Oblate-Prolate Coexistence in 68Se

Journal Article · Wed Apr 26 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2200987· OSTI ID:20798599

Kaneko, K ^[1]; Hasegawa, M ^[2]; Mizusaki, T ^[3]

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1. Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503 (Japan)
2. Laboratory of Physics, Fukuoka Dental College, Fukuoka 814-0193 (Japan)
3. Institue of Natural Sciences, Senshu University, Tokyo 101-8425 (Japan)

Nuclear shape transition and oblate-prolate coexistence are investigated in N=Z nuclei of fpg configuration space (2p3/2, 1f5/2, 2p1/2, and 1g9/2). We perform shell model calculations and constrained Hartree-Fock calculations for N=Z nuclei, 60Zn, 64Ge, and 68Se, employing an effective pairing plus quadrupole residual interaction with monopole interactions. We found shape transition from prolate to oblate deformation and oblate-prolate coexistence. The ground state of 68Se has oblate shape, while the deformation for 60Zn and 64Ge is prolate. It is shown that the isovector monopole matrix element between f5/2 and p1/2 orbitals gives rise to the oblate deformation in 68Se, and four-particle four-hole (4p-4h) excitations are important for the oblate configuration.

• OSTI ID: 20798599
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 831; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
EXCITATION
GERMANIUM 64
GROUND STATES
HARTREE-FOCK METHOD
ISOVECTORS
MATRIX ELEMENTS
NUCLEAR DEFORMATION
PARTICLE-HOLE MODEL
QUADRUPOLES
RESIDUAL INTERACTIONS
SELENIUM 68
SHELL MODELS
ZINC 60