CONTENTS

RIKEN Accel. Prog. Rep. 48 (2015)

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PREFACEEURICA! ~ Secrets Revealed via Decay Spectroscopy of Exotic Nuclei ~Ⅰ. HIGHLIGHTS OF THE YEAR
1p3/2 Proton-Hole State in 132Sn and Shell Structure Along N=82
J. Taprogge et al.

1

Isomer decay spectroscopy of 164Sm and 166Gd: mid-shell collectivity around N=100
Z. Patel et al.

2β-Decay half-lives of 76,77Co, 79,80Ni and 81Cu: experimental indication of doubly magic 78Ni
Z. Y. Xu et al.

3

Intermediate-energy Coulomb excitation of 104Sn: Moderate E2 strength decrease approaching 100Sn
P. Doorenbal et al.

4First campaign of the SEASTAR project
P. Doornenbal et al.

5

Fragmentation of 137Cs and 90Sr on proton and deuterium
H. Wang et al.

6

Missing-mass spectroscopy of tetra-neutron system via exothermic double-charge exchange reaction 4He(8He,8Be)4n
K. Kisamori et al.

7

Laser-RF double resonance spectroscopy of 84-87Rb isotopes trapped in superfluid helium
X.F. Yang et al.

8

RI beam production at BigRIPS in 2014
N. Fukuda et al.

9

Neutron drip-line search using 48Ca beam
N. Inabe et al.

11High-resolution hadronic-atom X-ray spectroscopy with superconducting transition-edge-sensor microcalorimeters
S. Okada et al.

12

Measurement of high-pT neutral mesons with a high-energy photon trigger in ALICE
S. Yano and K. Shigaki

13

Transverse single-spin asymmetries in prompt photon production from proton-proton collisions
D. Pitonyak et al.

14

Entanglement entropy of de Sitter space α-vacua
N. Iizuka, T. Noumi, N. Ogawa

15

Current Reflection and Transmission at Conformal Defects: Applying BCFT to Transport Process
T. Kimura and M. Murata

16

Magneticfield of the slowest rotating neutron star in the symbiotic X-ray binary 4U 1954+319
T. Enoto et al.

17

Short-term spectral softening of black-hole binary Swift J1753.5-0127
A. Yoshikawa et al.

18

Installation of return BT line from IRC
Y. Watanabe et al.

19

Supply of 48Ca beam from 18-GHz ECRIS using the micro-oven
K. Ozeki et al.

20

Particle identification for Sn region with SAMURAIJ. Yasuda et al.

21

Results of first online tests of small ion-surfing RF carpet gas cell at GARIS-Ⅱ
P. Schury et al.

22Electron scattering spectrometer for the SCRIT project
K. Tsukada et al.

23

Measurement of isochronism using α-source for the Rare RI Ring
Y. Abe et al.

24Time-stamping system for nuclear physics experiments at RIKEN RIBF
H. Baba et al.

25

First chemical synthesis and investigation of Sg(CO)6
J. Even et al.

26

RIKEN Accel. Prog. Rep. 48 (2015)

CONTENTS

Ⅱ. RESEARCH ACTIVITIES I (Nuclear, Particle and Astro-Physics)
1. Nuclear Physics
Long-lived isomer in 126Pd
H. Watanabe

27

Yrast 6+ Seniority Isomers of 136,138Sn
G. Simpson et al.

28

Gamma-Spectroscopy around 100Sn
J. Park and D. Lubos

29

Identification of a millisecond isomeric state 129Cd via the detection of internal conversion and Compton electrons
J. Taprogge et al.

30

Study of shape evolution in neutron-rich Cs isotopes using β-decay spectroscopy
A. Yagi et al.

31

Shell evolution in neutron-rich Te isotopes beyond doubly magic 132Sn
P. Lee et al.

32

Decay spectroscopy of neutron-rich Z ≈ 60 isotopes
E. Ideguchi et al.

33

Investigation of octupole correlations of neutron-rich Z ~ 56 isotopes through β-γ spectroscopy
R. Yokoyama et al.

34

Decay spectroscopy of neutron-rich rare-earth isotopes
P-A Söderström et al.

35

Rotational level structure of sodium isotopes inside the “Island of Inversion”
P. Doornenbal et al.

36

In-beam γ-ray spectroscopy of 50Ar
D. Steppenbeck et al.

37

Experimental study of isoscalar and isovector dipole resonances in neutron-rich oxygen isotopes
N. Nakatsuka et al.

38

Study of the pygmy-dipole resonances of 132Sn and 128Sn in inelastic α-scattering
J. Tscheuschner, T. Aumann et al.

39

Coulomb excitation of 130Cd
H. Wang, N. Aoi et al.

40

Search of E1 strength around threshold in 70Ni
R. Avigo, O. Wieland et al.

41

Structure at and beyond the dripline in the vicinity of the N=14 and 16 sub-shell closures
S. Leblond et al.

42

Study of neutron-unbound states of 19C at SAMURAIJ. Hwang et al.

