Role of isospin in the statistical decay of the giant dipole resonance built on excited states
Harakeh MN., Dowell DH., Feldman G., Garman EF., Loveman R., Osborne JL., Snover KA.
The statistical γ-decay of the giant dipole resonance built on excited states was investigated in several nuclei in the sd-shell region. The yield of high-energy γ-rays in self-conjugate nuclei populated by T = 0 entrance channels was found to be strongly inhibited compared to the yield from T ≠ 0 entrance channels and compared to that in nuclei with Z ≠ Z. This can be explained as due to good isospin purity in the compound nuclear states at high excitation energy. © 1986.