Fractional energies of backscattered electrons and photon yields by electrons

Fractional energies f(BE) Of backscattered electrons and the photon yields Y from semi-infinite absorbers bombarded by electrons have been calculated with the ITS Monte Carlo system, and analytic expressions have been formula ted for these parameters. Besides the Monte Carlo results, experimental dat a collected from the literature have been used to determine the expression for f(BE) The two expressions are applicable to absorbers of atomic numbers from 4 to 92. The region of incident-electron energy considered is from 5 keV to 100 MeV for f(BE), and from 0.1 to 100 MeV for Y. (C) 1999 Elsevier Science Ltd. All rights reserved.