Abstract

The real part of the alpha-nucleus potential is calculated by double folding shell-model matter distributions of the projectile and target nuclei with effective nucleon-nucleon potentials obtained either phenomenologically, or microscopically from the Reid soft-core potential. Comparisons are made with experimental alpha-scattering data at incident energies near the Coulomb barrier, where effects due to the imaginary potential at large distances are negligibly small. The range of the effective nuclon-nucleon force at intermediate distances and the effective nucleon-alpha interaction are investigated.

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