In this work the mass stopping power electron(MSPE) in human blood and skin tissues for electrons at energy range from 0.01MeV to 1000MeV are calculated in MeV cm2/g unit by summation the collisional SPE with adding density effect (δ) and radiative SPE contributions. Through using the Bragg’s additively rule for compound targets (Z/A) and from semi-empirical (SPE) equations in terms of kinetic energy E(MeV) for electrons in the ranges of the low energies from 0.01MeV to 0.7MeV and the high energies from 0. 7MeV to 1000MeV then have been fitted by a three-parameter approximation written by MALAB2016 language. From fitting results with experimental SPE data calculated using ESTAR program and the error ration and correlation coefficient are calculated. All the results of these equations were compared with ESTAR program data and written by MALAB2016 language. The purpose of this paper is equipping up to date mass SPE information, with focus on the requirements of electron beam therapy (EBT) where electrons are directed to a tumor position.

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