VI. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 54 (2021)

Partner Institution
Center for Nuclear Study, Graduate School of Science
The University of Tokyo
1. Abstract

The Center for Nuclear Study (CNS) aims to elucidate the nature of nuclear system by producing the characteristic states where
the Isospin, Spin and Quark degrees of freedom play central roles. These researches in CNS lead to the understanding of the matterbased on common natures of many-body systems in various phases. We also aim at elucidating the explosion phenomena and theevolution of the universe 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. The OEDO facility has been developed as an upgrade of the SHARAQ, where a RF deflector system has been introduced toobtain a good quality of low-energy beam. A new project for fundamental symmetry using heavy RIs has been starting to install new
experimental devices in the RIBF. 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 to young scientists
in the heavy-ion science through the graduate course as a member of the department of physics in the University of Tokyo and throughhosting the international summer school.

2. Major Research Subjects(1) Accelerator Physics(2) Nuclear Astrophysics(3) Nuclear spectroscopy of exotic nuclei(4) Quark physics(5) Nuclear Theory(6) OEDO/SHARAQ project(7) Exotic Nuclear Reaction(8) Low Energy Nuclear Reaction Group(9) Active Target Development(10) 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 transport system to CRIB, E7B, and C12 in the E7 experiment room. In 2020, the operatingtime of the HyperECR was 1146 hours. The beam extraction system of the HyperECR is developed to realize a high intensity and low
emittance beam and the study of mixing gas is started for heavy ionization. The calculation model of injection beam orbit of the AVF
cyclotron was completed and the study of the optimization of injection beam orbit was started. For the detailed studies on ion opticsof the beamline to CRIB and experiment device of Fr-EDM measurement from AVF cyclotron, the development of 4-dimensional
emittance monitor for high power ion beams was started. the prototype was completed and evaluated for performance.
(2) Nuclear astrophysics
The main activity of the nuclear astrophysics group is to study astrophysical reactions and special nuclear structure, such as
clusters, using the low-energy RI beam separator CRIB. To produce RI beams at CRIB with higher intensity, a project to improve theheat durability of the cryogenic gas target is in progress. In 2020, we used a high-current oxygen beam to test the heat durability of thegas target. Sealing foils of several materials and copper extention parts were employed in the test, and we found the target can standfor the beam heat much exceeding the previous limit of 2 Watts per foil. The secondary beam development is also on going. A 6 He
RI beam was first produced at CRIB in March 2021, as the lightest RI beam ever created at CRIB. We successfully produced a 6 He
beam at the intensity more than 105 pps, which is to be used for the approved 6 He + p scattering measurement, as well as other future
experiments.
(3) Nuclear structure of exotic nuclei
The NUSPEQ (NUclear SPectroscopy for Extreme Quantum system) group studies exotic structures in high-isospin and/or highspin states 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. The group plays a major role in the OEDO/SHARAQ project described below. In 2020, analysis of a new measurementof the 4 He(8 He, 8 Be)4n reaction for better statistics and better accuracy has been proceeding.
(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- 348 -

VI. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 54 (2021)

has involved in the data analyses, which include the measurement of low-mass lepton pairs in Pb-Pb collisions, the measurement oflong range two particle correlations in p-Pb collisions, searches for thermal photons in high multiplicity pp and p-Pb collisions andfor strangeness dibaryons. The group has involved in the ALICE-TPC upgrade using a Gas Electron Multiplier (GEM), where thegroup is very active in the development and benchmarking of the online space-charge distortion corrections using machine learningtechniques running on the Graphical Processing Unit (GPU).
(5) Nuclear theory
The nuclear theory group participates in a project, “Program for Promoting Researches on the Supercomputer Fugaku” andpromotes computational nuclear physics utilizing the Fugaku supercomputer. In FY2020, we proposed a new framework called the“quasi-particle vacua shell model,” which is an extension of the Monte Carlo shell model, and promoted its code developments.
Based on these methodological developments, we investigated the exotic structure of nuclei, especially neutron-rich Mg isotopes,
and discussed the mechanism to determine the neutron drip line. In addition, the nuclear Schiﬀ moments of 129 Xe and 199 Hg weretheoretically evaluated by large-scale shell-model calculations to contribute to the experimental search of time-reversal breaking. In
parallel, we promoted the collaborative researches with experimental groups for investigating the exotic structure of unstable nuclei,
such as 35 S, 30 Mg, 64 Ni, 75 Ni, 112 Sn and 137 Ba.
(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-Bρ technique for very neutron-rich nuclei successfully reaches titanium isotopes at
N = 40, 62 Ti, of which the report was published in 2020. The experimental study of 0− strength in nuclei using the parity-tansfer
charge exchange (16 O, 16 F) will be reported soon. As for The OEDO beamline, the results of the first and second experiments for
LLFPs will be finalized and reported soon. Since experimental studies using OEDO were newly proposed, we continue developments
to improve the performance for coming these beam times, such as the intensity of low-energy RI beams and the suppression of X raysfrom RF deflector.
(7) Exotic nuclear reaction
The Exotic Nuclear Reaction group studies various exotic reactions induced by beams of unstable nuclei. One subject is inversekinematics (p, n) measurement by using the neutron counter array PANDORA. Candidate nuclei to study are high spin isomers such as
52
Fe(12+ ). Study of the production mechanism of high-spin isomer beams was in progress. Another is search of double Gamow-Teller
resonance by a double charge exchange reaction (12 C, 12 Be). Preparations including the development of MWDCs were ongoing.
(8) Low energy nuclear reaction group
A recoil particle detector for missing mass spectroscopy, named TiNA, had been upgraded under the collaboration with RIKEN
and RCNP. The original TiNA consisted of 6 sector telescopes and 12 CsI (Tl) crystals. Four TTT-type (1024 channels) doubly-sided
silicon detectors and twenty-two CsI(Tl) were added to make a TiNA2 array. The commissioning experiment of the TiNA2 wasconducted at Kyushu University in March 2021. The production cross sections of 178m2 Hf were evaluated for the mass production in
the future and will be reported soon. The digital signal processing devices for the GRAPE are under development. For the SHARAQ11
experiment which uses a tritium-doped titanium target, the safety devices has been developed with Tohoku University.
(9) Active target development
Three gaseous active target TPCs called CAT-S, CAT-M and GEM-MSTPC are developed and used for the missing mass spectroscopies. The CAT’s are employed for the study of equation of state of nuclear matter. The measurement of giant monopole resonancein 132 Sn at RIBF with CAT-S and the data analysis is ongoing. The CAT-M was employed for the measurements of the proton inelastic
scattering on 136 Xe at HIMAC and the proton elastic scattering on 132 Sn. The development for the reduction of space charge due tothe ion backflow and the reduction of delta-ray background is ongoing. The GEM-MSTPC is employed for the nuclear astrophysics
study. The data analysis of (α, p) reaction on 18 Ne and 22 Mg and the β-decay of 16 Ne followed by α emission are ongoing.
(10) Fundamental physics
In order to investigate the origin of matter-antimatter symmetry (CP) violation, we focused on the fact that the permanent electric
dipole moment (EDM) of heavy elements such as Francium (Fr) is greatly enhanced by the relativistic eﬀect and octupole deformationof the nucleus. The development of the laser cooled Fr source is in progress at RIBF. In particular, we have established a technique fora high-intensity Fr source by using the nuclear fusion reaction with a surface ionization ion source using a non-contact heating methodwith an infrared heater. Also the frequency stabilization with an iodine molecule and a high-precision wavemeter are ready at present.
Furthermore, by establishing a coexistence trapping technique for two types of Rb isotopes, we have established a co-magnetometer
for an accurate EDM measurement.