44

Measurement of unbound states in 17C at SAMURAI
S. Kim et al.

45

Detailed analysis of tracking detectors for SAMURAI08 experiment
S. Koyama et al.

46

Fission Barrier Studies of Neutron-Rich Nuclei via the (p,2p) Reaction: Status of NP1306-SAMURAI-14 Experiment
D. Muecher, S. Reichert et al.

47

Identification of fission fragments from tracks measured by the FDC1
S. Reichert et al.

48

Analysis status of the experiment on fission associated with the (p,2p) reaction with 238U beam
M. Sako et al.

49

Study of Neutron-Proton Correlations & 3N Forces in 12C
H. N. Liu et al.

50

Measurement of the 132Sn(p, n) reaction at 270 MeV/nucleon
M. Sasano et al.

51

Experimental study on neutron-neutron correlation in Borromean nuclei via the (p, pn) reaction at intermediate energy with the SAMURAI
spectrometer
Y. Kubota et al.

52

Simulations for experimental studies of breakup reactions on neutron-deficient isotopes relevant to the astrophysical rp-process
V. Panin et al.

53

Future plan to study light nuclei near the neutron drip line via charge-exchange (p,n) reactions in inverse kinematics
L. Stuhl et al.

54

Spin-dipole response of 4He by using (8He, 8Li(1+))
H. Miya et al.

55

CONTENTS

RIKEN Accel. Prog. Rep. 48 (2015)

Spectroscopy of Single-Particle States in Oxygen Isotopes via AO( →p, 2p) Reaction with Polarized Protons
S. Kawase et al.

56

Status on residual analysis of SHARAQ04 experiment
T.L. Tang et al.

57

Parity-transfer reaction for study of spin-dipole 0− mode
M. Dozono et al.

58

Direct mass measurements of neutron-rich Ca isotopes beyond N = 34
M. Kobayashi et al.

59

Gamma-ray detector array for isomer tagging at SHARAQ
Y. Kiyokawa et al.

60

Quadrupole collectivity in island-of-inversion nuclei
S. Michimasa et al.

28,30

Ne and 34,36Mg

61

Study of nuclear structure in proton-rich carbon isotopes
T. Miyazaki et al.

62

Triton contamination in the 10C secondary beam produced by RIPS
T. Miyazaki et al.

63

β-NMR measurement of 41S
Y. Ichikawa, Y. Ohtomo et al.

64

β-NMR measurement in coincidence with β-delayed γ rays of 41S
Y. Ichikawa et al.

65

Interaction of 8B, unstable and loosely bound, with 208Pb: scattering and breakup
C. Signorini, M. Mazzocco et al.

66

First production of 10Be beam at CRIB and 10Be+α resonant elastic scattering
H. Yamaguchi et al.

67

Investigation of the waiting point 22Mg in the rp-process
N.N. Duy et al

68

Production of Lv isotope in the hot fusion reaction of 248Cm+48Ca at E*=38.4 MeV
D. Kaji et al.

69

Production of 215U and 216U and attempt to produce 219Np and 220Pu
Y. Wakabayashi et al.

70

Search for new isotopes in the region around Z = 33 using the in-flight fission of a 238U beam at 345 MeV/nucleon
Y. Shimizu et al.

71

Search for new neutron-rich isotopes with Z ~ 55-70 using a 345 MeV/nucleon 238U beam
N. Fukuda et al.

72

Study of particle identification and RI beam separation for the Z~80 region using projectile fragmentation of 238U
N. Inabe et al.

73

Production cross section measurements of radioactive isotopes produced from a 124Xe beam at 345 MeV/u by the BigRIPS separator
H. Suzuki et al.

74

Production cross section measurements for fragments of 70Zn beam
D.S. Ahn et al.

75

On-line test of rotating magnetic field system for β-NMR method
Y. Ishibashi et al.

76

Probing the critical behavior in the evolution of GDR width at very low temperatures in A ~ 100 mass region
B. Dey et al.

77

2. Nuclear Physics (Theory)
Hoyle band and αcondensation in 12C
Y. Funaki

79

Energy and mass-number dependence of hadron-nucleus total reaction cross sections
A. Kohama et al.

80

Systematic calculation of T = 1 triplets with proton–neutron mixed energy density functionals
K. Sato et al.

81

Correlated two-neutron emission in decay of unbound nucleus 26O
K. Hagino and H. Sagawa

82

Three-body model calculation of the 2+ state in 26O
K. Hagino and H. Sagawa

83

Proton-neutron pairing vibrations in 40Ca: Precursory soft mode of the isoscalar spin-triplet pairing condensation
K. Yoshida84

Study of low-frequency negative-parity vibrational excitations of superdeformed rotational band in 40Ca using cranked Skyrme-RPA
calculations
M. Yamagami and K. Matsuyanagi

85

RIKEN Accel. Prog. Rep. 48 (2015)

CONTENTS

Self-consistent Hartree-Fock and RPA Green's function method for monopole response of neutron-rich Ni isotopes
I. Hamamoto and H. Sagawa

86

Origin of fusion hindrance in heavy systems
K. Washiyama

87

Pairing effect in thermal shape fluctuation model on the width of giant dipole resonance
A.K. Rhine Kumar et al.

