
%0 Journal Article
%A Milloy, HB 
%A Reid, ID 
%A Crompton, RW 
%T Zero-field Mobility for Electrons in Dry and Humid Air
%J Australian Journal of Physics
%D 1975/04/01
%V 28
%N 2
%P 231-234
%K 
%R https://doi.org/10.1071/PH750231
%U https://www.publish.csiro.au/paper/PH750231 
%X The zero-field mobility of electrons in dry and humid air at 294 K has been studied with drift tube techniques. For air containing 1.5 % water vapour (50 % relative humidity) the zero-field mobility was found to be 8.4 ± 0.2 X 105 cm s&#8722;l Td&#8722;l. The zero-field mobility of electrons in dry air (4.7 ± 0.2 x 106 cm s&#8722;l Td&#8722;l) was deduced from measurements in which small quantities of CO2 Were added to reduce the electron energy. It is estimated that the momentum transfer cross section for electron&#8211;oxygen collisions, at near thermal energies, is at least four times smaller than it is for electron&#8211;nitrogen collisions. 
