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Search: Author = K.Kaneko

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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
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2023ZH34      Phys.Rev. C 108, 014614 (2023)

J.T.Zhang, P.Ma, Y.Huang, X.L.Tu, P.Sarriguren, Z.P.Li, Y.Kuang, W.Horiuchi, T.Inakura, L.Xayavong, Y.Sun, K.Kaneko, X.Q.Liu, K.Yue, C.J.Shao, Q.Zeng, B.Mei, P.Egelhof, Yu.A.Litvinov, M.Wang, Y.H.Zhang, X.H.Zhou, Z.Y.Sun

Matter radius of 78Kr from proton elastic scattering at 153 MeV

NUCLEAR REACTIONS 1H(78Kr, p), E=152 MeV/nucleon; measured Ep, Ip; deduced σ(θ). 78Kr; deduced point-matter radius, neutron skin thickness. Glauber model analysis. Comparison of the obtained σ to FRESCO calculations with the phenomenological OMP parameters (KD03). Collision in Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou (HIRFL-CSR) with molecular hydrogen-gas target. MICRON double-sided Si-strip detector (DSSD) used to measure the recoil protons.

doi: 10.1103/PhysRevC.108.014614
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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
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2021JI16      Symmetry 13, 2278 (2021)

H.Jian, Y.Gao, F.Dai, J.Liu, X.Xu, C.Yuan, K.Kaneko, Y.Sun, P.Liang, G.Shi, L.Sun, L.Xayavong, C.Lin, J.Lee, Z.Li, Y.Yang, P.Li, R.Fan, S.Zha, H.Zhu, J.Li, Q.Gao, Z.Zhang, R.Chen, J.Wang, D.Wang, H.Wu, K.Wang, Y.Lam, F.Duan, P.Ma, Z.Gao, Q.Hu, Z.Bai, J.Ma, J.Wang, F.Zhong, C.Wu, D.Luo, Y.Jiang, Y.Liu, D.Hou, R.Li, N.Ma, W.Ma, G.Yu, D.Patel, S.Jin, Y.Wang, Y.Yu, Q.Zhou, P.Wang, L.Hu, X.Wang, H.L.Zang, Q.Zhao, L.Yang, P.Wen, F.Yang, H.Jia, G.Zhang, M.Pan, X.Wang, H.Sun, M.Wang, Z.Hu, X.Zhou, Y.Zhang, H.Xu, M.Liu, H.-J.Ong, W.Yang

β-Delayed γ Emissions of 26P and Its Mirror Asymmetry

RADIOACTIVITY 26P(β+), (EC) [from 9Be(32S, X), E=80.6 MeV/nucleon, followed by separation using RIBBL1 at HRIBF, Lanzhou facility]; measured Eγ, Iγ, βγ-coin, T1/2 of 26P decay. 26Si; deduced levels, J, π, β++ϵ feedings, logft, mirror asymmetry parameter from comparison with the ϵ decay of mirror nucleus 26Na to 26Mg, mirror-energy differences (MEDs), and halo structure in 26P. Comparison with shell-model calculations.

NUCLEAR REACTIONS 9Be(32S, X)22Na/23Mg/24Al/25Si/26P/27S, E=80.6 MeV/nucleon; measured reaction products, particle-identification (PID) plot of ΔE vs TOF for the ions separated using RIBBL1 separator at HRIBF, Lanzhou facility.

doi: 10.3390/sym13122278
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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
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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
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2020BH06      J.Phys.(London) G47, 065105 (2020)

B.Bhoy, P.C.Srivastava, K.Kaneko

Shell model results for 47-58Ca isotopes in the fp, fpg9/2 and fpg9/2d5/2 model spaces

NUCLEAR STRUCTURE 47,48,49,50,51,52,53,54,55,56,57,58Ca; calculated energy levels, J, π, occupancy, B(E2), nuclear magnetic moments, spectroscopic factors, wave functions. Comparison with available data.

doi: 10.1088/1361-6471/ab80d4
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2020GO06      Phys.Rev. C 102, 014323 (2020)

A.Gottardo, G.de Angelis, P.Doornenbal, L.Coraggio, A.Gargano, N.Itaco, K.Kaneko, P.Van Isacker, T.Furumoto, G.Benzoni, J.Lee, H.Liu, M.Matsushita, D.Mengoni, V.Modamio-Hoybjor, S.Momiyama, T.Motobayashi, D.R.Napoli, M.Niikura, E.Sahin, Y.Shiga, H.Sakurai, R.Taniuchi, S.Takeuchi, H.Wang, J.J.Valiente-Dobon, R.Avigo, H.Baba, N.Blasi, F.L.Bello Garrote, F.Browne, F.C.L.Crespi, S.Ceruti, R.Daido, M.-C.Delattre, D.Fang, Zs.Dombradi, T.Isobe, I.Kuti, G.Lorusso, K.Matsui, B.Melon, T.Miyazaki, S.Nishimura, R.Orlandi, Z.Patel, S.Rice, L.Sinclair, P.A.Soderstrom, D.Sohler, T.Sumikama, J.Taprogge, Zs.Vajta, H.Watanabe, O.Wieland, J.Wu, Z.Y.Xu, M.Yalcinkaya, R.Yokoyama

Transition strengths in the neutron-rich 73, 74, 75Ni isotopes

NUCLEAR REACTIONS Pb(73Ni, 73Ni'), (74Ni, 74Ni'), (75Ni, 75Ni'), E=215 MeV/nucleon, [secondary cocktail beam from 9Be(238U, F), E=345 MeV/nucleon, and separated by A/Q using the BigRIPS fragment separator at RIBF-RIKEN facility]; measured reaction products identified by the ZeroDegree spectrometer, Eγ, Iγ, (scattered Ni nuclei)γ-coin using the WAS3Abi-EURICA setup with the DALI2 NaI(Tl) array for γ detection. 73,74,75Ni; deduced levels, J, π, B(E2) from Coulomb excitation cross sections. Comparison with large-scale shell model calculations.

doi: 10.1103/PhysRevC.102.014323
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2019JI11      Phys.Rev. C 100, 064316 (2019)

H.Jin, S.Tazaki, K.Kaneko, H.-K.Wang, Y.Sun

High-spin states of the N=82 isotones 136Xe, 137Cs, and 138Ba: Monopole-driven competition of neutron core excitations with two-proton excitations to the h11/2 high-j orbit

NUCLEAR STRUCTURE 136Xe, 137Cs, 138Ba; calculated high-spin levels, J, π, configurations, B(E2), effective single-particle energies (ESPEs), occupation numbers using large-scale shell-model calculations with the extended paring-plus-quadrupole interaction with monopole corrections (EPQQM); deduced a monopole-driven competition between different excitation modes in the high-lying, high-spin states in nuclei above 132Sn, suggesting the importance of neutron core excitation for nuclei across the N=82 closed shell. Comparison with experimental data.

