arXiv:nucl-th/9907081·v1·Nuclear Theory
Quasi-Deuteron Configurations in odd-odd N=Z nuclei
A. F. Lisetskiy🇩🇪 · R. V. Jolos🇩🇪 · N. Pietralla🇩🇪 · P. von Brentano (Institut fuer Kernphysik, Universitaet zu Koeln)🇩🇪
Abstract
The isovector M1 transitions between low-lying T=1 and T=0 states in odd-odd N=Z nuclei are analyzed. Simple analytical expressions for M1 transition strengths are derived within a single-j-shell approximation for both j=l+1/2 and j=l-1/2 cases. The large B(M1) values for the j=l+1/2 case are attributed to quasi-deuteron configurations. The B(M1) values for the j=l-1/2 case are found to be small due to partly cancellation of spin and orbital parts of the M1 matrix element.
Comments: 14 pages, 2 Postscript figures included, ReVTeX, submitted for publication to Physical Review C