Detection of atomic oxygen in flames by absorption spectroscopy

S. Cheskis; S. A. Kovalenko

doi:10.1007/BF01082398

Detection of atomic oxygen in flames by absorption spectroscopy

S. Cheskis^*, S. A. Kovalenko

^*Corresponding author for this work

School of Chemistry

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The absolute concentration of atomic oxygen in an atmospheric pressure hydrogen/air flame has been measured using Intracavity Laser Spectroscopy (ICLS) based on a dye laser pumped by an argon-ion laser. Absorptions at the highly forbidden transitions at 630.030 nm and 636.380 nm were observed at an equivalent optical length of up to 10 km. The relatively low intensity of the dye laser avoids photochemical interferences that are inherent to some other methods for detecting atomic oxygen. The detection sensitivity is about 6 × 10¹⁴ atom/cm³ and can be improved with better flame and laser stabilization.

Original language	English
Pages (from-to)	543-546
Number of pages	4
Journal	Applied Physics B: Lasers and Optics
Volume	59
Issue number	5
DOIs	https://doi.org/10.1007/BF01082398
State	Published - Nov 1994

Keywords

32.20
42.55
82.80

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AB - The absolute concentration of atomic oxygen in an atmospheric pressure hydrogen/air flame has been measured using Intracavity Laser Spectroscopy (ICLS) based on a dye laser pumped by an argon-ion laser. Absorptions at the highly forbidden transitions at 630.030 nm and 636.380 nm were observed at an equivalent optical length of up to 10 km. The relatively low intensity of the dye laser avoids photochemical interferences that are inherent to some other methods for detecting atomic oxygen. The detection sensitivity is about 6 × 1014 atom/cm3 and can be improved with better flame and laser stabilization.

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Detection of atomic oxygen in flames by absorption spectroscopy

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