Microscopic structure of high-spin vibrational states in superdeformed A=190 nuclei

Conference · Mon Dec 30 23:00:00 EST 1996

OSTI ID:458901

Nakatsukasa, Takashi ^[1]; Matsuyanagi, Kenichi ^[2]; Mizutori, Shoujirou ^[3]

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1. Chalk River Labs., Ontario (Canada)
2. Kyoto Univ. (Japan)
3. Oak Ridge National Lab., TN (United States); and others

Microscopic RPA calculations based on the cranked shell model are performed to investigate the quadrupole and octupole correlations for excited superdeformed (SD) bands in even-even A=190 nuclei. The K = 2 octupole vibrations are predicted to be the lowest excitation modes at zero rotational frequency. The Coriolis coupling at finite frequency produces different effects depending on the neutron and proton number of nucleus. The calculations also indicate that some collective excitations may produce moments of inertia almost identical to those of the yrast SD band. An interpretation of the observed excited bands invoking the octupole vibrations is proposed, which suggests those octupole vibrations may be prevalent in even-even SD A=190 nuclei.

• Research Organization: Argonne National Lab., IL (United States)
• OSTI ID: 458901
• Report Number(s): ANL/PHY--97/1; CONF-9607156--; ON: DE97003376
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRANKING MODEL
HEAVY NUCLEI
HIGH SPIN STATES
OSCILLATION MODES
RANDOM PHASE APPROXIMATION
SHELL MODELS
SUPERDEFORMED NUCLEI
VIBRATIONAL STATES