Members
Director
Susumu SHIMOURA- 349 -

VI. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 54 (2021)

Scientific Staﬀ
Susumu SHIMOURA (Professor)
Yasuhiro SAKEMI (Professor)
Kentaro YAKO (Associate Professor)
Nobuaki IMAI (Associate Professor)
Taku GUNJI (Associate Professor)

Noritaka SHIMIZU (Project Associate Professor)
Hidetoshi YAMAGUCHI (Lecturer)
Shin’ichiro MICHIMASA (Assistant Professor)
Shinsuke OTA (Assistant Professor)
Hiroki NAGAHAMA (Assistant Professor)

Guest Scientists
Yutaka UTSUNO (Guest Professor)
Daiki NISHIMURA (Guest Associate Professor)

Toshitaka KAJINO (Guest Post Doctoral Associate)
Ikuko HAMAMOTO (Guest Post Doctoral Associate)

Technical Staﬀ
Yasuteru KOTAKA
Techinical Assistant
Masayoshi YAGYU
Project Research Associates
Masanori DOZONO

Seiya HAYAKAWA

Post Doctoral Associates
Daiki SEKIHATA
Keisuke NAKAMURA
Keita KAMAKURA
Nanru MA

Yusuke TSUNODA
Kota YANASE
Thomas William CHILLERY

Assistant Teaching Staﬀ
Yuko SEKIGUCHI
Keita KAWATA

Noritaka KITAMURA
Shumpei KOYAMA

Academic Support Staﬀ
Reiko KOJIMA
Graduate Students
Shoichiro MASUOKA
Hideki SHIMIZU
Rieko TSUNODA
Naoya OZAWA

Shutaro HANAINatsuki SHIMIZU
Shintaro NAGASE
Ryotaro KOHARA

Research Student
Jiatai LI
Administration Staﬀ
Noriko SHIMANE
Ikuko YAMAMOTO
Takako ENDO

Yukino KISHI
Aki KOTAKA

List of Publications & Presentations
Publications[Original Papers]
Z. H. Yang, Y. Kubota, A. Corsi, K. Yoshida, X. -X. Sun, J. G. Li, M. Kimura, N. Michel, K. Ogata, C. X. Yuan, Q. Yuan, G. Authelet,
H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J. -M. Gheller, J. Gibelin, A. Giganon, A. Gillibert,
K. Hasegawa, T. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa, M. Kobayashi, N. Kobayashi, T. Kobayashi, Y. Kondo,
Z. Korkulu, S. Koyama, V. Lapoux, Y. Maeda, F. M. Marqúes, T. Motobayashi, T. Miyazaki, T. Nakamura, N. Nakatsuka, Y. Nishio,
A. Obertelli, A. Ohkura, N. A. Orr, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Paschalis, E. C. Pollacco, S. Reichert, J. -Y. Roussé,A. T. Saito, S. Sakaguchi, M. Sako, C. Santamaria, M. Sasano, H. Sato, M. Shikata, Y. Shimizu, Y. Shindo, L. Stuhl, T. Sumikama,
Y. L. Sun, M. Tabata, Y. Togano, J. Tsubota, F. R. Xu, J. Yasuda, K. Yoneda, J. Zenihiro, S. -G. Zhou, W. Zuo, and T. Uesaka, “Quasifree
neutron knockout reaction reveals a small s-orbital component in the borromean nucleus 17 B,” Phys. Rev. Lett. 126, 082501 (2021).
Y. Kubota, A. Corsi, G. Authelet, H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J. -M. Gheller, J. Gibelin,
A. Giganon, A. Gillibert, K. Hasegawa, T. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kikuchi, Y. Kiyokawa, M. Kobayashi,
N. Kobayashi, T. Kobayashi, Y. Kondo, Z. Korkulu, S. Koyama, V. Lapoux, Y. Maeda, F. M. Marqués, T. Motobayashi, T. Miyazaki,
T. Nakamura, N. Nakatsuka, Y. Nishio, A. Obertelli, K. Ogata, A. Ohkura, N. A. Orr, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Paschalis,
E. C. Pollacco, S. Reichert, J. -Y. Roussé, A. T. Saito, S. Sakaguchi, M. Sako, C. Santamaria, M. Sasano, H. Sato, M. Shikata,Y. Shimizu, Y. Shindo, L. Stuhl, T. Sumikama, Y. L. Sun, M. Tabata, Y. Togano, J. Tsubota, Z. H. Yang, J. Yasuda, K. Yoneda,
J. Zenihiro, and T. Uesaka, “Surface localization of the dineutron in 11 Li,” Phys. Rev. Lett. 125, 252501 (2020).

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VI. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 54 (2021)

