https://doi.org/10.1051/epjconf/201922301053
Single and Double Charge Exchange Excitations of Spin-Isospin Mode
1
RIKEN Nishina Center,
Wako,
Saitama 351-0198,
Japan
2
Center for Mathematics and Physics, University of Aizu,
Aizu-Wakamatsu, Fukushima,
965-8580,
Japan
* e-mail: sagawa@ribf.riken.jp
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.