Rotational inertia of superdeformed nuclei: Intruder orbitals, pairing, and identical bands

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.53.R1070· OSTI ID:279154

de France, G; Baktash, C; Haas, B; Nazarewicz, W ^[1]

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1. Centre de Recherches Nucleaires, IN2P3-CNRS/Universite Louis Pasteur, F-67037 Strasbourg Cedex (France)

The phenomenon of identical bands is studied by analyzing the distributions of fractional changes in the dynamical moments of inertia of pairs of bands in superdeformed (SD) nuclei. These distributions are found to exhibit a peak with a centroid at nearly zero. Their widths increase in going from the SD bands in the mass {ital A}{approximately}150, to the SD bands in the mass {approximately}190, and to the normally deformed bands in the rare-earth region. Consequently, there exists a significant excess of identical bands in SD nuclei compared to the normally-deformed nuclei at low spins. This difference may be attributed to the weaker pairing correlations and the stabilizing role of intruder orbitals on the structures of SD bands. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-84OR21400; FG05-93ER40770
• OSTI ID: 279154
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CORRELATIONS
DISTRIBUTION
MOMENT OF INERTIA
PAIRING INTERACTIONS
RARE EARTH ISOTOPES
SPIN
STABILIZATION
SUPERDEFORMED NUCLEI
WIDTH