Abstract
Average electron energy loss 〈Δε〉 per collision has been calculated in solid and liquid argon, krypton and xenon from published electron transport data. The general features of the energy loss are explained in terms of Schockley’s elastic sphere model on the mobility of hot electrons. Electron energy relaxation has been calculated by using 〈Δε〉 and momentum transfer cross sections measured by Shibamura et al.