doi: 10.1103/PhysRevC.100.064316
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2019KA19      Nucl.Phys. A986, 107 (2019)

K.Kaneko, Y.Sun, T.Mizusaki, D.G.Jenkins, S.K.Ghorui, S.Tazaki

Large mirror asymmetry in Gamow-Teller β-decay in the A=26 isobaric multiplet

RADIOACTIVITY 26Na, 27Mg, 28Al(β-), 26,27,28P(β+), (EC); compiled experimental mirror asymmetry δ from the ft data for mirror nuclei of A=17-35; deduced large mirror asymmetry between 26P and 26Na; calculated ft, mirror asymmetry in GT β-decay using large-scale shell model including Isospin-NonConserving (INC) forces with introduced T=1, J NOT= 0 INC forces deduced good agreement to the data, whereas usual J=0 INC force does not work. Calculations compared with available data.

doi: 10.1016/j.nuclphysa.2019.03.002
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2019XU13      Phys.Rev. C 100, 051303 (2019)

X.Xu, J.H.Liu, C.X.Yuan, Y.M.Xing, M.Wang, Y.H.Zhang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, R.J.Chen, X.C.Chen, C.Y.Fu, B.S.Gao, J.J.He, S.Kubono, Y.H.Lam, H.F.Li, M.L.Liu, X.W.Ma, P.Shuai, M.Si, M.Z.Sun, X.L.Tu, Q.Wang, H.S.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, P.Zhang, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, S.Naimi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, K.Kaneko, Y.Sun, F.R.Xu

Masses of ground and isomeric states of 101In and configuration-dependent shell evolution in odd-$A$ indium isotopes

ATOMIC MASSES 101In, 101mIn; measured mass excesses using storage-ring based isochronous mass spectrometry technique; deduced energy of the isomeric state. Comparison with systematic values in AME-2016 values. Systematics of 1/2- isomeric states in 101,103,105,107,109,111In, data from the present experiment for 101In and from the ENSDF database for others.

NUCLEAR STRUCTURE 101,103,105,107,109,111,113In; calculated energies of the 1/2- isomeric levels, neutron occupation numbers for 1/2- and 9/2+ levels, neutron effective single-particle energies of ν1g7/2 with respect to ν2d5/2 for 9/2+ and 1/2- levels using state-of-the-art shell-model calculations. Comparison with available experimental data.

NUCLEAR REACTIONS 9Be(112Sn, X)31P/33S/35Cl/37Ar/39K/58Ni/60Cu/62Zn/64Ga/66Ge/68As/70Se/72Br/74Rb/76Rb/78Sr/80Y/89Tc/91Ru/91mRu/93Rh/95Pd/95mPd/97Ag/99Cd/101In/101mIn/103Sn, E=400.88 MeV/nucleon; measured reaction products selected and analyzed by RIBLL2 separator, and revolution time spectrum at the Cooler Storage Ring (CSR) accelerator complex of HIRFL-Lanzhou facility.

doi: 10.1103/PhysRevC.100.051303
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2018KA24      Phys.Rev. C 97, 054326 (2018)

K.Kaneko, Y.Sun, T.Mizusaki

Isoscalar neutron-proton pairing and SU(4)-symmetry breaking in Gamow-Teller transitions

NUCLEAR STRUCTURE 42Sc, 46V, 50Mn, 54Co; calculated cumulative sums of Gamow-Teller transition strengths B(GT) of lowest 1+ states, with separate contributions from each interaction, level energies, B(GT) and overlap between wave functions for the first 0+ and 1+ states. Large-scale shell-model calculations with realistic PMMU Hamiltonian; deduced role of isoscalar T=0, Jπ=1+ np-pairing interaction and SU(4)-symmetry breaking in GT transitions. Comparison with experimental values.

doi: 10.1103/PhysRevC.97.054326
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2017KA01      Nucl.Phys. A957, 144 (2017)

K.Kaneko, Y.Sun, G.de Angelis

Enhancement of high-spin collectivity in N = Z nuclei by the isoscalar neutron-proton pairing

NUCLEAR STRUCTURE 76,78Sr, 80,82Zr, 84,86Mo, 88,90,92Ru; calculated deformation, spin, quadrupole moment, yrast bands, B(E2) using state-of-the-art shell model. Compared with data.

doi: 10.1016/j.nuclphysa.2016.08.007
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2017KA55      Phys.Scr. 92, 114008 (2017)

K.Kaneko, Y.Sun, R.Wadsworth

Shape coexistence and shape transition in self-conjugate nucleus 72Kr and the tensor force

NUCLEAR STRUCTURE 72Kr; calculated energy levels, B(E2), quadrupole moments, occupation numbers. Comparison with available data.

doi: 10.1088/1402-4896/aa8fdc
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2017MO18      Phys.Rev. C 95, 064327 (2017)

A.I.Morales, A.Algora, B.Rubio, K.Kaneko, S.Nishimura, P.Aguilera, S.E.A.Orrigo, F.Molina, G.de Angelis, F.Recchia, G.Kiss, V.H.Phong, J.Wu, D.Nishimura, H.Oikawa, T.Goigoux, J.Giovinazzo, P.Ascher, J.Agramunt, D.S.Ahn, H.Baba, B.Blank, C.Borcea, A.Boso, P.Davies, F.Diel, Zs.Dombradi, P.Doornenbal, J.Eberth, G.de France, Y.Fujita, N.Fukuda, E.Ganioglu, W.Gelletly, M.Gerbaux, S.Grevy, V.Guadilla, N.Inabe, T.Isobe, I.Kojouharov, W.Korten, T.Kubo, S.Kubono, T.Kurtukian Nieto, N.Kurz, J.Lee, S.Lenzi, J.Liu, T.Lokotko, D.Lubos, C.Magron, A.Montaner-Piza, D.R.Napoli, H.Sakurai, H.Schaffner, Y.Shimizu, C.Sidong, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, Y.Takei, M.Tanaka, S.Yagi

Simultaneous investigation of the T=1(Jπ=0+) and T=0(Jπ=9+) β decays in 70Br

RADIOACTIVITY 70Br(β+), (EC) [from 9Be(78Kr, X), E=345 MeV/nucleon at RIKEN's RILAC2-RRC-fRC-IRC-SRC acceleration system using BigRIPS separator and ZeroDegree spectrometer]; measured reaction products, Eγ, Iγ, Eβ, half-life of the 9+ isomer by βγ(t), and 0+ ground state by (70Br)β(t), γγ-, and βγ-coin using Wide-Range Active Silicon Strip Stopper array for β and ion detection (WAS3ABi), and EURICA array for γ detection. 70Se; deduced levels, J, π, β feedings, logf Ft, bands, Ft value for the superallowed decay of 70Br. Comparison with Shell-model calculations using the PMMU and JUN45 interactions. Discussed test of the CVC hypothesis using the data in the present work.

