Study of the stopping power to the protons in vehicles C3H3N , CH2O

Abstract

In this research the electronic stopping power was calculated theoretically by use formulations Beth–Bloch and projectiles (Polyoxymethylene (CH2O) ,Polyacrylonitrile (C3H3N)) by protons shells by using Bragg’s Rule for compounds. Also programming the by use (MATLAB) language. And calculate the values of Bloch's correction based on the factor η in energy range MeV (0.1-1000)MeV. Also studied Bloch's correction for both compounds in the same rage of energy .The calculations were compared with the experimental data of the software SRIM 2012. This comparison shows that: Bethe-Bloch formulas are in good agreement with the experimental data. Also, Bloch correction is quantum correction and it has small negative values. The best calculations appear in the high energy region by using Bloch correction. Bloch correction has been succeeding by closer Bethe calculations from the experimental data for SRIM 2012. Also elicit equation Semi Empirical for stopping power for compounds and Calculation The Correlation Coefficient for equation by comparison with results SRIM 2012 by use Curve expert 1.3 program.