A cw laser absorption diagnostic for methyl radicals
作者： D.F. Davidson , A.Y. Chang , M.D. Di Rosa , R.K. Hanson
DOI: 10.1016/0022-4073(93)90067-R
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摘要: Abstract Absorption of narrow-line laser radiation by methyl radicals produced at high temperatures was studied in the Herzberg β 1 band near 216nm. cw for these measurements generated a ring dye system using intracavity BBO frequency doubling. Methyl were shock wave heating five selected source compounds: azomethane, iodide, tetramethyl tin, silane and ethane. The variation with wavelength CH 3 absorption coefficient between 210 225 nm measured 1625 K 1.25 atm ethane/Ar iodide/Ar gas mixtures. temperature from 1350 to 2450 216.615 four compounds. Using this resulted typical detectivity limit 2ppm 1650 K, atm, L = 10 cm, SNR unity detection bandwidth 500 kHz.
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R. Kee, F. Rupley, J. Miller, Chemkin-II : A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Chemical Kinetics Sandia Report, SAND89-8009B. ,(1989) , 10.2172/5681118
Albert Y. Chang, Michael D. DiRosa, David F. Davidson, Ronald K. Hanson, Rapid tuning cw laser technique for measurements of gas velocity, temperature, pressure, density, and mass flux using NO Applied Optics. ,vol. 30, pp. 3011- 3022 ,(1991) , 10.1364/AO.30.003011
Takao Tsuboi, Optische Untersuchung der Methanoxydation hinter reflektierten Stosswellen Japanese Journal of Applied Physics. ,vol. 14, pp. 1371- 1380 ,(1975) , 10.1143/JJAP.14.1371
M. E. Jacox, Electronic Energy Levels of Small Polyatomic Transient Molecules Journal of Physical and Chemical Reference Data. ,vol. 17, pp. 269- 511 ,(1988) , 10.1063/1.555822
The Bakerian Lecture. The Spectra and Structures of Free Methyl and Free Methylene Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 262, pp. 291- 317 ,(1961) , 10.1098/RSPA.1961.0120
Takao Tsuboi, UV Absorption Study on the Reaction of Methyl Radicals behind Shock Waves Japanese Journal of Applied Physics. ,vol. 17, pp. 709- 716 ,(1978) , 10.1143/JJAP.17.709
K. Kato, Second-harmonic generation to 2048 Å in Β-Ba 2 O 4 IEEE Journal of Quantum Electronics. ,vol. 22, pp. 1013- 1014 ,(1986) , 10.1109/JQE.1986.1073097
P. G. Wilkinson, R. S. Mulliken, Far Ultraviolet Absorption Spectra of Ethylene and Ethylene‐d4 The Journal of Chemical Physics. ,vol. 23, pp. 1895- 1907 ,(1955) , 10.1063/1.1740601
R. Zellner, F. Ewig, Computational study of the methyl + oxygen chain branching reaction The Journal of Physical Chemistry. ,vol. 92, pp. 2971- 2974 ,(1988) , 10.1021/J100321A050
Toshio Nakayama, K. Watanabe, Absorption and Photoionization Coefficients of Acetylene, Propyne, and 1‐Butyne Journal of Chemical Physics. ,vol. 40, pp. 558- 561 ,(1964) , 10.1063/1.1725154