https://doi.org/10.1140/epja/i2003-10171-6
The N = Z nucleus 76 Sr: Gamow-Teller strength and nuclear deformation
1
Institut de Recherches Subatomiques, UMR 7500 CNRS-IN2P3 et Université Louis Pasteur, 23 rue du Loess, B.P. 28,, F-67037, Strasbourg Cedex 2,, France
2
Instituto de Estructura de la Materia,, CSIC, Serrano 113bis, E-28006, Madrid,, Spain
3
Division EP, CERN,, ISOLDE, CH-1211, Geneva, Switzerland
4
Institut de Physique Nucléaire,, Université Claude Bernard-Lyon I, F-69622, Villeurbanne Cedex, France
* e-mail: philippe.dessagne@ires.in2p3.fr
Challenged by recent theoretical work, a study of the 
-EC decay of the N = Z even-even nucleus 76
Sr has been undertaken in order to assign the parent ground-state deformation. In this study 13 levels with 
have been located in 76
Rb. The beta-delayed proton emission has been observed for the first time in an N = Z even-even nucleus. The 
p branching ratio has been determined to be 
. The 76
Sr half-life has been remeasured and a more precise value of 
s has been obtained. On the basis of the comparison of measured Gamow-Teller strength with calculated strength distributions for both oblate and prolate deformation, it is concluded that the 76
Sr has strong prolate deformation in the ground state.
© Società Italiana di Fisica and Springer-Verlag, 2004
