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16 June 2004 Detection of vibrationally-excited O2 in COIL active medium
Ivan O. Antonov, Valery N. Azyazov, Sergey Yu. Pichugin, Nikolay I. Ufimtsev
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Proceedings Volume 5479, Laser Optics 2003: High-Power Gas Lasers; (2004) https://doi.org/10.1117/12.558196
Event: Laser Optics 2003, 2003, St. Petersburg, Russian Federation
Abstract
The vibrationally excited oxygen in O2(a1Δg)-I mixture was detected by emission spectroscopy. The analysis of a luminescence spectra of oxygen molecules on O2(b1Σg+,υ') → O2(X3Σg-,υ") transitions has shown, that vibrationally excited O2(b1Σg+) molecules up to υ=5 are generated in the active medium of chemical oxygen-iodine laser (COIL). The highest values of relative O2(b1Σg+,υ=1) population of 22% and O2(b1Σg+,υ=2) of 10% are reached for I2 content in an oxygen flow ≈1%. It is shown theoretically, that the relative populations of O2(X3Σg-), O2(a1Δg) and O2(b1Σg+) molecules at the first and the second vibrational levels are approximately equal because of fast EE energy exchange between oxygen molecules. Up to 20% of oxygen molecules in COIL active medium are vibrationally excited.
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Ivan O. Antonov, Valery N. Azyazov, Sergey Yu. Pichugin, and Nikolay I. Ufimtsev "Detection of vibrationally-excited O2 in COIL active medium", Proc. SPIE 5479, Laser Optics 2003: High-Power Gas Lasers, (16 June 2004); https://doi.org/10.1117/12.558196
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KEYWORDS
Oxygen
Iodine
Molecules
Luminescence
Chemical oxygen iodine lasers
Chemical lasers
Molecular lasers
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