doi: 10.1103/PhysRevC.95.064327
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2017WA03      Phys.Rev. C 95, 011304 (2017)

H.-K.Wang, K.Kaneko, Y.Sun, Y.-Q.He, S.-F.Li, J.Li

Monopole effects, isomeric states, and cross-shell excitations in the A=129 hole nuclei near 132Sn

NUCLEAR STRUCTURE 129Sn, 129In, 129Cd; calculated levels, J, π, predicted cross-shell excited states, monopole effect on the ground-state energies, configurations. Large-scale shell-model calculations for A=129 hole nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.011304
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2017WA45      Phys.Rev. C 96, 054313 (2017)

H.-K.Wang, S.K.Ghorui, K.Kaneko, Y.Sun, Z.H.Li

Large-scale shell-model study for excitations across the neutron N=82 shell gap in 131-133Sb

NUCLEAR STRUCTURE 131,132,133Sb; calculated levels, J, π, cross-shell excitations, configurations, effects of monopole corrections, B(M1), B(E2), B(M2), B(E3), B(M4). Large-scale shell-model calculations with extended paring plus quadrupole-quadrupole force, with additions of monopole corrections (EPQQM model). Comparison with experimental data taken from the ENSDF database.

doi: 10.1103/PhysRevC.96.054313
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2017WU01      Nucl.Phys. A957, 208 (2017)

X.-Y.Wu, S.K.Ghorui, L.-Ju.Wang, K.Kaneko, Y.Sun

Systematical study of high-spin rotational bands in neutron-deficient Kr isotopes by the extended projected shell model

NUCLEAR STRUCTURE 72,74,76,78,80Kr; calculated levels, J, π, rotational bands, yrast band, high spin, moments of inertia vs spin for positive and negative parity bands, B(E2) using extended projected shell model. Compared with available data.

doi: 10.1016/j.nuclphysa.2016.09.003
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2016DE29      Phys.Rev. C 94, 054311 (2016)

D.M.Debenham, M.A.Bentley, P.J.Davies, T.Haylett, D.G.Jenkins, P.Joshi, L.F.Sinclair, R.Wadsworth, P.Ruotsalainen, J.Henderson, K.Kaneko, K.Auranen, H.Badran, T.Grahn, P.Greenlees, A.Herzaan, U.Jakobsson, J.Konki, R.Julin, S.Juutinen, M.Leino, J.Sorri, J.Pakarinen, P.Papadakis, P.Peura, J.Partanen, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, S.Stolze, J.Uusitalo, H.M.David, G.de Angelis, W.Korten, G.Lotay, M.Mallaburn, E.Sahin

Spectroscopy of 70Kr and isospin symmetry in the T=1 fpg shell nuclei

NUCLEAR REACTIONS 40Ca(32S, 2n), E=88 MeV; measured Eγ, (recoil)βγ-correlated events, half-life of 70Kr decay using JUROGAM II array at K130 cyclotron facility in Jyvaskyla. Recoil-β tagging method. 70Kr; deduced levels, J, π, triplet energy differences (TED) and mirror energy differences (MED). Comparison with shell model calculations. Systematics of TED and MED in even A=66, 70, 74 and 78 fpg shell nuclei.

doi: 10.1103/PhysRevC.94.054311
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2015KA46      Phys.Rev. C 92, 044331 (2015)

K.Kaneko, T.Mizusaki, Y.Sun, S.Tazaki

Systematical shell-model calculation in the pairing-plus-multipole Hamiltonian with a monopole interaction for the pf5/2g9/2 shell

NUCLEAR STRUCTURE 64,65,66,67,68,69,70,71,72,73,74,75,76Ni, 64,65,66,67,68,69,70,71,72,73,74,75,76,77,78Cu, 65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80Zn, 66,67,68,69,70,71,72,73,74,75,76,77,78,79,80Ga, 69,70,71,72,73,74,75,76,77,78,79,80Ge, 67,68,69,70,71,72,73,74,75,76,77,78As, 73,74,75,76,77,78,79,80Se; calculated binding energies, effective single-particle energies of proton orbits for Cu isotopes, level energies of low-lying, low spin states and B(E2) values in even- and odd-A isotopes, neutron g9/2 and proton p3/2 occupancies for low lying states in Ge isotopes, magnetic moments and electric quadrupole moments of Cu, Ga, and Ge isotopes. 64,66,68,69,70,71,72,73,74,75,76Ge, 68,69,70,71,72,73,74Se; calculated low- and high-spin levels, J, π, B(E2). Shell-model calculations with a pairing-plus-multipole Hamiltonian and monopole-based universal force interaction (PMMU model) for the pf5/2g9/2 shell nuclei. Comparison with experimental and evaluated data.

doi: 10.1103/PhysRevC.92.044331
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2015WA07      Phys.Rev. C 91, 021303 (2015)

H.-K.Wang, K.Kaneko, Y.Sun

Quenching of the neutron N=82 shell gap near 120Sr with monopole-driving core excitations

NUCLEAR STRUCTURE 118Kr, 120Sr, 122Zr, 124Mo, 126Ru, 128Pd, 130Cd; calculated energies of the first 2+ states with and without neutron core excitation (NCE), and with and without the M2 monopole correction, B(E2) for first 2+ states. 120Sr; calculated energies of excited 2+ states. 130In; calculated negative-, and positive-parity members of the πg9/2νh11/2 multiplet. Large-scale shell-model calculations using extended pairing plus quadrupole-quadrupole forces accompanied by the monopole interaction (EPQQM). Discussed shell-quenching mechanism. Comparison with available experimental data.

doi: 10.1103/PhysRevC.91.021303
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2014HE29      Phys.Rev. C 90, 051303 (2014)

J.Henderson, D.G.Jenkins, K.Kaneko, P.Ruotsalainen, P.Sarriguren, K.Auranen, M.A.Bentley, P.J.Davies, A.Gorgen, T.Grahn, P.T.Greenlees, A.Hay, T.W.Henry, A.Herzan, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Leino, C.McPeake, S.Milne, A.J.Nichols, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, E.Sahin, M.Sandzelius, J.Saren, C.Scholey, M.Siciliano, L.Sinclair, J.Sorri, S.Stolze, J.Uusitalo, R.Wadsworth, M.Zielinska

Spectroscopy on the proton drip-line: Probing the structure dependence of isospin nonconserving interactions

NUCLEAR REACTIONS 40Ca(36Ar, 2n)74Sr, E=105 MeV; measured Eγ, Iγ, γγ-coin, Eβ, ΔE-E, TOF, half-lives of 74Sr and 74Rb ground states using RITU separator and JUROGAM II array at Jyvaskyla K130 cyclotron facility. Recoil-beta tagging technique. 74Sr, 74Rb; deduced levels, J, π, T=1 triplet energy differences (TEDs) for 74Sr, 74Rb and 74Kr. Comparison with State-of-the-art shell-model calculations using the JUN45 interaction, and isospin nonconserving (INC) interaction.

