On the cross section of low-energy electron collisions on CH4 and CO2

Recent calculations carried out by several authors on the cross sections of low-energy collisions with methane molecules show large discrepancies. We have used these cross sections to calculate the drift parameters of methane and carbon dioxide mixtures, at room temperature, by using a computing code we have written based on a modified Holstein-Boltzmann equation. The results are a very sensitive function of the cross sections we used, so we can modify them in order to obtain the best fit with the existing experimental data. (author)