88

Shell-model study of Gamow-Teller transition from 100Sn
M. Honma et al.

89

Reentrance phenomenon of superfluid pairing in hot rotating nuclei
N. Quang Hung et al.

90

Giant dipole resonance in highly excited nuclei
N. Dinh Dang

91

Theoretical analysis of 132Xe by generator coordinate method
N. Yoshinaga et al.

92

Tops-on-top model applied to TSD bands in 164Lu
K. Sugawara-Tanabe et al.

93

Recent progress and open issues on pseudospin and spin symmetries
H. Z. Liang et al.

94

Nuclear moment of inertia in super-normal phase transition region
K. Tanabe et al.

95

Joint project for large-scale nuclear structure calculations in 2014
N. Shimizu et al.

96

3. Nuclear Data
Development of a new EXFOR editor system
A. Sarsembayeva et al.

97

Thick-target yields derived from inverse kinematics toward transmutation
S. Imai et al.

98Compilation of nuclear reaction data from the RIBF
D. Ichinkhorloo et al.

99

4. Hadron Physics
Performance improvement of PHENIX MUID
S. Han et al.

101

PHENIX Run13 Local Polarimetry
M. Kim et al.

102

Hadronic backgrounds pattern study for W ±→ μ ± analysis in PHENIX
C. Kim et al.

103

W → μ parity violating asymmetries from the 2013 running period in the PHENIX experiment
R. Seidl

104

Neutral pion double helicity asymmetry
K. Boyle

105

Preliminary results of A Lπ L measurement at √s = 510 GeV at mid-rapidity through a PHENIX experiment
I. Yoon106

Cross section and asymmetry measurement of very forward neutral particle production at RHIC
Y. Goto107

Fragmentation function measurements in BelleR. Seidl et al.

108

Measurement of direct photon azimuthal anisotropy in s NN =200GeV Au+Au collisions in RHIC-PHENIX experiment
S. Mizuno for the PHENIX

109

0Charged hadron ellipptic and triangular flow in Cu+Au at
H. Nakagomi et al.

s NN = 200GeV

110

Commissioning and operation of silicon vertex detector for PHENIX experiment in RHIC Run-14
M. Kurosawa

111

Alignment of the PHENIX Silicon Vertex Tracker (VTX) in the 2014 RUN
T. Moon et al.

112

Distance of closest approach analysis with VTX at RHIC-PHENIX
H. Asano et al.

113

Current status of bottom and charm measurements using VTX at RHIC-PHENIX
T. Hachiya et al.

114

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RIKEN Accel. Prog. Rep. 48 (2015)

Development of the FVTX high multiplicity trigger system for the PHENIX experiment
T. Nagashima et al.

115

Study of direct photon polarization to shed on strong magnetic field in heavy ion collisions at PHENIX
T. Hoshino

116

Measurement of dielectron production in
S. Hayashi et al.

117

s NN = 5.02 TeV p-Pb collisions by using the ALICE detector

Measurement of neutral pion v2 in Pb-Pb collisions at
T. Tsuji et al.

s NN = 2.76 TeV by the ALICE experiment118

s NN =5.02 TeV with the ALICE detector

119

Azimuthal distributions of jets with respect to high-pT neutral pion triggers in pp collisions at √s = 7 TeV and PbPb collisions at s NN
= 2.76 TeV from ALICE
D. Watanabe

120

Long-range correlation in p-Pb collisions at
Y. Sekiguchi et al.

Study of ion backflow with 2GEMs + MICROMEGAS for the ALICE-TPC upgrade
K. Terasaki et al.

121

Search for dark photons from neutral meson decays in p + p and d + Au collisions at
Y. Akiba and Y. Yamaguchi

122s NN = 200 GeV

Progress in probing flavor asymmetry of antiquarks in protons in the E906/SeaQuest experiment at Fermilab
K. Nagai et al.

123

Results of the K − pp bound-state search in J-PARC E151st
T. Hashimoto et al.

124

Measurement of the proton Zemach radius from the hyperfine splitting energy in ground-state muonic hydrogen
M. Sato et al.

125

5. Hadron Physics (Theory)
Strong enhancement of jet-medium coupling in the quark-gluon plasma near transition temperature
J. Liao

Magnetic moments of light nuclei from lattice QCD
S. Beane et al.

127
128

Nucleon structure in lattice QCD near physical mass
S. Ohta

129

Holographic heavy-quark symmetry
K. Hashimoto et al.

130

Possibility of ferromagnetic neutron matter
K. Hashimoto

131

Pion and Kaon form factors in the NJL model
Y. Ninomiya et al.

