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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.
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Submitted on : Monday, November 15, 2004 - 4:52:58 PM
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J.-C. Thomas, N.L. Achouri, J. Äystö, R. Béraud, Bertram Blank, et al.. Beta-decay properties of $^{25}$Si and $^{26}$P. European Physical Journal A, EDP Sciences, 2004, 21, pp.419-435. ⟨10.1140/epja/i2003-10218-8⟩. ⟨in2p3-00023307⟩



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