Total cross sections for electron scattering from Ar, Kr and Xe

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Abstract
Total cross sections have been remeasured for 20-100 eV electron scattering from Ar, Kr and Xe, achieving an accuracy of better than 5%. In the present measurements a short collision cell of adjustable length has been used, which permitted the application of higher target pressures than previously. Consequently, a more accurate determination of this parameter was possible, resulting in more reliable data for the total cross section. It appeared that below 70 eV the present data were substantially lower (at most 10%) than the authors' previous ones and in very good agreement with the most recent experimental data of Nickel et al. (1983). Because of the influence of effusion through the cell apertures, an experimental test had to be carried out on the effective gas density as a function of the cell length. This was also of critical importance for putting the authors differential cross section measurements on an absolute scale, as will be discussed in a subsequent article.