132

Chiral Magnetic and Vortical Effects at Weak Coupling
H.-U. Yee

133

Collinear parton splitting for early thermalization and chemical equilibration in heavy-ion collisions
A. Monnai and B. Mueller

134

Chemical equilibration of QCD medium for photon v2 puzzle
A. Monnai

135

Refraction of light in the quark-gluon plasma
A. Monnai

136

Transverse single-spin asymmetries in proton-proton collisions and the role of twist-3 fragmentation
D. Pitonyak et al.

137

Left-right spin asymmetries in lepton-nucleon collisions
D. Pitonyak et al.

138

Twist-3 double-spin asymmetries in lepton-nucleon collisions
D. Pitonyak et al.

139

Strong binding and shrinkage of single and double K̄ nuclear systems (K ¯pp, K ¯ppn, K ¯K ¯p and K ¯K ¯pp) predicted by
Faddeev-Yakubovsky calculations
T. Yamazaki et al.

140

New way to produce dense double-antikaonic dibaryon system, K ¯K ¯pp, through Λ(1405) - doorway sticking in p +p collisions
T. Yamazaki et al.

141

Theoretical analysis of Λ(1405) → (Σπ)0 mass spectra produced in p + p → p + Λ(1405) + K+ reactions
M. Hassanvand, S.Z. Kalantari

142

RIKEN Accel. Prog. Rep. 48 (2015)

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6. Particle Physics
h0 → cc̄ as a test case for quark flavor violation in the MSSM
A. Bartl et al.

143

Update on lattice QCD calculation of neutral B meson mixing in static limit of b quark
T. Ishikawa et al.

144

Progress toward an ab initio, Standard Model calculation of direct CP-violation in K-decays
C. Kelly

145

Collisional Energy Loss in Semi-Quark Gluon Plasma
S. Lin et al.

146

Entropic destruction of heavy quarkonium in non-Abelian plasma from the holographic correspondence
K. Hashimoto and D. Kharzeev

147

Magnetic instability in AdS/CFT : Schwinger effect and Euler-Heisenberg Lagrangian of Supersymmetric QCD
K. Hashimoto, T. Oka et al.

148

Turbulent meson condensation in quark deconfinement
K. Hashimoto et al.

149

Meson turbulence at quark deconfinement from AdS/CFT
K. Hashimoto et al.

150

Electromagnetic instability in holographic QCD
K. Hashimoto et al.

151

Electric Field Quench in AdS/CFT
K. Hashimoto et al.

152

Holographic entanglement and causal shadow in the time-dependent Janus black hole
Y. Nakaguchi, N. Ogawa, T. Ugajin

153

Radion stabilization in the presence of Wilson line phase
Y. Abe et al.

154

Is cosmological constant screened in Liouville gravity with matter?
T. Inami et al.

155

Effective Higgs interactions of composite dark matter
E. T. Neil

156

Effective field theory for spacetime symmetry breaking
Y. Hidaka, T. Noumi, G. Shiu

157

Dynamical breaking of shift-symmetry in supergravity-based inflation
A. Mazumdar, T. Noumi et al.

158

Non-Gaussianities of primordial perturbations and tensor sound speed
T. Noumi and M. Yamaguchi

159

Spin operator and entanglement in quantum field theory
K. Fujikawa et al.

160

Linearity of quantum probability measure and Hardy's model
K. Fujikawa et al.

161

SSD and the infinite circumference limit of CFT
T. Tada162

Towards U(N|M) knot invariant from ABJM theory
B. Eynard and T. Kimura

163

Duality and integrability of supermatrix model with external source
T. Kimura

164

Bulk angular momentum and Hall viscosity in chiral superconductors
A. Shitade and T. Kimura

165

7. Astrophysics and Astro-Glaciology
Insights from Antarctica on volcanic forcing during the Common Era
M. Sigl et al.

167

Variation in chemical composition induced by solar energetic particle events in the middle atmosphere
Y. Nakai et al.

168

Measurements of nitrogen isotope ratios in samples with very low nitrate concentrations from the Dome Fuji ice core (Antarctica) drilledin 2010
Y. Motizuki et al.

169

X-ray and Optical/UV Correlation Studies of Active Galactic Nuclei
H. Noda170

Time-variable Fe K emission lines from accreting white dwarf binaries
T. Yuasa

171

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RIKEN Accel. Prog. Rep. 48 (2015)

Spectral and Temporal Approach to Physics of Neutron Stars
T. Enoto, T. Tamagawa et al.

172

Timing analysis of solar flares in hard X-ray and soft γ-ray bands measured by the Suzaku Wide-band All-sky Monitor
W. Iwakiri et al.

173

Spurious shear from tree-rings on LSST CCD
Y. Okura et al.

174

Performance test of TPC Polarimeter for cosmic X-ray sources at BNL NSLS-1
W. Iwakiri et al.

175

Fabrication of a TPC X-ray Polarimeter and Preliminary Testing with the Synchrotron Radiation Light Source at Spring-8
A. Hayato et al.

