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NSR database version of May 10, 2024.

Search: Author = K.Higashiyama

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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
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2022YA13      Phys.Rev. C 105, 044325 (2022)

A.Yagi, A.Odahara, H.Nishibata, R.Lozeva, C.-B.Moon, S.Nishimura, K.Yoshida, N.Yoshinaga, C.Watanabe, K.Higashiyama, T.Shimoda, R.Daido, Y.Fang, P.S.Lee, B.Moon, P.Doornenbal, G.Lorusso, P.-A.Soderstrom, T.Sumikama, H.Watanabe, T.Isobe, H.Baba, H.Sakurai, F.Browne, Z.Patel, S.Rice, L.Sinclair, J.Wu, Z.Y.Xu, R.Yokoyama, T.Kubo, N.Inabe, H.Suzuki, N.Fukuda, D.Kameda, H.Takeda, D.S.Ahn, Y.Shimizu, D.Murai, F.L.Bello Garrote, J.-M.Daugas, F.Didierjean, E.Ideguchi, S.Iimura, T.Ishigaki, H.S.Jung, T.Komatsubara, Y.K.Kwon, C.S.Lee, S.Morimoto, M.Niikura, I.Nishizuka, K.Tshoo

Various nuclear structures in 140Xe studied by β decay of ground and isomeric states in 140I

RADIOACTIVITY 140,140mI, 140Te(β-)[from 9Be(238U, X), E=345 MeV/nucleon];measured Eβ, Iβ, Eγ, Iγ, βγ-coin, γγ-coin; deduced β-branching ratios, β-intensities. 140Te; deduced T1/2. 140I; deduced levels, J, π, T1/2 of ground and two newly found β-decaying isomeric states. 140Xe; deduced levels, J, π, band structures. Systematics of excitation energies of octupole collective states and positive-parity states in N = 86 isotones. Comparison to large-scale shell model and deformed Skyrme-HFB+QRPA (SkM*) calculations. Wide-range Active Silicon Strip Stopper Array for β and ion detection (WAS3ABi) system combined with EUROBALL-RIKEN Cluster Array (EURICA) at RIBF.

doi: 10.1103/PhysRevC.105.044325
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2021HI10      Phys.Rev. C 104, 014312 (2021)

K.Higashiyama, N.Yoshinaga

Quantum-number-projected generator-coordinate-method analysis of low-lying states in nuclei around mass 80

NUCLEAR STRUCTURE 76,78Ge, 78,80Se; calculated contour plots of the energy gain in (β, γ) plane for neutron and proton interactions, quadrupole-quadrupole (QQ) interaction between neutrons and protons, and the total Hamiltonian, levels, J, π, staggering parameters for the quasi-γ bands, B(E2) for the yrast states, electric quadrupole moments. Quantum-number-projected generator coordinate method (QNPGCM) with monopole and quadrupole pairing plus quadrupole-quadrupole interaction. Comparison with experimental data, and with predictions of shell-model calculations.

doi: 10.1103/PhysRevC.104.014312
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2021YO03      Prog.Theor.Exp.Phys. 2021, 063D01 (2021)

N.Yoshinaga, K.Yanase, C.Watanabe, K.Higashiyama

Large-scale nuclear shell-model calculations of isotopes in the southwest region of 208Pb

NUCLEAR STRUCTURE 202,203,204,205,206Tl, 201,202,203,204,205,206Hg, 200,201,202,203,204,205Au, 199,200,201,202,203,204Pt; calculated energy levels, J, π, B(Eλ). Large-scale nuclear shell model, comparison with experimental data.

doi: 10.1093/ptep/ptab039
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2020HI12      J.Phys.(London) G47, 035102 (2020)

K.Higashiyama, K.Yanase, N.Yoshinaga, A.Umeya, A.Uehara, E.Teruya

Nuclear matrix elements of neutrinoless double beta decay for masses 130 and 136 in the shell model

RADIOACTIVITY 130Te, 136Xe(2β-); calculated nuclear matrix elements of neutrinoless double beta decay using the nuclear shell model.

doi: 10.1088/1361-6471/ab5400
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2018KA27      Phys.Rev. C 98, 014309 (2018)

