"Improved Expression for Calculating Electron Transport Crosses Sections": Comment on Z. Rouabah Et Al(Phys. Lett. A 373 (2009) 282)

The transport of electron beam in the solids requires an accurate knowledge of their cross-sections with a target as functions of the projectile kinetic energy. Indeed, when we adjust a given analytical transport cross-section to tabulated data; the interpolation precision is considered as a validity criterion of the suggested model. In this co mmentary, we show that the transport cross section obtained by using the relat ivistic part ial wave expansion method (RPW EM) could be not agreed with a simplified analytical expression of Born appro ximation and contains only one free parameter depending only on atomic number, which is the case of the work of Rouabah et al(Phys. Lett.A 373 (2009) 282) . Indeed, we prove that the corrections made by Rouabah et al have led to unfavorable results and their work must be reviewed and revised.