N. Kitamura, K. Wimmer, N. Shimizu, V. M. Bader, C. Bancroft, D. Barofsky, T. Baugher, D. Bazin, J. S. Berryman, V. Bildstein, A. Gade,
N. Imai, T. Kröll, C. Langer, J. Lloyd, E. Lunderberg, G. Perdikakis, F. Recchia, T. Redpath, S. Saenz, D. Smalley, S. R. Stroberg,
J. A. Tostevin, N. Tsunoda, Y. Utsuno, D. Weisshaar, and A. Westerberg, “Structure of 30 Mg explored via in-beam γ-ray spectroscopy,”
Phys. Rev. C 102, 054318 (2020).
S. Momiyama, K. Wimmer, D. Bazin, J. Belarge, P. Bender, B. Elman, A. Gade, K. W. Kemper, N. Kitamura, B. Longfellow, E. Lunderberg, M. Niikura, S. Ota, P. Schrock, J. A. Tostevin, and D. Weisshaar, “Shell structure of 43 S and collapse of the N = 28 shell closure,”
Phys. Rev. C 102, 034325 (2020).
T. Noro, T. Wakasa, T. Ishida, Hidetomo P. Yoshida, M. Dozono, H. Fujimura, K. Fujita, K. Hatanaka, T. Ishikawa, M. Itoh, J. Kamiya,
T. Kawabata, Y. Maeda, H. Matsubara, M. Nakamura, H. Sakaguchi, Y. Sakemi, Y. Shimizu, H. Takeda, Y. Tameshige, A. Tamii,
K. Tamura, S. Terashima, M. Uchida, Y. Yasuda, and M. Yosoi, “Experimental study of (p, 2p) reactions at 392 MeV on 12 C, 16 O, 40 Ca
and 208 Pb nuclei leading to low-lying states of residual nuclei,” Prog. Theor. Exp. Phys. 2020, 093D02 (2020).
K. B. Howard, U. Garg, M. Itoh, H. Akimune, M. Fujiwara, T. Furuno, Y. K. Gupta, M. N. Harakeh, K. Inaba, Y. Ishibashi, K. Karasudani,
T. Kawabata, A. Kohda, Y. Matsuda, M. Murata, S. Nakamura, J. Okamoto, S. Ota, J. Piekarewicz, A. Sakaue, M.Şenyiğit, M. Tsumura,and Y. Yang, “Compressional-mode resonances in the molybdenum isotopes: Emergence of softness in open-shell nuclei near A = 90,”
Phys. Lett. B 807, 135608 (2020).
A. Frotscher, M. Gómez-Ramos, A. Obertelli, P. Doornenbal, G. Authelet, H. Baba, D. Calvet, F. Château, S. Chen, A. Corsi, A. Delbart,
J. -M. Gheller, A. Giganon, A. Gillibert, T. Isobe, V. Lapoux, M. Matsushita, S. Momiyama, T. Motobayashi, M. Niikura, H. Otsu,
N. Paul, C. Péron, A. Peyaud, E. C. Pollacco, J. -Y. Roussé, H. Sakurai, C. Santamaria, M. Sasano, Y. Shiga, N. Shimizu, D. Steppenbeck, S. Takeuchi, R. Taniuchi, T. Uesaka, H. Wang, K. Yoneda, T. Ando, T. Arici, A. Blazhev, F. Browne, A. M. Bruce, R. Carroll,
L. X. Chung, M. L. Cortées, M. Dewald, B. Ding, Zs. Dombradi, F. Flavigny, S. Franchoo, F. Giacoppo, M. Górska, A. Gottardo,
K. Hadyńska-Klȩk, Z. Korkulu, S. Koyama, Y. Kubota, A. Jungclaus, J. Lee, M. Lettmann, B. D. Linh, J. Liu, Z. Liu, C. Lizarazo,
C. Louchart, R. Lozeva, K. Matsui, T. Miyazaki, K. Moschner, S. Nagamine, N. Nakatsuka, C. Nita, S. Nishimura, C. R. Nobs,
L. Olivier, S. Ota, Z. Patel, Zs. Podolyák, M. Rudigier, E. Sahin, T. Y. Saito, C. Shand, P. -A. Söderström, I. G. Stefan, T. Sumikama,
D. Suzuki, R. Orlandi, V. Vaquero, Zs. Vajta, V. Werner, K. Wimmer, J. Wu, and Z. Xu, “Sequential nature of (p, 3p) two-proton
knockout from neutron-rich nuclei,” Phys. Rev. Lett. 125 012501 (2020).
A. E. Barzakh, D. Atanasov, A. N. Andreyev, M. Al Monthery, N. A. Althubiti, B. Andel, S. Antalic, K. Blaum, T. E. Cocolios, J. G. Cubiss, P. Van Duppen, T. Day Goodacre, A. de Roubin, G. J. Farooq-Smith, D. V. Fedorov, V. N. Fedosseev, D. A. Fink, L. P. Gaﬀney,
L. Ghys, R. D. Harding, M. Huyse, N. Imai, S. Kreim, D. Lunney, K. M. Lynch, V. Manea, B. A. Marsh, Y. Martinez Palenzuela,
P. L. Molkanov, D. Neidherr, M. Rosenbusch, R. E. Rossel, S. Rothe, L. Schweikhard, M. D. Seliverstov, S. Sels, C. Van Beveren,
E. Verstraelen, A. Welker, F. Wienholtz, R. N. Wolf, and K. Zuber, “Shape coexistence in 187 Au studied by laser spectroscopy,” Phys.
Rev. C 101, 064321 (2020).
R. D. Harding, A. N. Andreyev, A. E. Barzakh, D. Atanasov, J. G. Cubiss, P. Van Duppen, M. Al Monthery, N. A. Althubiti, B. Andel,
S. Antalic, K. Blaum, T. E. Cocolios, T. Day Goodacre, A. de Roubin, G. J. Farooq-Smith, D. V. Fedorov, V. N. Fedosseev, D. A. Fink,
L. P. Gaﬀney, L. Ghys, D. T. Joss, F. Herfurth, M. Huyse, N. Imai, S. Kreim, D. Lunney, K. M. Lynch, V. Manea, B. A. Marsh,
Y. Martinez Palenzuela, P. L. Molkanov, D. Neidherr, R. D. Page, A. Pastore, M. Rosenbusch, R. E. Rossel, S. Rothe, L. Schweikhard,
M. D. Seliverstov, S. Sels, C. Van Beveren, E. Verstraelen, A. Welker, F. Wienholtz, R. N. Wolf, and K. Zuber, “Laser-assisted decay
spectroscopy for the ground states of 180, 182 Au,” Phys. Rev. C 102, 024312 (2020).
J. G. Cubiss, A. N. Andreyev, A. E. Barzakh, V. Manea, M. Al Monthery, N. A. Althubiti, B. Andel, S. Antalic, D. Atanasov, K. Blaum,
T. E. Cocolios, T. Day Goodacre, A. de Roubin, G. J. Farooq-Smith, D. V. Fedorov, V. N. Fedosseev, D. A. Fink, L. P. Gaﬀney, L. Ghys,
R. D. Harding, F. Herfurth, M. Huyse, N. Imai, D. T. Joss, S. Kreim, D. Lunney, K. M. Lynch, B. A. Marsh, Y. Martinez Palenzuela,
P. L. Molkanov, D. Neidherr, G. G. O’Neill, R. D. Page, M. Rosenbusch, R. E. Rossel, S. Rothe, L. Schweikhard, M. D. Seliverstov,S. Sels, A. Stott, C. Van Beveren, P. Van Duppen, E. Verstraelen, A. Welker, F. Wienholtz, R. N. Wolf, and K. Zuber, “Laser-assisted
decay spectroscopy and mass spectrometry of 178 Au,” Phys. Rev. C 102, 044332 (2020).
T. L. Tang, T. Uesaka, S. Kawase, D. Beaumel, M. Dozono, T. Fujii, N. Fukuda, T. Fukunaga, A. Galindo-Uribarri, S. H. Hwang, N. Inabe,
D. Kameda, T. Kawahara, W. 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, K. Ogata, 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. Yoshida, K. Yoshida, and J. Zenihiro, “How diﬀerent is the core of 25 F from 24 Og.s. ,” Phys. Rev. Lett. 124, 212502 (2020).
S. Michimasa, M. Kobayashi, Y. Kiyokawa, S. Ota, R. Yokoyama, D. Nishimura, D. S. Ahn, H. Baba, G. P. A. Berg, M. Dozono,
N. Fukuda, T. Furuno, E. Ideguchi, N. Inabe, T. Kawabata, S. Kawase, K. Kisamori, K. Kobayashi, T. Kubo, Y. Kubota, C. S. Lee,
M. Matsushita, H. Miya, A. Mizukami, H. Nagakura, H. Oikawa, H. Sakai, Y. Shimizu, A. Stolz, H. Suzuki, M. Takaki, H. Takeda,
S. Takeuchi, H. Tokieda, T. Uesaka, K. Yako, Y. Yamaguchi, Y. Yanagisawa, K. Yoshida, and S. Shimoura, “Mapping of a new
deformation region around 62 Ti,” Phys. Rev. Lett. 125, 122501 (2020).
D. Nagae, Y. Abe, S. Okada, S. Omika, K. Wakayama, S. Hosoi, S. Suzuki, T. Moriguchi M. Amano, D. Kamioka, Z. Ge, S. Naimi,
F. Suzaki, N. Tadano, R. Igosawa, K. Inomata H. Arakawa, K. Nishimuro, T. Fujii, T. Mitsui, Y. Yanagisawa, H. Baba, S. Michimasa,
S. Ota, G. Lorusso, Yu.A. Litvinov, A. Ozawa, T. Uesaka, T. Yamaguchi, Y. Yamaguchi, and M. Wakasugi, “Development and operationof an electrostatic time-of-flight detector for the Rare RI storage Ring,” Nucl. Instrum. Methods Phys. Res. A 986, 164713 (2021).
H. Suzuki, K. Yoshida, N. Fukuda, H. Takeda, Y. Shimizu, D. S. Ahn, T. Sumikama, N. Inabe, T. Komatsubara, H. Sato, Z. Korkulu,
K. Kusaka, Y. Yanagisawa, M. Ohtake, H. Ueno, T. Kubo, S. Michimasa, N. Kitamura, K. Kawata, N. Imai, O. B. Tarasov, D. Bazin,
J. Nolen, and W. F. Henning “Experimental studies of the two-step scheme with an intense radioactive 132 Sn beam for next-generation
production of very neutron-rich nuclei,” Phys. Rev. C 102, 064615 (2020).
T. Sumikama. D. S. Ahn. N. Fukuda, Y. Shimizu, H. Suzuki, H. Takeda, H. Wang, K. Yoshida, J. Amano, N. Chiga, K. Chikaato,
A. Hirayama, N. Inabe, S. Kawase, S. Kubono, M. Matsushita, S. Michimasa, K. Nakano, H. Otsu, H. Sakurai, A. Saito, S. Shimoura,- 351 -

