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NSR database version of April 11, 2024.

Search: Author = M.Hasegawa

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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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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, ^{36,37,38,40,42,43,44,46}S, ^{38,39,40,42,43,44,45,46,47,48}Ar, ^41,49Ca, ⁴⁷K; calculated levels, J, π. ⁴⁰Mg, ^{34,36,38,40,42,44,46,48,50,52}Si, ^{36,38,40,42,44,46,48,50,52,54}S, ^{38,40,42,44,46,48,50,52,54,56}Ar, ^{40,42,44,46,48,50,52,54,56,58}Ca; 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, ^{36,38,40,42,44}S, ^{38,40,42,44,46}Ar; calculated B(E2) values for first 2+ states. ⁴⁰Mg, ⁴²Si, ⁴⁴S, ^44,46Ar, ⁴⁸Ca; calculated spectroscopic quadrupole moments of first 2+ states. ^{35,37,39,41,43}P, ^{37,39,41,43,45}Cl, ^{39,41,43,45,47,49}K; 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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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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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 g_9/2 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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Data from this article have been entered in the XUNDL database. For more information, click here.

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 ^{54,56,58,60,62,64,66,68}Cr; 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 ^{58,60,62,64,66,68}Fe; 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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2009ZH11      Phys.Rev. C 79, 044316 (2009)

Y.H.Zhang, M.Hasegawa, W.T.Guo, M.L.Liu, X.H.Zhou, G.de Angelis, T.M.Axiotis, A.Gadea, N.Marginean, Martinez, D.R.Napoli, C.Rusu, Zs.Podolyak, C.Ur, D.Bazzacco, F.Brandolini, S.Lunardi, S.M.Lenzi, R.Menegazzo, R.Schwengner, A.Gargano, W.von Oertzen, S.Tazaki

High-spin level structure in ^{94, 95}Mo

NUCLEAR REACTIONS ¹⁶O(⁸²Se, 4n), (⁸²Se, 3n), E=460 MeV; measured Eγ, Iγ, γγ-coin, angular distributions. ^94,95Mo; deduced levels, J, π, configurations. Comparisons with shell-model calculations. ⁹⁰Sr, ⁹²Mo; level systematics.

doi: 10.1103/PhysRevC.79.044316
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Data from this article have been entered in the XUNDL database. For more information, click here.

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-g_9/2-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). ^{90,91,92,93,94}Ru, ^91,92,93Tc, ^{90,92,93,94,95}Rh, ^{92,93,94,95,96}Pd, 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 ^{52,53,54,55,56,57,58,59,60,62}Cr; 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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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 ^{93,94,95,96,97,98}Mo; 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
Citations: PlumX Metrics

2005HA28      Nucl.Phys. B(Proc.Supp.) S149, 230 (2005)

M.Hasegawa

Measurements of neutrino charged current scattering in K2K Fine-Grained Detector

doi: 10.1016/j.nuclphysbs.2005.05.098
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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
Citations: PlumX Metrics

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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2005HA68      Phys.Rev.Lett. 95, 252301 (2005)

M.Hasegawa, and the K2K Collaboration

Search for Coherent Charged Pion Production in Neutrino-Carbon Interactions

NUCLEAR REACTIONS C(ν, X), E ≈ 1.3 GeV; analyzed data; deduced upper limit for coherent charged pion production.

doi: 10.1103/PhysRevLett.95.252301
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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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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 ^{88,89,90,91,92,93,94}Ru; 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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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 f_7/2 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
Citations: PlumX Metrics

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, ^{44,45,46,47,48}Ti, ⁴⁶V, ⁴⁸Cr, ⁵⁰Mn, ⁵²Fe, ⁵⁴Co; calculated β-decay integrated Gamow-Teller strengths. ^{68,70,72,74,76,78,80}Ge, ^{70,72,74,76,78,80,82}Se; 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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1998AN30      Phys.Rev. C58, 3286 (1998)

Y.Ando, S.Tazaki, M.Hasegawa

Odd-Even Differences in Moments of Inertia

doi: 10.1103/PhysRevC.58.3286
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1998HA23      Nucl.Phys. A633, 266 (1998)

M.Hasegawa, S.Tazaki

Alpha-Like Four-Nucleon Correlations in the Ground State of ⁴⁸Cr

NUCLEAR STRUCTURE ⁴⁸Cr; calculated ground-state energy. Multiple α-like cluster model, comparison with shell model. Systematics of ground-state properties in neighboring nuclei discussed.

doi: 10.1016/S0375-9474(98)00154-7
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1998HA69      Prog.Theor.Phys.(Kyoto), Suppl. 132, 177 (1998)

M.Hasegawa

Alpha-Like Four-Nucleon Correlations Viewed in Single-Particle Mean Field

doi: 10.1143/PTPS.132.177
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1997HA35      Prog.Theor.Phys.(Kyoto) 97, 417 (1997); Erratum Prog.Theor.Phys.(Kyoto) 98, 1011 (1997)

