Abstract
The accuracy of the Monte Carlo simulation of electron beam absorption in matter depends on fine details of the representation of multiple angular scattering and energy loss straggling. The paper refers to a technique of “grouping” the electron history in relatively short track length bins, which technique permits to work with Molière and Landau distributions. Corrections to these distributions - a modified screening angle and the inclusion of small radiative energy losses in the Landau distribution are introduced and the theoretical reasons for these corrections discussed. The results calculated for carbon absorbers are in very good agreement with experimental data on energy deposition, transmission coefficient, mean-square scattering angle and energy loss spectra.
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