Acosta, EvaLlovet Ximenes, XavierColeoni, Enrique AndrésRiveros, J. A.Salvat Gavaldà, Francesc2012-04-182012-04-181998-06-010021-8979https://hdl.handle.net/2445/24113A physical model for the simulation of x-ray emission spectra from samples irradiated with kilovolt electron beams is proposed. Inner shell ionization by electron impact is described by means of total cross sections evaluated from an optical-data model. A double differential cross section is proposed for bremsstrahlung emission, which reproduces the radiative stopping powers derived from the partial wave calculations of Kissel, Quarles and Pratt [At. Data Nucl. Data Tables 28, 381 (1983)]. These ionization and radiative cross sections have been introduced into a general-purpose Monte Carlo code, which performs simulation of coupled electron and photon transport for arbitrary materials. To improve the efficiency of the simulation, interaction forcing, a variance reduction technique, has been applied for both ionizing collisions and radiative events. The reliability of simulated x-ray spectra is analyzed by comparing simulation results with electron probe measurements.12 p.application/pdfeng(c) American Institute of Physics, 1998Mètode de MontecarloMètodes de simulacióMonte Carlo methodSimulation methodsinfo:eu-repo/semantics/article132259info:eu-repo/semantics/openAccess