RADIOACTIVITY 74Sr, 74Rb(β+)[from 40Ca(36Ar, X), E=105 MeV]; measured half-lives of ground states.

doi: 10.1103/PhysRevC.90.051303
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2014KA03      Phys.Rev. C 89, 011302 (2014)

K.Kaneko, T.Mizusaki, Y.Sun, S.Tazaki

Toward a unified realistic shell-model Hamiltonian with the monopole-based universal force

NUCLEAR STRUCTURE Z=20-28, A=42-64; calculated binding energies and fitted with experimental values for 95 nuclides. 42,44,46,48,50,52,54,56,58Ca, 44,46,48,50,52,54,56,58,60Ti, 48,50,52,54,56,58,60,62Cr, 52,54,56,58,60,62,64Fe, 56,58,60,62,64,66,68,70,72,74Ni, 60,62,64,66,68,70,72,74,76,78,80Zn, 64,66,68,70,72,74,76,78,80,82Ge, 68,70,72,74,76,78,80,82,84Se; calculated energies and B(E2) for first 2+ levels. 55Co, 56Ni, 69,72Ge; calculated levels, J, π. Unified realistic shell-model Hamiltonian employing pairing plus multipole Hamiltonian combined with monopole interaction (PMMU model). Comparison with experimental data.

doi: 10.1103/PhysRevC.89.011302
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2014KA08      Phys.Rev. C 89, 031302 (2014)

K.Kaneko, Y.Sun, T.Mizusaki, S.Tazaki

Isospin nonconserving interaction in the T=1 analogue states of the mass-70 region

NUCLEAR STRUCTURE A=66-78; calculated mirror energy differences (MEDs) and triplet energy differences (TEDs) for even-even nuclei in the T=1 analog states; calculated Coulomb energy differences for N=Z nuclei 66As-66Ge, 70Br-70Se, 74Rb-74Kr, and 78Y-78Sr. Large-scale shell-model calculations. Effect of isospin nonconserving (INC) nuclear force for the upper fp-shell region. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.031302
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2014NI09      Phys.Lett. B 733, 52 (2014)

A.J.Nichols, R.Wadsworth, H.Iwasaki, K.Kaneko, A.Lemasson, G.de Angelis, V.M.Bader, T.Baugher, D.Bazin, M.A.Bentley, J.S.Berryman, T.Braunroth, P.J.Davies, A.Dewald, C.Fransen, A.Gade, M.Hackstein, J.Henderson, D.G.Jenkins, D.Miller, C.Morse, I.Paterson, E.C.Simpson, S.R.Stroberg, D.Weisshaar, K.Whitmore, K.Wimmer

Collectivity in A ∼ 70 nuclei studied via lifetime measurements in 70Br and 68, 70Se

NUCLEAR REACTIONS 9Be(71Br, 70Br'), (70Se, 68Se'), (70Se, 70Se'), E < 150 MeV/nucleon; measured reaction products, Eγ, Iγ. 70Br, 68,70Se; deduced energy levels, J, π, B(Eλ). Comparison with shell model calculations using GXPF1 nuclear interaction, available data.

doi: 10.1016/j.physletb.2014.04.016
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2014SH14      Phys.Lett. B 735, 327 (2014)

P.Shuai, H.S.Xu, X.L.Tu, Y.H.Zhang, B.H.Sun, M.Wang, Yu.A.Litvinov, K.Blaum, X.H.Zhou, J.J.He, Y.Sun, K.Kaneko, Y.J.Yuan, J.W.Xia, J.C.Yang, G.Audi, X.L.Yan, X.C.Chen, G.B.Jia, Z.G.Hu, X.W.Ma, R.S.Mao, B.Mei, Z.Y.Sun, S.T.Wang, G.Q.Xiao, X.Xu, T.Yamaguchi, Y.Yamaguchi, Y.D.Zang, H.W.Zhao, T.C.Zhao, W.Zhang, W.L.Zhan

Charge and frequency resolved isochronous mass spectrometry and the mass of 51Co

ATOMIC MASSES 51Co, 34Ar; measured revolution frequencies; deduced mass excess values. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2014.06.046
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2014TU01      J.Phys.(London) G41, 025104 (2014)

X.L.Tu, Y.Sun, Y.H.Zhang, H.S.Xu, K.Kaneko, Y.A.Litvinov, M.Wang

A survey of Coulomb displacement energies and questions on the anomalous behavior in the fp-shell

NUCLEAR STRUCTURE 69Br, 69Se, 5Li, 5He; calculated Coulomb displacement energy. Shell model, GXPF1A, JUN45 effective interactions, comparison with available data.

doi: 10.1088/0954-3899/41/2/025104
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2014WA21      Phys.Rev. C 89, 064311 (2014)

H.-K.Wang, K.Kaneko, Y.Sun

Isomerism and persistence of the N=82 shell closure in the neutron-rich 132Sn region

NUCLEAR STRUCTURE 124Mo, 126Ru, 126,128Pd, 130Cd; calculated levels, J, π, B(E2) using large-scale shell model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.064311
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2013JI04      Phys.Rev. C 87, 044327 (2013)

H.Jin, Y.Sun, K.Kaneko, S.Tazaki

Shell model description with neutron g9/2 excitation for neutron-rich 57-62Mn isotopes

NUCLEAR STRUCTURE 57,58,59,60,61,62Mn; calculated levels, J, π, bands, configurations, B(M1), B(E2), moments of inertia, neutron occupation numbers. Large-scale shell model calculations. Discussed neutron g9/2 excitations. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.044327
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2013KA15      Phys.Rev.Lett. 110, 172505 (2013)

K.Kaneko, Y.Sun, T.Mizusaki, S.Tazaki

Variation in Displacement Energies Due to Isospin-Nonconserving Forces

NUCLEAR STRUCTURE A=42-95; calculated Coulomb and triplet displacement energies, one- and two-proton separation energies; deduced importance of isospin-nonconserving forces. Large scale shell model calculation, GXPF1A and JUN45 effective interactions.

doi: 10.1103/PhysRevLett.110.172505
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2013RU10      Phys.Rev. C 88, 024320 (2013)