176

Measurement of X-ray beam polarization of BL32B2 at SPring-8 using a Compton polarimeter
M. Kubota et al.

177

Performance test of Modulated X-ray Source using UV-LED and Channel Electron MultiplierW. Iwakiri et al.

178

Property of LCP-GEM in pure dimethyl ether at low pressures
Y. Takeuchi et al.

179

Measurement of the electron drift velocity in DME gas
M. Kubota et al.

180

Measures for Micro Meteoroids and Orbital Debris in Cooler Driver Harnesses of the Soft X-ray Spectrometer onboard ASTRO-H
H. Noda et al.

181

8. Accelerator
Emittance measurements for RIKEN 28 GHZ SC-ECRIS
Y. Higurashi et al.

183

Supply of 70Zn beam from 18-GHz ECRIS using the micro-oven
K. Ozeki et al.

184

Current status of the RIKEN 18-GHz superconducting ECR ion source
T. Nagatomo et al.

185

Acceleration test of 235U
K. Ozeki et al.

186

Modification of septum electrode for RRC-EDC
K. Yamada et al.

187

Construction of new amplifiers for RILAC
K. Suda et al.

188

Magnet system for a new beam transport line from IRC to E5 experimental room
K. Kumagai et al.

189

Improved-flatness beryllium disk stripper for uranium acceleration at RIKEN RIBF
H. Hasebe et al.

190

Thinning effect of gas strippers for high-intensity very heavy ion beams
H. Imao et al.

191

Control and monitoring system of gas strippers
R. Koyama and H. Imao

192

Beam Energy and Longitudinal Beam Profile Measurement System at the RIBF
T. Watanabe et al.

193

Maintenance and development of the RIBF control system
M. Komiyama et al.

194

Development of new operational log system for RIBF operation
A. Uchiyama et al.

195

Commissioning of the Laser Ion Source for RHIC EBIS
M. Okamura and T. Kanesue

196

NISHINA RIBF water-cooling system 2014
T. Maie et al.

197

Charge State Selective Ion Beam Acceleration Using the RFQ Linac
Y. Fuwa et al.

198

Investigation of the effect of solenoidal magnetic field on Fe plasma flux for application to laser ion source
S. Ikeda et al.

199

9. Instrumentation
Operational status of the superconducting SAMURAI magnet
H. Sato et al.

201

RIKEN Accel. Prog. Rep. 48 (2015)

CONTENTS

Preparation status of the (p, 2p) fission experiment with the SAMURAI spectrometer
S. Reichert and M. Sako et al.

202

Slow neutron detector WINDS for (p, n) reaction in inverse kinematics with SAMURAIJ. Yasuda et al.

203

Integration of GET system for SπRIT-TPC
T. Isobe et al.

204

Performance evaluation of GET readout electronics for heavy ion collision experiments at RIBF
G. Jhang, T. Isobe et al.

205

Status of SπRIT-TPC
M. Kurata-Nishimura et al.

206

Test of prototype crystals of the γ-ray detector CATANA
Y. Togano et al.

207

Isotope separation with new ion-optics mode
H. Takeda et al.

208

A NaI (Tl) detector array for measurements of γ rays from fast radioactive isotope beams
S. Takeuchi et al.

209

Development of a total-kinetic-energy counter for high-rate experiments at ZeroDegree spectrometer
R. Taniuchi et al.

210

Low-pressure MWDC system for ESPRI experimentY. Matsuda et al.

211

NiGIRI: Identification of n, p, d, t, 3,4He, 6,7Li, and γ-rays
H. Matsuzawa et al.

212

Proposal of novel delayed-neutron branching ratio measurements using MRTOF
M. Wada213

Advanced development of GARIS-Ⅱ using He-H2 mixture as a filled gas toward the study of superheavy element
D. Kaji et al.

214

Pulse shape analysis for short-lived decay of superheavy elements
S. Yamaki et al.

215

Performance of ion surfing rf-carpet for high-energy RI beam gas catcher
F. Arai et al.

216

Evaluation of effects of a large energy deposition on Deuterium gaseous active target for a high-intensity ion beam injection
C.S. Lee, S. Ota et al.

217

Design of a thin-film polarized proton target system for low-energy RI beam experiments
E. Milman et al.

218

Kinetic parameters of photo-excited triplet state of pentacene determined by dynamic nuclear polarization
K. Tateishi et al.

219

Development of single-crystal CVD diamond detector for time-of-flight measurements
Y. Sato et al.

220

Efficient excitation of photo-excited triplet electrons of pentacene for dynamic nuclear polarization
K. Tateishi et al.

221

Realization of 1H spin polarization of 40% at room temperature
K. Tateishi et al.

222

Production of spin polarization of atoms in superfluid helium using a pulsed Ti: sapphire laser
M. Hayasaka et al.

223

Microwave system development of enlarged spin-polarized proton target for RI beam experiments
S. Chebotaryov et al.

224

The off-line adjustment of the parasitic production of low-energy RI-beam system for installation in BigRIPS
T. Sonoda et al.

