Low Energy Gamow-Teller Transitions in deformed N = Z odd-odd Nuclei.

Authors :: Hiroyuki Morita
Yoshiko Kanada-En'yo
Source :: AIP Conference Proceedings; 2018, Vol. 2038 Issue 1, p020034-1-020034-6, 6p
Publication Year :: 2018
Abstract: We have investigated the Gamow-Teller transitions from <superscript>10</superscript>Be(0<superscript>+</superscript> <subscript>1</subscript> 1) →<superscript>10</superscript>B(1<superscript>+</superscript>0) and <superscript>22</superscript>Ne(0<superscript>+</superscript> <subscript>1</subscript> 1) → <superscript>22</superscript>Na(1<superscript>+</superscript>0) by using the isospin projected antisymmetrized molecular dynamics combined with the generator coordinate method (T βγ-AMD+GCM). We have found that the fragmentation of GT strength in <superscript>22</superscript>Ne(0<superscript>+ </superscript><subscript>1</subscript> 1) → <superscript>22</superscript>Na(1<superscript>+</superscript>0) can be explained by introducing K-bands originated from a S = 1 proton-neutron (pn) pair in the prolately deformed <superscript>20</superscript>Ne core. The SU(4)-symmetry breaking of the pn pair into S <subscript>z</subscript> = 0 and S <subscript>z </subscript>= ±1 plays an important role in this GT fragmentation. We have discussed the link of the SU(4)-symmetry and the GT fragmentation in the deformed systems by artificially changing the spin-orbit interaction on the GCM calculation. [ABSTRACT FROM AUTHOR]