Direct measurement of 1CH2 in flames by cavity ringdown laser absorption spectroscopy

被引：41

作者：

McIlroy, A ^{[1
]}

机构：

[1] Sandia Natl Labs, Livermore, CA 94551 USA

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 296卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(98)01022-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Singlet methylene is an important combustion intermediate, but has remained difficult to measure in flames. Cavity ringdown laser absorption spectroscopy (CRLAS) allows the sensitive and selective detection of (CH2)-C-1 with good spatial resolution. Singlet methylene has been detected by CRLAS in a series of rich, low-pressure methane flames with stoichiometries of 1.0, 1.2, 1.4 and 1.6. The measured relative concentration profiles are compared with laminar flame models utilizing detailed chemical reaction mechanisms. The data show good agreement with models at stoichiometries of 1.0 and 1.2, but increasingly poor agreement at richer stoichiometries. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：151 / 158

页数：8

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