Gas analyzing method and apparatus for performng the same

Details Gas analyzing method and apparatus for performng the same Gas analyzing method and apparatus for performng the same

1974-08-28

1976-08-03

Chatmon, Jr., Saxfield

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

23254E, 324 5R, 324 585C, 324 5AC, G01R 2704

Patent

active

039731863

ABSTRACT:
A gas sample including polar molecules is introduced into a cavity (an internal space) of a cavity resonator, the cavity being provided therein with a Stark electrode which is vertically of a microwave electric field resonating at the microwave frequency, and a direct current Stark voltage which is applied to the Stark electrode together with a sine wave modulation voltage is swept, resulting in a microwave absorption spectrum representing the polar molecules in the gas sample. The resonance frequency of the cavity may be made variable to observe various polar molecules individually.

REFERENCES:
patent: 2849613 (1958-08-01), Dicke
patent: 3691454 (1972-09-01), Hrubesh et al.
"Molecular Dipole Moments and Stark Effect" by Townes et al., Physical Review, vol. 77, No. 4, Feb., 1950, pp. 500-505, QC-1; P-4.
"Plane Parallel Plate Transmission Line Stark Microwave Spectrograph" by S. A. Marshall, Review of Scientific Instruments, vol. 28, No. 2 Feb., 1957 pp. 134-137.

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