact on production of r-process elements”, The 14th International Symposium
on Nuclei in the Cosmos (NIC), June 19-24, 2016, Niigata, Japan.
Y. Hirayama, “Spectroscopy of multi-nucleon transfer reaction products using KISS”, Stopping and Manipulation of Ions and related topics(SMI-2016), June 8-10, 2016, IMP, Lanzhou, China.
[Domestic Conference]
M. Wada, « Possibility of comprehensive mass measurements of heavy elements », Symposium on Perspective of super heavy element
science, Mar. 17-20, Osaka, Japan.
Y.X. Watanabe, « Production of radioactive nuclei relevant to r-process by multinucleon transfer reactions for KISS », SSRI Workshop, Mar.
5-6, JAEA, Tokai, Japan.
Y. Hirayama, « Present status of KISS », SSRI Workshop, Mar. 5-6, JAEA, Tokai, Japan.
M. Mukai, « Development of low-background gas-counter for the beta spectroscopy at KISS », SSRI Workshop, Mar. 5-6, 2016, JAEA, Tokai,
Japan.
P. Schury, « Observation of doubly-charged ions of Pb through Pu extracted from cryogenic gas cell and mass anayzed by MRTOF-MS »,SSRI Workshop, Mar. 5-6 ,2016, JAEA, Tokai, Japan.
S. Kimura, « Precision mass measurements of proton-ULFKQXFOHLLQ$§-80 region with the multireflection time-of-flight mass spectrometer »,SSRI Workshop, Mar. 5-6, 2016, JAEA, Tokai, Japan.
H. Miyatake, « KISS, SLOWRI ᪋タ࡛ࡢప࢚ࢿࣝࢠ࣮᰾ศග◊✲”, KUR ᑓ㛛◊✲఍, Dec. 20-21, 2016, ி኱ཎᏊ⅔ࠊி㒔
H. Miyatake, “Recent Progress of the KISS project at KEK-WNSC”, 40th ASRC Int. Workshop on Experimental and Theoretical Advances in
Fission and Heavy Nuclei, Dec. 12-13, 2016, JAEA ᮾᾏ, Japan.,
M. Wada, “High precision nuclear spectroscopy with trapped radioactive ions”, The 2nd Cicily East Asia Workshop on Low-energy Nuclear
Physics”, June 26-28, RIKEN, Japan.
Y. Hirayama, “Nuclear spectroscopy of r-process nuclei around N=126 using KISS”, The 2nd Cicily East Asia Workshop on Low-energy Nuclear
Physics”, June 26-28, RIKEN, Japan.

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RIKEN Accel. Prog. Rep. 50 (2017)

Ⅵ. RNC ACTIVITIESEvents (April 2016 — March 2017)
RNC
Apr. 6–8

RBRC Scientific Review Committee (SRC)

Apr. 23

Wako Open campus

May 30–31

The 5th International Advisory Committee for the RIKEN-RAL Muon Facility (RAL-IAC)

July 21–23

The 4th Nishina Center Advisory Council (NCAC)

June 3

The 22nd RBRC Management Steering Committee (MSC)

Aug. 1–12

Nishina School

Dec. 1–3

The 17th Program Advisory Committee for Nuclear Physics Experiments at RI Beam Factory (NP-PAC)

Dec. 5

Final Report of the former Associate Chief Scientist, Takashi Nakatsukasa

Dec. 14–16

The 10th RIKEN Advisory Council (RAC)

Jan. 13

The 6th Industrial Program Advisory Committee (In-PAC)

Jan. 19–20

The 13th Program Advisory Committee for Materials and Life Science Researches at RIKEN Nishina Center (ML-PAC)

Jan. 30

Research Review of the Chief Scientist, Tetsuo Hatsuda

CNSJul. 25
Aug. 24–30

ᆏ஭ගኵඛ⏕㏣᝚ㅮ₇఍
http://indico.cns.s.u-tokyo.ac.jp/conferenceDisplay.py?confId=302
The 15th CNS International Summer School(CNSSS16)
http://indico.cns.s.u-tokyo.ac.jp/conferenceDisplay.py?confId=288

Niigata Univ.
not held in FY2016

KEK
Aug, 18–26
Sept, 2–3
Sept. 4

KEK Summer Challenge 2016
http://www2.kek.jp/ksc/10th_2016/index.html
SSRI-pns Collaboration Meeting 2016
http://research.kek.jp/group/wnsc/ssri-pns-jp/
KEK Open Campus 2016
https://www2.kek.jp/openhouse/- 458 -

Ⅵ. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 50 (2017)

Press Releases (April 2016 - March 2017)
RNC
Sep. 27

Tomoko Abe and Tokihiro Ikeda; Ion Beam
Stable transmission of slow highly charged ions through tapered glass capillary with active
Breeding Team, Takao Kojima; SLOWRI
discharging method for sub-micron sized beams
team
Naruhiko Sakamoto, Kazunari Yamada,
Yutaka Watanabe, Kenji Suda, Kazutaka
Ozeki; High Gradient Cavity R&D Team,
Osamu Kamigaito; High-Intensity
Accelerator R&D Group

Sep. 30First Vertical Test of Superconducting QWR Prototype at RIKEN

Dec. 14

Fate of the Tetraquark Candidate Zc(3900) from Lattice QCD

Feb. 13

Spallation reaction study for the long-lived fission product107

Feb.17

Jin Wu, Shunji Nishimura, Hiroyoshi
94ௗǂ-Decay Half-Lives of Neutron-Rich 55Cs to 67Ho: Experimental Feedback and Evaluation
Sakurai; Radioactive Isotope Physics
of the r-Process Rare-Earth Peak Formation
Laboratory

Feb. 21

Yoichi Ikeda, Takumi Doi, Tetsuo Hatsuda;
Quantum Hadron Physics Laboratory

Pd

He Wang; Radioactive Isotope Physics
Laboratory, Hiroyoshi Sakurai; Nuclear
Transmutation Data Research Group,
Hideaki Otsu; Fast RI Data Team

Pieter Doornenbal, Hiroyoshi Sakurai;Radioactive Isotope Physics Laboratory,
Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy ofAlexandre Obertelli, Tomohiro Uesaka;110
ZrSpin Isospin Laboratory
Daiya Kaji, Kouji Morimoto; Superheavy
Element Device Development Team,
Kosuke Morita; Research Group for
Superheavy Element, Hiromitsu Haba; RI
Applications Team

Mar. 1

Study of the Reaction 48Ca + 248Cm Ѝ 296Lv at RIKEN-GARIS

Mar. 6

Overview of the chemical composition and characteristics of Na+ and Cl– distributions inshallow samples from Antarctic ice core DF01 (Dome Fuji) drilled in 2001

Kazuya Takahashi, Yuko Motizuki, Yoichi
Nakai; Astro-Glaciology Research Unit

Quantum phase transition in the shape of nuclei and simulations using K computer

T. Otsuka, T. Togashi, Y. Tsunoda, N.
Shimizu

CNS
Oct. 18- 459 -