NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = N.Shimizu Found 103 matches. Showing 1 to 100. [Next]2024AJ01 Phys.Rev. C 109, 014305 (2024) S.Ajayi, V.Tripathi, E.Rubino, S.Bhattacharya, L.T.Baby, R.S.Lubna, C.Benetti, C.Wibisono, M.B.Wheeler, S.L.Tabor, Y.Utsuno, N.Shimizu, J.M.Allmond Observation of collective modes of excitations in 59Co, 59Ni, and 61Co and the influence of the g9/2 orbital
doi: 10.1103/PhysRevC.109.014305
2024LI18 Phys.Rev. C 109, 034312 (2024) B.D.Linh, A.Corsi, A.Gillibert, A.Obertelli, P.Doornenbal, C.Barbieri, T.Duguet, M.Gomez-Ramos, J.D.Holt, B.S.Hu, T.Miyagi, A.M.Moro, P.Navratil, K.Ogata, S.Peru, N.T.T.Phuc, N.Shimizu, V.Soma, Y.Utsuno, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.B.Gerst, J.Gibelin, K.I.Hahn, N.T.Khai, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.T.Wang, V.Werner, X.Xu, Y.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti Onset of collectivity for argon isotopes close to N=32
doi: 10.1103/PhysRevC.109.034312
2024PA05 Phys.Rev. C 109, 014310 (2024) D.Patel, P.C.Srivastava, N.Shimizu, Y.Utsuno Systematic shell-model study of 99-129Cd isotopes and isomers in neutron-rich 127-131In isotopes
doi: 10.1103/PhysRevC.109.014310
2024SH01 Phys.Rev. C 109, 014302 (2024) T.Shizuma, M.Omer, T.Hayakawa, F.Minato, S.Matsuba, S.Miyamoto, N.Shimizu, Y.Utsuno Parity assignment for low-lying dipole states in 58Ni
doi: 10.1103/PhysRevC.109.014302
2024UT01 Phys.Rev. C 109, 014617 (2024) H.Utsunomiya, S.Goriely, M.Kimura, N.Shimizu, Y.Utsuno, G.M.Tveten, T.Renstrom, T.Ari-izumi, S.Miyamoto Photoneutron emission cross sections for 13C
doi: 10.1103/PhysRevC.109.014617
2023BH02 Phys.Rev. C 107, 054311 (2023) S.Bhattacharya, V.Tripathi, E.Rubino, S.Ajayi, L.T.Baby, C.Benetti, R.S.Lubna, S.L.Tabor, J.Doring, Y.Utsuno, N.Shimizu, J.M.Allmond, G.Mukherjee Coexistence of single-particle and collective excitation in 61Ni NUCLEAR REACTIONS 50Ti(14C, 3n)61Ni, E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using a Compton-suppressed six clover detectors and three single-crystal HPGe detectors at the Superconducting Accelerator Facility at FSU. 61Ni; deduced high-spin levels, J, π, multipolarities, bands, magnetic rotational (shears) bands. Comparison with semiclassical model (SCM) for shears bands, and shell-model calculations for other bands. NUCLEAR STRUCTURE 61Ni; calculated high-spin levels, J, π, occupation number for different orbitals, aligned angular momenta of bands using shell model with GXPF1Br+VMU (modified) interaction. Systematics of bands in 59,61,63Ni, 59Fe.
doi: 10.1103/PhysRevC.107.054311
2023CH23 Phys.Rev. C 107, 054306 (2023) J.Chen, M.Liu, C.Yuan, S.Chen, N.Shimizu, X.Sun, R.Xu, Y.Tian Shell-model-based investigation on level density of Xe and Ba isotopes NUCLEAR STRUCTURE 131,132,133,134Sn, 132,133,134,135Sb, 133,134,135,136Te, 134,135,136,137I, 135,136,137,138Xe, 136,137,138,139Cs, 137,138,139,140Ba; calculated one-neutron separation energy S(n). 132,133,134Sn, 132,133,134,135Sb, 134,135,136Te, 135,136,137I, 136,137,138Xe, 137,138,139Cs, 138,139,140Ba; calculated two-neutron separation energies S(2n). 134, ,136,138Xe, 134,136,138,140Ba, 128,129,130,134,135,136Sn, 131,135Sb, 132,134,136Te, 133,135,137I, 135,137,139Cs, 139La; calculated levels, J, π. 133,134,135,136,137Xe, 134,135,136,137,138,139Ba; calculated nuclear level densities (NLD), cumulative number of levels spin distributions. 134Te, 135I, 136Xe, 137Cs, 138Ba, 139La; calculated effective single particle energy for proton and neutron orbits with and without the consideration of tensor part in two-body matrix elements. 133,134,135,136,137Xe; calculated spin distribution , parity ratios, spin cut-off parameter. Configuration-interaction shell model with a unified effective nuclear force. Comparison to experimental data.
doi: 10.1103/PhysRevC.107.054306
2023CH26 Phys.Lett. B 843, 138025 (2023) S.Chen, F.Browne, P.Doornenbal, J.Lee, A.Obertelli, Y.Tsunoda, T.Otsuka, Y.Chazono, G.Hagen, J.D.Holt, G.R.Jansen, K.Ogata, N.Shimizu, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti Level structures of 56, 58Ca cast doubt on a doubly magic 60Ca NUCLEAR REACTIONS 1H(57Sc, 2p)56Ca, E=209 MeV/nucleon; 1H(59Sc, 2p)58Ca, E=199 MeV/nucleon, [57,59Sc secondary beams from 9Be(70Zn, X), E=345 MeV/nucleon, followed by separation and identification of ions of interest using the BigRIPS separator at RIBF-RIKEN facility]; measured reaction residues of 56Ca and 58Ca through identification by the SAMURAI spectrometer, Doppler-corrected Eγ, Iγ, (particle)γ-coin using the DALI2+ array using MINOS liquid hydrogen target. 56,58Ca; deduced energies of the first 2+ levels. Comparison with shell-model calculations with the GXPF1B Hamiltonian in full pf model space, and the state-of-the-art ab initio approaches: VS-IMSRG method, and CC calculations. Systematics of energies of the first 2+ states and S(2n) from experiment (N=22-36) and theory in N=22-54 Ca isotopes.
doi: 10.1016/j.physletb.2023.138025
2023II01 Phys.Rev.Lett. 130, 012501 (2023) S.Iimura, M.Rosenbusch, A.Takamine, Y.Tsunoda, M.Wada, S.Chen, D.S.Hou, W.Xian, H.Ishiyama, S.Yan, P.Schury, H.Crawford, P.Doornenbal, Y.Hirayama, Y.Ito, S.Kimura, T.Koiwai, T.M.Kojima, H.Koura, J.Lee, J.Liu, S.Michimasa, H.Miyatake, J.Y.Moon, S.Naimi, S.Nishimura, T.Niwase, A.Odahara, T.Otsuka, S.Paschalis, M.Petri, N.Shimizu, T.Sonoda, D.Suzuki, Y.X.Watanabe, K.Wimmer, H.Wollnik Study of the N=32 and N=34 Shell Gap for Ti and V by the First High-Precision Multireflection Time-of-Flight Mass Measurements at BigRIPS-SLOWRI ATOMIC MASSES 55Sc, 56,58Ti, 56,57,58,59V; measured TOF; deduced masses, nonexistence of the N=34 empirical two-neutron shell gaps for Ti and V, and the enhanced energy gap in Ca. Comparison with new Monte Carlo shell model calculations. RIKEN's Radioactive Isotope Beam Factory (RIBF).
doi: 10.1103/PhysRevLett.130.012501
2023IS02 Phys.Rev. C 107, 024306 (2023) Y.Ishibashi, A.Gladkov, Y.Ichikawa, A.Takamine, H.Nishibata, T.Sato, H.Yamazaki, T.Abe, J.M.Daugas, T.Egami, T.Fujita, G.Georgiev, K.Imamura, T.Kawaguchi, W.Kobayashi, Y.Nakamura, A.Ozawa, M.Sanjo, N.Shimizu, D.Tominaga, L.C.Tao, K.Asahi, H.Ueno Nuclear magnetic moment of the neutron-rich nucleus 21O NUCLEAR MOMENTS 21O; measured Iβ, b(θ), β-NMR spectra; deduced g-factor, J and π of the ground state as 5/2+ based on comparison to single-particle g-factors, configuration, magnetic moment for the 5/2+ ground state. Comparison to shell-model predictions using the USD, YSOX, and SDPF-M interactions and to random phase approximation (RPA) based calculations. Measured with β-ray detected nuclear magnetic resonance (β-NMR) spectroscopy. Spin-polarized 21O beam produced in 9Be(22Ne, X), E=70 MeV/nucleon reaction, followed by separation of 21O fragments using RIPS separator at RIKEN.
doi: 10.1103/PhysRevC.107.024306
2023KA05 Phys.Rev.Lett. 130, 052501 (2023) K.Kaneko, Y.Sun, N.Shimizu, T.Mizusaki Quasi-SU(3) Coupling Induced Oblate-Prolate Shape Phase Transition in the Casten Triangle NUCLEAR STRUCTURE 122,124,126,128,130,132Te, 124,126,128,130,132,134Xe, 126,128,130,132,134,136Ba; calculated energy levels, J, π, B(E2), quadrupole moments, potential energy surfaces using HFB+GCM with the PMMU Hamiltonian; deduced hidden symmetries from the vast shell-model configurations, microscopical insights into the empirical symmetry triangle.
doi: 10.1103/PhysRevLett.130.052501
2023KO15 Nature(London) 620, 965 (2023) Y.Kondo, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.A.Douma, A.Ekstrom, Z.Elekes, C.Forssen, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, G.Hagen, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, W.G.Jiang, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.Najafi, T.Nakamura, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, K.Ogata, F.de Oliveira Santos, N.A.Orr, H.Otsu, T.Otsuka, T.Ozaki, V.Panin, T.Papenbrock, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Y.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, N.Shimizu, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, Z.H.Sun, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, N.Tsunoda, T.Uesaka, Y.Utsuno, I.Vernon, H.Wang, Z.Yang, M.Yasuda, K.Yoneda, S.Yoshida First observation of 28O NUCLEAR REACTIONS H(29F, X)27O/28O, E=235 MeV/nucleon; measured reaction products; deduced yields. The hydrogen target was surrounded by the MINOS Time Projection Chamber, SAMURAI spectrometer, RIKEN RI Beam Factory. RADIOACTIVITY 28O(4n), 27O(3n); measured decay products, En, In; deduced decay energy spectra and schemes from the measured momenta using the invariant-mass technique, resonance parameters. Comparison with the large-scale shell-model calculations using the new chiral effective field theory (EEdf3) interaction.
doi: 10.1038/s41586-023-06352-6
2023PA29 Nucl.Phys. A1039, 122742 (2023) D.Patel, P.C.Srivastava, N.Shimizu Systematic shell-model study of 98-130Cd isotopes and 8+ isomeric states NUCLEAR STRUCTURE 98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Cd; calculated energy levels, J, π, B(E2), electric quadrupole and magnetic moments, isomeric states, energy surfaces. Comparison with available data.