225

Current status of the gas cell ion beam cooler-buncher at SLOWRI
Y. Ito et al.

226

SCRIT luminosity monitor
S. Yoneyama et al.

227

Study of the performance of the SCRIT rear drift chamber
S. Matsuo et al.

228

Current status of RI beam production at electron-beam-driven RI separator for SCRIT (ERIS)
T. Ohnishi et al.

229

Development of the readout system for SCRIT WiSES
A. Enokizono et al.

230

New fast-kicker system for Rare RI Ring
Y. Yamaguchi et al.

231

CONTENTS

RIKEN Accel. Prog. Rep. 48 (2015)

Status of the resonant Schottky pick-up for the Rare RI Ring project
F. Suzaki et al.

232

Extraction of multi-nucleon transfer reaction products in 136Xe and 198Pt systems
Y. Hirayama et al.

233

Detector system for the KEK isotope separation system
S. Kimura et al.

234

Q-value resolution improvements in the spectroscopy of deeply bound pionic atoms using BigRIPS
T. Nishi et al.

235

Development of D2 gas-filled drift chamber for spectroscopy measurements of pionic atoms in inverse kinematics
Y.N. Watanabe et al.

236

Radiation monitoring in the RIBF using ionization chamber
M. Nakamura et al.

237

Measurement of activation around the He gas stripper at RIBF
A. Akashio et al.

238

Beam preparation for fee-based utilization of a 70-MeV/A Kr-beam
A. Yoshida and T. Kambara

239

Implantation of 7Be and 22Na beams for wear diagnostics application
A. Yoshida et al.

240

Development of a GEM tracker for the J-PARC E16 experiment
W. Nakai

241

Preparation status of the J-PARC E16 experiment: measurement of spectral change of vector mesons in nuclei
S. Yokkaichi et al.

242

Simulation of HBD response in the J-PARC E16 experiment based on test results
K. Kanno et al.

243

Resistive Plate Chamber (RPC) for BGOegg Experiment
T. Nam, N. Tomida

244

Quality assurance test of pixel detector ladders for VTX
T. Sumita et al.

245

Fast clear technique for NEBULA data acquisition for SAMURAI17 experiment
Y. Togano et al.

246

Test of the advanced implantation detector array (AIDA) at RIBF
C. Griffin et al.

247

CCJ operations in 2014
S. Yokkaichi et al.

248

Computing and network environment at the RIKEN Nishina Center
T. Ichihara, Y. Watanabe, H. Baba

249

Ⅲ. RESEARCH ACTIVITIES II (Material Science and Biology)
1. Atomic and Solid State Physics (Ion)
Hyperfine structure measurement of 133Cs atoms in superfluid helium
K. Imamura et al.

251

Lattice location and density distribution of hydrogen in β1-V2H
E. Yagi et al.

252

Observation of the FFLO-like nodal planes in the Au layer of Nb/Au/Fe trilayers by neutron reflectivity measurements
H. Yamazaki et al.

253

Response of polyimide films to U ion beams as etched-track detectors
T. Yamauchi et al.

254

High-density n-type doping of diamond by nitrogen beam implantation
H. Ueno et al.

255

2. Atomic and Solid State Physics (Muon)
μSR study of the magnetism and superconductivity in the multi-layered Bi-2223 high-Tc superconductor
T. Adachi et al.

257

μSR study of the Al-induced magnetic order in La2 − x SrxCu1 − y AlyO4
K. M. Suzuki et al.

258

μSR study of cluster-glass state in Sr1 − x LaxRuO3
I. Kawasaki et al.

259

Investigation of magnetic ground states in mixed kagome systems (Rb1 − x Csx)2Cu3SnF12 by μSR
T. Suzuki et al.

260

High pressure μSR study of quantum phase transition in CeNiAsO
H. Guo et al.

261

RIKEN Accel. Prog. Rep. 48 (2015)

CONTENTS

Investigation of hydrogen dynamics in hydroxyl salts Co2(OD)3Cl
X.G. Zheng et al.

262

Partial magnetic order in the quantum spin system NH4CuCl3
T. Goto et al.

263

Zn-substitution effects on distorted tetrahedral spin-chain system Cu3Mo2O9
H. Kuroe et al.

264

Magnetic ground state of Cu6O8MCl (M = Y, Pb) with a caged structure
K. Kawashima et al.

265

μSR studies on antiferromagnet RRu2Al10 (R = Sm, Gd)
H. Tanida, H. Guo et al.

266

Determination of muon sites on metal-organic hybrids of (C6H5CH2CH2NH3)2CuCl4 and (C2H5NH3)2CuCl4
E. Suprayoga et al.

267

Investigation of muon sites in YBa2Cu3O6 using density functional theory
S.S. Mohd-Tajudin

268

Muon sites in Ce(Ru, Rh)2Al10 investigated using Density Functional Theory from the perspective of electronic potential
N. Adam et al.

