QUANTITATIVE CONTRIBUTION OF ANTISYMMETRY TO THE NUCLEON-NUCLEUS POTENTIAL

Nucleon-nucleus potentials, local equivalent to the single configurati on RGM S-matrices of Tang and collaborators, are determined using iter ative-perturbative inversion techniques to establish the contributions of antisymmetry for a range of nuclei from H-3 to Ca-40. Parity depen dent potentials, which had been previously found for p+He-4, are estab lished for all nuclei studied. These potentials are strongly dependent on the target and the projectile energy. The magnitude of the parity dependent component decreases with increasing target size and, in most cases, with the nucleon energy. For the nuclei, H-3, He-3 and Li-6, w ith spin-coupling effects excluded, a strong dependence on the channel spin is found. A qualitative assessment is also made of the contribut ions of antisymmetry to the imaginary potential.