doi: 10.1016/j.nuclphysa.2023.122742
2023RE02 Phys.Lett. B 838, 137704 (2023) A.Revel, J.Wu, H.Iwasaki, J.Ash, D.Bazin, B.A.Brown, J.Chen, R.Elder, P.Farris, A.Gade, M.Grinder, N.Kobayashi, J.Li, B.Longfellow, T.Mijatovic, J.Pereira, A.Poves, A.Sanchez, N.Shimizu, M.Spieker, Y.Utsuno, D.Weisshaar Large collectivity in 29Ne at the boundary of the island of inversion NUCLEAR REACTIONS 181Ta, 9Be(29Ne, 29Ne'), E=101 MeV/nucleon; measured reaction products, Eγ, Iγ. 29Ne; deduced γ-ray energies, partial level scheme, B(E2). Comparison with shell-model calculations using FSU, SDPF-M, SDPF-U-MIX and EEdf1 interactions. The GRETINA array, the TRIPLEX device, the S800 Spectrograph facilitates at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University.
doi: 10.1016/j.physletb.2023.137704
2023SU08 Phys.Rev. C 108, 014611 (2023) Neutrino-induced neutral- and charged-current reactions on 40Ar NUCLEAR REACTIONS 40Ar(ν, e), E=10-130 MeV; calculated σ(E), cumulative sum of the GT strength. 40Ar(ν, ν'), E=10-130 MeV; calculated neutral-current reaction σ(E) for the 1+ multipole, dependence of the σ(E) on the quenching factor. Calculations using shell model for Gamow-Teller transitions and random-phase approximation (RPA) for forbidden transitions. NUCLEAR STRUCTURE 40Ar; calculated B(M1) and B(GT) values.
doi: 10.1103/PhysRevC.108.014611
2023TS05 Phys.Rev. C 108, L021302 (2023) Y.Tsunoda, N.Shimizu, T.Otsuka Shape transition of Nd and Sm isotopes and the neutrinoless double-β-decay nuclear matrix element of 150Nd NUCLEAR STRUCTURE 142,144,146,148,150,152,154Nd, 144,146,148,150,152,154,156Sm; calculated levels, J, π, B(E2), quadrupole moment, potential energy surfaces. Quasiparticle vacua shell model. Comparison to experimental data. RADIOACTIVITY 150Nd(2β-); calculated nuclear matrix element for 0nββ-decay with with various short-range correlations, Jπ decomposition of nuclear matrix element.
doi: 10.1103/PhysRevC.108.L021302
2023WA18 Phys.Lett. B 843, 138038 (2023) H.Wang, M.Yasuda, Y.Kondo, T.Nakamura, J.A.Tostevin, K.Ogata, T.Otsuka, A.Poves, N.Shimizu, K.Yoshida, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, H.L.Crawford, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.Douma, Z.Elekes, P.Fallon, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.A.Najafi, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, N.A.Orr, H.Otsu, T.Ozaki, V.Panin, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, T.Uesaka, Z.Yang, K.Yoneda Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne NUCLEAR REACTIONS 1H(29Ne, np)28Ne, E=240 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, partial level scheme, J, π, one-neutron removal σ, parallel momentum distributions. Comparison with available data. The MINOS target was surrounded by the DALI2 array, the Radioactive Isotope Beam Factory (RIBF), operated by the RIKEN Nishina Center and the Center for Nuclear Study, University of Tokyo.
doi: 10.1016/j.physletb.2023.138038
2023YA13 Phys.Lett. B 841, 137897 (2023) K.Yanase, N.Shimizu, K.Higashiyama, N.Yoshinaga Correlations between nuclear Schiff moment and electromagnetic measurements NUCLEAR MOMENTS 129Xe, 199Hg; calculated the nuclear Schiff moments induced by the nucleon electric dipole moment using large-scale shell model; deduced the next-to-leading-order contribution arises from parity and time-reversal violation in the nucleus, that these secondary effects do not induce any significant disturbance to the correlation. Comparison with available data.
doi: 10.1016/j.physletb.2023.137897
2022ID01 Phys.Rev.Lett. 128, 252501 (2022) E.Ideguchi, T.Kibedi, J.T.H.Dowie, T.H.Hoang, M.Kumar Raju, N.Aoi, A.J.Mitchell, A.E.Stuchbery, N.Shimizu, Y.Utsuno, A.Akber, L.J.Bignell, B.J.Coombes, T.K.Eriksen, T.J.Gray, G.J.Lane, B.P.McCormick Electric Monopole Transition from the Superdeformed Band in 40Ca NUCLEAR REACTIONS 40Ca(p, p'), E<10 MeV; measured reaction products, Eγ, Iγ, X-rays; deduced γ-ray energies, energy levels, partial level scheme, electric monopole (E0) transition strengths, transition rates for 0+ states. Comparison with Large-scale shell-model (LSSM) calculations and systematics. The 14UD Pelletron tandem accelerator of the Heavy Ion Accelerator Facility at the Australian National University.
doi: 10.1103/PhysRevLett.128.252501
2022KI08 Phys.Rev. C 105, 034318 (2022) N.Kitamura, K.Wimmer, T.Miyagi, A.Poves, N.Shimizu, J.A.Tostevin, V.M.Bader, C.Bancroft, D.Barofsky, T.Baugher, D.Bazin, J.S.Berryman, V.Bildstein, A.Gade, N.Imai, T.Kroll, C.Langer, J.Lloyd, E.Lunderberg, F.Nowacki, G.Perdikakis, F.Recchia, T.Redpath, S.Saenz, D.Smalley, S.R.Stroberg, Y.Utsuno, D.Weisshaar, A.Westerberg In-beam γ-ray spectroscopy of 32Mg via direct reactions NUCLEAR REACTIONS 9Be(33Mg, n), E=99.6 MeV/nucleon; 9Be(34Si, 2p), E=94.8 MeV/nucleon; measured reaction products, Eγ, Iγ, γγ-coin; deduced inclusive and exclusive σ, momentum distribution, spectroscopic factors. 32Mg; deduced, levels, J, π, configurations, structure of ground-state rotational band. Comparison to shell-model calculations using SDPF-M, SDPF-U-MIX, EEdf1 and IMSRG interactions. Systematics of low-spin levels for N=20 isotones (32Mg, 34Si, 36S, 38Ar, 40Ca). GRETINA at NSCL-MSU.
doi: 10.1103/PhysRevC.105.034318
2022KI17 Phys.Rev. C 106, 034311 (2022) S.Kisyov, C.Y.Wu, J.Henderson, A.Gade, K.Kaneko, Y.Sun, N.Shimizu, T.Mizusaki, D.Rhodes, S.Biswas, A.Chester, M.Devlin, P.Farris, A.M.Hill, J.Li, E.Rubino, D.Weisshaar Structure of 126, 128Xe studied in Coulomb excitation measurements NUCLEAR REACTIONS 196Pt, 208Pb(126Xe, 126Xe'), (128Xe, 128Xe'), E(126Xe)=3.74 MeV/nucleon, E(128Xe)=3.81 MeV/nucleon; measured reaction products, Eγ, Iγ, (126Xe)γ-coin, (128Xe)γ-coin using JANUS array consisting of a pair of segmented double-sided Si detectors for particles, and SeGA array with sixteen 32-fold segmented HPGe detector for γ radiation at the NSCL-MSU facility. 126,128Xe; deduced levels, J, π, E2 matrix elements, B(E2), static quadrupole moments. GOSIA + GOSIA2 analyses; calculated Potential-energy surfaces (PES) in (Q0, Q2) plane. Comparison with PMMU shell model calculations, and with previous experimental results.
doi: 10.1103/PhysRevC.106.034311
2022KO06 Phys.Lett. B 827, 136953 (2022) T.Koiwai, K.Wimmer, P.Doornenbal, A.Obertelli, C.Barbieri, T.Duguet, J.D.Holt, T.Miyagi, P.Navratil, K.Ogata, N.Shimizu, V.Soma, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca NUCLEAR REACTIONS 1H(56Ca, 2p)55K, (56Ca, np)55Ca, E=250 MeV/nucleon; 1H(58Sc, 2p)57Ca, E not given, [secondary 56Ca and 58Sc beams from 9Be(70Zn, X), E=345 MeV/nucleon, followed by selection of fragments of interest using the BigRIPS separator through the TOF-ΔE-Bρ method at RIBF-RIKEN facility]; measured reaction products using the by SAMURAI magnetic spectrometer, protons, Eγ, Iγ, (proton)γ-coin using thick liquid hydrogen target system MINOS and DALI22 array of 226 NaI(Tl) scintillator detectors. 55K, 55,57Ca; deduced levels, J, π, level half-lives, exclusive population σ, spectroscopic factors, short-lived state in 57Ca. Comparison with state-of-the-art theoretical calculations using different approaches such as large-scale shell model (LSSM), valence-space in-medium similarity renormalization group (VS-IMSRG), full-space self-consistent Green's function (SCGF) with NNLOsat and NN+3N(lnl) interactions.
doi: 10.1016/j.physletb.2022.136953
2022OT01 Phys.Rev. C 105, 014319 (2022) T.Otsuka, N.Shimizu, Y.Tsunoda Moments and radii of exotic Na and Mg isotopes NUCLEAR STRUCTURE 21,23,25,27,29,31,33,35,37,39,41Na; calculated magnetic dipole and spectroscopic electric quadrupole moments of ground states. 21,23,25,27,29,31,33,35,37,39,41Na, 24,26,28,30,32,34,36,38,40,42,44Mg; calculated charge and matter rms radii. 27,31,39,41Na, 28,32,42,44Mg; calculated T plot contours in (Q0, Q2) plane, β2 values. Shell-model calculations with an ab initio effective nucleon-nucleon interaction reported by 2020Ts03: Nature 587, 66 (2020). Comparison with experimental data.
doi: 10.1103/PhysRevC.105.014319
2022TR03 Phys.Rev. C 106, 064314 (2022) V.Tripathi, S.Bhattacharya, E.Rubino, C.Benetti, J.F.Perello, S.L.Tabor, S.N.Liddick, P.C.Bender, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, K.Childers, B.R.Clark, B.P.Crider, J.T.Harke, B.Longfellow, R.S.Lubna, S.Luitel, T.H.Ogunbeku, A.L.Richard, S.Saha, N.Shimizu, O.A.Shehu, Y.Utsuno, R.Unz, Y.Xiao, S.Yoshida, Y.Zhu β- decay of exotic P and S isotopes with neutron number near 28 RADIOACTIVITY 42,43,44P, 44,46S(β-), (β-n) [from Be(48Ca, X), E=140 MeV/nucleon)]; 41S(β-) [from 42P(β-n]; measured Iβ, Eγ, Iγ, βγ-coin, (implant)γ-coin; deduced T1/2, logft, delayed neutron emission probabilities. 42P; deduced J, π of the ground state. 42,41S, 41Cl; deduced levels, J, π, transition intensities. The half-lives were extracted from the fitting of decay curves. Comparison to calculations performed with shell-model using SDPFSDG-MU interaction. Beta Counting System (BCS) - 40x40 DSSD as the implant and β detector, surrounded by a γ-array of 16 Clover detectors in close geometry (NSCL).
