✦ LIBER ✦

Infrared spectroscopy of the products of a corona-excited supersonic expansion

✍ Scribed by Kenneth R. Comer; Stephen C. Foster

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 451 KB
Volume: 202
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85268-s

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✦ Synopsis

A novel corona-excited supersonic jet slit discharge is described, and its use as a source of rotationally cold free radicals for infrared direct absorption spectroscopy is discussed. The system was tested by detecting the rovibrational spectrum of CS and by observing the v2 band of NH2 3 'B,. Two different phase sensitive detection schemes were used. Although conventional frequency modulation of the infrared laser was successfully employed, a new population modulation scheme was more effective. Under the conditions described, rotational temperatures of the detected fragments were ~40 K.

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