Abstract:Background: Differential cross sections for the (p, n) and (n, p) reactions on 90 Zr over the interval of 0 − 50 MeV excitation energy were used to determine the corresponding GT strengths, and the resulting quenching factor ≈ 0.9 with respect to the Ikeda sum rule. In this procedure the contribution of the isovector spin monopole (IVSM) strength was subtracted from the total strength without taking into account the interference between the GT and the IVSM modes.Purpose: To determine the quantitative effect of… Show more
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