Excited states and deformation of Xe-112

Citation
Jf. Smith et al., Excited states and deformation of Xe-112, PHYS LETT B, 523(1-2), 2001, pp. 13-21
Citations number
40
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
523
Issue
1-2
Year of publication
2001
Pages
13 - 21
Database
ISI
SICI code
0370-2693(200112)523:1-2<13:ESADOX>2.0.ZU;2-E
Abstract
Excited states have been identified in the very neutron-deficient Xe-112 nu cleus. The ground-state band has been observed up to spin 12 h, and a negat ive-parity side band has been observed up to 13 h. The bands have been assi gned to Xe-112 by detecting gamma rays in coincidence with evaporated charg ed particles and neutrons. The energy of the 2(1)(+) state in Xe-112 is low er than would be expected from both calculations and from systematics of th e neighboring xenon isotopes, which indicates a larger than expected ground -state deformation. The observations of a low-lying 3(-) state and large de duced B(EI) values are suggestive of increased octupole correlations, which may explain the apparently large ground-state deformation. Constrained Har tree-Fock+BCS calculations have been performed which show qualitative agree ment with the trend in deformation of the very neutron-deficient xenon isot opes. (C) 2001 Published by Elsevier Science B.V.