Temperature Measurement in a CO2 Laser Beam by Laser-Induced Fluorescence of O2-Reference-Cited by-同舟云学术

Temperature Measurement in a CO2 Laser Beam by Laser-Induced Fluorescence of O2

Published:1990-03 Issue:3 Volume:44 Page:442-447
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Lalo C.¹,Masanet J.¹,Deson J.¹,Ben-Aim R.¹,Rostas J.¹

Affiliation:

1. Laboratoire de Chimie Générale, UPMC-CNRS URA 40870, Tour 55, 4e Etage, 4 Place Jussieu, 75252 Paris Cedex 05, France (C.L., J.M., J.D., R.B.-A.); and Laboratoire de Photophysique Moléculaire du CNRS and IPCM de L'Université Paris-Sud, Be 213, Université de Paris-Sud, 91405 Orsay, France (J.R.)

Abstract

A mixture of SF6-O2 is irradiated by an infrared (10.6 μm) cw CO2 laser. Absorption by SF6, and subsequent collisional energy transfer, heats the mixture. Vibrationally excited ground-state O2 is detected at levels v = 0, 1, and 2 by laser-induced fluorescence in the B3 Σu− X3Σ8− – Schumann-Runge system with an ArF laser (193.3 nm). Comparison of the observed LIF spectrum with spectra simulated at various temperatures shows that the molecular oxygen in the IR laser beam is thermalized at a temperature of about 700 K.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/0003702904086263

Reference16 articles.

1. Laser-fluorescence imaging of O_2 in combustion flows using an ArF laser

2. High resolution absorption cross section measurements and band oscillator strengths of the (1, 0)−(12, 0) Schumann-Runge bands of O2

3. Oxygen absorption in the spectral range 180–300 nm for temperatures to 3000 K and pressures to 50 atm.

4. Single vibronic emissions from NO B 2Π (v′ = 7) and O2 B 3Σ−u (v′ = 4) excited by 193 nm ArF laser

5. Feasibility of measuring temperature and density fluctuations in air using laser-induced O<inf>2</inf>fluorescence

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1. Superradiance effects on the infrared absorption and vibrational temperature of optically pumped molecules;Infrared Physics;1993-12

2. Air microwave-induced plasma: Detection of NO in the post-discharge using an ArF laser;Plasma Chemistry and Plasma Processing;1993-06

3. An investigation of nonsimultaneous laser-induced fluorescence;31st Aerospace Sciences Meeting;1993-01-11

4. Some Comments on the Temperature Measurement in a CO2 Laser Beam by Laser-Induced Fluorescence of O2: Improvement of the Method;Applied Spectroscopy;1991-03