MICROWAVE INTENSITY MEASUREMENTS AT LOW TOTAL AND PARTIAL PRESSURES

This work has been supported by the National Aeronautics and Space Administration. $^{1}$Howard W. Harrington, J. Chem. Phys. 46 3698-3707 (1967). $^{2}$Edgar A. Rinehart, 155th Nat'l ACS meeting, Div. of Anal. Chem., paper No. 150.Author Institution: Department of Physics, University of WyomingOperation of a microwave spectrometer under saturated conditions has been demonstrated as a means of separating relaxation time information from molecular concentration information for pure rotational $transitions.^{1}$ This technique has been shown to yield accurate partial pressure determinations for the absorbing $species.^{2}$ At very low pressures $(