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arXiv · 1511.03887

Shell model description of Gamow-Teller strengths in $pf$-shell nuclei

Vikas Kumar·P. C. Srivastava
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Abstract

A systematic shell model description of the experimental Gamow-Teller transition strength distributions in $^{42}$Ti, $^{46}$Cr, $^{50}$Fe and $^{54}$Ni is presented. These transitions have been recently measured via $β$ decay of these $T_z$=-1 nuclei, produced in fragmentation reactions at GSI and also with ($^3${He},$t$) charge-exchange (CE) reactions corresponding to $T_z = + 1$ to $T_z = 0$ carried out at RCNP-Osaka.The calculations are performed in the $pf$ model space, using the GXPF1a and KB3G effective interactions. Qualitative agreement is obtained for the individual transitions, while the calculated summed transition strengths closely reproduce the observed ones.

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Vikas Kumar, P. C. Srivastava. 2016-05-27. Shell model description of Gamow-Teller strengths in $pf$-shell nuclei. https://doi.org/10.1140/epja%2Fi2016-16181-3

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