Microscopic description of oblate-prolate shape mixing in proton-rich Se isotopes

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.014305· OSTI ID:21289974

Hinohara, Nobuo ^[1]; Nakatsukasa, Takashi ^[2]; Matsuo, Masayuki ^[3]; Matsuyanagi, Kenichi ^[1]

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1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
2. Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center, Wako 351-0198 (Japan)
3. Department of Physics, Faculty of Science, Niigata University, Niigata 950-2181 (Japan)

The oblate-prolate shape coexisting/mixing phenomena in proton-rich {sup 68,70,72}Se are investigated by means of the adiabatic self-consistent collective coordinate (ASCC) method. The one-dimensional collective path and the collective Hamiltonian describing the large-amplitude shape vibration are derived in a fully microscopic way. The excitation spectra, B(E2) and spectroscopic quadrupole moments are calculated by requantizing the collective Hamiltonian and solving the collective Schroedinger equation. The basic properties of the coexisting two rotational bands in low-lying states of these nuclei are well reproduced. It is found that the oblate-prolate shape mixing becomes weak as the rotational angular momentum increases. We point out that the rotational energy plays a crucial role in causing the localization of the collective wave function in the ({beta},{gamma}) deformation space.

• OSTI ID: 21289974
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
ANGULAR MOMENTUM
DEFORMED NUCLEI
EXCITATION
HAMILTONIANS
MIXING
ONE-DIMENSIONAL CALCULATIONS
PROTONS
QUADRUPOLE MOMENTS
ROTATIONAL STATES
SCHROEDINGER EQUATION
SELENIUM 68
SELENIUM 70
SELENIUM 72
SPECTRA
WAVE FUNCTIONS