269

μSR study of the density wave state in α-(BEDT-TTF)2MHg(SCN)4 (M=K, Rb)
K. Ichimura et al.

270

Study on coupling between electron conduction and spin fluctuation in novel organic charge transfer complexes with TANC
M. Enomoto et al.

271

Study of charge carrier transport in active layer P3HT:ZnO:PCBM hybrid solar cells measured by muon spin relaxation
L. Safriani et al.

272

μSR study on antiferromagnetism in K-Rb alloy and Rb clusters in sodalite
T. Nakano et al.

273

Li-ion diffusion in LixFePO4 with x = 0, 0.25 and 0.5
I. Umegaki et al.

274

Investigations of defects in TiO2 rutile crystal by muon and muonium
K. Asakura, H. Ariga et al.

275

Response of muonium to oxygen contents in hemoglobin and other biological aqueous solutions for cancer research
K. Nagamine

276

Development of gas system for MuSEUM experiment
K. S. Tanaka et al.

277

Development of online muon beam profile monitor for the MuSEUM experiment
S. Kanda278

3. Radiochemistry and Nuclear Chemistry
Reversed-phase extraction behavior of the 105th element, Db, with tributyl phosphate
M. Murakami et al.

279

Solid-liquid extraction of 261Rf from hydrochloric acid with Aliquat 336 resin
T. Yokokita et al.

280

Extraction behavior of rutherfordium as a cationic fluoride complex with a 2-thenoyltrifluoroacetone chelate extractant from HF/HNO3
acidic solutions
Y. Kitayama et al.

281

Thermal stability of the group 6 hexacarbonyl complexes
I. Usoltsev et al.

282

Extraction behavior of Mo and W from H2SO4 using amine-extractant (Aliquat336) as homologs of seaborgium
A. Toyoshima et al.

283

Solvent extraction of short-lived radioisotopes of Mo and W from oxalic acid solution with Aliquat 336 for chemical studies of seaborgium (Sg)N. Goto et al.

284

Reversed-phase chromatography of Nb and Ta with TBP for conducting a chemical experiment on the 105th element, Db
M. Murakami et al.

285

Liquid-liquid extraction of Nb and Ta with Aliquat 336 from 0.27 M HF solution
D. Sato et al.

286

Coprecipitation Behaviors of Zr, Hf, and Th with Sm Hydroxide for Chemical Study of Element 104, Rf
Y. Kasamatsu, et al.

287

Liquid-liquid extraction of zirconium and hafnium with 2-thenoyltrifluoroacetone for chemical studies of element 104, rutherfordium
A. Tanaka et al.

288

Production of platinum radiotracer for Gamma-Ray Emission Imaging
S. Komoto et al.

289

Production of 88Y for gamma-ray emission imaging
K. Higashikawa et al290

CONTENTS

RIKEN Accel. Prog. Rep. 48 (2015)

99

Ru Mössbauer spectroscopy of Na-ion batteries of Na2RuO3 (I)Y. Kobayashi et al.

291

Production of 262, 263Db in the 248Cm(19F,xn)267-xDb reactions at Elab = 96 MeV
M. Murakami et al.

292

Production of 174Re in the natGd(23Na,xn) reactions for future studies on Bh chemistry using GARIS
H. Haba et al.

293

Excitation function of the natHf(α,x)182gTa reaction: Cyclotron production of a long-lived γ-ray emitter 182gTa
M. Murakami et al.

294

Production cross sections of (d,x) reactions on natural ytterbium
M. U. Khandaker and H. Haba

295

Measurement of production cross sections of Tc isotopes in the natMo(d,x) reactions
Y. Komori et al.

296

Measurements of alpha-induced cross section for 48Cr and 49Cr up to 50 MeV
H. Kikunaga et al.

297

Improvement in the chemical yield of purified 109Cd for fee-based distribution at the RIKEN AVF cyclotron
Y. Wakitani et al.

298

Preparation of no-carrier-added 85Sr using the natRb(d,x)85Sr reaction
S. Yano et al.

299

4. Radiation Chemistry and Biology
Localization of Rad51 and phosphorylated DNA-PKsc after heavy-ion irradiation in mammalian cells
M. Izumi et al.

301

Low-dose high-LET heavy ion-induced bystander signaling
M. Tomita et al.

302

Effect of days after irradiation on lethal rate of F3 progeny in the fruit fly mutation isolation system
K. Tsuneizumi and T. Abe

303

Extra-early-flowering wheat mutants produced by heavy-ion-beam mutagenesis
A. Nishiura et al.

304

Heredity analysis of radiation induced semidwarf mutants in Tartary buckwheat (Fagopyrum tataricum Gaertn.)
T. Morishita et al305

Effects of Ar-ion beam irradiation on inducing mutations in chrysanthemum and sweetpotato
Y. Tanokashira et al.

306

Rapid screening of heavy-ion-induced large deletion mutants by using quantitative real-time PCR in Arabidopsis thaliana
Y. Kazama et al.