M.Hasegawa, S.Tazaki, R.Okamoto

Instability of the HF Ground State in ⁵⁶Ni Caused by α-Like Four-Nucleon Correlations

NUCLEAR STRUCTURE ⁵⁶Ni; calculated ground-state stability conditions with respect to 4p-4h excitations; deduced instability. Hartree-Fock calculations.

doi: 10.1143/PTP.97.417
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1995HA21      Nucl.Phys. A592, 45 (1995)

M.Hasegawa, S.Tazaki, R.Okamoto

Condensed Structure of J = T = 0 α-Like Clusters in f_7/2-Shell Even-Even Nuclei with N = Z

NUCLEAR STRUCTURE ⁴⁴Ti, ⁴⁸Ca, ⁵²Fe, ⁵⁶Ni; calculated single particle levels approximate occupation probabilities; deduced α-like correlations related features. Microscopic approach.

doi: 10.1016/0375-9474(95)00296-D
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1993HA02      Phys.Rev. C47, 188 (1993)

M.Hasegawa, S.Tazaki

Calculation of the Moment of Inertia by a Proper Treatment of Pairing Correlations

NUCLEAR STRUCTURE ¹⁶⁰Dy; calculated nucleon gap parameter, levels, moment of inertia. Cranking model.

doi: 10.1103/PhysRevC.47.188
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1992HA11      Nucl.Phys. A539, 381 (1992)

M.Hasegawa, S.Tazaki

Algebraic Expression of the IBM3 Hamiltonian in Terms of Various Quantum Numbers (II). Numerical Test

NUCLEAR STRUCTURE ^44,46Ti, ⁴⁸Cr; calculated levels. Interacting boson model.

doi: 10.1016/0375-9474(92)90282-O
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1991HA05      Prog.Theor.Phys.(Kyoto) 85, 69 (1991)

M.Hasegawa

Numerical Test of a Mapping Theory for the IBM3

NUCLEAR STRUCTURE ⁴⁶Ti; calculated T=1 levels. Other (f_7/2)-configurations. Interacting boson model, mapping theory.

doi: 10.1143/ptp/85.1.69
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1985HA17      Nucl.Phys. A440, 1 (1985)

M.Hasegawa

Application of a Microscopic Interacting Boson Model to Single-Closed-Shell Nuclei

NUCLEAR STRUCTURE ⁹⁰Zr, ⁹²Mo, ⁹⁴Ru; calculated levels, B(E2). ^{116,118,120,122,124,115,117,119,121,123,125,127}Sn; calculated levels; deduced even-odd mass differences.

doi: 10.1016/0375-9474(85)90040-5
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1980HA39      Prog.Theor.Phys.(Kyoto) 63, 1984 (1980)

M.Hasegawa, N.Kanesaki

Modification of Quasi-Particle Theory in Spherical Nuclei. II. Numerical Calculations in Nuclei with Z or N = 40

NUCLEAR STRUCTURE ^{68,69,70,71,72,73,74,75}Ge, ⁸⁷Rb, ⁸⁹Y, ⁹¹Nb, ⁹³Tc, ⁸⁶Kr, ⁸⁶Sr, ⁹⁰Zr, ⁹²Mo, ⁹⁴Ru; calculated levels. Modified quasiparticle, pairing Hamiltonian.

doi: 10.1143/PTP.63.1984
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1978HA47      Prog.Theor.Phys. 60, 309 (1978)

M.Hasegawa

Coupling of 4p and 4h Modes in ⁴⁰Ca

NUCLEAR STRUCTURE ⁴⁰Ca; calculated level spacing of 4p-4h states. RPA description of 4p-modes in ⁴⁴Ti, 4h-modes in ³⁶Ar. Yukawa interaction.

doi: 10.1143/PTP.60.309
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1976HA55      Progr.Theor.Phys. 56, 830 (1976)

M.Hasegawa

Mode-Mode Coupling Model for the Four-Body Correlations in Light Nuclei

NUCLEAR STRUCTURE ⁴⁴Ti, ⁴⁴Ca, ³⁶Ar, ³⁶S; calculated levels, B(λ). Mode-mode coupling model.

doi: 10.1143/PTP.56.830
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1975HA51      Progr.Theor.Phys. 53, 1675 (1975)

M.Hasegawa

Two-Particle-Two-Hole Jπ = 0⁺ States of ⁴⁰Ca

NUCLEAR STRUCTURE ⁴⁰Ca; calculated 2p-2h levels. Tamm-Dancoff method.

doi: 10.1143/PTP.53.1675
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1971KU28      Progr.Theor.Phys. 46, 1420 (1971)

A.Kuriyama, M.Hasegawa, S.Tazaki, R.Okamoto

A Note on Pairing Vibrational Motion

doi: 10.1143/PTP.46.1420
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