Eur. Phys. J. A (2017) 53: 42
https://doi.org/10.1140/epja/i2017-12239-0

Regular Article - Theoretical Physics

Theoretical study of intermediate-mass fragments in proton-nucleus reactions at 200 MeV

USRA Space Science Department, NASA Marshall Space Flight Center, 35805, Huntsville, AL, USA

^* e-mail: mohammad.s.sabra@nasa.gov

Received: 22 September 2016
Accepted: 18 February 2017
Published online: 6 March 2017

Abstract

We have analyzed energy spectra, angular distributions, and mass and charge distributions of intermediate-mass fragments (IMFs) from the interaction of ²⁷Al, ⁵⁹Co, and ¹⁹⁷Au with 200 MeV protons. Calculations within the modified statistical model with final-state interaction were performed using SAPTON code. Within the experimental uncertainty and constraint, SAPTON shows good agreement with the data, and suggests that the IMFs are produced after the intra-nuclear cascade stage, and during the surface coalescence, as well as the evaporation/fission stages.