Energy dependence of the total cross section for electron scattering by chloromethanes in the energy range 0.5-10 keV - art. no. 044702

The energy dependence of the total cross section for electron scattering by methane and its chloride compounds has been studied by considering the lat est experimental results and those predicted by the Born-Bethe theory. A si mple analytical expression depending on the number of electrons and the pol arizability of the target is proposed for these molecules. The energy depen dence given by this formula shows an asymptotic behavior for increasing ene rgy in better agreement with the Born-Bethe theory. The inconsistency with the Born-Bethe theory of the two-parameter formula given recently by Karwas z et nl. has also been shown.