P.Ruotsalainen, C.Scholey, R.Julin, K.Hauschild, K.Kaneko, B.S.Nara Singh, R.Wadsworth, D.G.Jenkins, T.S.Brock, P.T.Greenlees, J.Henderson, U.Jakobsson, P.Jones, S.Juutinen, S.Ketelhut, M.Leino, N.M.Lumley, P.J.R.Mason, P.Nieminen, M.Nyman, I.Paterson, P.Peura, M.G.Procter, P.Rahkila, J.Saren, J.Sorri, J.Uusitalo

Recoil-β tagging study of the N=Z nucleus 66As

NUCLEAR REACTIONS 40Ca(28Si, np), E=75, 83 MeV; measured reaction products, Eγ, Iγ, γ(θ), γγ(θ)(ADO ratios), βγ-, (recoil)βγ-, γγ-coin, isomer half-lives by γγ(t) using RITU separator, GREAT spectrometer and JUROGAM II array at Jyvaskyla facility. Recoil-beta tagging (RBT) and recoil-isomer tagging methods. 66As; deduced high-spin levels, isomers, J, π, T=1 band, T=0 states, conversion coefficients, multipolarity, configuration, B(E2), B(M1), oblate 3+ shape isomer. 64Zn, 65Ga, 66Ge; observed γ rays from low-lying states. Systematics of Coulomb energy differences (CEDs) for A=66, 70, 74, and 78 systems. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.88.024320
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2013WA27      Phys.Rev. C 88, 054310 (2013)

H.-K.Wang, Y.Sun, H.Jin, K.Kaneko, S.Tazaki

Structure analysis for hole-nuclei close to 132Sn by a large-scale shell-model calculation

NUCLEAR STRUCTURE 130Cd, 130,131In, 130,131Sn; calculated levels, J, π, configurations by large-scale shell-model calculations using computer code NUSHELLX. Comparison with experimental data taken from ENSDF database.

doi: 10.1103/PhysRevC.88.054310
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2012DE05      Phys.Rev. C 85, 034320 (2012)

G.de Angelis, K.T.Wiedemann, T.Martinez, R.Orlandi, A.Petrovici, E.Sahin, J.J.Valiente-Dobon, D.Tonev, S.Lunardi, B.S.Nara Singh, R.Wadsworth, A.Gadea, K.Kaneko, P.G.Bizzeti, A.M.Bizzeti-Sona, B.Blank, A.Bracco, M.P.Carpenter, C.J.Chiara, E.Farnea, A.Gottardo, J.P.Greene, S.M.Lenzi, S.Leoni, C.J.Lister, D.Mengoni, D.R.Napoli, O.L.Pechenaya, F.Recchia, W.Reviol, D.G.Sarantites, D.Seweryniak, C.A.Ur, S.Zhu

Shape isomerism and shape coexistence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighboring T=1 multiplets

NUCLEAR REACTIONS 40Ca(32S, npα)66As, E=90 MeV; measured Eγ, Iγ, γ(θ), angular asymmetry ratios, (particle)nγ-, γγ-coin, particle and neutron spectra, isomer half-life using Gammasphere array at ATLAS facility. 66As; deduced levels, J, π, shape isomer, B(E2), isospin=1 states, Coulomb energy differences (CED); calculated neutron single-particle energies. Breaking of isospin symmetry and correlations induced by the Coulomb interaction. Comparison with shell model and Complex excited Vampir calculations.

doi: 10.1103/PhysRevC.85.034320
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2012KA26      Phys.Rev.Lett. 109, 092504 (2012)

K.Kaneko, T.Mizusaki, Y.Sun, S.Tazaki, G.de Angelis

Coulomb Energy Difference as a Probe of Isospin-Symmetry Breaking in the Upper fp-Shell Nuclei

NUCLEAR STRUCTURE 66As, 66Ge, 70Br, 70Se, 74Rb, 74Kr, 78Y, 78Sr; calculated Coulomb energy differences; deduced isospin-symmetry breaking. Shell model calculations, Sakurai-Sugiura algorithm, comparison with available data.

doi: 10.1103/PhysRevLett.109.092504
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2012SU07      Phys.Rev. C 85, 054307 (2012)

Y.Sun, Y.-C.Yang, H.Jin, K.Kaneko, S.Tazaki

Projected shell model study for neutron-rich, odd-odd Mn isotopes

NUCLEAR STRUCTURE 58,60,62Mn; calculated levels, J, π, bands, configurations, and moments of inertia with projected shell model and Nilsson model. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.054307
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2011HA03      Phys.Lett. B 696, 197 (2011)

M.Hasegawa, Y.Sun, S.Tazaki, K.Kaneko, T.Mizusaki

Characteristics of the 2 1/2+ isomer in 93Mo: Toward the possibility of enhanced nuclear isomer decay

NUCLEAR STRUCTURE 93Mo, 93Tc, 95Ru; calculated excitation energy, structure of yrast states, B(E4), B(E2), B(M1). Microscopic shell model calculations, comparison with experimental data.

doi: 10.1016/j.physletb.2010.10.065
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2011JI10      Phys.Rev. C 84, 044324 (2011)

H.Jin, M.Hasegawa, S.Tazaki, K.Kaneko, Y.Sun

Large-scale shell-model calculation with core excitations for neutron-rich nuclei beyond 132Sn

NUCLEAR STRUCTURE 133,134Sn, 133,134Sb, 134,135Te, 135I; calculated levels, J, π, B(E2), B(M1) values. Large scale shell-model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.044324
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2011KA03      Phys.Rev. C 83, 014320 (2011)

K.Kaneko, Y.Sun, T.Mizusaki, M.Hasegawa

Shell-model study for neutron-rich sd-shell nuclei

NUCLEAR STRUCTURE 35Si, 36,37,38,40,42,43,44,46S, 38,39,40,42,43,44,45,46,47,48Ar, 41,49Ca, 47K; calculated levels, J, π. 40Mg, 34,36,38,40,42,44,46,48,50,52Si, 36,38,40,42,44,46,48,50,52,54S, 38,40,42,44,46,48,50,52,54,56Ar, 40,42,44,46,48,50,52,54,56,58Ca; calculated energies of first 2+ states. Z=20, N=20-40; calculated effective proton single-particle energies. Z=8-20, N=20; calculated effective neutron single-particle energies. 36,38,40,42Si, 36,38,40,42,44S, 38,40,42,44,46Ar; calculated B(E2) values for first 2+ states. 40Mg, 42Si, 44S, 44,46Ar, 48Ca; calculated spectroscopic quadrupole moments of first 2+ states. 35,37,39,41,43P, 37,39,41,43,45Cl, 39,41,43,45,47,49K; calculated 3/2+ to 1/2+ splittings. 41Si, 43S, 45Ar, 47Ca; calculated 7/2- to 3/2- splittings. Spherical shell model in the sd-pf valence space with the extended pairing plus quadrupole-quadrupole forces accompanied by the monopole interaction (EPQQM). Comparison with experimental data for sd-shell nuclei.