L.Kaya, A.Vogt, P.Reiter, M.Siciliano, B.Birkenbach, A.Blazhev, L.Coraggio, E.Teruya, N.Yoshinaga, K.Higashiyama, K.Arnswald, D.Bazzacco, A.Bracco, B.Bruyneel, L.Corradi, F.C.L.Crespi, G.de Angelis, J.Eberth, E.Farnea, E.Fioretto, C.Fransen, B.Fu, A.Gadea, A.Gargano, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hetzenegger, R.Hirsch, N.Itaco, P.R.John, J.Jolie, A.Jungclaus, 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, A.Pullia, M.Queiser, F.Recchia, D.Rosiak, N.Saed-Samii, E.Sahin, F.Scarlassara, D.Schneiders, M.Seidlitz, B.Siebeck, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, T.Steinbach, O.Stezowski, S.Szilner, B.Szpak, C.Ur, J.J.Valiente-Dobon, K.Wolf, K.O.Zell

High-spin structure in the transitional nucleus 131Xe: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure

NUCLEAR REACTIONS 208Pb(136Xe, X), E=6.84 MeV/nucleon; 238U(136Xe, X), E=7.35 MeV/nucleon; measured projectile-like reaction fragments using PRISMA magnetic spectrometer, Eγ, Iγ, γγ- and (131Xe)γ-coin using AGATA demonstrator array for γ detection at LNL-Legnaro. 124Sn(11B, 3np), E=54 MeV; measured Eγ, Iγ, γγ and pγ-coin, γγ(θ) using HORUS array at Cologne for γ detection and annular double-sided silicon strip detector (DSSSD) for particles. 131Xe; deduced levels, J, π, high-spin states. Comparison with shell-model calculations using several different interactions; discussed systematics of high-spin states in Z=54 nuclei of 123,125,127,129,131Xe, and N=77 nuclei of 127Sn, 129Te131Xe, 133Ba, 135Ce, 137Nd, 139Sm, 141Gd; compiled experimental total aligned angular momentum versus rotational frequency plots for yrast bands in A=117-132 Xe isotopes.

NUCLEAR STRUCTURE 131Xe; calculated levels, J, π, contribution of proton and neutron configurations for selected states, proton and neutron occupation numbers in h11/2 orbital, total aligned angular momenta as function of rotational frequency, and B(E2) using shell-model calculations with PQM130, SN100PN, GCN50:82, realistic SM, and SN100-KTH interactions. 129Xe; calculated proton and neutron occupation numbers in h11/2 orbital, total aligned angular momenta as function rotational frequency using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.014309
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2018YA13      Phys.Rev. C 98, 014308 (2018)

K.Yanase, E.Teruya, K.Higashiyama, N.Yoshinaga

Shell-model study of Pb, Bi, Po, At, Rn, and Fr isotopes with masses from 210 to 217

NUCLEAR STRUCTURE 210,211,212Pb, 210,211,212,213Bi, 211,212,213,214Po, 212,213,214,215At, 213,214,215,216Rn, 214,215,216,217Fr; calculated level energies, B(E2), magnetic dipole and electric quadrupole moments, isomeric states, and expected number of neutron and proton pairs in 212,214Po and 214,216Rn states using large scale shell-model calculations. Comparison with available experimental data.

doi: 10.1103/PhysRevC.98.014308
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2018YO01      Prog.Theor.Exp.Phys. 2018, 023D02 (2018)

N.Yoshinaga, K.Yanase, K.Higashiyama, E.Teruya, D.Taguchi

Structure of nuclei with masses 76 and 82 and nuclear matrix elements of neutrinoless double beta decay

NUCLEAR STRUCTURE 82Se, 82Kr, 76Ge, 76Se; calculated energy levels, J, π, B(E2) values, nuclear matrix elements, T1/2. Comparison with available data.

doi: 10.1093/ptep/ptx174
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2018YO12      Phys.Rev. C 98, 044321 (2018)

N.Yoshinaga, K.Yanase, K.Higashiyama, E.Teruya

Octupole phonon model based on the shell model for octupole vibrational states

NUCLEAR STRUCTURE 200,202,204,206,208,210,212,214,216Pb, 200,202,204,206,208,210,212,214,216,218Po, 200,202,204,206,208,210,212,214,216,218,220,222Rn, 206,208,210,212,214,216,218,220,222,224,226,228,230,232Ra, 216,218,220,222,224,226,228,230,232,234,236Th; calculated E(first 4+)/E(first 2+) ratios, and energies of first 3- states. 206,210Pb, 210,212,214Po, 214,216Rn, 212At, 214Fr; calculated levels, J, π, B(E3). Shell model calculations with one-octupole-phonon representing collective octupole vibration across the magic core. Comparison with experimental values.