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J. Suwa, M. Takechi, S. Takeuchi, Y. Togano, T. Tomai, and Y. Watanabe, “Energy-control and novel particle-identification methods
combined with range in a multi-sampling ionization chamber for experiments using slowed-down RI beams,” Nucl. Instrum. Methods
Phys. Res. A 986, 164687 (2021).
Y. L. Sun, T. Nakamura, Y. Kondo, Y. Satou, J. Lee, T. Matsumoto, K. Ogata, Y. Kikuchi, N. Aoi, Y. Ichikawa, K. Ieki, M. Ishihara,
T. Kobayshi, T. Motobayashi, H. Otsu, H. Sakurai, T. Shimamura, S. Shimoura, T. Shinohara, T. Sugimoto, S. Takeuchi, Y. Togano,and K. Yoneda, “Three-body breakup of 6 He and its halo structure,” Phys. Lett. B 814, 136072 (2021).
S. Go, E. Ideguchi, R. Yokoyama, N. Aoi, F. Azaiez, K. Furutaka, Y. Hatsukawa, A. Kimura, K. Kisamori, M. Kobayashi, F. Kitatani, M. Koizumi, H. Harada, I. Matea, S. Michimasa, H. Miya, S. Nakamura, M. Niikura, H. Nishibata, N. Shimizu, S. Shimoura,
T. Shizuma, M. Sugawara, D. Suzuki, M. Takaki, Y. Toh, Y. Utsuno, D. Verney, and A. Yagi, “High-spin states in 35 S,” Phys. Rev. C
103, 034327 (2021).
G. G. Kiss, M. La Cognata, C. Spitaleri, R. Yarmukhamedov, I. Wiedenhöver, L. T. Baby, S. Cherubini, A. Cvetinović, G. D’Agata,
P. Figuera, G. L. Guardo, M. Gulino, S. Hayakawa, I. Indelicato, L. Lamia, M. Lattuada, F. Mudò, S. Palmerini, R. G. Pizzone,
G. G. Rapisarda, S. Romano, M. L. Sergi, R. Spartà, O. Trippella, A. Tumino, M. Anastasiou, S. A. Kuvin, N. Rijal, B. Schmidt,
S. B. Igamov, S. B. Sakuta, K. I. Tursunmakhatov, Zs. Fülöp, Gy. Gyürky, T. Szücs, Z. Halász, E. Somorjai, Z. Hons, J. Mrázek,
R. E. Tribble, and A. M. Mukhamedzhanov, “Astrophysical S -factor for the 3 He(α, γ)7 Be reaction via the asymptotic normalizationcoeﬃcient (ANC) method,” Phys. Lett. B 807, 135606 (2020).
L. Yang, C. J. Lin, Y. X. Zhang, P. W. Wen, H. M. Jia, D. X. Wang, N. R. Ma, F. Yang, F. P. Zhong, S. H. Zhong, and T. P. Luo, “Bayesiananalysis on interactions of exotic nuclear systems,” Phys. Lett. B 807, 135540 (2020).
L. Yang, C. J. Lin, H. Yamaguchi, J. Lei, P. W. Wen, M. Mazzocco, N. R. Ma, L. J. Sun, D. X. Wang, G. X. Zhang, K. Abe, S. M. Cha,
K. Y. Chae, A. Diaz-Torres, J. L. Ferreira, S. Hayakawa, H. M. Jia, D. Kahl, A. Kim, M. S. Kwag, M. La Commara, R. Navarro Pérez,
C. Parascandolo, D. Pierroutsakou, J. Rangel, Y. Sakaguchi, C. Signorini, E. Strano, X. X. Xu, F. Yang, Y. Y. Yang, G. L. Zhang,
F. P. Zhong, and J. Lubian, “Insight into the reaction dynamics of proton drip-line nuclear system 17 F + 58 Ni at near-barrier energies,”
at near-barrier energies,” Phys. Lett. B 813, 136045 (2021).
N. Iwasa S. Ishikawa, S. Kubono, T. Sakakibara, K. Kominato, K. Nishio, M. Matsuda, K. Hirose, H. Makii, R. Orlandi, K. Asada,
D. Guru, S. Nishimura, S. Hayakawa, and T. Kawabata, “Experimental study of the Γ p1 /Γ p0 ratios of resonance states in 8 Be fordeducing the 7 Be(n, p1 )7 Li∗ reaction rate relevant to the cosmological lithium problem,” Phys. Rev. C 103, 015801 (2021).
D. X. Wang, C. J. Lin, L. Yang, N. R. Ma, L. J. Sun, F. Yang, H. M. Jia, F. P. Zhong, and P. W. Wen, “Compact 16-channel integrated
charge-sensitive preamplifier module for silicon strip detectors,” Nucl. Sci. Tech. 31, 48 (2020).
Y. J. Yao, C. J. Lin, L. Yang, N. R. Ma, D. X. Wang, G. L. Zhang, G. X. Zhang, H. M. Jia, F. Yang, F. P. Zhong, P. W. Wen, X. B. Qin,
and H. M. Zhao, “Relative probabilities of breakup channels in reactions of 6, 7 Li with 209 Bi at energies around and above the Coulomb
barrier,” Chin. Phys. C 45, 054104 (2021).
Y. J. Yao, C. J. Lin, L. Yang, N. R. Ma, D. X. Wang, G. L. Zhang, G. X. Zhang, H. M. Jia, and F. Yang, “The eﬀects of beam drifts onelastic scattering measured by the large solid-angle covered detector array,” Nucl. Sci. Tech. 32, Article number:14 (2021).
√√
Shreyasi Acharya et al. (ALICE Collaboration), “Production of light-flavor hadrons in pp collisions at s = 7 and s = 13 TeV,” Eur.
Phys. J. C 81, 256 (2021).
0
U. A. Acharya et√ al. (PHENIX Collaboration), “Transverse single-spin asymmetries of midrapidity π and η mesons in polarized p + p
collisions at s = 200 GeV,” Phys. Rev. D 103, 052009 (2021).
J. Adolfsson et al. (ALICE TPC Collaboration), “The upgrade of the ALICE TPC with GEMs and continuous readout,” J. Instrum. 16,
P03022 (2021).
U. A. Acharya et al. (PHENIX Collaboration),“Transverse momentum dependent forward neutron single spin asymmetries in transversely√
polarized p + p collisions at s = 200 GeV,” Phys. Rev. D 103, 032007 (2021),
Shreyasi Acharya et al. (ALICE Collaboration), “Pion-kaon femtoscopy and the lifetime of the hadronic phase in Pb-Pb collisions at√
sNN = 2.76 TeV,” Phys. Lett. B 813, 136030 (2021).
Shreyasi Acharya et al. (ALICE Collaboration), “Transverse-momentum and event-shape dependence of D-meson flow harmonics in√
Pb-Pb collisions at sNN = 5.02 TeV,” Phys. Lett. B 813, 136054 (2021).
Shreyasi Acharya et al. (ALICE Collaboration), “Centrality dependence of J/ψ and ψ(2S) production and nuclear modification in p-Pb√
collisions at sNN = 8.16 TeV,” J. High Energy Phys. 2102, 002 (2021).
T. Awes et al., “Design and performance of a silicon tungsten calorimeter prototype module and the associated readout,” Nucl. Instrum.
Methods Phys. Res. A 988, 164796 (2021).
Shreyasi Acharya et al. (ALICE Collaboration), “Unveiling the strong interaction among hadrons at the LHC,” Nat. Phys. 588, 232–238(2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Search for a common baryon source in high-multiplicity pp collisions at the LHC,”
Phys. Lett. B 811, 135849 (2020).
√
U. Acharya et al. (PHENIX Collaboration), “Production of π0 and η mesons in U + U collisions at sNN = 192 GeV,” Phys. Rev. C 102,
064905 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Dielectron production in proton-proton and proton-lead collisions at sNN = 5.02 TeV,”
Phys. Rev. C 102, 055204 (2020).
U. Acharya et al. (PHENIX Collaboration), “Measurement of jet-medium interactions via direct photon-hadron correlations in Au + Au√
and d +Au collisions at sNN = 200 GeV,” Phys. Rev. C 102, 054910 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Elliptic and triangular flow of (anti)deuterons in Pb-Pb collisions at sNN = 5.02 TeV,”
Phys. Rev. C 102, 055203 (2020).

