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26 January 1994 High-resolution spectroscopy of hot bands and nonequilibrium energy distribution of methane in a supersonic jet
G. S. Baronov, D. K. Bronnikov, S. A. Gavrikov, V. D. Rusanov, Yu. G. Filimonov, J. C. Hilico
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Proceedings Volume 2205, 11th Symposium and School on High-Resolution Molecular Spectroscopy; (1994) https://doi.org/10.1117/12.166221
Event: High Resolution Molecular Spectroscopy: 11th Symposium and School, 1993, Moscow, Russian Federation
Abstract
Experimental observation of the vibrational-rotational structure of pentad-dyad and octad- pentad hot bands for methane under non-equilibrium conditions of supersonic jet has been presented in our previous paper. New source of supersonic jet has been developed to increase stagnation temperature, temperature of gas before expanding in supersonic nozzle, up to 1300 K. Spectra of pentad-dyad, octad-pentad and tetradecad-octad hot bands (125 lines) for 1260 - 1298 cm-1 and population of appropriate energy levels have been measured under these new experimental conditions for methane's stagnation temperature 800 - 1300 K using a pulsed IR spectrometer based on tunable diode laser.
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G. S. Baronov, D. K. Bronnikov, S. A. Gavrikov, V. D. Rusanov, Yu. G. Filimonov, and J. C. Hilico "High-resolution spectroscopy of hot bands and nonequilibrium energy distribution of methane in a supersonic jet", Proc. SPIE 2205, 11th Symposium and School on High-Resolution Molecular Spectroscopy, (26 January 1994); https://doi.org/10.1117/12.166221
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KEYWORDS
Methane
Spectroscopy
Temperature metrology
Infrared spectroscopy
Laser development
Laser spectroscopy
Tunable diode lasers
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