Particle alignments and shape change in {sup 66}Ge and {sup 68}Ge

Journal Article · Fri Apr 01 04:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.044301· OSTI ID:20696047

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

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1. Laboratory of Physics, Fukuoka Dental College, Fukuoka 814-0193 (Japan)
2. Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503 (Japan)
3. Institute of Natural Sciences, Senshu University, Kawasaki, Kanagawa 214-8580 (Japan)

The structure of the N{approx_equal}Z nuclei {sup 66}Ge and {sup 68}Ge is studied by the shell model with an extended P+QQ Hamiltonian in the configuration space (2p{sub 3/2},1f{sub 5/2},2p{sub 1/2},1g{sub 9/2}). This framework can be shown to give a consistent and good description of energy levels, moments of inertia, and Q moments in Ge isotopes. We also investigate particle alignments and nuclear shapes in {sup 66}Ge and {sup 68}Ge. It is shown that structural changes in the four sequences of the positive- and negative-parity yrast states with even J and odd J are caused by various types of particle alignments in the g{sub 9/2} orbit. The nuclear shape is also investigated by calculating spectroscopic Q moments of the first and second 2{sup +} states, and the triaxiality is examined by potential energy surface.

• OSTI ID: 20696047
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
GERMANIUM 66
GERMANIUM 68
HAMILTONIANS
MOMENT OF INERTIA
NUCLEAR STRUCTURE
PARITY
POTENTIAL ENERGY
SHELL MODELS
YRAST STATES