doi: 10.1103/PhysRevC.106.064314
2022YO06 Prog.Theor.Exp.Phys. 2022, 053D02 (2022) Constructing approximate shell-model wavefunctions by eigenvector continuation NUCLEAR STRUCTURE 24,25Mg, 28Si, 26Al, 46V, 47,48Ti; calculated level energies, J, π, yrast states, magnetic dipole moments with shell-model using a method called eigenvector continuation (EC).
doi: 10.1093/ptep/ptac057
2022YU06 Phys.Rev. C 106, 044314 (2022) C.Yuan, M.Liu, N.Shimizu, Z.Podolyak, T.Suzuki, T.Otsuka, Z.Liu Shell-model study on spectroscopic properties in the region "south" of 208Pb NUCLEAR STRUCTURE 198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213Tl, 198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217Pb, 198,199,200,201,202,203,204,205,206,207,208,209,210,211Hg, 198,199,200,201,202,203,204,205,206,207,208,209Au, 198,199,200,201,202,203,204,205,206,207Pt, 198,199,200,201,202,203,204Ir, 198,199,200,201,202,203Os, 198,199,200,201,202Re, 197,198,199,200,201W; calculated levels J, π, configurations, T1/2, effective single-particle energies, B(E2), binding energies, S(n), proton and neutron E2 transition matrix elements, electric quadrupole moments, magnetic dipole moments. Large-scale shell-model calculations with combined KHHE (with adjustment of its proton-proton part) and KHPE Hamiltonians and the monopole-based universal interaction. Comparison to experimental results and AME2020 data.
doi: 10.1103/PhysRevC.106.044314
2021AB10 Phys.Rev. C 104, 054315 (2021) T.Abe, P.Maris, T.Otsuka, N.Shimizu, Y.Utsuno, J.P.Vary Ground-state properties of light 4n self-conjugate nuclei in ab initio no-core Monte Carlo shell model calculations with nonlocal NN interactions NUCLEAR STRUCTURE 4He, 8Be, 12C, 16O, 20Ne; calculated ground-state energies and point-proton rms radii using ab initio no-core Monte Carlo shell model (MCSM), with the JISP16 and Daejeon16 nonlocal nucleon-nucleon interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.104.054315
2021GO09 Phys.Rev. C 103, 034327 (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, A.Yagi High-spin states in 35S NUCLEAR REACTIONS 26Mg(18O, n2α)35S, E=80 MeV; measured Eγ, Iγ, γγ-coin, (particle)γγ-coin, γγ(θ)(ADO) using GEMINI-II array with the BGO Compton suppressors at JAEA tandem accelerator facility, and ORGAM array with BGO anti-Compton suppressors at ALTO-Tandem facility. 35S; deduced high-spin levels, J, π, multipolarities; calculated levels, J, π, B(M1), B(E2) using large-scale shell-model calculations with SDPF-MSD4 interaction, and compared with experimental data.
doi: 10.1103/PhysRevC.103.034327
2021KA15 Phys.Rev. C 103, L021301 (2021) K.Kaneko, N.Shimizu, T.Mizusaki, Y.Sun Quasi-SU(3) coupling of (1h11/2, 2f7/2) across the N=82 shell gap: Enhanced E2 collectivity and shape evolution in Nd isotopes NUCLEAR STRUCTURE 56Ni; calculated levels, J, π using HFB+gcm and exact shell-model, and compared with experimental data. 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Sn, 108,110,112,114,116,118,120,122,124,126,128,130,132,134Te, 110,112,114,116,118,120,122,124,126,128,130,132,134,136Xe, 118,120,122,124,126,128,130,132,134,136,138Ba, 126,128,130,132,134,136,138,140Ce, 128,130,132,134,136,138,140,142Nd, 130,132,134,136,138,140,142,144Nd; calculated energies of the first 2+ and 4+ levels, B(E2) for the first 2+ states, and compared with experimental data. 128,130,132,134,136,138,140,142Nd; calculated energies of levels in the g.s. yrast band up to 12+, Qs and B(E2) for the first 2+ states in the gdshf model space, potential energy surfaces for 130,138,142Nd. Comparison with experimental data. Projected Hartree-Fock-Bogolyubov plus generator coordinate method using the PMMU model in the model space of 1g9/2, 1g7/2, 2d5/2, 2d3/2, 3s1/2, and 1h11/2 orbitals.
doi: 10.1103/PhysRevC.103.L021301
2021KI09 Phys.Lett. B 822, 136682 (2021) N.Kitamura, K.Wimmer, A.Poves, N.Shimizu, J.A.Tostevin, V.M.Bader, C.Bancroft, D.Barofsky, T.Baugher, D.Bazin, J.S.Berryman, V.Bildstein, A.Gade, N.Imai, T.Kroll, C.Langer, J.Lloyd, E.Lunderberg, F.Nowacki, G.Perdikakis, F.Recchia, T.Redpath, S.Saenz, D.Smalley, S.R.Stroberg, Y.Utsuno, D.Weisshaar, A.Westerberg Coexisting normal and intruder configurations in 32Mg NUCLEAR REACTIONS 9Be(33Mg, 32Mg), E=99.6 MeV/nucleon; 9Be(34Si, 32Mg), E=94.8 MeV/nucleon; measured reaction products, Eγ, Iγ. 32Mg; deduced γ-ray energies, J, π, level scheme, momentum distributions, one-neutron and two-proton knockout σ. Comparison with calculations, available data.
doi: 10.1016/j.physletb.2021.136682
2021KL03 Phys.Rev. C 104, 034310 (2021) H.Kleis, M.Seidlitz, A.Blazhev, L.Kaya, P.Reiter, K.Arnswald, A.Dewald, M.Droste, C.Fransen, O.Moller, N.Shimizu, Y.Tsunoda, Y.Utsuno, P.von Brentano, K.O.Zell Lifetime measurements of excited states in 55Cr NUCLEAR REACTIONS 48Ca(11B, 3np)55Cr, E=32 MeV; measured Eγ, Iγ, level T1/2 by recoil-distance Doppler shift (RDDS) method using Cologne plunger device surrounded by a cluster of seven HPGe crystals and five single HPGe detectors. 55Cr; deduced levels, J, π, B(M1), B(E2). Comparison with shell-model calculations, with previous results for level half-lives, and systematics of N=31 isotones. NUCLEAR STRUCTURE 53Ti, 55Cr, 57Fe, 59Ni, 61Zn; calculated levels, J, π, B(M1), B(E2), dominant neutron configurations for N=31 isotones using shell model, KB3G, FPD6, GXPF1A, and GXPF1Br interactions, and KSHELL, NUSHELLX@MSU computer codes. Comparison with experimental values.
doi: 10.1103/PhysRevC.104.034310
2021KU10 Phys.Rev. C 103, 034315 (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, S.Biswas, B.Das, P.Dey, R.Donthi, A.Goswami, S.Jadhav, G.Mukherjee, B.S.Naidu, S.Rajbanshi, L.P.Singh, H.P.Sharma, S.S.Tiwary, A.T.Vazhappilly New lifetime measurement for the 2+1 level in 112Sn by the Doppler-shift attenuation method NUCLEAR REACTIONS 112Sn(35Cl, 35Cl'), E=195 MeV; measured Eγ, Iγ, γγ-coin, half-lives of the first 2+ and 3- states from Doppler broadening using INGA array at BARC-TIFR Pelletron LINAC Facility. 112Sn; deduced levels, J, π, B(E2), B(E1); calculated potential energy surface in (Q2, Q4) plane using Q-constrained Hartree-Fock method. Comparison with previous measurements, and with generalized seniority model (GSM) and state-of-the-art Monte Carlo shell model (MCSM) calculations. Systematics of B(E2) for the first 2+ states in A=112-124 Sn nuclei.
doi: 10.1103/PhysRevC.103.034315
2021LI58 Phys.Rev. C 104, 044331 (2021) B.D.Linh, A.Corsi, A.Gillibert, A.Obertelli, P.Doornenbal, C.Barbieri, S.Chen, L.X.Chung, T.Duguet, M.Gomez-Ramos, J.D.Holt, A.Moro, P.Navratil, K.Ogata, N.T.T.Phuc, N.Shimizu, V.Soma, Y.Utsuno, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, N.Chiga, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, N.T.Khai, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, N.D.Ton, H.Tornqvist, V.Vaquero, V.Wagner, H.Wang, V.Werner, X.Xu, Y.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti Investigation of the ground-state spin inversion in the neutron-rich 47, 49Cl isotopes NUCLEAR REACTIONS 1H(50Ar, 2p)49Cl, (50Ar, 2n2p)47Cl; 1H(52K, n3p)49Cl; 1H(48Cl, np)47Cl, [secondary ion beams from 9Be(70Zn, X), E=345 MeV/nucleon primary reaction at RIBF-RIKEN facility, followed by separation of ions by BigRIPS separator using Bπ-ΔE-TOF measurement and MINOS hydrogen target system]; measured reaction products, A/Q versus Z plot, scattered ions of 47Cl and 49Cl using the SAMURAI spectrometer and identified by A/Q and Z, Eγ, Iγ, γγ-coin using DALI2+ array of 226 NaI(Tl) detectors. 47,49Cl; deduced levels, J and π for 49Cl, parallel and transverse momentum distributions and L-transfers for 49Cl, inclusive cross sections. Comparison of experimental level structure with shell-model calculations using SDPF-MU interactions, and IMSRG calculation. Comparison of momentum distributions with distorted-wave impulse approximation (DWIA), and transfer to continuum (TC) methods. Comparison of inclusive cross sections with LISE++ theoretical calculations. 49Cl; calculated levels, J, π, T1/2 of levels, B(E2), B(M1) using SDFP-MU shell-model. 45,47,49Cl; calculated levels, J, π, spectroscopic factors using shell-model and ab initio approaches. 41,43,45,47Cl; spin inversion issue not settled. Comparison of experimental and theoretical (from CGF) energy difference between the first 1/2+ and 3/2+ states in 35,36,37,38,39,40,41,43,45,47,49,51,53Cl, 37,38,39,40,41,43,45,47,49,51,53,55K.