307

LET-dependent effect on mutation induction DNA repair-deficient background in Arabidopsis thaliana
K. Ishii et al.

308

Characterization of isolates derived from heavy-ion-beam irradiated cells in the unicellular green alga Parachlorella kessleri
T. Yamazaki et al.

309

Effects of Ar-ion beam irradiation on survival rate of Aurantiochytrium sp.
K. Ikeda et al.

310

Analysis of DNA breakpoint detected from rice exome sequencing data
R. Morita et al.

311

Establishment of rice transformation systems to study gene functions
R. Morita et al.

312

Functional analysis of a new virescent mutant in rice induced by heavy-ion beam irradiation
H. Abe et al.

313

Tracking alleles linked with Fusarium head blight resistance QTLs in wheat (Triticum aestivum) released in Kyushu region
S. Niwa et al.

314

Ion track observation in cell nucleus irradiated by 3 MeV He ion microbeams produced with glass capillaries
T. Ikeda et al.

315

Estimation method of microbeam divergence from glass capillaries for biological use
R.J. Bereczky et al.

316

Fricke nanocomposite gel dosimeter for heavy ion beam irradiation
T. Maeyama et al.

317

Ⅳ. OPERATION RECORDS
Program Advisory Committee meetings for nuclear physics and for material and life science
K. Yoneda et al.

319

Beam-time statistics of RIBF experiments
K. Yoneda et al.

320

RIKEN Accel. Prog. Rep. 48 (2015)

CONTENTS

Operation report of the industrial cooperation teamA. Yoshida et al.

321

Electric power condition of Wako campus in 2014
E. Ikezawa et al.

322

Radiation safety management at RIBF
K. Tanaka et al.

323

RILAC operation
E. Ikezawa et al.

326

AVF operations in 2014
N. Tsukiori et al.

327

Present status of the liquid-helium supply and recovery system
T. Dantsuka et al.

328

Operation of the superconducting ring cyclotron cryogenic system
H. Okuno et al.

329

Present status of the BigRIPS cryogenic plant
K. Kusaka et al.

330

Operation report on the ring-cyclotrons in the RIBF accelerator complex
S. Fukuzawa et al.

331

Ⅴ. EVENTS

333

Ⅵ. ORGANIZATION AND ACTIVITIES OF RIKEN NISHINA CENTER (Activities and Members)

337

Organization

337

Finances

338

Staffing

339

Research publication

339

Management

340

International Collaboration

345

Awards347

Brief overview of the RI Beam Factory

347

Theoretical Research Division

Quantum Hadron Physics Laboratory

350

Theoretical Nuclear Physics Laboratory

353

Strangeness Nuclear Physics Laboratory

356

Mathematical Physics Laboratory

358

Sub Nuclear System Research Division
Radiation Laboratory

361

Advanced Meson Science Laboratory

365

RIKEN-BNL Research Center

370

Theory Group371

Computing Group

373

Experimental Group375

RIKEN Facility Office at RAL

379

RIBF Research Division
Radioactive Isotope Physics Laboratory

382

Spin isospin Laboratory

386

Nuclear Spectroscopy Laboratory

389

High Energy Astrophysics Laboratory

391

Astro-Glaciology Research Unit

393

Research Group for Superheavy Element

394

Superheavy Element Production Team

396

Superheavy Element Research Device Development Team

397

Nuclear Transmutation Data Research Group
Fast RI Data Team

398
399

CONTENTS

RIKEN Accel. Prog. Rep. 48 (2015)
Slow RI Data Team400

Muon Data Team401

High-Intensity Accelerator R&D Group402

High-Gradient Cavity R&D Team403

High-Power Target R&D Team404

Accelerator Group405

Accelerator R&D Team406

Ion Source Team407

RILAC Team

408

Cyclotron Team409

Beam Dynamics & Diagnostics Team410

Cryogenic Technology Team

411

Infrastructure Management Team

412

Instrumentation Development Group413

SLOWRI Team

414

Rare RI-ring Team

417

SCRIT Team

419

Research Instruments Group

421

BigRIPS Team422

SAMURAI Team

424

Computing and Network Team

425

Detector Team

427

Accelerator Applications Research Group

428

Ion Beam Breeding Team429

RI Applications Team

431

User Liaison and Industrial Cooperation Group

433

User Support Office434

Industrial Cooperation Team

435

Safety Management Group
Partner Institution

436
437

Center for Nuclear Study (CNS), The University of Tokyo

438

Center for Radioactive Ion Beam Sciences, Niigata University

441

Radioactive Nuclear Beam Group, Institute for Particle and Nuclear Studies, KEK

443

Events (April 2014 - March 2015)

445

Press Releases (April 2014 - March 2015)

446

Ⅶ. LIST OF PUBLICATIONS & PRESENTATIONS

447

Ⅷ. LIST OF PREPRINTS

531

Ⅸ. LIST OF SYMPOSIA & WORKSHOPS

535

Ⅹ. LIST OF SEMINARS

537

AUTHOR INDEX

547