
%0 Journal Article
%T The Drift Velocity of Electrons in Water Vapour at Low Values of E/N
%J Australian Journal of Physics
%D 1990/10/01
%V 43
%N 6
%P 755-764
%K 
%R https://doi.org/10.1071/PH900755
%U https://www.publish.csiro.au/paper/PH900755 
%X The drift velocity of electrons in water vapour at 294 K has been measured over the E/N range 1·4 to 40 Td with an error estimated to be  35 Td. The present data show that J.lN decreases monotonically with decreasing E/N at low E/N values as observed by Wilson et al. (1975) and does not become independent of E/N as indicated by Lowke and Rees (1963). The present values, although lower than those of Lowke and Rees, lie within the combined error limits, except for values below 2 Td. The present data suggest that the momentum transfer cross section at low energies is approximately 10% larger than that obtained by Pack et al. (1962) from their drift velocity measurements. 
