Parameterization of Nuclear Hulthén Potential for Nucleus-Nucleus Elastic Scattering

In contrast to Gaussian or Woods-Saxon potential a two-term four parameter nuclear Hulth′en type interaction is considered to describe the α-α, α-3He and α-3H systems. By exploiting the phase function method, scattering phase shifts are computed up to ELab = 100 MeV for the α-α system and ELab = 15 Me V for α-3He and α-3H systems.The S-wave phase shift δ0for the α-α system tends to 2π and δ3/2-for the α-3He system tends to π, in the limit of zero energy. Reasonable agreements in phase shifts with the standard data are obtained with this simple potential model except for the 5/2-states of α-3He and α-3H systems. With an additional energy-dependent correction factor to our potential, a good agreement with experimental data is obtained for 5/2-states. We have also compared our results with the convenient Born approximations.