doi: 10.1103/PhysRevC.83.014320
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2011KA07      Acta Phys.Pol. B42, 439 (2011)

K.Kaneko, S.Tazaki, T.Mizusaki, Y.Sun, M.Hasegawa, G.de Angelis

Mirror Energy Difference at High Spins in the Mirror Pair 67Se and 67As

NUCLEAR STRUCTURE 67Se, 67As; calculated mirror energy difference for high-spin states. Comparison with all available data.

doi: 10.5506/APhysPolB.42.439
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2011MI01      Acta Phys.Pol. B42, 447 (2011)

T.Mizusaki, K.Kaneko, M.Honma, T.Sakurai

Filter Diagonalization: A New Method for Large-scale Shell-model Calculations

NUCLEAR STRUCTURE 48Cr, 66As, 66Ge; calculated mirror energy differences due to small isospin breaking. Filter diagonalization method.

doi: 10.5506/APhysPolB.42.447
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2010KA32      Phys.Rev. C 82, 061301 (2010)

K.Kaneko, S.Tazaki, T.Mizusaki, Y.Sun, M.Hasegawa, G.de Angelis

Isospin symmetry breaking at high spins in the mirror pair 67Se and 67As

NUCLEAR STRUCTURE 67Se, 67As; calculated levels, J, π, mirror energy differences (MED), occupation numbers for proton and neutron orbits, spin distribution in each and spectroscopic quadrupole moments at high spins using large-scale shell-model approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.82.061301
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2010MI16      Phys.Rev. C 82, 024310 (2010)

T.Mizusaki, K.Kaneko, M.Honma, T.Sakurai

Filter diagonalization of shell-model calculations

NUCLEAR STRUCTURE 48Cr; calculated yrast state energies and M1 strength functions using Sakurai and Sugiura (SS)+shifted complex orthogonal conjugate gradient (COCG) method of filter diagonalization for shell-model calculations.

doi: 10.1103/PhysRevC.82.024310
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2010SU05      Phys.Rev. C 81, 024309 (2010)

M.Sugawara, Y.Toh, M.Oshima, M.Koizumi, A.Kimura, A.Osa, Y.Hatsukawa, H.Kusakari, J.Goto, M.Honma, M.Hasegawa, K.Kaneko

Medium-spin states in 70Ge and the role of the g9/2 orbital

NUCLEAR REACTIONS 60Ni(12C, 2p), E=45 MeV; measured Eγ, Iγ, γγ-coin, and γ(θ). 70Ge; deduced levels, J, π, multipolarity, and bands. Comparison with shell model calculations using G-matrix and EPQQM interactions, and with structures of 66,68Ge.

doi: 10.1103/PhysRevC.81.024309
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2010YA17      Phys.Rev. C 82, 031304 (2010)

Y.Yang, Y.Sun, K.Kaneko, M.Hasegawa

Rotation alignment in neutron-rich Cr isotopes: A probe of deformed single-particle levels across N=40

NUCLEAR STRUCTURE 54,56,58,60,62,64,66,68Cr; calculated moments of inertia of yrast bands, and energies of yrast, 2-qp and 4-qp configurations using projected shell model (PSM). Comparison with experimental data.

doi: 10.1103/PhysRevC.82.031304
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2009SU20      Phys.Rev. C 80, 054306 (2009)

Y.Sun, Y.-C.Yang, H.-L.Liu, K.Kaneko, M.Hasegawa, T.Mizusaki

Projected shell model description for high-spin states in neutron-rich Fe isotopes

NUCLEAR STRUCTURE 58,60,62,64,66,68Fe; calculated levels, J, moment of inertia, B(E2), deformation parameters, yrast band structures using projected shell-model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.054306
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2008KA19      Phys.Rev. C 77, 064304 (2008); Erratum Phys.Rev. C 78, 049903 (2008)

K.Kaneko, Y.Sun, M.Hasegawa, T.Mizusaki

Structure of upper-g9/2-shell nuclei and shape effect in the 94Ag isomeric states

NUCLEAR STRUCTURE 94Ag; calculated levels, J, π, spectroscopic quadrupole moments, expectation values of proton and neutron numbers, B(E2). 90,91,92,93,94Ru, 91,92,93Tc, 90,92,93,94,95Rh, 92,93,94,95,96Pd, 95Ag, 96,98Cd; calculated level energies, J, π. Comparison with experimental data.

doi: 10.1103/PhysRevC.77.064304
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2008KA41      Phys.Rev. C 78, 064312 (2008)

K.Kaneko, Y.Sun, M.Hasegawa, T.Mizusaki

Shell model study of single-particle and collective structure in neutron-rich Cr isotopes

NUCLEAR STRUCTURE 52,53,54,55,56,57,58,59,60,62Cr; calculated B(E2), levels, single-particle energies. Spherical shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.78.064312
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2007HA35      Nucl.Phys. A789, 46 (2007)

M.Hasegawa, T.Mizusaki, K.Kaneko, Y.Sun

Enhancement of B(E2)↑ and low excitation of the second 0+ state near N = 40 in Ge isotopes

NUCLEAR STRUCTURE 70,72,74Ge; calculated B(E2) using large scale shell model calculations. Compared results to available data.

doi: 10.1016/j.nuclphysa.2007.02.012
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2007HA48      Phys.Lett. B 656, 51 (2007)

M.Hasegawa, K.Kaneko, T.Mizusaki, Y.Sun

Phase transition in exotic nuclei along the N = Z line

NUCLEAR STRUCTURE 64Ge, 66As, 68Se, 70Br, 72,74,76Kr, 74Rb, 76Sr; calculated levels, J, π, B(E2); deduced configurations, shape co-existence. Large-scale shell model calculations and comparison with data.

doi: 10.1016/j.physletb.2007.09.017
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2007KA21      Phys.Rev. C 75, 044304 (2007)

K.Kaneko, A.Schiller

Spin distribution of nuclear levels using the static path approximation with the random-phase approximation

NUCLEAR STRUCTURE 56Fe; calculated spin distribution of the level density, and various thermal properties using static path approximation plus random phase approximation, compared results to available data.

doi: 10.1103/PhysRevC.75.044304
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2007KA61      Phys.Rev. C 76, 064306 (2007)

K.Kaneko, A.Schiller

Particle-number conservation in static-path approximation for thermal superfluid systems

NUCLEAR STRUCTURE 56Fe, 94Mo, 172Yb; calculated heat capacity, breakdown of pairing correlations, particle number projection method.

doi: 10.1103/PhysRevC.76.064306
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2007MI19      Acta Phys.Pol. B38, 1363 (2007)

T.Mizusaki, K.Kaneko, M.Hasegawa

Shell Model Approach to Proton - Neutron Alignment in N ∼ Z Ge - As Nuclei

NUCLEAR STRUCTURE 66Ge, 62,63Ga; calculated level energies, J, π using the nuclear shell model.