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U. Acharya et al. (PHENIX Collaboration), “Production of b-b̄ at forward rapidity in p + p collisions at s = 510 GeV,” Phys. Rev. D
102, 092002 (2020).
√
U. Acharya et al. (PHENIX Collaboration), “Polarization and cross section of midrapidity J/ψ production in p + p collisions at s =510 GeV,” Phys. Rev. D 102, 072008 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “J/ψ elliptic and triangular flow in Pb-Pb collisions at sNN = 5.02 TeV,” J. High Energy
Phys. 2010, 141 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Azimuthal correlations of prompt D mesons with charged particles in pp and p-Pb√
collisions at sNN = 5.02 TeV,” Eur. Phys. J. C 80, 979 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Measurement of isolated photon-hadron correlations in sNN = 5.02 TeV pp and p-Pb
collisions,” Phys. Rev. C 102, 044908 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Measurement of the low-energy antideuteron inelastic cross section,” Phys. Rev. Lett.
125, 162001 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “J/ψ production as a function of charged-particle multiplicity in p-Pb collisions at sNN= 8.16 TeV,” J. High Energy Phys. 2009, 162 (2020).
√
S. Acharya et al. (ALICE Collaboration), “(Anti-)deuteron production in pp collisions at s = 13 TeV,” Eur. Phys. J. C 80, 889 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Constraining the chiral magnetic eﬀect with charge-dependent azimuthal correlations√in Pb-Pb collisions at sNN = 2.76 and 5.02 TeV,” J. High Energy Phys. 2009, 160 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Z-boson production in p-Pb collisions at sNN = 8.16 TeV and Pb-Pb collisions at√
sNN = 5.02 TeV,” J. High Energy Phys. 2009, 076 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Multiplicity dependence of J/ψ production at midrapidity in pp collisions at s =13 TeV,” Phys. Lett. B 810, 135758 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “K ∗ (892)0 and ϕ(1020) production at midrapidity in pp collisions at s = 8 TeV,” Phys.
Rev. C 102, 024912 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Multiplicity dependence of K ∗ (892)0 and ϕ(1020) production in pp collisions at s =13 TeV”, Phys. Lett. B 807, 135501 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Global baryon number conservation encoded in net-proton fluctuations measured in√
Pb-Pb collisions at sNN = 2.76 TeV,” Phys. Lett. B 807, 135564 (2020).
U. A. Acharya et al. (PHENIX √Collaboration), “Measurement of charged pion double spin asymmetries at midrapidity in longitudinallypolarized p + p collisions at s = 510 GeV,” Phys. Rev. D 102, 032001 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Multiplicity dependence of π, K, and p production in pp collisions at s = 13 TeV,”
Eur. Phys. J. C 80, 693, (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Measurement of nuclear eﬀects on ψ(2S) production in p-Pb collisions at sNN =8.16 TeV,” J. High Energy Phys. 2007, 237 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Probing the eﬀects of strong electromagnetic fields with charge-dependent directed flowin Pb-Pb collisions at the LHC,” Phys. Rev. Lett. 125, 022301 (2020).
U. Acharya et al. (PHENIX Collaboration), “Measurement of J/ψ at forward and backward rapidity in p + p, p + Al, p + Au, and 3 He + Au√
collisions at sNN = 200 GeV,” Phys. Rev. C 102, 014902 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Production of ω mesons in pp collisions at s = 7 TeV,” Eur. Phys. J. C 80, 1130
(2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Evidence of spin-orbital angular momentum interactions in relativistic heavy-ion collisions,” Phys. Rev. Lett. 125, 012301 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Non-linear flow modes of identified particles in Pb-Pb collisions at sNN = 5.02 TeV,”
J. High Energy Phys. 2006, 147 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Investigation of the p-Σ0 interaction via femtoscopy in pp collisions,” Phys. Lett. B
805, 135419 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Centrality and transverse momentum dependence of inclusive J/ψ production at midra√
pidity in Pb-Pb collisions at sNN = 5.02 TeV,” Phys. Lett. B 805, 135434 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Measurement of the (anti-)3 He elliptic flow in Pb-Pb collisions at sNN = 5.02 TeV,”
Phys. Lett. B 805, 135414 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at√
sNN = 5.02 TeV,” J. High Energy Phys. 2006, 035 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Jet-hadron correlations measured relative to the second order event plane in Pb-Pb√
collisions at sNN = 2.76 TeV,” Phys. Rev. C 101, 064901 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Higher harmonic non-linear flow modes of charged hadrons in Pb-Pb collisions at sNN= 5.02 TeV,”J. High Energy Phys. 2005, 085 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Longitudinal and azimuthal evolution of two-particle transverse momentum correlations√in Pb-Pb collisions at sNN = 2.76 TeV,”Phys. Lett. B 804, 135375 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity√
in pp and Pb-Pb collisions at sNN = 5.02 TeV,” Phys. Lett. B 804, 135377 (2020).
Shreyasi Acharya et al. (ALICE Collaboration), “Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp- 353 -

