Analytical Study of the Specific energy loss and radiation length X0 of Positron for Chromium

Abstract

We report in this research work the values  of Specific energy losses which are the same as   radiative S_Rad and collisional S_Coll stopping power ,total  stopping power S_Total in additional to the radiation length X₀ of positron's  ?⁺ for Chromium by employing Bethe-Bloch  relativistic formula which are performed by writing all the  related equations by MathCad2012with using the ionization potential I value for Chromium in the energy range of 0.1MeV-10MeV ,the results showing a that the collisional stopping power dominate more than radiative  stopping power in the values of total stopping power which are in good agreement with Estar program  results especially at the energies greater than 1.5MeV with respect to S_Coll .

Keywords: positrons  Bethe-Bloch  ,stopping power, radiative ,collision, mean excitation  energy.