doi: 10.1103/PhysRevC.104.044331
2021SH01 Phys.Rev. C 103, 014312 (2021) N.Shimizu, Y.Tsunoda, Y.Utsuno, T.Otsuka Variational approach with the superposition of the symmetry-restored quasiparticle vacua for nuclear shell-model calculations NUCLEAR STRUCTURE 132Ba, 150Nd, 150Sm; calculated energies, quadrupole moments, B(E2), variance-energy plot of low-spin positive-parity levels using variational calculation in quasiparticle vacua shell model (QVSM), utilizing the superposition of the angular-momentum, parity, number projected quasiparticle vacua. RADIOACTIVITY 76Ge, 150Nd(2β-); calculated 0νββ-decay GT-type, Fermi-type, and tensor-type nuclear matrix elements (NME) by Monte Carlo Shell-model (MCSM), and quasiparticle vacua shell model (QVSM).
doi: 10.1103/PhysRevC.103.014312
2021SH17 Prog.Theor.Exp.Phys. 2021, 033D01 (2021) N.Shimizu, T.Togashi, Y.Utsuno Gamow-Teller transitions of neutron-rich N = 82, 81 nuclei by shell-model calculations NUCLEAR STRUCTURE 132Sn, 130Cd, 128Pd, 130In, 133Sb, 131In, 129Ag, 127Rh, 126Ru, 125Tc, 124Mo; calculated energy levels, J, π, neutron separation energies, Gamow-Teller transitions. Large-scale shell-model calculations.
doi: 10.1093/ptep/ptab022
2021SH24 Phys.Rev. C 103, 064302 (2021) N.Shimizu, T.Mizusaki, K.Kaneko, Y.Tsunoda Generator-coordinate methods with symmetry-restored Hartree-Fock-Bogoliubov wave functions for large-scale shell-model calculations NUCLEAR STRUCTURE 48Ca, 56Ni, 132,133Ba; calculated levels, J, π, B(E2), quadrupole moments, and total energy surface contours in (Q0, Q2) plane using generator HFB-based coordinate method (GCM) combined with the projection method for large-scale shell model calculations. Benchmark tests of the axial HF+GCM, HF+GCM, axial HFB+GCM, and HFB+GCM methods for 48Ca and 132Ba. Possible relevance to proton-neutron mixing of the quasiparticle vacuum for precise estimation of nuclear matrix element (NMEs) for neutrinoless double-β decay.
doi: 10.1103/PhysRevC.103.064302
2020CO12 Phys.Rev. C 102, 064320 (2020) M.L.Cortes, W.Rodriguez, P.Doornenbal, A.Obertelli, J.D.Holt, J.Menendez, K.Ogata, A.Schwenk, N.Shimizu, J.Simonis, Y.Utsuno, K.Yoshida, L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti N = 32 shell closure below calcium: Low-lying structure of 50Ar NUCLEAR REACTIONS 1H(52Ca, 3p), E=266 MeV; 1H(53Ca, n3p), E=258 MeV; 1H(54Ca, 2n3p), E=251 MeV; 1H(55Ca, 3n3p), E=247 MeV; 1H(51K, 2p), E=257 MeV; 1H(52K, n2p), E=250 MeV; 1H(53K, 2n2p), E=245 MeV; 1H(51Ar, np), E=241 MeV; 1H(50Ar, p'), [secondary 52,53,54,55Ca, 51,52,53K, 50,51Ar beams from 9Be(70Zn, X), E=345 MeV/nucleon primary beam, followed by separation of fragments using BigRIPS separator at RIBF-RIKEN facility]; measured reaction products, yields, inclusive σ, Eγ, Iγ, γγ-coin using the MINOS hydrogen target, time projection chamber, SAMURAI dipole magnet, and DALI2+ array of 226 NaI(Tl) detectors. 50Ar; deduced Doppler corrected γ-ray spectra, levels, J, π; calculated levels, J, π, spectroscopic factors and cross sections for levels using the SDPF-MU shell model, and ab initio VS-IMSRG approach.
doi: 10.1103/PhysRevC.102.064320
2020FR06 Phys.Rev.Lett. 125, 012501 (2020) A.Frotscher, M.Gomez-Ramos, A.Obertelli, P.Doornenbal, G.Authelet, H.Baba, D.Calvet, F.Chateau, 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.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, 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.Cortes, M.Dewald, B.Ding, Zs.Dombradi, F.Flavigny, S.Franchoo, F.Giacoppo, M.Gorska, A.Gottardo, K.Hadynska-Klek, 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.Podolyak, M.Rudigier, E.Sahin, T.Y.Saito, C.Shand, P.-A.Soderstrom, I.G.Stefan, T.Sumikama, D.Suzuki, R.Orlandi, V.Vaquero, Zs.Vajta, V.Werner, K.Wimmer, J.Wu, Z.Xu Sequential Nature of (p, 3p) Two-Proton Knockout from Neutron-Rich Nuclei NUCLEAR REACTIONS 1H(101Sr, 3p), (75Zn, 3p), (81Ga, 3p)79Cu, (81Ga, 2p)80Zn, E ∼ 205 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ.
doi: 10.1103/PhysRevLett.125.012501
2020HO03 Phys.Lett. B 802, 135200 (2020) C.Hornung, D.Amanbayev, I.Dedes, G.Kripko-Koncz, I.Miskun, N.Shimizu, S.Ayet S.Andres, J.Bergmann, T.Dickel, J.Dudek, J.Ebert, H.Geissel, M.Gorska, H.Grawe, F.Greiner, E.Haettner, T.Otsuka, W.R.Plass, S.Purushothaman, A.-Ka.Rink, C.Scheidenberger, H.Weick, S.Bagchi, A.Blazhev, O.Charviakova, D.Curien, A.Finlay, S.Kaur, W.Lippert, J.-H.Otto, Z.Patyk, S.Pietri, Y.K.Tanaka, Y.Tsunoda, J.S.Winfield Isomer studies in the vicinity of the doubly-magic nucleus 100Sn: Observation of a new low-lying isomeric state in 97Ag RADIOACTIVITY 97Ag, 101,103,105,107,109In(IT) [from 9Be(124Xe, X), E=600 MeV/nucleon]; measured decay products, mass-to-charge spectra; deduced mass excess, excitation energies. Comparison with shell model calculations.
doi: 10.1016/j.physletb.2020.135200
2020KI19 Phys.Rev. C 102, 054318 (2020) 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.Kroll, 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, A.Westerberg Structure of 30Mg explored via in-beam γ-ray spectroscopy NUCLEAR REACTIONS 9Be(31Mg, 30Mg), E=97.9 MeV; 9Be(32Mg, 30Mg), E=99.1 MeV; 9Be(34Si, 30Mg), E=94.8 MeV; 9Be(35P, 30Mg), E=102.3 MeV, [secondary beams from 9Be(48Ca, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 separator for beam purification at NSCL-MSU facility]; measured reaction products using S800 spectrometer, Eγ, Iγ, γγ-coin, Doppler-corrected add-back γ-ray spectra using the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) of seven modules, each module housing four HPGe crystals. 30Mg; deduced levels, J, π, population σ of levels, spectroscopic factors, parallel momentum distributions; calculated T-plots in (Q0, Q2) plane. Comparison with shell-model calculations using the SDPF-M and EEdf1 interactions for all states. Systematics of low-energy levels in 30Mg, 32Si, 34S, 36Ar, 38Ca. Relevance to "island of inversion".
doi: 10.1103/PhysRevC.102.054318
2020LA06 Phys.Rev. C 101, 034315 (2020) Md.S.R.Laskar, R.Palit, S.N.Mishra, N.Shimizu, Y.Utsuno, E.Ideguchi, U.Garg, S.Biswas, F.S.Babra, R.Gala, C.S.Palshetkar, Z.Naik Structure of the 11/2- isomeric state in 133La NUCLEAR REACTIONS 126Te(11B, 4n)133La, E=52 MeV; measured Eγ, Iγ, spin precession, g factor of the 11/2- isomeric state in 133La by time differential perturbed angular distribution (TDPAD) technique, and its half-life by γ(t) at the Pelletron Linac Facility of BARC-TIFR. 133La; deduced levels, J, π, spectroscopic quadrupole moment, β2. Analysis of spin rotation data by magnetic dipole and electric quadrupole hyperfine interactions. Comparison with large scale shell model calculations.
doi: 10.1103/PhysRevC.101.034315
2020MI15 Phys.Rev. C 102, 034320 (2020) T.Miyagi, S.R.Stroberg, J.D.Holt, N.Shimizu Ab initio multishell valence-space Hamiltonians and the island of inversion NUCLEAR STRUCTURE 16O; calculated levels, J, π, single-particle energies with 4He core and psd valence space, ground-state energies and expectation values of the Hamiltonian with the 4He and p, pd5/2, pd5/2s1/2, and psd valence spaces. 26,28,30,32,34Ne, 28,30,32,34,36Mg, 30,32,34,36,38Si; calculated excitation energies of the first excited 0+ states, and the number of exciting neutrons from sd to pf orbits. 20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37Ne, 22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39Mg, 24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42Si; calculated ground-state energies, S(2n), energies of the first 2+ states and corresponding B(E2) values for even-even nuclei. 26,30Ne, 32Mg, 34Si; calculated energies and B(E2) of the 0+ and 2+ excited states from sd and sdf7/2p3/2 orbitals. 14,15,16,17,18,19,20,21,22O; calculated ground-state energies and charge radii. 40,41,42,43,44,45,46,47,48Ca; calculated changes in charge radii. Valence-space in-medium similarity renormalization group (VS-IMSRG) approach to derive the first multishell valence-space Hamiltonians from ab initio theory for calculation of properties of nuclei in the island-of-inversion region above oxygen. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.034320
2020TS03 Nature(London) 587, 66 (2020) N.Tsunoda, T.Otsuka, K.Takayanagi, N.Shimizu, T.Suzuki, Y.Utsuno, S.Yoshida, H.Ueno The impact of nuclear shape on the emergence of the neutron dripline NUCLEAR STRUCTURE 22,24,26,28,30,32,34,36Ne, 24,26,28,30,32,34,36,38,40,42Mg, 23,25,27,29,31,33,35,37Na, 19,21,23,25,27,29F; analyzed available data; calculated 2+ and 4+ energies using configuration interaction, ground-state energies, dripline, magic numbers, J, π and energy levels using nucleon-nucleon interactions, nuclear shapes. Comparison with ENSDF library, available data; deduced mechanism for the formation of the neutron dripline.
