Non-yrast low-spin states in the triaxially deformed nucleus Xe-123

Citation
A. Gade et al., Non-yrast low-spin states in the triaxially deformed nucleus Xe-123, NUCL PHYS A, 686, 2001, pp. 3-28
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
686
Year of publication
2001
Pages
3 - 28
Database
ISI
SICI code
0375-9474(20010409)686:<3:NLSITT>2.0.ZU;2-8
Abstract
The non-yrast states of Xe-123 have been investigated with the reaction Te- 123(He-3,3n) by means of in-beam gamma -spectroscopy using a setup of 6 Com pton-suppressed high-purity-germanium (HPGe) detectors. More than 130 new t ransitions establishing over 35 new levels were observed. gamma gamma angul ar correlations were analyzed to assign spins and parities to the low-lying states, and to determine the multipole mixing ratios of the gamma -transit ions. With this method 9 spin and parity assignments were made and 19 multi pole mixing ratios could be determined. Excitation energies of negative-par ity states and the branching ratios of their decays are compared with predi ctions of the Rigid Triaxial Rotor plus Particle model (RTRP). (C) 2001 Els evier Science B.V. All rights reserved.