MONTE-CARLO CALCULATIONS ON THE PASSAGE OF ELECTRONS THROUGH THIN-FILMS IRRADIATED BY 300 KEV ELECTRONS

A Monte Carlo method for the passage of electrons based on a single sc attering model is developed. A code based on this method is operable o n personal computers, and has been applied to analyze electron behavio r in a layered system consisting of Ti (an accelerator window), air, c ellulose triacetate (CTA) and backing material irradiated by 300 keV e lectrons. The energy spectra and the angular distributions of electron s on the CTA surface as well as depth distributions of energy depositi on in the CTA for various backing materials have been obtained. Some o f these results are compared with experiments, and show fairly good ag reement.