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collisions at sNN = 5.02 TeV,” Phys. Rev. C 101, 044907 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Production of (anti-)3 He and (anti-)3 H in p-Pb collisions at sNN = 5.02 TeV,” Phys.
Rev. C 101, 044906 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Underlying event properties in pp collisions at s = 13 TeV,” J. High Energy Phys.
2004, 192 (2020).
√
Shreyasi Acharya et al. (ALICE Collaboration), “Global polarization of Λ Λ hyperons in Pb-Pb collisions at sNN = 2.76 and 5.02 TeV,”
Phys. Rev. C 101, 044611 (2020).
A. Kastberg, B. K. Sahoo, T. Aoki, Y. Sakemi, and B. P. Das, “Analysis of an optical lattice methodology for detection of atomic parity
nonconservation,” Symmetry 12, 974 (2020).
N. Shimizu, Y. Tsunoda, Y. Utsuno, and T. Otsuka, “The variational approach with the superposition of the symmetry-restored quasiparticle vacua for nuclear shell-model calculaions,” Phys. Rev. C 103, 014312 (2021).
K. Kaneko, N. Shimizu, T. Mizusaki, and Y. Sun, “Triple enhancement of quasi-SU(3) quadrupole collectivity in strontium-zirconium
N Z isotopes,” Phys. Lett. B 817, 136286 (2021).
S. Go, E. Ideguchi, R. Yokoyama, F. Azaiez, N. Aoi, K. Furutaka, Y. Hatsukawa, A. Kimura, K. Kisamori, M. Kobayashi, F. Kitatani, M. Koizumi, H. Harada, I. Matea, S. Michimasa, H. Miya, S. Nakamura, M. Niikura, H. Nishibata, N. Shimizu, S. Shimoura,
T. Shizuma, M. Sugawara, D. Suzuki, M. Takaki, Y. Utsuno, Y. Toh, D. Verney, and A. Yagi, “High-spin states in 35 S,” Phys. Rev. C
103, 034327 (2021).
N. Kitamura, K. Wimmer, N. Shimizu, V. M. Bader, C. Bancroft, D. Barofsky, T. Baugher, D. Bazin, J. S. Berryman, V. Bildstein, A. Gade,
N. Imai, T. Koll, C. Langer, J. Lloyd, E. Lunderberg, G. Perdikakis, F. Recchia, T. Redpath, S. Saenz, D. Smalley, S. R. Stroberg,
J. A. Tostevin, N. Tsunoda, Y. Utsuno, D. Weisshaar, and A. Westerberg “Structure of 30 Mg explored via in-beam γ-ray spectroscopy,”
Phys. Rev. C 102, 054318 (2020).
N. Tsunoda, T. Otsuka, K. Takayanagi, N. Shimizu, T. Suzuki, Y. Utsuno, and H. Ueno, “The impact of nuclear shape on the emergenceof the neutron dripline,” Nature 587, 66 (2020).
K. Kaneko, N. Shimizu, T. Mizusaki, Y. Sun, “Quasi-SU(3) coupling of (1h11/2 , 2 f7/2 ) across the N = 82 shell gap: Enhanced E2collectivity and shape evolution in Nd isotopes,” Phys. Rev. C 103, L021301 (2021).
N. Shimizu, T. Togashi, and Y. Utsuno, “Gamow-Teller transitions of neutron-rich N = 82 and N = 81 nuclei by shell-model calculations,”
Prog. Theor. Exp. Phys. 2021, 033D01 (2021).
K. Yanase and N. Shimizu, “Large-scale shell-model calculations of nuclear Schiﬀ moments of 129 Xe and 199 Hg,” Phys. Rev. C 102,065502 (2020).
K. Yanase, “Screening of nucleon electric dipole moments in atomic systems,” Phys. Rev. C 103, 035501 (2021).
P. A. S0̈derstr0̈m, L. Capponi, E. Açiksöz, T. Otsuka, N. Tsoneva, Y. Tsunoda, D. L. Balabanski, N. Pietralla, G. L. Guardo, D. Lattuada,
H. Lenske, C. Matei, D. Nichita, A. Pappalardo, and T. Petruse, “Electromagnetic character of the competitive γγ/γ-decay from
137m
Ba,”
N. Mărginean, D. Little, Y. Tsunoda, S. Leoni, R. V. F. Janssens, B. Fornal, T. Otsuka, C. Michelagnoli, L. Stan, F. C. L. Crespi,
C. Costache, R. Lica, M. Sferrazza, A. Turturica, A. D. Ayangeakaa, K. Auranen M. Barani, P. C. Bender, S. Bottoni, M. Boromiza,
A. Bracco, S. Călinescu, C. M. Campbell, M. P. Carpenter, P. Chowdhury, M. Ciemala, N. Cieplicka-Oryǹczak, D. Cline, C. Clisu,
H. L. Crawford, I. E. Dinescu, J. Dudouet, D. Filipescu, N. Florea, A. M. Forney, S. Fracassetti, A. Gade, I. Gheorghe, A. B. Hayes,
I. Harca, J. Henderson, A. Ionescu, L. W. Iskra, M. Jentschel, F. Kandzia, Y. H. Kim, F. G. Kondev, G. Korschinek, U. Köster,
Krishichayan, M. Krzysiek, T. Lauritsen, J. Li, R. Mărginean, E. A. Maugeri, C. Mihai, R. E. Mihai, A. Mitu, P. Mutti, A. Negret,
C. R. Niţă, A. Olăcel, A. Oprea, S. Pascu, C. Petrone, C. Porzio, D. Rhodes, D. Seweryniak, D. Schumann, C. Sotty, S. M. Stolze,
R. Şuvăilă, S. Toma, S. Ujeniuc, W. B. Walters, C. Y. Wu, J. Wu, S. Zhu, and S. Ziliani, “Shape coexistence at zero spin in 64Ni driven
by the monopole tensor interaction,” Phys. Rev. Lett. 125, 102502 (2020).
F. L. Bello Garrote, E. Sahin, Y. Tsunoda, T. Otsuka, A. Görgen, M. Niikura, S. Nishimura, G. de Angelis, G. Benzoni, A. I. Morales,
V. Modamio, Z. Y. Xu, H. Baba, F. Browne, A. M. Bruce, S. Ceruti, F. C. L. Crespi, R. Daido, M. -C. Delattre, P. Doornenbal,
Zs. Dombradi, Y. Fang, S. Franchoo, G. Gey, A. Gottardo, K. Hadyńska-Klȩk, T. Isobe, P. R. John, H. S. Jung, I. Kojouharov, T. Kubo,
N. Kurz, I. Kuti, Z. Li, G. Lorusso, I. Matea, K. Matsui, D. Mengoni, T. Miyazaki, S. Momiyama, P. Morfouace, D. R. Napoli,
F. Naqvi, H. Nishibata, A. Odahara, R. Orlandi, Z. Pate, S. Rice, H. Sakurai, H. Schaﬀner, L. Sinclair, P. -A. Söderström, D. Sohler,
I. G. Stefan, T. Sumikama, D. Suzuki, R. Taniuchi, J. Taprogge, Zs. Vajta, J. J. Valiente-Dobón, H. Watanabe, V. Werner, J. Wu, A. Yagi,
M. Yalcinkaya, R. Yokoyama, and K. Yoshinaga, “β decay of 75Ni and the systematics of the low-lying level structure of neutron-rich
odd-A Cu isotopes,” Phys. Rev. C 102, 034314 (2020).
C. Porzio, C. Michelagnoli, N. Cieplicka-Oryńczak, M. Sferrazza, S. Leoni, B. Fornal, Y. Tsunoda, T. Otsuka, S. Bottoni, C. Costache,
F. C. L. Crespi, L. W. Iskra, M. Jentschel, F. Kandzia, Y. -H. Kim, U. Köster, N. Mărginean, C. Mihai, P. Mutti, and A. Turturică,“Detailed low-spin spectroscopy of 65Ni via neutron capture reaction,” Phys. Rev. C 102, 064310 (2020).
Y. Tsunoda and T. Otsuka, “Triaxial rigidity of 166 Er and its Bohr-model realization,” Phys. Rev. C 103, L021303 (2021).
A. Kundu, Md. S. R. Laskar, R. Palit, R. Raut, S. Santra, N. Shimizu, T. Togashi, E. Ideguchi, H. Pai, S. Ali, F. S. Babra, R. Banik,
S. Bhattacharya, B. Das, P. Dey, R. Donthi, A. Goswami, S. Jadhav, G. Mukherjee, B. S. Naidu, L. P. Singh, S. Rajbanshi, H. P. Sharma,
S. S. Tiwary, and A. T. Vazhappilly, “New lifetime measurement for the 2+1 level of 112 Sn by the Doppler shift attenuation method,”Phys. Rev. C 103, 034315 (2021).

