Quantitative measurement of CN radical in a low-pressure methane/air flame by cavity ring-down spectroscopy - Université de Lille
Article Dans Une Revue Comptes Rendus de l'Académie des Sciences - Series IV - Physics Année : 2001

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

Résumé

The ultrasensitivity of the cavity ring down spectroscopy technique has been used to detect the minor CN species in a premixed rich (φ=1.2) methane/air flame stabilized at 53 hPa. The CN radical has been probed around 387 nm on the B–X (0–0) band. A peak concentration of 4.7·109 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.

Domaines

Chimie

Dates et versions

hal-02315759 , version 1 (14-10-2019)

Identifiants

Citer

Xavier Mercier, Laure Pillier, Jean-François Pauwels, Pascale Desgroux. Quantitative measurement of CN radical in a low-pressure methane/air flame by cavity ring-down spectroscopy. Comptes Rendus de l'Académie des Sciences - Series IV - Physics, 2001, 2 (7), pp.965-972. ⟨10.1016/S1296-2147(01)01238-0⟩. ⟨hal-02315759⟩

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