doi: 10.1038/s41586-020-2848-x
2020YA27 Phys.Rev. C 102, 065502 (2020) Large-scale shell-model calculations of nuclear Schiff moments of 129Xe and 199Hg NUCLEAR STRUCTURE 129Xe, 199Hg; calculated levels, J, π, magnetic moments, B(E2), configurations, nuclear Schiff moments and electric dipole moments (EDM). Large-scale shell-model calculations with realistic effective interactions, and using one particle-one-hole approximation to the intermediate states. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.065502
2019AB06 Phys.Rev. C 100, 014323 (2019) B.Abromeit, V.Tripathi, H.L.Crawford, S.N.Liddick, S.Yoshida, Y.Utsuno, P.C.Bender, B.P.Crider, R.Dungan, P.Fallon, K.Kravvaris, N.Larson, R.S.Lubna, T.Otsuka, C.J.Prokop, A.L.Richard, N.Shimizu, S.L.Tabor, A.Volya Β- decay of Tz = +11/2 isotopes 37Al and 39Si: Understanding Gamow-Teller strength distribution in neutron-rich nuclei RADIOACTIVITY 37Al, 37,39,40Si, 37,39P(β-)[from 9Be(48Ca, X), E=140 MeV/nucleon, followed by fragment separation using A1900 separator at NSCL-MSU]; 37Al, 39Si(β-n); measured β, Eγ, Iγ, βγ-coin, half-lives of decays of 37Al, 37Si and 39Si, %β-n for decays of 37Al and 39Si using β-counting system (BCS) at NSCL-MSU which consisted of silicon PIN detectors, segmented planar Ge double-sided strip detector (GeDSSD) for implants and β- detection, and an array of 16 segmented Ge detectors for γ rays. 36Si, 37Si, 37,39,40P, 37,39S; deduced levels, J, π, β feedings, logft, %β-n. Systematics of low-lying positive π states in 35,37,39P, and T1/2 in N=20-28 Si isotopes. Comparison with shell model calculations. NUCLEAR STRUCTURE 35,37,39P, 37,39S, 37Si; calculated levels, J, π, logft values. Shell model calculations using the SDPFSDG-MU interaction. Comparison with experimental data from the present experiment, and the evaluated data in the ENSDF database at NNDC.
doi: 10.1103/PhysRevC.100.014323
2019KA36 Phys.Rev. C 100, 024323 (2019) L.Kaya, A.Vogt, P.Reiter, M.Siciliano, N.Shimizu, Y.Utsuno, H.-K.Wang, A.Gargano, L.Coraggio, N.Itaco, K.Arnswald, D.Bazzacco, B.Birkenbach, A.Blazhev, A.Bracco, B.Bruyneel, L.Corradi, F.C.L.Crespi, G.de Angelis, M.Droste, J.Eberth, A.Esmaylzadeh, E.Farnea, E.Fioretto, C.Fransen, A.Gadea, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hirsch, P.R.John, J.Jolie, A.Jungclaus, V.Karayonchev, L.Kornwebel, W.Korten, S.Leoni, L.Lewandowski, S.Lunardi, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, C.Muller-Gatermann, D.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, J.-M.Regis, N.Saed-Samii, E.Sahin, F.Scarlassara, K.Schomacker, M.Seidlitz, B.Siebeck, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, B.Szpak, E.Teruya, C.Ur, J.J.Valiente-Dobon, K.Wolf, K.Yanase, N.Yoshinaga, K.O.Zell Isomer spectroscopy in 133Ba and high-spin structure of 134Ba NUCLEAR REACTIONS 124Sn(13C, X)133Ba/134Ba, E=55 MeV from FN tandem accelerator at Cologne; 208Pb(136Xe, X)134Ba, E=6.84 MeV/nucleon from PIAVE+ALPI accelerator complex at LNL-Legnaro; measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives of isomers by γγ(t) using eight HPGe and 12 LaBr3(ce) detectors at Cologne, and magnetic spectrometer PRISMA with AGATA array at Legnaro. 133,134Ba; deduced high-spin levels, isomers, J, π, multipolarities, alignments, bands, backbending, configurations, B(E1), B(E2). Comparison with shell-model calculations for 134Ba, and with previous experimental results. Systematics of positive- and negative-parity yrast states in N=78 nuclei: 130Te, 132Xe, 134Ba, 136Ce, 138Nd, 140Sm, 142Gd, and Z=56 nuclei: 126,128,130,132,134,136,138Ba. NUCLEAR STRUCTURE 134Ba; calculated levels, J, π using GCN50:82, SN100PN, SNV, PQM130, and realistic SM interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.100.024323
2019LA01 Phys.Rev. C 99, 014308 (2019) Md.S.R.Laskar, S.Saha, R.Palit, S.N.Mishra, N.Shimizu, Y.Utsuno, E.Ideguchi, Z.Naik, F.S.Babra, S.Biswas, S.Kumar, S.K.Mohanta, C.S.Palshetkar, P.Singh, P.C.Srivastava g-factor measurement of the 2738 keV isomer in 135La NUCLEAR REACTIONS 128Te(11B, 4n), E=52 MeV; measured delayed γ spectra, g factor by hyperfine interactions using TDPAD technique, half-life of the 23/2+ nanosecond isomer at the heavy-ion accelerator facility of TIFR, Mumbai. 135La; deduced level, configuration. Comparison with large-scale shell model calculations with SNV interaction. NUCLEAR MOMENTS 135La; measured g factor of the 2738-keV, 23/2+ isomer by hyperfine interactions using TDPAD technique, using 128Te(11B, 4n) reaction. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.99.014308
2019MI17 Phys.Rev. C 100, 034310 (2019) T.Miyagi, T.Abe, M.Kohno, P.Navratil, R.Okamoto, T.Otsuka, N.Shimizu, S.R.Stroberg Ground-state properties of doubly magic nuclei from the unitary-model-operator approach with chiral two- and three-nucleon forces NUCLEAR STRUCTURE 4He, 16O, 40Ca; calculated ground-state energies, root-mean square (rms) radii, charge radii. Unitary-model-operator approach (UMOA), with similarity renormalization group (SRG) evolved nucleon-nucleon (NN) and three-nucleon (3N) interactions based on chiral effective field theory. Comparison with experimental data.
doi: 10.1103/PhysRevC.100.034310
2019OT01 Phys.Rev.Lett. 123, 222502 (2019) T.Otsuka, Y.Tsunoda, T.Abe, N.Shimizu, P.Van Duppen Underlying Structure of Collective Bands and Self-Organization in Quantum Systems NUCLEAR STRUCTURE 154Sm, 166Er; calculated energy levels, J, π, spectroscopic electric quadrupole moments; deduced formation of collective bands.
doi: 10.1103/PhysRevLett.123.222502
2019SH26 Phys.Rev. C 100, 014307 (2019) T.Shizuma, M.Omer, R.Hajima, N.Shimizu, Y.Utsuno Spin and parity determination of the 3.004-MeV level in 27Al: Its low-lying multiplet structure NUCLEAR REACTIONS 27Al(polarized γ, γ'), E=2900-3100 quasimonochromatic, linearly polarized photon beam from the TUNL High Intensity γ-ray Source (HIγS); measured Eγ, Iγ, azimuthal asymmetry and γ-ray angular distributions. 27Al; deduced levels, J and π of 2.982- and 3.004-MeV levels, multipolarity and mixing ratio of γ transition, Γ0, integrated cross section, and B(E2) for 3.004-MeV level. Comparisons with Monte-Carlo shell model calculations, and with previous measurements.
doi: 10.1103/PhysRevC.100.014307
2018SH16 Phys.Rev.Lett. 120, 142502 (2018) Double Gamow-Teller Transitions and its Relation to Neutrinoless ββ Decay RADIOACTIVITY 48Ca(2β-); calculated double Gamow-Teller strength distribution using state-of-the-art large-scale nuclear shell model.
doi: 10.1103/PhysRevLett.120.142502
2018SH37 Phys.Rev. C 98, 054309 (2018) Variational Monte Carlo method for shell-model calculations in odd-mass nuclei and restoration of symmetry NUCLEAR STRUCTURE 48Cr; calculated energies of the ground-state band members up to 12+ using variation after and before angular momentum projection (J-VAP and J-VBP), and with the GXPF1A interaction. 49Cr; calculated energies of the 5/2-, 7/2-, 9/2- and 11/2- states with J-VAP approach and GXPF1A interaction. Variational Monte Carlo (VMC) method with and without variation after angular-momentum projection. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.98.054309
2018TO07 Phys.Rev.Lett. 121, 062501 (2018) T.Togashi, Y.Tsunoda, T.Otsuka, N.Shimizu, M.Honma Novel Shape Evolution in Sn Isotopes from Magic Numbers 50 to 82 NUCLEAR STRUCTURE 100,104,108,112,116,120,124,128,132,136Sn; calculated energies, R4/2, B(E2), occupation numbers. Comparison with available data.
doi: 10.1103/PhysRevLett.121.062501
2018YO06 Phys.Rev. C 97, 054321 (2018); Erratum Phys.Rev. C 109, 029904 (2024) S.Yoshida, Y.Utsuno, N.Shimizu, T.Otsuka Systematic shell-model study of β-decay properties and Gamow-Teller strength distributions in A ≈ 40 neutron-rich nuclei RADIOACTIVITY 39,40S, 40P, 41Cl(β-); calculated logft values and compared with experimental data. 35,36,37,38,39,40,41,42,43,44,45,46,47Al, 36,37,38,39,40,41,42,43,44,45,46,47,48Si, 37,38,39,40,41,42,43,44,45,46,47,48,49P, 38,39,40,41,42,43,44,45,46,47,48,49,50S, 39,40,41,42,43,44,45,46,47,48,49,50,51Cl, 40,41,42,43,44,45,46,47,48,49,50,51,52Ar(β-)(β-n); calculated β-decay T1/2, β-delayed neutron emission probabilities (Pn), Gamow-Teller (GT) strength distributions, and location of the Gamow-Teller giant resonances using large-scale shell-model with and without first-forbidden (FF) transitions included. Comparison with experimental values from the ENSDF database, and with other theoretical predictions.
doi: 10.1103/PhysRevC.97.054321
2018YO13 Phys.Rev. C 98, 061301 (2018) S.Yoshida, N.Shimizu, T.Togashi, T.Otsuka Uncertainty quantification in the nuclear shell model NUCLEAR STRUCTURE 12,14C; calculated levels, J, π, isotopic spin using shell model and 0p-shell space on top of the 4He core as the model space. Proposed a new method to quantify uncertainties in theoretical values using Laplace approximation (LA) in shell-model calculations. Comparison with experimental values taken from the ENSDF database.
doi: 10.1103/PhysRevC.98.061301
2017AN15 Phys.Rev. C 96, 054323 (2017) S.Ansari, J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, W.Korten, M.Zielinska, M.-D.Salsac, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, H.Mach, L.M.Fraile, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda Experimental study of the lifetime and phase transition in neutron-rich 98, 100, 102Zr NUCLEAR REACTIONS 235U(n, F), 241Pu(n, F), E=cold neutrons beam from PF1B, Institut Laue-Langevin (ILL), Grenoble; measured Eγ, γγ-coin, half-lives of the first 2+, 4+ and 6+ levels by fast-timing technique using the EXILL-FATIMA array consisting of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators; fast-timing coincidence events analyzed using method of mirror symmetric centroid difference (MSCD) and generalized centroid difference method (GCDM). 98,100,102Zr; deduced levels, B(E2). Comparison with Interacting Boson model and Monte-Carlo shell-model calculations, and with previous experimental results. Systematics of B(E2) values for the first 2+, 4+ and 6+ states in 96,98,100,102,104,106Zr.
