CERN Accelerating science

Article
Title Asymmetry in the super-allowed β-transitions of the A=9 isobars
Author(s) García-Borge, M J ; Prezado, Y ; Bergmann, U C ; Boutami, R ; Cederkäll, J ; Diget, C A ; Fraile-Prieto, L M ; Fynbo, H O U ; Jading, Y ; Jeppesen, H B Mostra tots els 21 autors
Affiliation (Inst de Estructura de la Mater, CSIC, Madrid, Spain)
Publication 2004
In: Nucl. Phys. A 738 (2004) 206-210
In: 8th International Conference on Clustering Aspects of Nuclear Structure and Dynamics, Nara, Japan, 24 - 29 Nov 2003, pp.206-10
DOI 10.1016/j.nuclphysa.2004.04.074
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN ISOLDE ; IS361
Abstract We report here on the recent β-decay studies of the A = 9 isobar made at ISOLDE/CERN. Mirror β - transitions in the A=9 chain are compared and a large asymmetry factor is deduced for the transitions to high excitation energy in 9Be (11.8 MeV) and 9B (12.2 MeV) fed in the β-decay of 9Li and 9C respectively. It is shown that the asymmetry is not due to experimental problems or differences in the mechanisms of breakup or in the spin of the states. Only differences in the partial decay branches of the breakup channels have been found. As no asymmetry is found in the gs to gs transition it must be due to the particular structure of these excited states. (14 refs).

Corresponding record in: Inspire


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