Collision-induced first overtone band of in binary mixtures – and –CO

Autor: S.Paddi Reddy, C. Stamp, M. Abu-Kharma, G. Varghese
Rok vydání: 2006
Předmět:
Zdroj: Journal of Quantitative Spectroscopy and Radiative Transfer. 97:332-343
ISSN: 0022-4073
DOI: 10.1016/j.jqsrt.2005.04.012
Popis: Enhancement spectra of the collision-induced absorption (CIA) of H 2 in its first overtone region 7500– 9500 cm - 1 in binary mixtures H 2 – N 2 and H 2 –CO were studied at 298 K for base densities of H 2 in the range 89–145 amagat and for partial densities of N 2 and CO in the range 19–392 amagat. The observed spectra confirm that the isotropic overlap induction is absent in the 2–0 band of H 2 unlike in the CIA spectra of the fundamental band of H 2 . Binary and ternary absorption coefficients were determined from the integrated absorption coefficients of the band. Enhancement absorption profiles of H 2 – N 2 and H 2 –CO consist of a total of 434 components of quadrupolar double transitions. Profile analysis of the spectra was carried out using Birnbaum–Cohen line shape function for the individual components of the band and characteristic line shape parameters were determined from the analysis.
Databáze: OpenAIRE
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