doi: 10.1103/PhysRevC.96.054323
2017MO26 Phys.Rev. C 96, 034328 (2017) S.Momiyama, P.Doornenbal, H.Scheit, S.Takeuchi, M.Niikura, N.Aoi, K.Li, M.Matsushita, D.Steppenbeck, H.Wang, H.Baba, E.Ideguchi, M.Kimura, N.Kobayashi, Y.Kondo, J.Lee, S.Michimasa, T.Motobayashi, N.Shimizu, M.Takechi, Y.Togano, Y.Utsuno, K.Yoneda, H.Sakurai In-beam γ-ray spectroscopy of 35Mg via knockout reactions at intermediate energies NUCLEAR REACTIONS C(36Mg, 35Mg), E=235 MeV; C(37Al, 35Mg), E=246 MeV, [secondary 36Mg and 37Al beams from 9Be(48Ca, X), E=345 MeV/nucleon primary reaction, followed by separation using BigRIPS separator and Zero Degree spectrometer at RIBF-RIKEN facility]; measured reaction products, Eγ, Iγ, (35Mg)γ-coin, inclusive and γ-ray cross sections, parallel momentum distributions using DALI2 array of 186 large-volume NaI(Tl) crystals. 35Mg; deduced levels, J, π. Comparison with shell-model calculations using SDPF-M interaction, and with antisymmetrized molecular dynamics (AMD) model calculations using Gogny D1S force. C(36Mg, 34Mg), (36Mg, 33Mg), E=235 MeV; measured inclusive σ. NUCLEAR STRUCTURE 35Mg; calculated levels, J, π, single-particle knockout cross sections, spectroscopic factors using shell-model with SDPF-M interaction, and antisymmetrized molecular dynamics (AMD) model with Gogny D1S force. Comparison with experimental data.
doi: 10.1103/PhysRevC.96.034328
2017PA01 Phys.Rev.Lett. 118, 032501 (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, Z.Xu Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of 110Zr NUCLEAR REACTIONS H(113Tc, p)112Mo, (111Nb, p)110Zr, E=260 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced 2+ state energies, R4/2 energy ratio. Comparison with Monte Carlo shell model predictions.
doi: 10.1103/PhysRevLett.118.032501
2017QU05 Phys.Rev. C 96, 044313 (2017) M.Queiser, A.Vogt, M.Seidlitz, P.Reiter, T.Togashi, N.Shimizu, Y.Utsuno, T.Otsuka, M.Honma, P.Petkov, K.Arnswald, R.Altenkirch, B.Birkenbach, A.Blazhev, T.Braunroth, A.Dewald, J.Eberth, C.Fransen, B.Fu, H.Hess, R.Hetzenegger, R.Hirsch, J.Jolie, V.Karayonchev, L.Kaya, L.Lewandowski, C.Muller-Gatermann, J.-M.Regis, D.Rosiak, D.Schneiders, B.Siebeck, T.Steinbach, K.Wolf, K.-O.Zell Cross-shell excitations from the fp shell: Lifetime measurements in 61Zn NUCLEAR REACTIONS 40Ca(24Mg, n2p), E=77 MeV; 58Ni(α, n), E=19 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), level half-lives by recoil-distance Doppler-shift (RDDS) method using Cologne plunger device and an array of 12 HPGe detectors, and by γγ(t) electronic fast timing technique using eight HPGe detectors and eight LaBr3:Ce detectors at the Tandem accelerator facility of the University of Cologne. 61Zn; deduced high-spin levels, nano-second isomers, J, π, multipolarities, mixing ratios, B(E2), B(E1), B(M1), B(M2), configurations, deformation. Comparison with shell-model calculations using jj44b, GXPF1, GXPF1A, and GXPF1Br+VMU interactions.
doi: 10.1103/PhysRevC.96.044313
2017RE05 Phys.Rev. C 95, 054319 (2017); Erratum Phys.Rev. C 95, 069902 (2017) J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, M.Pfeiffer, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, L.M.Fraile, H.Mach, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, W.Korten, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda Abrupt shape transition at neutron number N=60: B(E2) values in 94, 96, 98Sr from fast γ - γ timing NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutron beam; measured Eγ, Iγ, level half-lives by fast-timing γγ(t) method using EXILL and FATIMA spectrometer at ILL-Grenoble reactor facility. 94,96,98Sr; deduced levels, B(E2)values. Comparison with previous experimental values, and with Monte Carlo Shell-model calculations.
doi: 10.1103/PhysRevC.95.054319
2017TR02 Phys.Rev. C 95, 024308 (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.Volya, S.Yoshida β decay of 38, 40Si (Tz =+5, +6) to low-lying core excited states in odd-odd 38-40P isotopes RADIOACTIVITY 38,40Si(β-), (β-n)[from 9Be(48Ca, X), E=140 MeV/nucleon using A1900 separator at NSCL-MSU facility]; measured Eγ, Iγ, Eβ, γγ-coin, β-correlated γ spectra, half-lives and delayed-neutron probabilities (Pn) of decays of 38Si and 40Si using planar germanium double-sided strip detector (GeDSSD) and SeGA array. 38,40P; deduced levels, J, π, β feedings log ft values. Comparison with known experimental level schemes of 34 and 36P, and with shell model calculations using SDPF-MU interaction. 36,38,40Si(β-); calculated half-lives and log ft values of decays of Si isotopes, beta-delayed neutron probabilities (Pn) using shell model, and compared with experimental values. NUCLEAR STRUCTURE 34,36,38,40P; calculated levels, J, π, proton and neutron occupancies for the ground state and the three excited 1+ states, Gamow-Teller matrix elements for the 1+ states. Shell model calculations with SDPF-MU interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.024308
2017TS01 Phys.Rev. C 95, 021304 (2017) N.Tsunoda, T.Otsuka, N.Shimizu, M.Hjorth-Jensen, K.Takayanagi, T.Suzuki Exotic neutron-rich medium-mass nuclei with realistic nuclear forces NUCLEAR STRUCTURE 20,22,24,26,28,30,32Ne, 24,26,28,30,32,34Mg, 28,30,32,34,36Si; calculated energies of the first 2+ and 4+ states, B(E2), expectation values of the number of the particle-hole excitations in the ground states of Mg isotopes. 31,32Mg; calculated levels, J, π. 28O, 30Ne, 32Mg, 34Si, 36S, 38Ar, 40Ca; calculated effective neutron single-particle energies (ESPEs) of N=20 isotones. Extended Kuo-Krenciglowa (EKK) theory of effective nucleon-nucleon interaction for exotic nuclei. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.021304
2016IW02 Phys.Rev.Lett. 116, 112502 (2016) Y.Iwata, N.Shimizu, T.Otsuka, Y.Utsuno, J.Menendez, M.Honma, T.Abe Large-Scale Shell-Model Analysis of the Neutrinoless ββ Decay of 48Ca RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix element for the neutrinoless double-beta decay using large-scale shell-model calculations.
doi: 10.1103/PhysRevLett.116.112502
2016KR07 Phys.Rev.Lett. 117, 172503 (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, M.Zweidinger First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of 96Zr NUCLEAR REACTIONS 96Zr(E, E'), E=43 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2). Comparison with the shell-model calculations and a two-state model with and without mixing.
doi: 10.1103/PhysRevLett.117.172503
2016SH07 Phys.Rev. C 93, 024320 (2016) Y.Shiga, K.Yoneda, D.Steppenbeck, N.Aoi, P.Doornenbal, J.Lee, H.Liu, M.Matsushita, S.Takeuchi, H.Wang, H.Baba, P.Bednarczyk, Zs.Dombradi, Zs.Fulop, S.Go, T.Hashimoto, M.Honma, E.Ideguchi, K.Ieki, K.Kobayashi, Y.Kondo, R.Minakata, T.Motobayashi, D.Nishimura, T.Otsuka, H.Otsu, H.Sakurai, N.Shimizu, D.Sohler, Y.Sun, A.Tamii, R.Tanaka, Z.Tian, Y.Tsunoda, Zs.Vajta, T.Yamamoto, X.Yang, Z.Yang, Y.Ye, R.Yokoyama, J.Zenihiro Investigating nuclear shell structure in the vicinity of 78Ni: Low-lying excited states in the neutron-rich isotopes 80, 82Zn NUCLEAR REACTIONS 9Be(80Zn, 80Zn'), (81Ga, 80Zn), (80Ga, 78Zn), (83Ge, 82Ge), (83As, 82Ge), E=250 MeV/nucleon, [secondary 80Zn, 80,81Ga, 82,83Ge, 83As and other beams from 9Be(238U, X), E=345 MeV/nucleon primary reaction]; measured yields of reaction products, Eγ, Iγ, Doppler corrected γ rays, γγ-coin, level half-lives by line-shape analysis using BigRIPS separator, ZeroDegree spectrometer for particle identification and detection, and DALI2 array of NaI(Tl) detectors for γ rays at RIBF-RIKEN facility. 76,78,80,82Zn, 82Ge; deduced levels, J, π, B(E2), configurations. Comparison with previous experimental results, and with calculations using Monte Carlo shell-model (MCSM) and shell-model with JUN45 interaction. Systematics of energies of first 2+ and 4+ states and E(4+/2+) ratios in 74,76,78,80,82Zn, 82Ge, 84Se, 86Kr.
doi: 10.1103/PhysRevC.93.024320
2016TO15 Phys.Rev.Lett. 117, 172502 (2016) T.Togashi, Y.Tsunoda, T.Otsuka, N.Shimizu Quantum Phase Transition in the Shape of Zr isotopes NUCLEAR STRUCTURE 90,92,94,96,98,100,102,104,106,108,110Zr; calculated energy levels, J, π, B(E2), deformation parameters; deduced coexistence of prolate and triaxial shapes.
