Oblate-Prolate Coexistence in 68Se
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503 (Japan)
- Laboratory of Physics, Fukuoka Dental College, Fukuoka 814-0193 (Japan)
- 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, Vol. 831, Issue 1; Conference: International conference on frontiers in nuclear structure, astrophysics, and reactions - FINUSTAR, Isle of Kos (Greece), 12-17 Sep 2005; Other Information: DOI: 10.1063/1.2200987; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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