Exciton transition rate calculations based on the optical model potentials

The exciton transition rates are calculated using the imaginary part of both the phenomenological optical potential and the microscopic optical potential with Skyrme interaction. Basically the calculated results for the heavier nuclei support the conclusion obtained in the exciton model, i. e., the transition rate lambdasub(+) is proportional to the excited energy Esup(*) and independent of the mass number Asup(*) of the compound nucleus. If the chosen constant K approx.= 400 MeV3 in exciton model the calculated transition rates lambdasub(+) are fairly in agreement with the calculated lambdasub(opt) based on the optical model potentials. For the light nuclei the calculated lambdasub(opt) has the characteristic features, i. e., the transition rate increases as the mass number decreases when the exited energy is low and the transition rate decreases as the mass number decreases when the excited energy is high