2006KA39      Phys.Rev. C 74, 024321 (2006); Erratum Phys.Rev. C 74, 049901 (2006)

K.Kaneko, M.Hasegawa, T.Mizusaki, Y.Sun

Magicity and occurrence of a band with enhanced B(E2) in neutron-rich nuclei 68Ni and 90Zr

NUCLEAR STRUCTURE 64,66,68Ni, 86Kr, 88Sr, 90Zr; calculated levels, J, π, B(E2), configurations; deduced shell closure features.

doi: 10.1103/PhysRevC.74.024321
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2006KA40      Phys.Rev. C 74, 024325 (2006)

K.Kaneko, M.Hasegawa, U.Agvaanluvsan, E.Algin, R.Chankova, M.Guttormsen, A.C.Larsen, G.E.Mitchell, J.Rekstad, A.Schiller, S.Siem, A.Voinov

Breaking of nucleon Cooper pairs at finite temperature in 93-98Mo

NUCLEAR STRUCTURE 93,94,95,96,97,98Mo; calculated level densities, heat capacities, pair correlation features.

doi: 10.1103/PhysRevC.74.024325
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2005HA06      Nucl.Phys. A748, 393 (2005)

M.Hasegawa, K.Kaneko

Microscopic analysis of T=1 and T=0 proton-neutron correlations in N=Z nuclei

NUCLEAR STRUCTURE 20Ne, 22Na, 24Mg, 26Al, 28Si, 30P, 32S; calculated relative binding energies, interaction energies, proton-neutron correlation energies.

doi: 10.1016/j.nuclphysa.2004.11.014
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2005HA19      Phys.Rev. C 71, 044301 (2005)

M.Hasegawa, K.Kaneko, T.Mizusaki

Particle alignments and shape change in 66Ge and 68Ge

NUCLEAR STRUCTURE 66,68Ge; calculated levels, J, π, rotational bands, B(E2), B(M1), configurations, deformation. Shell model.

doi: 10.1103/PhysRevC.71.044301
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2005HA30      Phys.Lett. B 617, 150 (2005)

M.Hasegawa, Y.Sun, K.Kaneko, T.Mizusaki

Structure of isomeric states in 66As and 67As

NUCLEAR STRUCTURE 66,67As; calculated levels, J, π, isomeric states, shape coexistence features. Spherical shell model.

doi: 10.1016/j.physletb.2005.05.027
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2005HA33      Prog.Theor.Phys.(Kyoto) 113, 1215 (2005)

M.Hasegawa, K.Kaneko

An Alternative Understanding of Mass Formulas in Terms of Nuclear Structure

doi: 10.1143/PTP.113.1215
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2005HA70      Phys.Rev. C 72, 064320 (2005)

M.Hasegawa, K.Kaneko, T.Mizusaki

Unique features of structure in an odd-proton N ≈ Z nucleus 69As

NUCLEAR STRUCTURE 69As; calculated levels, J, π, configurations, deformation. Large-scale shell model approach, comparison with data.

doi: 10.1103/PhysRevC.72.064320
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2005KA04      Phys.Rev. C 71, 014319 (2005)

K.Kaneko, R.F.Casten, M.Hasegawa, T.Mizusaki, J.-y.Zhang, E.A.McCutchan, N.V.Zamfir, R.Krucken

Anomalous behavior of the first excited 0+ state in N ≈ Z nuclei

NUCLEAR STRUCTURE Ne, Mg, Ti, Cr, Fe; analyzed excited states energies; deduced role of proton-neutron correlations in anomalous behavior.

doi: 10.1103/PhysRevC.71.014319
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2005KA28      Phys.Rev. C 72, 024307 (2005)

K.Kaneko, M.Hasegawa

Quenching of pairing gap at finite temperature in 184W

NUCLEAR STRUCTURE 183,184,185W; analyzed level densities. 184W deduced pairing gap vs temperature, quenching at critical temperature. Comparison with model predictions.

doi: 10.1103/PhysRevC.72.024307
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2005KA37      Phys.Rev. C 72, 031302 (2005)

K.Kaneko, M.Hasegawa

Proton-neutron pairing energies in N = Z nuclei at finite temperature

NUCLEAR STRUCTURE 18F, 22Na, 26Al, 30P, 34Cl, 38K, 42Sc, 46V, 50Mn; calculated isoscalar and isovector proton-neutron pair gaps at finite temperature. Shell model.

doi: 10.1103/PhysRevC.72.031302
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2005KA53      Phys.Rev. C 72, 061306 (2005)

K.Kaneko, M.Hasegawa

Contour integral method for thermal and quantal fluctuations

doi: 10.1103/PhysRevC.72.061306
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2004HA15      Phys.Rev. C 69, 034324 (2004)

M.Hasegawa, K.Kaneko, T.Mizusaki, S.Tazaki

Different particle alignments in N ≈ Z Ru isotopes studied by the shell model

NUCLEAR STRUCTURE 88,89,90,91,92,93,94Ru; calculated levels, J, π, B(E2), rotational bands features. Shell model, pairing-plus-quadrupole-quadrupole interaction. Comparison with data.

doi: 10.1103/PhysRevC.69.034324
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2004HA43      Phys.Rev. C 70, 031301 (2004)

M.Hasegawa, K.Kaneko, T.Mizusaki

Proton-neutron alignment in the yrast states of 66Ge and 68Ge

NUCLEAR STRUCTURE 66,68Ge; calculated levels, J, π, rotational bands, particle alignment features. Comparison with data.

doi: 10.1103/PhysRevC.70.031301
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2004KA31      Phys.Rev. C 69, 061302 (2004)

K.Kaneko, M.Hasegawa

Competition between isoscalar and isovector pairing correlations in N = Z nuclei

NUCLEAR STRUCTURE A=12-108; calculated isoscalar and isovector pairing correlations, energy level differences for N=Z nuclides.

doi: 10.1103/PhysRevC.69.061302
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2004KA36      Nucl.Phys. A740, 95 (2004)

K.Kaneko, M.Hasegawa

Pairing transition of nuclei at finite temperature

NUCLEAR STRUCTURE 27,28,29Mg; calculated odd-even mass difference vs temperature. 20O, 28Mg, 64Fe, 162Dy, 166Er, 172Yb; calculated neutron pair gap vs temperature, pairing transition features.

