Low Pressure Flame Determinations of Rate Constants for OH(A) and CH(A) Chemiluminescence

GREGORY P. SMITH; JORGE LUQUE; CHUNG PARK; JAY B. JEFFRIES; DAVID R. CROSLEY

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Low Pressure Flame Determinations of Rate Constants for OH(A) and CH(A) Chemiluminescence

机译：低压火焰测定OH（A）和CH（A）化学发光速率常数

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Absolute excited state concentrations of OH(A), CH(A,B), and C_2(d) were determined in three low pressure premixed methane-air flames. Two-dimensional images of Chemiluminescence from these states were recorded by a filtered CCD camera, processed by Abel inversion, and calibrated against Rayleigh scattering. Using a previously validated 1-D flame model with known chemistry and excited state quenching rate constants, rate constants are extracted for the reactions CH + O_2→OH(A) + CO and C_2H + O→CH(A,B) + CO at flame temperatures. Variations of flame emission intensities with stoichiometry agree well with model predictions.

机译：在三个低压预混合甲烷-空气火焰中确定了OH（A），CH（A，B）和C_2（d）的绝对激发态浓度。来自这些状态的化学发光的二维图像由一台经过滤波的CCD相机记录，经过Abel逆处理，并针对瑞利散射进行了校准。使用具有已知化学性质和激发态猝灭速率常数的先前验证的一维火焰模型，在以下温度下提取CH + O_2→OH（A）+ CO和C_2H + O→CH（A，B）+ CO反应的速率常数火焰温度。火焰发射强度随化学计量的变化与模型预测非常吻合。

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来源
《Combustion and Flame》 |2002年第2期|p.59-69|共11页
作者
GREGORY P. SMITH; JORGE LUQUE; CHUNG PARK; JAY B. JEFFRIES; DAVID R. CROSLEY;
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作者单位

Molecular Physics Laboratory, SRI International, Menlo Park, CA 94025, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类燃料与燃烧;
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Low Pressure Flame Determinations of Rate Constants for OH(A) and CH(A) Chemiluminescence

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