Cavity ringdown laser absorption spectroscopy detection of formyl (HCO) radical in a low pressure name

被引：70

作者：

Scherer, JJ

Rakestraw, DJ

机构：

[1] Sandia National Laboratories, Combustion Research Facility, M / S 9055, Livermore

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 265卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(96)01403-0

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：

The formyl radical has been detected via the (A) over tilde - (X) over tilde system in a low pressure CH4/N-2/O-2 flame using cavity ringdown laser absorption spectroscopy. The direct absorption data obtained in these initial studies allows determination of the absolute HCO concentration in the flame of ca. 2.1(+/- 0.9) x 10(13) mol cm(-3), which is in excellent agreement with flame chemistry simulations. The extrapolated detection limit at 300 K of approximate to 1.4(+/-0.6) x 10(11) mol cm(-3) is comparable to that of other methods, including intracavity laser absorption spectroscopy.

引用

页码：169 / 176

页数：8

共 35 条

[1] THE ABSORPTION CROSS-SECTION OF THE HCO RADICAL AT 614.59 NM AND THE RATE-CONSTANT FOR HCO+HCO-]H2CO+CO [J].