doi: 10.1103/PhysRevC.98.044321
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2017TE02      Phys.Rev. C 96, 015501 (2017)

E.Teruya, N.Yoshinaga, K.Higashiyama, K.Asahi

Effects of particle-hole excitations to nuclear Schiff moments in Xe isotopes

NUCLEAR MOMENTS 135,133,131,129Xe; calculated nuclear Schiff moments induced by the interaction violating parity and time reversal invariance using shell-model wave functions. Comparison with other theoretical calculations. 129Xe; calculated proton-single-particle energies, strength functions of Schiff moment operator as function of energy, energy weighted sum function for the Schiff moment; estimated upper limit for the electric dipole moment (EDM).

doi: 10.1103/PhysRevC.96.015501
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2016TE06      Phys.Rev. C 93, 064327 (2016)

E.Teruya, K.Higashiyama, N.Yoshinaga

Large-scale shell-model calculations of nuclei around mass 210

NUCLEAR STRUCTURE 203,204,205,206Pb, 204,205,206,207,208Bi, 205,206,207,208,209,210Po, 206,207,208,209,210,211At, 207,208,209,210,211,212Rn, 208,209,210,211,212,213Fr; calculated levels, J, π, B(E2), magnetic dipole moments and the electric quadrupole moments. Large-scale shell-model calculations assuming 208Pb as core, and including all the orbitals 0h9/2, 1f7/2, 0i13/2, 2p3/2, 1f5/2, and 2p1/2 between N=82 and 126 magic numbers using monopole pairing, quadrupole-quadrupole, and multipole-pairing interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.064327
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2016TE08      Phys.Rev. C 94, 014317 (2016)

E.Teruya, N.Yoshinaga, K.Higashiyama, H.Nishibata, A.Odahara, T.Shimoda

Large-scale shell model study of the newly found isomer in 136La

NUCLEAR STRUCTURE 136La; calculated levels, J, π, kinematic moment of inertia, B(E2), B(M1), B(M1)/B(E2) ratios, configurations, occupation proton and neutron numbers in s1/2, d3/2, d5/2, g7/2 and h11/2 orbitals. Large-scale shell model calculation with two-body interaction consisting of multipole-pairing interactions, and pairing plus quadrupole-quadrupole interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.014317
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2015NI05      Phys.Rev. C 91, 054305 (2015), Erratum Phys.Rev. C 95, 029902 (2017)

H.Nishibata, R.Leguillon, A.Odahara, T.Shimoda, C.M.Petrache, Y.Ito, J.Takatsu, K.Tajiri, N.Hamatani, R.Yokoyama, E.Ideguchi, H.Watanabe, Y.Wakabayashi, K.Yoshinaga, T.Suzuki, S.Nishimura, D.Beaumel, G.Lehaut, D.Guinet, P.Desesquelles, D.Curien, K.Higashiyama, N.Yoshinaga

High-spin states in 136La and possible structure change in the N=79 region

NUCLEAR REACTIONS 124Sn(17N, 5n), E=5.2 MeV/nucleon, [17N secondary beam from 9Be(18O, 17N), E=9.3 MeV/nucleon primary reaction]; measured Eγ, Iγ, γγ-coin, isomer half-life by γ(t) at RCNP-Osaka facility. 136La; deduced high-spin levels, J, π, isomer, bands, configuration, B(M1), B(E2). Comparison with pair-truncated shell model (PTSM) calculations, and cranked Nilsson-Strutinsky (CNS) model. Systematics of band structures in 130,132,134,136La and N=79 isotones 134Cs, 136La, 138Pr, 140Pm.

doi: 10.1103/PhysRevC.91.054305
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2015TE05      Phys.Rev. C 92, 034320 (2015)

