OBSERVATION OF THE 0-1 ROTATIONAL TRANSITION IN PURE AND SEEDED OCS-BEAMS WITH A MICROWAVE STARK SPECTROMETER

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1981

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Ohio State University

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The 0-1 rotational transition in pure and Argon-seeded OCS-beams has been observed using a groove guide Stark spectrometer, coupled to a supersonic beam source. The width of the Gaussian lineshapes was found to be 2.2 kHz for an Argon-seeded beam and 4 kHz for a pure beam, showing Che difference in translational temperature for seeded and pure beams, respectively. From the direction of the Doppler shift, whose absolute value is a measure of the average beam velocity, it is concluded that the observed signals appear in emission rather than in absorption.

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