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

✍ Scribed by A. Gade; H. Meise; I. Wiedenhöver; A. Schmidt; A. Gelberg; P. von Brentano

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
371 KB
Volume
686
Category
Article
ISSN
0375-9474

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✦ Synopsis

The non-yrast states of 123 Xe have been investigated with the reaction 123 Te( 3 He, 3n) by means of in-beam γ -spectroscopy using a setup of 6 Compton-suppressed high-purity-germanium (HPGe) detectors. More than 130 new transitions establishing over 35 new levels were observed. γ γ angular correlations were analyzed to assign spins and parities to the low-lying states, and to determine the multipole mixing ratios of the γ -transitions. With this method 9 spin and parity assignments were made and 19 multipole mixing ratios could be determined. Excitation energies of negative-parity states and the branching ratios of their decays are compared with predictions of the Rigid Triaxial Rotor plus Particle model (RTRP).

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