Quantitative measurement of CN radical in a low-pressure methane/air flame by cavity ring-down spectroscopy

被引：11

作者：

Mercier, X ^{[1
]}

Pillier, L ^{[1
]}

Pauwels, JF ^{[1
]}

Desgroux, P ^{[1
]}

机构：

[1] Univ Lille, UMR CNRS 8522, Ctr Etud & Rech Lasers & Applicat, Lab Cinet & Chim Combust, F-59655 Villeneuve Dascq, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE IV PHYSIQUE ASTROPHYSIQUE | 2001年 / 2卷 / 07期

关键词：

CN; cavity ring-down; flame;

D O I：

10.1016/S1296-2147(01)01238-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The ultrasensitivity of the cavity ring down spectroscopy technique has been used to detect the minor CN species in a premixed rich (phi = 1.2) methane/air flame stabilized at 53 hPa. The CN radical has been robed around 387 nm on the B-X (0-0) band. A peak concentration of 4.7 (.) 10(9) cm(-3) has been measured which corresponds to a mole fraction of 0.022 ppm. A detection limit of a few ppb has been reached despite the presence of an important off-resonance background due to the flame. (C) 2001 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

引用

页码：965 / 972

页数：8

共 24 条

[1] Simultaneous visualisation of transient species in flames by planar-laser-induced fluorescence using a single laser system [J].