Australian Journal of Physics · 1964 · 15 citations · 0 references
Values of Townsend's energy factor kl for electrons in dry, carbon dioxide free air have been determined as a function of the parameter E Ip for 0 . 2 < E Ip < 40 at a temperature of 293°K. The results are first compared with those of other workers and are then utilized in a recomparison of the cross sections for electron attachment deduced from swarm and beam-type experiments.