[Review Articles]
H. Yamaguchi, D. Kahl, and S. Kubono, “CRIB: the low energy in-flight RI beam separator,” Nuclear Physics News International 30,
No. 2, 21–27 (2020).

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VI. RNC ACTIVITIESRIKEN Accel. Prog. Rep. 54 (2021)[Proceedings]
L. Lamia, R. G. Pizzone, M. Mazzocco, S. Hayakawa, M. La Cognata, C. A. Bertulani, S. Cherubini, G. D’Agata, G. L. Guardo,
M. Gulino, I. Indelicato, G. G. Rapisarda, S. Romano, M. L. Sergi, R. Spartà, C. Spitaleri, and A. Tumino, J. Phys. Conf. Ser. 1643,
012096 (2020).
A. Inoue, A. Tamii, P. Chan, S. Hayakawa, N. Kobayashi, Y. Maeda, K. Nonaka, T. Shima, H. Shimizu, D. T. Tran, X. Wang, H. Yamaguchi, L. Yang, and Z. Yang, J. Phys. Conf. Ser. 1643, 012049 (2020).
H. Yamaguchi, S. Hayakawa, N. Ma, H. Shimizu, L. Yang, D. Kahl, K. Abe, T. Suhara, N. Iwasa, A. Kim, D. Kim, S. Cha, M. Kwag,
J. Lee, E. Lee, K. Chae, Y. Wakabayashi, N. Imai, N. Kitamura, P. Lee, J. Moon, K. Lee, C. Akers, H. Jung, N. Duy, L. Khiem, C. Lee,
S. Cherubini, M. Gulino, C. Spitaleri, G. Rapisarda, L. Cognata, L. Lamia, S. Romano, A. Coc, N. de Sereville, F. Hammache, G. Kiss,
S. Bishop, T. Teranishi, T. Kawabata, Y. Kwon, and D. Binh, J. Phys. Conf. Ser. 1643, 012069 (2020).
M. Mazzocco, N. Keeley, A. Boiano, C. Boiano, M. L. Commara, A. Lagni, C. Manea, C. Parascandolo, D. Pierroutsakou, C. Signorini,
E. Strano, D. Torresi, H. Yamaguchi, D. Kahl, L. Acosta, D. Meo, J. P. Fernandez-Garcia, T. Glodariu, J. Grebosz, A. Guglielmetti,
Y. Hirayama, N. Imai, H. Ishiyama, N. Iwasa, S. C. Jeong, H. M. Jia, Y. H. Kim, S. Kimura, S. Kubono, G. L. Rana, C. J. Lin, P. Lotti,
G. Marquı́nez-Duran, I. Martel, H. Miyatake, M. Mukai, T. Nakao, M. Nicoletto, A. Pakou, K. Rusek, Y. Sakaguchi, A. M. SanchezBenitez, T. Sava, O. Sgouros, V. Soukeras, F. Soramel, E. Stiliaris, L. Stroe, T. Teranishi, N. Toniolo, Y. Wakabayashi, Y. X. Watanabe,
L. Yang, Y. Y. Yang, and H. Q. Zhang, J. Phys. Conf. Ser. 1643, 012096 (2020).
H. Yamaguchi, S. Hayakawa, L. Yang, H. Shimizu, D. Kahl, T. Suhara, N. Iwasa, S. M. Cha, M. S. Kwag, J. H. Lee, E. J. Lee, K. Y. Chae,
A. Kim, D. H. Kim, Y. Wakabayashi, N. Imai, N. Kitamura, P. Lee, J. Y. Moon, K. B. Lee, C. Akers, N. N. Duy, L. H. Khiem, andC. S. Lee, JPS Conf. Proc. 32, 010055 (2020).
S. Hayakawa, L. Lamia, C. Spitaleri, C. A. Bertulani, S. Q. Hou, M. L. Cognata, M. Mazzocco, R. G. Pizzone, D. Pierroutsakou,
S. Romano, M. L. Sergi, and A. Tumino, JPS Conf. Proc. 32, 010058 (2020).
R. G. Pizzone, G. D’Agata, I. Indelicato, M. L. Cognata, P. Figuera, G. L. Guardo, S. Hayakawa, L. Lamia, M. Lattuada, M. Milin,
G. G. Rapisarda, S. Romano, M. L. Sergi, N. Skukan, N. Soic, C. Spitaleri, and A. Tumino, JPS Conf. Proc. 32, 010062 (2020).
A. Tumino, C. Spitaleri, M. L. Cognata, S. Cherubini, G. L. Guardo, M. Gulino, S. Hayakawa, I. Indelicato, L. Lamia, H. Petrascu,
R. G. Pizzone, S. M. R. Puglia, G. G. Rapisarda, S. Romano, M. L. Sergi, R. Sparta, and L. Trache, Proceedings of 13th International
Conference on Nucleus-Nucleus, JPS Conf. Proc. 32, 010059 (2020).
Y. Kotaka, Y. Ohshiro, H. Yamaguchi, N. Imai, Y. Sakemi, S. Shimoura, T. Nagatomo, J. Ohnishi, T. Nakagawa, M. Kase, A. Goto,
K. Hatanaka, and H. Muto, “Development of the calculation method of injection beam trajectory of RIKEN AVF Cyclotron with
4D emittance measured by the developed pepper-pot emittance monitor,” Proceedings of the 8th International Beam Instrumentation
Conference (IBIC2019), JACoW-IBIC2019-TUPP022 (2020).
Y. Sakemi, T. Aoki, R. Calabrese, H. Haba, K. Harada, T. Hayamizu, Y. Ichikawa, K. Jungmann, A. Kastberg, Y. Kotaka, Y. Matsuda,
H. Nagahama, K. Nakamura, M. Otsuka, N. Ozawa, K. S. Tanaka, A. Uchiyama, H. Ueno, and L. Willmann, “Fundamental physics
with cold radioactive atoms,” AIP Conf. Proc. 2319, 080020 (2021).

Presentations[International Conferences/Workshops]
N. Imai (invited), “Preparation status of NP1912-SHARAQ18,” OEDO/SHARAQ Collabotration Meeting 2020, On-line, September 7,
2020.
S. Michimasa (invited), “Mapping background X-rays from OEDO RFD,” OEDO/SHARAQ Collabotration Meeting 2020, On-line,
September 7, 2020.
M. Dozono (invited), “Probing exotic structures of highly excited nuclei: OEDO-SHARAQ activities,” RIBF User Meeting, On-line,
September 8–10, 2020.
S. Michimasa (invited), “Development of energy-degraded RI beam and expansion of nuclear reaction studies,” Symposium of Nuclear
Data 2020 (hybrid), Saitama, Japan, November 26–27, 2020.
S. Ota (invited), “Study of nuclear matter property via nuclear scattering and reactions,” JPS/NRF/NSFC A3 Foresight Program “Nuclear
Physics in the 21st Century” Joint Annual Meeting, Huizhou, China and On-line, November 18–19, 2020.
H. Yamaguchi (oral), “Activities at the low-energy RI beam separator CRIB,” RIBF Users Meeting 2020 (on-line), Saitama, Japan,
Sepember 8–10, 2020.
H. Yamaguchi (oral), “Overview of alpha resonant scattering experiments at CRIB,” International mini-workshop on “Physics in resonant
reaction induced by low-energy RI beam”, Web Meeting Hosted by CNS, the University of Tokyo/IBS Center for Exotic Nuclear
Studies/Department of Pure and Applied Physics, Kansai University/Research Center for Nuclear Physics (RCNP), Osaka, Japan,
February 22, 2021.
N. R. Ma (oral), “Primary result of 14 O + α clustering study at CRIB,” International mini-workshop on “Physics in resonant reaction
induced by low-energy RI beam”, Web Meeting Hosted by CNS, the University of Tokyo/IBS Center for Exotic Nuclear Studies/Department of Pure and Applied Physics, Kansai University/Research Center for Nuclear Physics (RCNP), Osaka, Japan, February
22, 2021.
D. Sekihata (oral) for the ALICE Collaboration, “Low-mass dielectron measurements in pp, p-Pb and Pb-Pb collisions with ALICE at
the LHC,” 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, Online, June 2020.
T. Hayamizu (oral), “Development of ultracold francium atomic sources towards the permanent EDM search,” Yamada Conference
LXXII: The 8th Asia-Pacific Conference on Few-Body Problems in Physics (APFB2020), Kanazawa, Japan, March 4, 2021.
N. Shimizu (oral), “Data-driven approaches in nuclear shell-model calculations,” Nuclear Data Symposium 2020 (RIKEN Nishina Cen-

