✦ LIBER ✦

Transient frequency-modulation absorption spectroscopy of free radicals in supersonic free jet expansions

✍ Scribed by Bor-Chen Chang; Trevor J. Sears

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 317 KB
Volume: 256
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00449-6

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✦ Synopsis

A new technique combining supersonic jet expansion and transient frequency-modulation absorption experiments has been successfully developed for spectroscopic investigations of free radicals. The ,~ ~ X transition spectra of NH 2 and HCC1 at near-infrared wavelengths have been obtained using this technique for demonstration. In addition, a combination of temporal waveform acquisition and frequency scan using this new technique has produced interesting information on the velocity and density distributions of supersonic jet expansion systems.

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