Beta-decay branching ratios of 62Ga

A. Bey (1) , Bertram Blank (1) , G. Canchel (1) , C. Dossat (1) , J. Giovinazzo (1) , I. Matea (1) , V. Elomaa (2) , T. Eronen (2) , U. Hager (2) , M. Hakala (2) , A. Jokinen (2) , A. Kankainen (2) , I. Moore (2) , H. Penttila (2) , S. Rinta-Antila (2) , A. Saastamoinen (2) , T. Sonoda (2, 3) , J. Aysto (2, 4) , N. Adimi (1) , G. de France (5) , J.C. Thomas (5) , G. Voltolini (5) , T. Chaventré (6)

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
2 JYU - University of Jyväskylä
3 Central Research Institute of Electric Power Industry
4 JYU - Department of Physics [Jyväskylä Univ]
5 GANIL - Grand Accélérateur National d'Ions Lourds
6 LPCC - Laboratoire de physique corpusculaire de Caen

Beta-decay branching ratios of 62Ga have been measured at the IGISOL facility of the Accelerator Laboratory of the University of Jyvaskyla. 62Ga is one of the heavier Tz = 0, 0+ -> 0+ beta-emitting nuclides used to determine the vector coupling constant of the weak interaction and the Vud quark-mixing matrix element. For part of the experimental studies presented here, the JYFLTRAP facility has been employed to prepare isotopically pure beams of 62Ga. The branching ratio obtained, BR= 99.893(24)%, for the super-allowed branch is in agreement with previous measurements and allows to determine the ft value and the universal Ft value for the super-allowed beta decay of 62Ga.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

A. Bey, Bertram Blank, G. Canchel, C. Dossat, J. Giovinazzo, et al.. Beta-decay branching ratios of 62Ga. EPJA, 2008, 36, pp.121. ⟨10.1140/epja/i2008-10578-5⟩. ⟨hal-00273805⟩