E.Teruya, N.Yoshinaga, K.Higashiyama, A.Odahara

Shell-model calculations of nuclei around mass 130

NUCLEAR STRUCTURE 126,127,128,129,130Sn, 127,128,129,130,131,132Sb, 128,129,130,131,132,133,134Te, 129,130,131,132,133,134,135I, 130,131,132,133,134,135,136Xe, 131,132,133,134,135,136,137Cs, 132,133,134,135,136,137,138Ba; calculated levels, J, π, bands, isomers, B(M1), B(E2), magnetic dipole and the electric quadrupole moments. Shell model calculations with monopole and quadrupole pairing plus quadrupole-quadrupole interactions. Comparison with experimental values.

doi: 10.1103/PhysRevC.92.034320
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2014YO02      Phys.Rev. C 89, 045501 (2014)

N.Yoshinaga, K.Higashiyama, R.Arai, E.Teruya

Nuclear electric dipole moments for the lowest 1/2+ states in Xe and Ba isotopes

NUCLEAR STRUCTURE 129Xe, 131Ba; calculated levels, J, π, and comparison with experimental spectrum, density of 1/2- states, strength function for nuclear electric dipole moment (EDM) operator, off-diagonal potential matrix elements between first 1/2+ state and k-th 1/2- state for the isoscalar interaction, partial contribution to EDM for isoscalar (I=0), isovector (I=1) and isotensor (J=2) type two-body interaction. 129,131,133,135Xe, 131,133,135,137Ba; calculated isoscalar (I=0), isovector (I=1) and isotensor (J=2) nuclear electric dipole moments (EDM), neutron quenching factors and upper limit of the nuclear EDM for 1/2+ states. Nuclear shell model with two-body nucleon interactions violating parity and time-reversal invariance.

doi: 10.1103/PhysRevC.89.045501
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2013FO31      Phys.Rev. C 88, 064315 (2013)

N.Fotiades, J.A.Cizewski, K.Higashiyama, N.Yoshinaga, E.Teruya, R.Krucken, R.M.Clark, P.Fallon, I.Y.Lee, A.O.Macchiavelli, W.Younes

Medium-spin states in 135Cs

NUCLEAR REACTIONS 208Pb(18O, X)135Cs, E=91 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at LBNL cyclotron facility. 135Cs; deduced high-spin levels, J, π, B(E2), configuration. 85,86Br, 95Y; observed γ from complementary fission fragments. Systematics of level structures in 133I, 134Xe, 135Cs, 136Ba. Comparison with shell-model calculations.

NUCLEAR STRUCTURE 135Cs; calculated levels, J, π, B(E2) using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.064315
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2013HI10      Phys.Rev. C 88, 034315 (2013);Erratum Phys.Rev. C 89, 059901 (2014)

K.Higashiyama, N.Yoshinaga

Pair-truncated shell-model analysis for doubly-odd nuclei around mass 130

NUCLEAR STRUCTURE 130,132Xe, 130,132Cs, 132,134Ba, 132,134La; calculated levels, J, π, B(M1), B(E2), B(M1)/B(E2), doublet bands, staggering origin of M1 transitions. Pair-truncated shell model (PTSM) calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.034315
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2013TO05      Phys.Rev. C 87, 041304 (2013)

Y.Toh, C.J.Chiara, E.A.McCutchan, W.B.Walters, R.V.F.Janssens, M.P.Carpenter, S.Zhu, R.Broda, B.Fornal, B.P.Kay, F.G.Kondev, W.Krolas, T.Lauritsen, C.J.Lister, T.Pawlat, D.Seweryniak, I.Stefanescu, N.J.Stone, J.Wrzesinski, K.Higashiyama, N.Yoshinaga

Evidence for rigid triaxial deformation at low energy in 76Ge

NUCLEAR REACTIONS 238U(76Ge, 76Ge'), E=530 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array at ATLAS facility in ANL. 76Ge; deduced high-spin levels, bands, multipolarity, mixing ratios, J, π, B(E2), staggering. Comparison with collective- and shell-model calculations. Evidence of rigid triaxial deformation in the low-lying states of 76Ge. Systematics of staggering parameter for γ bands in 74,76,78Se, 76Ge, 76,78,80Kr nuclei.

doi: 10.1103/PhysRevC.87.041304
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2013YO01      Phys.Rev. C 87, 044332 (2013); Erratum Phys.Rev. C 89, 069902 (2014)

