Beta-decay properties of ${}^{25}$Si and ${}^{26}$P

Abstract

The $\beta$-decay properties of the neutron-deficient nuclei ${}^{25}$Si and ${}^{26}$P have been investigated at the GANIL/LISE3 facility by means of charged-particle and $\gamma$-ray spectroscopy. The decay schemes obtained and the Gamow-Teller strength distributions are compared to shell-model calculations based on the USD interaction. B(GT) values derived from the absolute measurement of the $\beta$-decay branching ratios give rise to a quenching factor of the Gamow-Teller strength of 0.6. A precise half-life of 43.7 (6) ms was determined for ${}^{26}$P, the $\beta$- (2)p decay mode of which is described.

References in corpus (2)

• The effective g_A in the pf-shell
• On the asymmetry of Gamow-Teller beta-decay rates in mirror nuclei in relation with second-class currents

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