pISSN 0374-4914 eISSN 2289-0041

## Research Paper

New Phys.: Sae Mulli 2020; 70: 29-34

Published online January 31, 2020 https://doi.org/10.3938/NPSM.70.29

## Parametrized Phase Shift Model Analysis for 350 MeV $^{7}$Li Elastic Scattering on $^{12}$C and $^{28}$Si

Yong Joo KIM*

Department of Physics, Jeju National University, Jeju 63243, Korea

Correspondence to:yjkim@jejunu.ac.kr

Received: September 2, 2019; Revised: October 29, 2019; Accepted: October 29, 2019

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

### Abstract

The elastic scattering cross sections of 350 MeV $^{7}$Li incident on $^{12}$C and $^{28}$Si target nuclei were analyzed using the parametrized phase shift model. The calculated results reproduced satisfactorily the structures of the angular distribution, and a comparison with experiment gave excellent agreement over the entire angular range. The diffractive oscillatory structures observed in the angular distributions can be understood in terms of the strong interferences between the near-side and the far-side scattering amplitudes while the scattering behavior of a structureless decreasing pattern at large angles is entirely determined by the far-side scattering. The parametrized phase shift was employed to evaluate the optical potential by using the inversion method. The calculated inversion potentials were compared to the Woods-Saxon potentials obtained from an optical model analysis.

Keywords:

Parametrized phase-shift model, Inversion potential, Elastic scattering, $^{7}$Li + $^{12}$C, $^{7}$Li + $^{28}$Si