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arXiv · 1801.09076

Gamow-Teller transitions from high-spin isomers in $N=Z$ nuclei

H. Z. Liang·H. Sagawa·M. Sasano·T. Suzuki·M. Honma
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Abstract

Gamow-Teller (GT) transitions from high-spin isomers are studied using the sum-rule approach and the shell model. The GT transition strengths from the high-spin isomeric states show a stronger collectivity than those from the ground states in two $N=Z$ nuclei, $^{52}$Fe and $^{94}$Ag. It is argued that the spin-up and spin-down Fermi spheres involved in the GT transitions from the high-spin isomeric states play important roles. These Fermi spheres are analogous to the isospin-up and isospin-down Fermi spheres for the GT transitions from the ground states in $N>Z$ nuclei and create a strong collectivity.

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H. Z. Liang, H. Sagawa, M. Sasano, T. Suzuki, M. Honma. 2018-07-13. Gamow-Teller transitions from high-spin isomers in $N=Z$ nuclei. https://doi.org/10.1103/physrevc.98.014311

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