N.Yoshinaga, K.Higashiyama, R.Arai, E.Teruya

Nuclear Schiff moments for the lowest 1/2+ states in Xe isotopes

NUCLEAR STRUCTURE 129,131,133,135Xe; calculated levels, J, π, Schiff moments. 129Xe; calculated upper limit of the electric dipole moment (EDM) of neutral atom. Nuclear shell model with two-body interactions violating parity and time-reversal invariance. Comparison of level structures with experimental data.

doi: 10.1103/PhysRevC.87.044332
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2013YO05      J.Phys.:Conf.Ser. 445, 012032 (2013)

N.Yoshinaga, K.Higashiyama

Band structure of neutron rich Se and Ge isotopes

NUCLEAR STRUCTURE 76,78Ge, 78,80Ge; calculated levels, J, π, rotational bands, yrast states B(E2), deformation using full-fledged shell model. Compared with available data.

doi: 10.1088/1742-6596/445/1/012032
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2011HI05      Phys.Rev. C 83, 034321 (2011); Erratum Phys.Rev. C 89, 049903 (2014)

K.Higashiyama, N.Yoshinaga

Pair-truncated shell-model analysis of nuclei around mass 130

NUCLEAR STRUCTURE 128,130,131,132,133,134,135,136,137Ba, 126,128,129,130,131,132,133,134,135Xe, 130,132,133,134,135,136,137,138,139Ce, 132,134,136,138,140Nd, 129,130,131,132,133,135Cs, 131,132,133,134,135,137La; calculated levels, J, π, B(M1), B(E2), magnetic dipole moments, electric quadrupole moments. Pair-truncated shell model (PTSM). Comparison with experimental data.

doi: 10.1103/PhysRevC.83.034321
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2010YO05      J.Phys.(London) G37, 115104 (2010)

N.Yoshinaga, K.Higashiyama

Effective interactions between a neutron and a proton in high-j orbitals around mass A = 100

NUCLEAR STRUCTURE 100,102,104,106Pd, 98,100,102,104Ru, 100,102,104,106Rh, 98,100,102,104Tc; calculated energies, J, π of yrast states, B(E2), B(M1), B(M1)/B(E2). Quadrupole coupling model (QCM).

doi: 10.1088/0954-3899/37/11/115104
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2009SU08      Phys.Rev. C 79, 061603 (2009)

T.Suzuki, M.Honma, K.Higashiyama, T.Yoshida, T.Kajino, T.Otsuka, H.Umeda, K.Nomoto

Neutrino-induced reactions on 56Fe and 56Ni, and production of 55Mn in population III stars

NUCLEAR REACTIONS 56Fe(ν, e), 56Ni(ν, ν'p)(ν, ν'), E not given; calculated charged current reaction σ, GT strengths, and yield of 55Mn through successive electron captures using shell-model Hamiltonian in pf shell. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.061603
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2008HI15      Prog.Theor.Phys.(Kyoto) 120, 525 (2008)

K.Higashiyama, N.Yoshinaga

Simple Description of Doublet Bands with Mass of Approximately 100

NUCLEAR STRUCTURE Pd, Ru, Rh, Tc; calculated level energies, J, π, B(E2), B(M1) for doubly-odd nuclei using a collective model.

doi: 10.1143/PTP.120.525
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2008YO07      Phys.Rev. C 78, 044320 (2008)

N.Yoshinaga, K.Higashiyama, P.H.Regan

High-spin structure of neutron-rich Se, As, Ge, and Ga isotopes

NUCLEAR STRUCTURE 78,79,80,81,82,83,84Se; 77,79,81As, 76,77,78,79,80,81,82Ge, 75,77,79Ga; calculated levels, J, π, Eγ, B(E2), moments of inertia. Comparison with experimental data. Shell model calculations.

doi: 10.1103/PhysRevC.78.044320
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2007HI10      Eur.Phys.J. A 33, 355 (2007)

K.Higashiyama, N.Yoshinaga

Application of a quadrupole-coupling model to doublet bands in doubly-odd nuclei

NUCLEAR STRUCTURE 126,128,130,132Cs, 128,130,132,134La, 130,132,134,136Pr; calculated level energies, J, π, B(M1), B(E2) using the Quadrupole Coupling Model.

doi: 10.1140/epja/i2007-10457-7
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2007JO14      Phys.Rev. C 76, 054317 (2007); Erratum Phys.Rev. C 76, 069905 (2007)

