MAST-SEY: MAterial Simulation Toolkit for Secondary Electron Yield. A monte carlo approach to secondary electron emission based on complex dielectric functions

MAST-SEY is an open-source Monte Carlo code capable of calculating secondary electron emission using input data generated entirely from first principle (density functional theory) calculations. It utilizes the complex dielectric function and Penn’s theory for inelastic scattering processes, relativistic Schrödinger by means a partial-wave expansion method to govern elastic scattering. allows user include explicitly calculated momentum dependence function, as well utilize first-principle density states in generation, which provides more complete description underlying physics. In this paper we thoroughly describe theoretical aspects modeling, used code, present sample results obtained copper aluminum.