doi: 10.1103/PhysRevLett.117.172502
2015CH25 Phys.Rev. C 91, 044309 (2015) C.J.Chiara, D.Weisshaar, R.V.F.Janssens, Y.Tsunoda, T.Otsuka, J.L.Harker, W.B.Walters, F.Recchia, M.Albers, M.Alcorta, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, P.F.Bertone, C.M.Campbell, M.P.Carpenter, J.Chen, H.L.Crawford, H.M.David, D.T.Doherty, A.Gade, C.R.Hoffman, M.Honma, F.G.Kondev, A.Korichi, C.Langer, N.Larson, T.Lauritsen, S.N.Liddick, E.Lunderberg, A.O.Macchiavelli, S.Noji, C.Prokop, A.M.Rogers, D.Seweryniak, N.Shimizu, S.R.Stroberg, S.Suchyta, Y.Utsuno, S.J.Williams, K.Wimmer, S.Zhu Identification of deformed intruder states in semi-magic 70Ni NUCLEAR REACTIONS 208Pb(70Zn, X)70Ni, E=440 MeV; measured Eγ, Iγ, prompt- and delayed-γ spectra, γγ-coin, γγ(θ) using Gammasphere array at ATLAS-ANL facility. 9Be(82Se, X)70Ni, E=140 MeV/nucleon; measured Eγ, Iγ, (70Ni)γ-, γγ-coin, prompt and delayed γ rays using S800 spectrograph, GRETINA and CsI(Na) arrays at NSCL-MSU facility. 70Ni; deduced levels, J, π. Comparison with Monte Carlo shell-model calculations. NUCLEAR STRUCTURE 68,70Ni, 92Mo; calculated levels, J, π, potential-energy surface contours in (Q2, Q4) plane. Shell-model using jj44bpn, jj44pna, JUN45, and JUN45 effective interactions, and Monte Carlo shell-model with A3DA interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.044309
2015FL01 Phys.Rev. C 91, 034310 (2015) F.Flavigny, D.Pauwels, D.Radulov, I.J.Darby, H.De Witte, J.Diriken, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, M.Huyse, V.S.Ivanov, U.Koster, B.A.Marsh, T.Otsuka, L.Popescu, R.Raabe, M.D.Seliverstov, N.Shimizu, A.M.Sjodin, Y.Tsunoda, P.Van den Bergh, P.Van Duppen, J.Van de Walle, M.Venhart, W.B.Walters, K.Wimmer Characterization of the low-lying 0+ AND 2+ states in 68Ni via β decay of the low-spin 68Co isomer RADIOACTIVITY 68Co(β-), (β-n)[from 68Mn -> 68Fe -> 68Co decay chain, 68Mn from 238U(p, F), E=1 GeV]; measured Eγ, Iγ, βγ-, γγ-coin, half-life of first excited 0+ state by βγ(t) using RILIS and Miniball array at ISOLDE-CERN facility. 68Ni; deduced levels, J, π, β feedings, logft, E0 decays, delayed neutron emission probability Pn, B(E2), configuration. Comparison with previous results, and with Monte Carlo shell model (MCSM) calculations. 67,68Fe, 67Co, 68Ga, 136I(β-); detected γ rays. NUCLEAR STRUCTURE 68Ni; calculated Potential energy surfaces in (Q0, Q2) plane for the ground state and first 2+ state. Large-scale Monte Carlo shell model calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.034310
2015ST10 Phys.Rev.Lett. 114, 252501 (2015) D.Steppenbeck, S.Takeuchi, N.Aoi, P.Doornenbal, M.Matsushita, H.Wang, Y.Utsuno, H.Baba, S.Go, J.Lee, K.Matsui, S.Michimasa, T.Motobayashi, D.Nishimura, T.Otsuka, H.Sakurai, Y.Shiga, N.Shimizu, P.-A.Soderstrom, T.Sumikama, R.Taniuchi, J.J.Valiente-Dobon, K.Yoneda Low-Lying Structure of 50Ar and the N=32 Subshell Closure NUCLEAR REACTIONS 9Be(54Ca, X), (55Sc, X), (56Ti, X)50Ar, E=220 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level energy, J, π. Comparison with large-scale shell-model calculations performed in the sdpf model space using the SDPF-MU effective interaction.
doi: 10.1103/PhysRevLett.114.252501
2015ST14 Eur.Phys.J. A 51, 117 (2015) K.Steiger, S.Nishimura, Z.Li, R.Gernhauser, Y.Utsuno, R.Chen, T.Faestermann, C.Hinke, R.Krucken, M.Kurata-Nishimura, G.Lorusso, Y.Miyashita, N.Shimizu, K.Sugimoto, T.Sumikama, H.Watanabe, K.Yoshinaga Nuclear structure of 37, 38Si investigated by decay spectroscopy of 37, 38Al RADIOACTIVITY 37,38Al(β-)[from 48Ca projectile fragmentation at 345 MeV/nucleon]; measured β-delayed Eγ, Iγ, γγ-coin; deduced T1/2. 37,38Si deduced levels, J, π, γ transitions; calculated levels, J, π using shell model with SDPF-MU and modified SDPF-MU interaction.
doi: 10.1140/epja/i2015-15117-9
2015TO04 Phys.Rev. C 91, 024320 (2015) T.Togashi, N.Shimizu, Y.Utsuno, T.Otsuka, M.Honma Large-scale shell-model calculations for unnatural-parity high-spin states in neutron-rich Cr and Fe isotopes NUCLEAR STRUCTURE 55,56,57,58,59Cr, 57,58,59,60,61Fe; calculated levels, J, π, total energy surface contours in (Q0, Q2) plane, electric spectroscopic and intrinsic quadrupole moments, natural positive-parity and unnatural negative-parity high-spin states in 56,58Cr, 58,60Fe. 53,55,57,59Cr, 55,57,59,61Fe, 57,59,61,63Ni; calculated energies of 9/2+ states and one-neutron transfer spectroscopic factors. Z=24, N=22-35; Z=26, N=22-35; calculated effective single-particle energies (ESPEs) of a neutron. Large-scale shell-model calculations in fp-shell+0g9/2+1d5/2 space with GXPF1Br Hamiltonian. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.024320
2015UT01 Phys.Rev.Lett. 114, 032501 (2015) Y.Utsuno, N.Shimizu, T.Otsuka, T.Yoshida, Y.Tsunoda Nature of Isomerism in Exotic Sulfur Isotopes NUCLEAR STRUCTURE 43,44S; calculated energy levels, J, π, deformation parameters. Nuclear shell model, comparison with available data.
doi: 10.1103/PhysRevLett.114.032501
2014SU05 Phys.Rev. C 89, 021301 (2014) S.Suchyta, S.N.Liddick, Y.Tsunoda, T.Otsuka, M.B.Bennett, A.Chemey, M.Honma, N.Larson, C.J.Prokop, S.J.Quinn, N.Shimizu, A.Simon, A.Spyrou, V.Tripathi, Y.Utsuno, J.M.VonMoss Shape coexistence in 68Ni RADIOACTIVITY 68Co(β-)[from 9Be(76Ge, X), E=130 MeV/nucleon]; measured Eγ, Iγ, γγ-coin, internal transitions, internal-conversion decay, electron-positron pair production from first excited 0+ state using germanium double-sided strip detector (GeDSSD) and SeGA array at NSCL-MSU facility. 68Ni; deduced level energy of first excited 0+ state, E0 transition strength, level half-life, difference in deformation between the excited 0+ state and the ground state. Comparison with Monte-Carlo shell-model calculations using several interactions, and with experimental data for excited 0+ states in 90Zr.
doi: 10.1103/PhysRevC.89.021301
2014TS02 Phys.Rev. C 89, 031301 (2014) Y.Tsunoda, T.Otsuka, N.Shimizu, M.Honma, Y.Utsuno Novel shape evolution in exotic Ni isotopes and configuration-dependent shell structure NUCLEAR STRUCTURE 56,58,60,62,64,66,68,70,72,74,76,78Ni; calculated levels, J, π, B(E2) for first 2+ states, potential energy surface contours in (Q0, Q2) plane. Interplays among spherical, oblate, prolate, γ-unstable shapes, and E(5)-like fluctuations. Coexistence of spherical and strongly deformed shapes. Large-scale Monte Carlo shell model (MCSM). Comparison with experimental data.
doi: 10.1103/PhysRevC.89.031301
2013LI32 J.Phys.:Conf.Ser. 445, 012005 (2013) L.Liu, T.Otsuka, N.Shimizu, Y.Utsuno, R.Roth No-Core MCSM calculation for 10Be and 12Be low-lying spectra NUCLEAR STRUCTURE 10Be; calculated levels, J, π. 10Be, 10C; calculated B(E2). NCMCSM (No-core Monte Carlo Shell Model); compared to data. Also 12Be mentioned, but no results presented.
doi: 10.1088/1742-6596/445/1/012005
2013OH03 Phys.Rev. C 87, 044324 (2013) Y.Ohkubo, A.Taniguchi, Q.Xu, M.Tanigaki, N.Shimizu, T.Otsuka Magnetic moment of the 2083 keV level of 140Ce RADIOACTIVITY 140La(β-)[from U(n, F)140Cs, E=thermal, followed by 140Cs --> 140Ba --> 140La β- decay chain]; measured time-differential perturbed angular correlation (TDPAC), Larmor frequencies. 140Ce; deduced magnetic moment of first 4+ level at 2083 keV. NUCLEAR MOMENTS 140Ce; measured magnetic dipole moment of first 4+ level at 2083 keV using the time-differential perturbed angular correlation (TDPAC) technique, using the known value of hyperfine field at 141Ce in Fe. Comparison with previous studies, and with shell-model calculations. Systematics of magnetic dipole moments of first 2+ and 4+ states in 136Xe, 138Ba, 140Ce and 142Nd.
doi: 10.1103/PhysRevC.87.044324
2013SH28 J.Phys.:Conf.Ser. 445, 012004 (2013) N.Shimizu, T.Otsuka, Y.Utsuno, T.Mizusaki, M.Honma, T.Abe History and future perspectives of the Monte Carlo shell model -from Alphleet to K computer-
doi: 10.1088/1742-6596/445/1/012004
2013TS02 J.Phys.:Conf.Ser. 445, 012028 (2013) Y.Tsunoda, T.Otsuka, N.Shimizu, M.Honma, Y.Utsuno Study of nuclei around Z = 28 by large-scale shell model calculations NUCLEAR STRUCTURE 48,50,52,54,56,58,60,62,64,66,68,70,72,74Cr, 56,58,60,62,64,66,68,70,72,74,76,78Ni; calculated low-lying levels, J, π, B(E2), deformation using large-scale Monte Carlo shell model. Compared to data.
doi: 10.1088/1742-6596/445/1/012028
2013YO06 J.Phys.:Conf.Ser. 445, 012038 (2013) T.Yoshida, N.Shimizu, T.Abe, T.Otsuka Density profiles in the intrinsic frame of light nuclei obtained from Monte Carlo shell model calculation NUCLEAR STRUCTURE 8,10Be; calculated wavefunctions, proton density profiles, radius using Monte Carlo shell model. 8Be deduced 2α-cluster.
doi: 10.1088/1742-6596/445/1/012038
2012AB14 Phys.Rev. C 86, 054301 (2012) T.Abe, P.Maris, T.Otsuka, N.Shimizu, Y.Utsuno, J.P.Vary Benchmarks of the full configuration interaction, Monte Carlo shell model, and no-core full configuration methods NUCLEAR STRUCTURE 4,6He, 6,7Li, 8Be, 10B, 12C, 16O; calculated levels, point-particle rms radii, electromagnetic moments using the full configuration interaction (FCI), Monte Carlo shell model (MCSM), and no core full configuration (NCFC) approaches using realistic JISP16 nucleon-nucleon interaction.
