Diffusion and ionization studies for electron swarms in carbon monoxide and carbon dioxide

The ratio of the radial diffusion coefficient to mobility D r /μ has been measured for electron swarms moving through uniform electric fields in carbon monoxide and carbon dioxide for the range 3 less-than-or-eq, slant E/p less-than-or-eq, slant 500 and 10 less-than-or-eq, slant E/p less-than-or-eq, slant 550 V cm −1 Torr −1 at 0 °C respectively using the analytical methods described by Kontoleon et al (1972). The values of D r /μ in the range E/p >50 are the first results in both the gases. The ionization coefficient α/ p has been calculated from the current-growth experiments in carbon monoxide and carbon dioxide in the range 50 less-than-or-eq, slant E/p less-than-or-eq, slant 500, and the values of α in CO, in the range E/p >90, have been measured for the first time. The present experimental data obtained for carbon dioxide is used to calculate the electron energy distribution and the mean energy using the techniques described by Lucas (1969).