Comparison between Geant4 and EGSnrc of dosimetric quantities and spectra simulation for electrons beam

This work aim is to investigate how Geant4 and EGSnrc simulate electrons of energies from 10 keV up to 150 keV. The characterization information is useful for dosimetric interests, especially for thin regions. That way this work presents a comparison of dosimetric quantities, spectra and percentage of electrons transport processes for two different geometries: a spherical and a laminar. For each geometry and situation simulated was collected: the absorbed energy (E_ab), the electron flux (spectra), the continuous slowing down approximation (CSDA) and the percentage of process of transport. This is a work that is been developed, but the preliminary results show for electrons of energies under 150kV, no significant differences on calculation of CSDA and significant differences for dose simulates for thin layer on spherical geometry. The evaluation of E_ab and CSDA for different layer thickness united to study of electron flux (spectra) and the percentage of process of transport can offer and explanation for the differences and similarities found between the Monte Carlo toolkits evaluated as well help us to define the best option for applications that needs electrons of kinetic energy under 150 keV.