Charge-deposition in two-layer systems irradiated by electrons

On the basis of the data obtained by computer simulation and theoretical an alysis of the charge-deposition density in single slabs located in vacuum ( Alouani-Bibi et al., 1999. Can. J. Phys. 77(2), 127-136), a semi-empirical model that describes the charge-deposition distributions in two-layer syste ms irradiated by fast electron beams has been developed. The slabs consider ed are made of materials with atomic numbers from 4 to 79 and thicknesses f rom 0.5 to 50 mg/cm(2) irradiated by electron beams with energies from 1 to 10 MeV. Comparisons have been made of the results obtained by the present model and those obtained by the PENELOPE code. Results of charge-deposition distributions for different material combinations of the layers are also p resented. (C) 2001 Elsevier Science Ltd. All rights reserved.