doi: 10.1103/PhysRevC.86.054301
2012BA40 Phys.Rev. C 86, 034310 (2012) C.Bauer, T.Behrens, V.Bildstein, A.Blazhev, B.Bruyneel, J.Butterworth, E.Clement, L.Coquard, J.L.Egido, A.Ekstrom, C.R.Fitzpatrick, C.Fransen, R.Gernhauser, D.Habs, H.Hess, J.Leske, T.Kroll, R.Krucken, R.Lutter, P.Marley, T.Moller, T.Otsuka, N.Patronis, A.Petts, N.Pietralla, T.R.Rodriguez, N.Shimizu, C.Stahl, I.Stefanescu, T.Stora, P.G.Thirolf, D.Voulot, J.van de Walle, N.Warr, F.Wenander, A.Wiens Prolate shape of 140Ba from a first combined Doppler-shift and Coulomb-excitation measurement at the REX-ISOLDE facility NUCLEAR REACTIONS 96Mo(140Ba, 140Ba'), [140Ba secondary beam from U(p, X), E=1.4 GeV primary beam], E=392 MeV; measured Eγ, Iγ, (particle)γ-coin, yields in different angular ranges, differential σ(θ), half-life of first 2+ state by DSAM using REX-ISOLDE and MINIBALL setup at ISOLDE-CERN. 140Ba; deduced level, E2 matrix element, B(E2), and static quadrupole moment of first 2+ state. Z=56, A=130=146; systematics of energies and B(E2) of first 2+ states. Comparison with Monte Carlo shell-model approach and beyond-mean-field calculations. Gogny energy density functionals and distribution of probability contours in the triaxial (β, γ) plane for 0+, 2+ and 4+ states first two bands. NUCLEAR MOMENTS 140Ba; measured static quadrupole moment of first 2+ state by reorientation analysis of Coulomb-excitation yields.
doi: 10.1103/PhysRevC.86.034310
2012KO17 Phys.Rev. C 85, 054309 (2012) J.Kotila, K.Nomura, L.Guo, N.Shimizu, T.Otsuka Shape phase transitions in the interacting boson model: Phenomenological versus microscopic descriptions NUCLEAR STRUCTURE 148,150,152,154,156,158,160Gd, 150,152,154,156,158,160,162Dy; calculated levels, J, π, B(E2), quadrupole moments for 2+ states, S(2n), potential energy surfaces in β-γ plane, R(first 4+/first 2+) and R(first 6+/second 0+) ratios. Shape phase transitions, X(5) critical-point nuclei. Phenomenological and microscopic proton-neutron interacting boson model (IBM) calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.054309
2012LI32 Phys.Rev. C 86, 014302 (2012) L.Liu, T.Otsuka, N.Shimizu, Y.Utsuno, R.Roth No-core Monte Carlo shell-model calculation for 10Be and 12Be low-lying spectra NUCLEAR STRUCTURE 4He; calculated ground-state energy as a function of harmonic oscillator parameter, center of mass motion energy. 10,12Be, 10C; calculated levels, J, π, B(E2), deformation parameter, spectroscopic quadrupole moments, single-particle-orbit occupation numbers. No-core Monte Carlo shell-model (MCSM) with unitary correlation operator method (UCOM). Comparison with experimental data.
doi: 10.1103/PhysRevC.86.014302
2012MI02 Phys.Rev. C 85, 021301 (2012) New variational Monte Carlo method with energy variance extrapolation for large-scale shell-model calculations NUCLEAR STRUCTURE 56Ni; calculated levels energy patterns for J=0, 2, 4 states, exact shell-model energies. New variational Monte Carlo (VMC) method with energy variance extrapolation for large scale shell-model calculations.
doi: 10.1103/PhysRevC.85.021301
2012NO02 Phys.Rev.Lett. 108, 132501 (2012) K.Nomura, N.Shimizu, D.Vretenar, T.Niksic, T.Otsuka Robust Regularity in γ-Soft Nuclei and Its Microscopic Realization NUCLEAR STRUCTURE 134Ba, 192,194,196Pt, 190,192Os, 112Ru; calculated energy and B(E2) ratios, energy surfaces, low-lying energy spectra. Framework of energy density functionals.
doi: 10.1103/PhysRevLett.108.132501
2012NO07 Phys.Rev. C 86, 034322 (2012) K.Nomura, R.Rodriguez-Guzman, L.M.Robledo, N.Shimizu Shape coexistence in lead isotopes in the interacting boson model with a Gogny energy density functional NUCLEAR STRUCTURE 182,184,186,188,190,192Pb; calculated levels, J, π, potential energy surface contours in β-γ plane, B(E2), configuration, spectroscopic quadrupole moments using interacting boson model (IBM) model plus configuration mixing with microscopic input based on the Gogny energy density functional (EDF). Evolution of the shape coexistence in the neutron-deficient lead isotopes. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.034322
2012SH13 Phys.Rev. C 85, 054301 (2012) N.Shimizu, Y.Utsuno, T.Mizusaki, M.Honma, Y.Tsunoda, T.Otsuka Variational procedure for nuclear shell-model calculations and energy-variance extrapolation NUCLEAR STRUCTURE 64,72Ge; calculated energy vs. energy variance plot for 0+ ground state and first excited 0+ state. 72Ge; calculated total energy surface contours. Shell-model calculations with energy-variance extrapolation (EVE) method and wavefunctions from linear combinations of the parity, angular-momentum projected Slater determinants.
doi: 10.1103/PhysRevC.85.054301
2012UT01 Prog.Theor.Phys.(Kyoto), Suppl. 196, 304 (2012) Y.Utsuno, T.Otsuka, B.A.Brown, M.Honma, T.Mizusaki, N.Shimizu Shell Evolution around and beyond N=28 Studied with Large-Scale Shell-Model Calculations NUCLEAR STRUCTURE 40,42,44,46,48,50,52Ca; calculated energy levels, distribution of spectroscopic factors; deduced evolution of shell structure. Comparison with experimental data.
doi: 10.1143/PTPS.196.304
2012UT02 Phys.Rev. C 86, 051301 (2012) Y.Utsuno, T.Otsuka, B.A.Brown, M.Honma, T.Mizusaki, N.Shimizu Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect NUCLEAR STRUCTURE 36,38,40,42Si, 38,40,42,44S; calculated levels, J, π, B(E2), S(2n), potential-energy surfaces. 40,42,44,46Ar, 42,44,46,48Ca; calculated S(2n). 48Ca(e, e'p); calculated spectroscopic factors. Shell-model calculations with tensor-force component of the Hamiltonian. Jahn-Teller type effect. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.051301
2011NO04 Phys.Rev. C 83, 041302 (2011); Pub.Note Phys.Rev. C 83, 059901 (2011) K.Nomura, T.Otsuka, N.Shimizu, L.Guo Microscopic formulation of the interacting boson model for rotational nuclei NUCLEAR STRUCTURE 146,148,150,152,154Sm, 230,232,234,236,238U; calculated overlap between the intrinsic state and its rotation angle, and moments of inertia. 146,148,150,152,154Sm, 148,150,152,154,156,158,160Gd, 230Th, 232U; calculated yrast spectra of ground state rotational bands, J, π. Interacting boson model for rotational nuclei with axially symmetric strong deformation. Comparison with experimental data.
doi: 10.1103/PhysRevC.83.041302
2011NO09 Phys.Rev. C 84, 014302 (2011) K.Nomura, T.Niksic, T.Otsuka, N.Shimizu, D.Vretenar Quadrupole collective dynamics from energy density functionals: Collective Hamiltonian and the interacting boson model NUCLEAR STRUCTURE 192,194,196Pt; calculated maps of binding energies, and squares of wave functions in the β-γ deformation plane, levels, J, π, g.s. and γ-vibrational bands. Energy density functionals (DD-PC1), and Interacting Boson model applied to quadrupole collective correlations. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.014302
2010NO01 Phys.Rev. C 81, 044307 (2010) Formulating the interacting boson model by mean-field methods NUCLEAR STRUCTURE 146,148,150,152,154,156Sm, 110,112,114,116,118,120,122,124,126,128,130,132,134,136Ba, 108,110,112,114,116,118,120,122,124,126,128,130,132,134Xe, 98,100,102,104,106,108,110,112,114,116,118,120,122,124Ru, 100,102,104,106,108,110,112,114,116,118,120,122,124,126Pd, 204,206,208,210,212,214W, 206,208,210,212,214,216Os; calculated potential energy surfaces, levels, J, π, two-neutron separation energies, and B(E2) ratios using interacting boson model (IBM) and Skyrme HF mean-field model using SLy4 and SkM* interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.81.044307
2010SH30 Phys.Rev. C 82, 061305 (2010) N.Shimizu, Y.Utsuno, T.Mizusaki, T.Otsuka, T.Abe, M.Honma Novel extrapolation method in the Monte Carlo shell model NUCLEAR STRUCTURE 56Ni, 64Ge; calculated ground and excited state energies and quadrupole moments using Monte-Carlo shell-model (MCSM).
doi: 10.1103/PhysRevC.82.061305
2009NO05 Acta Phys.Pol. B40, 603 (2009) New Formulation of Interacting Boson Model and Heavy Exotic Nuclei
2008NO05 Phys.Rev.Lett. 101, 142501 (2008) Mean-Field Derivation of the Interacting Boson Model Hamiltonian and Exotic Nuclei NUCLEAR STRUCTURE 134Ba; calculated level energies, J, π, deformation parameters using the IBM. W, Sm; calculated level energies, deformation parameters using the IBM.
doi: 10.1103/PhysRevLett.101.142501
2007SH38 Prog.Theor.Phys.(Kyoto) 118, 491 (2007) Ground State Properties with a Random Two-Body Interaction
doi: 10.1143/PTP.118.491
2004SH46 Phys.Rev. C 70, 054313 (2004); Erratum Phys.Rev. C 74, 059903 (2006) N.Shimizu, T.Otsuka, T.Mizusaki, M.Honma Anomalous properties of quadrupole collective states in 136Te and beyond NUCLEAR STRUCTURE 134,136,138,140Te, 134,136,138Sn; calculated level energies, B(E2), quadrupole matrix elements, g factors. 136Te levels calculated quadrupole moments, μ. Monte Carlo shell model.
doi: 10.1103/PhysRevC.70.054313
2004ZH37 Phys.Rev. C 70, 054322 (2004) Y.M.Zhao, A.Arima, N.Shimizu, K.Ogawa, N.Yoshinaga, O.Scholten Patterns of the ground states in the presence of random interactions: Nucleon systems
doi: 10.1103/PhysRevC.70.054322
2002SH27 Nucl.Phys. A704, 244c (2002) N.Shimizu, T.Otsuka, T.Mizusaki, M.Honma Collective Excitations of Nuclei in the Monte-Carlo Shell Model NUCLEAR STRUCTURE 138,140,142,144,146,148,150Ba; calculated levels, J, π, B(E2). 132Xe; calculated levels, J, π, B(E2), triaxial deformation. Monte Carlo shell model.
doi: 10.1016/S0375-9474(02)00784-4
2001OT06 Prog.Part.Nucl.Phys. 47, 319 (2001) T.Otsuka, M.Honma, T.Mizusaki, N.Shimizu, Y.Utsuno Monte Carlo Shell Model for Atomic Nuclei
doi: 10.1016/S0146-6410(01)00157-0
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