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

Bor Chen Chang, Trevor J. Sears

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A new technique combining supersonic jet expansion and transient frequency-modulation absorption experiments has been successfully developed for spectroscopic investigations of free radicals. The à ← X̃ transition spectra of NH2 and HCCl 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.

Original languageEnglish
Pages (from-to)288-292
Number of pages5
JournalChemical Physics Letters
Volume256
Issue number3
DOIs
StatePublished - 28 Jun 1996

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