The role of the attractive nuclear potential in determining reaction cross sections

Studies the effects of refraction by the attractive nuclear potential in enhancing reaction cross sections at moderately low energies ( approximately 10 MeV/nucleon). While the effect is appreciable, it is not enough to account for the recently observed excess of cross section at these energies compared with much higher energies (several 100 MeV/nucleon). The effects of the real potential are embodied in a simple semiclassical expression.