G.A.Jones, P.H.Regan, Zs.Podolyak, N.Yoshinaga, K.Higashiyama, G.de Angelis, Y.H.Zhang, A.Gadea, C.A.Ur, M.Axiotis, D.Bazzacco, D.Bucurescu, E.Farnea, W.Gelletly, M.Ionescu-Bujor, A.Iordachescu, Th.Kroll, S.D.Langdown, S.Lenzi, S.Lunardi, N.Marginean, T.Martinez, N.H.Medina, R.Menegazzo, D.R.Napoli, B.Quintana, B.Rubio, C.Rusu, R.Schwenger, D.Tonev, J.J.Valiente Doban, W.von Oertzen

Yrast studies of 80, 82Se using deep-inelastic reactions

NUCLEAR REACTIONS 192Os(82Se, X), E=460 MeV; measured Eγ, Iγ, γγ-coin. 80,82Se; deduced levels, J, π, configurations.

doi: 10.1103/PhysRevC.76.054317
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2007SU08      Prog.Part.Nucl.Phys. 59, 486 (2007)

T.Suzuki, S.Chiba, Ta.Yoshida, K.Higashiyama, M.Honma, T.Kajino, T.Otsuka

Advances in shell-model calculations and neutrino-induced reactions

NUCLEAR REACTIONS 12C(ν, ν'), (ν, e), (ν, ν'p), (ν, ν'n), 56Fe(ν, e), 58.60,62,64Ni(ν, e), E not given; calculated supernova neutrino induced cross sections using new shell model hamiltonian.

doi: 10.1016/j.ppnp.2007.01.013
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2006YO08      Eur.Phys.J. A 30, 343 (2006); Erratum Eur.Phys.J. A 31, 395 (2007)

N.Yoshinaga, K.Higashiyama

A simple model for doublet bands in doubly odd nuclei

NUCLEAR STRUCTURE 128,130,132Cs, 130,132,134La, 134,136Pr; calculated rotational bands levels, J, π, B(M1)/B(E2). Quadrupole coupling model.

doi: 10.1140/epja/i2006-10141-6
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2005HI09      Prog.Theor.Phys.(Kyoto) 113, 1139 (2005)

K.Higashiyama, N.Yoshinaga

New Neutron-Proton Single-Particle Mode and Collective Excitation in 134La

NUCLEAR STRUCTURE 134La; calculated levels, J, π, B(M1)/B(E2). Pair-truncated shell model, comparison with data.

doi: 10.1143/PTP.113.1139
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2005HI17      Phys.Rev. C 72, 024315 (2005)

K.Higashiyama, N.Yoshinaga, K.Tanabe

New band mechanism of doubly-odd nuclei around mass 130

NUCLEAR STRUCTURE 130,132Xe, 132,134Ba, 130,132Cs, 132,134La; calculated levels, J, π, B(M1), B(E2), g factors, rotational bands. Pair-truncated shell model, comparison with data.

doi: 10.1103/PhysRevC.72.024315
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2005HI20      J.Phys.(London) G31, S1877 (2005)

K.Higashiyama, N.Yoshinaga

Microscopic investigation of magnetic dipole bands in 132Ba

NUCLEAR STRUCTURE 132Ba; calculated levels, J, π, configurations, B(M1), magnetic dipole band features. Pair-truncated shell model, comparison with data.

doi: 10.1088/0954-3899/31/10/092
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2005TA04      Phys.Rev. C 71, 014305 (2005)

T.Takahashi, N.Yoshinaga, K.Higashiyama

Backbending phenomena in 132, 134, 136Ce with a pair-truncated shell model

NUCLEAR STRUCTURE 132,134,136Ce; calculated rotational bands levels, J, π, B(E2), branching ratios, g factors, backbending phenomena. Pair-truncated shell model, comparisons with data.

doi: 10.1103/PhysRevC.71.014305
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2005YO10      J.Phys.(London) G31, S1455 (2005)

N.Yoshinaga, K.Higashiyama

Microscopic description of systematic doublet bands in the A ∼ 130 region

NUCLEAR STRUCTURE 134La; calculated levels, J, π, B(M1), B(E2). Pair-truncated shell model, comparison with data.

doi: 10.1088/0954-3899/31/10/013
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2004VA03      Phys.Rev. C 69, 024316 (2004)

