https://doi.org/10.1140/epja/i2012-12155-9
Regular Article - Experimental Physics
Precision half-life determination of a mirror β transition: The decay of 31S
1
Centre d’Etudes Nucléaires de Bordeaux Gradignan, Université Bordeaux 1, UMR5797 CNRS/IN2P3, Chemin du Solarium, BP 120, F-33175, Gradignan Cedex, France
2
Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland
3
Instituto Estructura de la Materia, CSIC, Serrano 113bis, E-28006, Madrid, Spain
* e-mail: blank@cenbg.in2p3.fr
Received:
25
June
2012
Revised:
21
September
2012
Accepted:
6
October
2012
Published online:
19
November
2012
The half-life of the mirror 
decay of 31S has been measured at the IGISOL facility at the University of Jyväskylä. The value obtained is 
ms, in agreement with previous measurements, but with a precision that is better by a factor of ten than the literature value previously adopted. When the new result is combined with the QEC value measured recently at JYFLTRAP, a precision of better than 
is obtained for the ft value.
© SIF, Springer-Verlag Berlin Heidelberg, 2012
