Single and Double Charge Exchange Excitations of Spin-Isospin Mode
RIKEN Nishina Center,
2 Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima, 965-8580, Japan
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Published online: 4 December 2019
We study the sum rules of double Gamow-Teller (DGT) excitations through double spin-isospin operator (σt)2 In general, 2+states in the granddaughter nuclei have dominant transition strength in DGT excitations and 0+states are weak, except in T = 1 mother nuclei in which 0+strength is competitive with 2+strength. A possibility to extract the unit cross section for the DGT transition strength is pointed out in the (#x03C3;t)2 excitation of double isobaric analog state (DIAS) in T = 1 nuclei.
© The Authors, published by EDP Sciences, 2019
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