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Title: Microscopic structure of deformed and superdeformed collective bands in rotating nuclei

Abstract

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.

Authors:
;  [1]; ; ;  [2]
  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)
Publication Date:
OSTI Identifier:
20995119
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.75.034306; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Kvasil, J., Knapp, F., Lo Iudice, N., Andreozzi, F., and Porrino, A.. Microscopic structure of deformed and superdeformed collective bands in rotating nuclei. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.034306.
Kvasil, J., Knapp, F., Lo Iudice, N., Andreozzi, F., & Porrino, A.. Microscopic structure of deformed and superdeformed collective bands in rotating nuclei. United States. doi:10.1103/PHYSREVC.75.034306.
Kvasil, J., Knapp, F., Lo Iudice, N., Andreozzi, F., and Porrino, A.. Thu . "Microscopic structure of deformed and superdeformed collective bands in rotating nuclei". United States. doi:10.1103/PHYSREVC.75.034306.
@article{osti_20995119,
title = {Microscopic structure of deformed and superdeformed collective bands in rotating nuclei},
author = {Kvasil, J. and Knapp, F. and Lo Iudice, N. and Andreozzi, F. and Porrino, A.},
abstractNote = {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.},
doi = {10.1103/PHYSREVC.75.034306},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}