Global phenomenological and microscopic optical model potentials for alpha

¹ Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
² College of Physics and Electronic Science, Shanxi Datong University, Datong 037009, China
³ China Institute of Atomic Energy, PO Box 275(41), Beijing 102413, China

^a e-mail: hanyl@ciae.ac.cn

Published online: 13 September 2017

Abstract

The global phenomenological and microscopic optical model potentials for alpha with the incident energy up to 400 MeV are obtained. The global phenomenological optical model potential is extracted by simultaneously fitting the experimental data of total reaction cross sections and elastic scattering angular distributions in the mass range of target nuclei 20 ≤ A ≤ 209. The microscopic optical model potential is obtained by the Green function method through nuclear matter approximation and local density approximation based on the effective Skyrme nucleon-nucleon interaction. Both optical model potentials are used to calculate the reaction cross sections and elastic scattering angular distributions for the target nuclei in the mass range 12 ≤ A ≤ 209 at incident alpha energies up to 400 MeV. The calculated results are compared with the experimental data, and the calculated results by phenomenological and microscopic optical model potentials are also compared with each other.