Secondary interactions for Bremsstrahlung from a thick target

Bremsstrahlung emission, or radiation loss, is a dominant mechanism for energy dissipation of electron at relativistic energies greater than a few MeV when it is subjected to acceleration in the field of the nucleus or of the electrons. Monte-Carlo calculations for Bremsstrahlung spectra have been described for the case of thick tungsten target, when secondary interactions induced by the electrons and photons in the target such as energy loss, absorption, scattering and (e+, e-) pair production effects were taken into account. (author)