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

Bor Chen Chang; Trevor J. Sears

doi:10.1016/0009-2614(96)00449-6

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

Bor Chen Chang, Trevor J. Sears

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

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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 Ã ← 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 language	English
Pages (from-to)	288-292
Number of pages	5
Journal	Chemical Physics Letters
Volume	256
Issue number	3
DOIs	https://doi.org/10.1016/0009-2614(96)00449-6
State	Published - 28 Jun 1996

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title = "Transient frequency-modulation absorption spectroscopy of free radicals in supersonic free jet expansions",

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 {\~A} ← {\~X} 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.",

author = "Chang, {Bor Chen} and Sears, {Trevor J.}",

note = "Funding Information: The authors thank Dr. Gregory E. Hall for helpful discussions. This work was carried out under Contract No. DE-AC02-76CH00016 with the U.S. Department of Energy and supported by its Division of Chemical Sciences, Office of Basic Energy Sciences.",

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T1 - Transient frequency-modulation absorption spectroscopy of free radicals in supersonic free jet expansions

AU - Chang, Bor Chen

AU - Sears, Trevor J.

N1 - Funding Information: The authors thank Dr. Gregory E. Hall for helpful discussions. This work was carried out under Contract No. DE-AC02-76CH00016 with the U.S. Department of Energy and supported by its Division of Chemical Sciences, Office of Basic Energy Sciences.

PY - 1996/6/28

Y1 - 1996/6/28

N2 - A new technique combining supersonic jet expansion and transient frequency-modulation absorption experiments has been successfully developed for spectroscopic investigations of free radicals. The Ã ← 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.

AB - A new technique combining supersonic jet expansion and transient frequency-modulation absorption experiments has been successfully developed for spectroscopic investigations of free radicals. The Ã ← 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.

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DO - 10.1016/0009-2614(96)00449-6

M3 - 期刊論文

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SN - 0009-2614

VL - 256

SP - 288

EP - 292

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3

ER -

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

Abstract

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