doi: 10.1016/j.nuclphysa.2004.05.001
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2004KA57      Phys.Rev. C 70, 051301 (2004)

K.Kaneko, M.Hasegawa, T.Mizusaki

Shape transition and oblate-prolate coexistence in N=Z fpg-shell nuclei

NUCLEAR STRUCTURE 60Zn, 64Ge, 68Se, 72Kr; calculated levels, J, π, quadrupole moments, configurations, potential energy surfaces, shape coexistence features. Shell-model and constrained Hartree-Fock model calculations, comparison with data.

doi: 10.1103/PhysRevC.70.051301
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2003HA03      Phys.Rev. C 67, 024304 (2003)

M.Hasegawa, K.Kaneko

Effects of resonant single-particle states on pairing correlations

doi: 10.1103/PhysRevC.67.024304
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2003KA18      Phys.Rev. C 67, 041306 (2003)

K.Kaneko, M.Hasegawa

α decay and proton-neutron correlations

NUCLEAR STRUCTURE Z=84-100; analyzed binding energies, Qα, related features; deduced correlation between proton-neutron pairing and α-decay widths.

doi: 10.1103/PhysRevC.67.041306
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2002HA35      Prog.Theor.Phys.(Kyoto) 107, 731 (2002)

M.Hasegawa, K.Kaneko, S.Tazaki

Applicability of the Extended P + QQ Model in the Upper Part of the f7/2 Shell

NUCLEAR STRUCTURE 48Ca, 52Cr, 52,53Mn, 52,53,54Fe, 54Co, 56Ni; calculated levels, J, π. 51,52Mn, 52Cr, 53Fe; calculated μ, quadrupole moments, B(E2), B(M1). Extended pairing-plus-quadrupole model, comparison with data.

doi: 10.1143/PTP.107.731
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2002KA60      Phys.Rev. C 66, 051306 (2002)

K.Kaneko, M.Hasegawa, T.Mizusaki

Quadrupole and octupole softness in the N=Z nucleus 64Ge

NUCLEAR STRUCTURE 64Ge; calculated levels, J, π, quadrupole and octupole correlations. Shell model.

doi: 10.1103/PhysRevC.66.051306
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2001HA28      Nucl.Phys. A688, 765 (2001)

M.Hasegawa, K.Kaneko, S.Tazaki

Improvement of the Extended P + QQ Interaction by Modifying the Monopole Field

NUCLEAR STRUCTURE 48Ca, 47,50Ti, 47V, 49,51Cr, 50,51Mn; calculated levels, J, quadrupole moments, B(E2). A=42-51; calculated ground-state energies. Extended pairing-plus-quadrupole interaction, comparisons with data.

doi: 10.1016/S0375-9474(00)00602-3
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2001KA15      Prog.Theor.Phys.(Kyoto) 105, 219 (2001)

K.Kaneko, M.Hasegawa

Single and Double β Decay in N ≈ Z Nuclei

NUCLEAR STRUCTURE 42Sc, 44,45,46,47,48Ti, 46V, 48Cr, 50Mn, 52Fe, 54Co; calculated β-decay integrated Gamow-Teller strengths. 68,70,72,74,76,78,80Ge, 70,72,74,76,78,80,82Se; calculated 2ν-accompanied 2β-decay Gamow-Teller strengths.

doi: 10.1143/PTP.105.219
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2001KA63      Prog.Theor.Phys.(Kyoto) 106, 1179 (2001)

K.Kaneko, M.Hasegawa

Global Features of Proton-Neutron Interactions

doi: 10.1143/PTP.106.1179
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2000HA13      Phys.Rev. C61, 037306 (2000)

M.Hasegawa, K.Kaneko

Roles of Proton-Neutron Interactions in α-Like Four-Nucleon Correlations

doi: 10.1103/PhysRevC.61.037306
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2000HA32      Nucl.Phys. A674, 411 (2000); Erratum Nucl.Phys. A691, 791 (2001)

M.Hasegawa, K.Kaneko, S.Tazaki

Application of the Extended P + QQ Force Model to N ≈ Z fp Shell Nuclei

NUCLEAR STRUCTURE 46Ti, 46,48V, 48,50Cr, 50Mn; calculated levels, J, π, quadrupole moments, transitions B(E2). Extended pairing plus QQ force model, comparisons with data.

doi: 10.1016/S0375-9474(00)00171-8
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1999HA07      Phys.Rev. C59, 1449 (1999)

M.Hasegawa, K.Kaneko

Extension of the Pairing Plus Quadrupole Force Model to N ≈ Z Nuclei

NUCLEAR STRUCTURE 94Pd, 89Tc; calculated levels, J, π. Z=20-25; calculated valence nucleon energies; deduced neutron-proton interaction role. Extended pairing-plus-quadrupole model.

doi: 10.1103/PhysRevC.59.1449
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1999KA02      Phys.Rev. C59, 740 (1999)

K.Kaneko, M.Hasegawa, J.-Y.Zhang

Isoscalar and Isovector Pair Correlations in an Isospin-Invariant Pairing Plus Quadrupole Model

doi: 10.1103/PhysRevC.59.740
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1999KA37      Phys.Rev. C60, 024301 (1999)

K.Kaneko, M.Hasegawa

Proton-Neutron Interactions in N ∼ Z Nuclei

NUCLEAR STRUCTURE Nb, Mo, Tc, Pd, Sn, Ti, Cr, Ca, Fe; analyzed binding energies, odd-even mass differences, two-proton separation energies for N ∼ Z nuclei; deduced role of neutron-proton interactions.

doi: 10.1103/PhysRevC.60.024301
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1998KA13      Phys.Rev. C57, 1732 (1998)

K.Kaneko, J.-Y.Zhang

Cranking Model with Proton-Neutron Correlations

doi: 10.1103/PhysRevC.57.1732
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1994KA14      Phys.Rev. C49, 2805 (1994)


Ideal Quarks and Mesons in the Relativistic Quark Model

doi: 10.1103/PhysRevC.49.2805
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1994KA15      Phys.Rev. C49, 3014 (1994)


Self-Consistent Collective Coordinate Method in Nuclear Rotation and Wobbling Motion at High Spin

doi: 10.1103/PhysRevC.49.3014
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1979TA27      Prog.Theor.Phys.(Kyoto) 62, 440 (1979)

K.Takada, S.Tazaki, K.Kaneko

Dynamical Anharmonicity Effects in Low-Lying Negative-Parity States of Odd-Mass Sn Isotopes

NUCLEAR STRUCTURE 111,113,115,117,119,121Sn; calculated levels; deduced anharmonicity effects. Quasiparticle shell-model.

doi: 10.1143/PTP.62.440
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