
%0 Journal Article
%A Burton, CH 
%A Lasich, WB 
%A Noon, JH 
%A Parsons, RW 
%T The Refractive Index of Methyl Chloride at 10 Gc/s
%J Australian Journal of Physics
%D 1963/09/01
%V 16
%N 3
%P 434-438
%K 
%R https://doi.org/10.1071/PH630434
%U https://www.publish.csiro.au/paper/PH630434 
%X The dielectric behaviour of gases in an electromagnetic field has been studied theoretically by Van Vleck and Weisskopf (1945). They found expressions for the contributions to the absorption coefficient a and the refractive index n at a frequency v arising from transitions between quantum states j and i. If v is much less than the natural frequency Vii associated with the transition, and if the line width is also small compared with Vii' their results give: 
