Backscattering from Gold Irradiated with 15–40 keV Photons

Abstract

To investigate the simulation of ionization process by synchrotron radiation, energy deposition by electrons reflected from gold irradiated with photons was calculated with a Monte Carlo transport code ITS and compared with measured backscattering factors for 10–40 keV monoenergetic photons from synchrotron radiation. The calculated factors almost agreed with the measured, while the agreement was not satisfactory at 15 and 40 keV. Without M- and N-shell electrons the degree of the agreement became worse. Prom calculated electron energy reflection and the spectra, the influence of the M- and N-shell electrons and Auger electrons was found to increase with approaching the absorption edges, especially L-shells more largely than K-shells.