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Y. Tsunoda (invited), “Structure of medium-mass nuclei studied by Monte Carlo shell model calculations,” The RIBF Users Meeting
2020, Online, September 9, 2020.
Y. Tsunoda (oral), “Nuclear shapes and collective motions in the region of Sm,” 12th Symposium on Discovery, Fusion, Creation of New
Knowledge by Multidisciplinary Computational Sciences, Online, October 6, 2020.
K. Yanase (oral), “Large-scale shell-model calculations of nuclear Schiﬀ moments of 129Xe and 199Hg,” Beyond-the-Standard-Model
Physics with Nucleons and Nuclei (INT 20-2b), online, July 23, 2020.

[Domestic Conferences/Workshops]
今井伸明 (招待講演), 「不安定核の中性子捕獲率測定プロジェクト」, 研究会「星の錬金術から銀河考古学へ」, 東京都三鷹市（国立天文台）, 2020 年 10 月 26–29 日.
下浦亨（招待講演）, “Direct reactions as quantum probes of nuclear system,” Symposium on “JPS nuclear physics and physical review
C,” 日本物理学会 2020 年秋季大会, オンライン, 2020 年 9 月 14 日–17 日.
花井周太郎 (口頭発表), 「分割電極型 PPAC(SR-PPAC) における位置較正手法の開発」, 日本物理学会 2020 年秋季大会, on-line, 2020
年 9 月 14 日–17 日.
道正新一郎（口頭発表）, 「中性子過剰 62 Ti 核および近傍核の質量測定」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年
3 月 12–15 日.
堂園昌伯（口頭発表）, 「(4 He, 6 He) 反応による錫同位体の対振動状態の研究」, 日本物理学会 第 76 回年次大会, オンライン講演,
2021 年 3 月 12–15 日.
郡司卓（招待講演）, “ALICE upgrade and physics topics (II),” 第４回クラスター階層領域研究会, オンライン講演, 2020 年 5 月 28 日.
関畑大貴（口頭発表）, 「機械学習を用いた ALICE-TPC 検出器内部の空間電荷効果補正」, MPGD & Active 媒質 TPC 研究会 2020,
兵庫県神戸市（神戸大学+オンライン）, 2020 年 12 月.
関畑大貴 for the ALICE Collaboration（口頭発表）, 「機械学習を用いた ALICE-TPC 検出器内部の空間電荷効果補正」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.
関畑大貴（基調講演）, 「核子対あたり重心系エネルギー 5.02 における中性中間子と直接光子測定」(受賞記念企画公演), 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.
関口裕子（口頭発表） for the ALICE Collaboration, 「LHC-ALICE 実験を用いた小さな衝突系における方位角異方性の擬ラピディ
ティ依存性測定」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.
清水夏樹（口頭発表） for the ALICE Collaboration, 「ALICE 実験における Run2 全統計を用いたエキゾチックハドロン探索」,日
本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.
佐藤幹（口頭発表）, 「高効率フランシウム原子線のための吸着防止コーティング材の評価」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.
君塚大樹（口頭発表）, 「狭線幅光会合を用いた極低温 Sr2 分子生成のための高安定な光源開発」, 日本物理学会 第 76 回年次大会,
オンライン講演, 2021 年 3 月 12–15 日.
池田英彦（口頭発表）, 「電場の量子センシングに向けた Sr リドベルグ原子の分光」, 日本物理学会 第 76 回年次大会, オンライン
講演, 2021 年 3 月 12–15 日.
小澤直也（口頭発表）, 「フランシウム原子の電気双極子能率探索のための表面電離イオン源の開発」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.
清水則孝（口頭発表）, 「準粒子真空基底によるモンテカルロ殻模型の拡張」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021
年 3 月 12–15 日.
角田佑介（口頭発表）, 「モンテカルロ殻模型による二重ベータ崩壊の核行列要素の計算」, 新学術領域「地下宇宙」2020 年度領域研究会, オンライン講演, 2020 年 6 月 2 日.
角田佑介（口頭発表）, 「モンテカルロ殻模型による二重ベータ崩壊の核行列要素の計算」, 日本物理学会 第 76 回年次大会, オンラ
イン講演, 2021 年 3 月 12–15 日.
柳瀬宏太（口頭発表）, 「原子核殻模型による電気双極子モーメントの精密計算」, 「富岳で加速する素粒子・原子核・宇宙・惑星」
シンポジウム, オンライン講演, 2021 年 1 月 28 日.
柳瀬宏太（口頭発表）, 「清水則孝, 原子核殻模型による電気双極子モーメントの精密計算」, 日本物理学会 第 76 回年次大会, オンライン講演, 2021 年 3 月 12–15 日.

[Seminars]
N. Kitamura (oral), “In-beam spectroscopy of 30 Mg: structural evolution approaching the island of inversion,” CNS Seminar, On-line,
July 29, 2020.
S. Koyama (oral), “Spectroscopy of resonance states in light proton-rich nuclei via missing mass method,” CNS Seminar, On-line, August
7, 2020.
鎌倉惠太 (oral), 「東大 HyperECR イオン源の現状」, 第 19 回 AVF 合同打ち合わせ, 宮城県仙台市（東北大学）, 2021 年 3 月 10 日.
小高康照 (oral), 「理研 AVF のビーム輸送系最適化の現状」, 第 19 回 AVF 合同打ち合わせ, 宮城県仙台市（東北大学）, 2021 年 3
月 10 日.

Awards
関畑大貴, 第 15 回日本物理学会若手奨励賞 (実験核物理領域).
関畑大貴, 第 27 回原子核談話会新人賞.

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Press Releases
道正新一郎, 小林幹, 下浦享, 上坂友洋, 井手口栄治, 西村太樹, 「チタン同位体でおこる新たな安定化現象を発見—質量測定で迫る原子核存在限界」, 2020 年 9 月 16 日.
大塚孝治, 角田直文, 高柳和雄, 清水則孝, 鈴木俊夫, 宇都野穣, 吉田聡太, 上野秀樹, 「原子核の存在限界（中性子ドリップライン）の新たなメカニズム」, 2020 年 11 月 5 日, https://www.s.u-tokyo.ac.jp/ja/press/2020/7074/ .

Others[東京大学理学部ニュース]
道正新一郎, 「質量から探る原子核の秩序と存在限界」, 学部生に伝える研究最前線, 東京大学理学部ニュース 2021 年 1 月号.

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