Abstract
Working within the framework of the Coulomb-modified Glauber model, we instead of conventionally using the Gaussian approximation to the basic input nucleon-nucleon (NN) amplitude, evaluate it from a three-parameter phenomenological NN phase shift function. At a given projectile energy the parameters of the NN phase shift function are varied to fit the alpha-nucleus elastic-scattering data. It is found that once the parameters of the NN phase shift function are fixed, it very nicely reproduces the available elastic alpha-scattering data on other nuclei at the same energy. By applying this procedure, a reasonably good account of elastic-scattering data for alpha-Ca40-48, Ni-58, Sn-116 and Pb-208 have been achieved in the energy range about 0.2 GeV-1.37 GeV.