Experimental determination of the excitation energy of superdeformed bands in {sup 192,194}Hg by analysis of the decay quasicontinuum {gamma} rays

Journal Article · Sun Oct 01 04:00:00 EDT 2000 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.62.044316· OSTI ID:40206065

Lauritsen, T; Khoo, T L; Ahmad, I; Carpenter, M P; Janssens, R V. F.; Korichi, A; Lopez-Martens, A; Amro, H; Berger, S; Calderin, L ^[1]

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1. and others

Superdeformed bands in the mass A=190 region decay suddenly, over a few states, at relatively low spin and high excitation energy. The decay path is very fragmented and only in a few cases have one-step or two-step decays been seen. Thus, only three superdeformed bands have so far been linked to the normal states they decay to. Most of the {gamma} rays from the decay form an unresolved quasicontinuum spectrum. This paper describes the extraction of the total quasicontinuum decay spectrum that connects the superdeformed and normal yrast states. It also demonstrates that the excitation energy and spins of superdeformed bands can be determined by analyzing this total decay spectrum. The analysis method is first tested in {sup 194}Hg, which is one of the few cases where the excitation energy and spin of the yrast superdeformed band are known, and is then applied to the yrast superdeformed band in {sup 192}Hg, where no one-step decays have been seen thus far. fe ndash

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• Sponsoring Organization: (US)
• OSTI ID: 40206065
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 62; ISSN 0556-2813
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DECAY
EXCITATION
SPIN
YRAST STATES