Stopping Power of Electrons and Positrons for C, Al, Cu, Ag, Au, Pb, Fe, U, Ge, Si and Mo

Abstract

In this paper we present an empirical relation for total stopping power keV in terms of total energy (kinetic energy + rest mass energy) for electrons and positrons from 20 keV to 50000 and have been fitted by a two parameter approximation. These parameters depend upon the atomic number (Z) of the absorber and are applicable in absorbers of atomic number from Z=1 to 92. A fairly good agreement has been found between our simplified values for total stopping power of electrons and positrons for Carbon, Aluminum, Copper, Silver, Gold, Lead, Iron, Uranium, Germanium, Silicon and Molybdenum and that of Berger and Seltzer calculated values.