Microscopic structure of deformed and superdeformed collective bands in rotating nuclei

Journal Article · Thu Mar 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.034306· OSTI ID:20995119

Kvasil, J; Knapp, F ^[1]; Lo Iudice, N; Andreozzi, F; Porrino, A ^[2]

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1. Institute of Particle and Nuclear Physics, Charles University, V. Holesovickach 2, CZ-18000 Prague 8 (Czech Republic)
2. Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II' and Istituto Nazionale di Fisica Nucleare, Monte S. Angelo, Via Cintia I-80126 Naples (Italy)

We investigate in self-consistent cranked Nilsson plus quasiparticle random-phase approximation the structure of {sup 190,192,194}Hg in their evolution from normal to superdeformation and from low to high rotational frequencies. The analysis of the energy levels suggests a splitting of few normally deformed bands into two or more branches. The investigation of the dynamical moments of inertia supports the octupole character of the low-lying negative parity superdeformed bands, in agreement with previous theoretical predictions and experimental findings. As a more direct confirm of their octupole nature, we obtain strong E1 transitions linking those bands to the yrast superdeformed band, in agreement with experiments. A similar result is shown to hold also for {sup 152}Dy. Like in {sup 152}Dy, the collectivity of the low-lying scissors mode gets enhanced with the onset of superdeformation.

• OSTI ID: 20995119
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CRANKING MODEL
DYSPROSIUM 152
E1-TRANSITIONS
MASS NUMBER
MERCURY 194
MOMENT OF INERTIA
OCTUPOLES
PARITY
RANDOM PHASE APPROXIMATION
ROTATIONAL STATES
SHELL MODELS
SUPERDEFORMED NUCLEI
YRAST STATES