J.J.Valiente-Dobon, P.H.Regan, C.Wheldon, C.Y.Wu, N.Yoshinaga, K.Higashiyama, J.F.Smith, D.Cline, R.S.Chakrawarthy, R.Chapman, M.Cromaz, P.Fallon, S.J.Freeman, A.Gorgen, W.Gelletly, A.Hayes, H.Hua, S.D.Langdown, I.Y.Lee, X.Liang, A.O.Macchiavelli, C.J.Pearson, Zs.Podolyak, G.Sletten, R.Teng, D.Ward, D.D.Warner, A.D.Yamamoto

136Ba studied via deep-inelastic collisions: Identification of the (νh11/2)-210+ isomer

NUCLEAR REACTIONS 198Pt(136Xe, X), E=850 MeV; measured prompt and delayed Eγ, Iγ, γγ-, (particle)γ-coin. 136Ba deduced levels, J, π, B(E2), isomer T1/2. 128,130Te, 131,133I, 132,136Xe, 138Ba, 137La, 184W, 185Re, 191,192,195Os, 192,198Pt, 193Au; deduced isomers T1/2. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.69.024316
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2004YO04      Phys.Rev. C 69, 054309 (2004)

N.Yoshinaga, K.Higashiyama

Systematic studies of nuclei around mass 130 in the pair-truncated shell model

NUCLEAR STRUCTURE 126,128,130,132,134Xe, 128,130,132,134,136Ba, 130,132,134,136,138Ce, 132,134,136,138,140Nd; calculated levels, J, π, B(E2). 129,131,133Xe, 131,133,135Ba, 133,135,137Ce; calculated levels, J, π, μ. Pair-truncated shell model, comparisons with data.

doi: 10.1103/PhysRevC.69.054309
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2003HI04      Phys.Rev. C 67, 044305 (2003)

K.Higashiyama, N.Yoshinaga, K.Tanabe

Pair-truncated shell-model approach to backbending and low-lying states in 132Ba

NUCLEAR STRUCTURE 132Ba; calculated rotational bands structure, J, π, transitions B(E2), backbending features. Pair-truncated shell model, comparison with data.

doi: 10.1103/PhysRevC.67.044305
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2002EN09      Phys.Rev. C66, 047301 (2002)

K.Enami, K.Higashiyama, K.Tanabe, N.Yoshinaga

Quantum-number-projected generator coordinate method analysis of low-lying states in 130, 132Xe

NUCLEAR STRUCTURE 130,132Xe; calculated low- and high-spin states energies, J, π, rotational bands; deduced role of triaxial deformation. Quantum-number-projected generator coordinate method, comparison with data and shell-model results.

doi: 10.1103/PhysRevC.66.047301
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2002HI08      Phys.Rev. C65, 054317 (2002)

K.Higashiyama, N.Yoshinaga, K.Tanabe

Shell Model Study of Backbending Phenomena in Xe Isotopes

NUCLEAR STRUCTURE 130,131,132,133,134,135,136Xe; calculated levels, J, π, rotational bands features. Shell model, comparison with data.

doi: 10.1103/PhysRevC.65.054317
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2002HI22      Prog.Theor.Phys.(Kyoto), Suppl. 146, 563 (2002)

K.Higashiyama, N.Yoshinaga, K.Tanabe

Shell Model Study of Even-Even Xe Isotopes

NUCLEAR STRUCTURE 132Xe; calculated levels, J, π, B(E2). Shell model, comparison with data.

doi: 10.1143/PTPS.146.563
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2002YO07      Prog.Theor.Phys.(Kyoto), Suppl. 146, 640 (2002)

N.Yoshinaga, K.Higashiyama

Nucleon Pair Approximation of the Backbending Phenomena

NUCLEAR STRUCTURE 132Ba; calculated levels, J, π, pair-number expectation values. Comparison with data.

doi: 10.1143/PTPS.146.640
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2000EN13      Prog.Theor.Phys.(Kyoto) 104, 757 (2000)

K.-I.Enami, K.Tanabe, N.Yoshinaga, K.Higashiyama

Triaxiality-Driving Effect Extracted by Spin Projection

NUCLEAR STRUCTURE 142Nd, 168Er, 188Os; calculated potential energy surfaces, effect of triaxial spin projection as a function of deformation. Deformed mean-field approach.

doi: 10.1143/PTP.104.757
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