Calculation the electronic stopping power for charged particles by using Impact parameter

Abstract

Theoretical study is performed to calculate electronic stopping power by usingBohr equation and the equation which resulting from distant and close collisionswhich dependent on impact parameter of charged particles ( carbon ions and protons)interacted with organic compounds :[polypropylene (C3H6 ; ρ =0.9 gm/cm3),Polycarbonate (C16H14O3 ; ρ =1.2 gm/cm3), Polyvinylalcohol (C2H4O ; ρ =1.3gm/cm3), Polyvinylacetate (C4H6O2 ; ρ =1.19 gm/cm3)] by using Bragg rule once andanother by the ratio , in the range of energy [ 0.01 -1000 ] MeV .This equations are programmed by mathematical methods and done by Matlablanguage to obtain the required theoretical results and they shown as diagrams .thisresults compared with program SRIM 2012 to calculate stopping of this compounds,as they showed a good agreement with them