Formaldehyde around 3.5 and 5.7-µm: measurement and calculation of broadening coefficients - Sorbonne Université Access content directly
Journal Articles Journal of Quantitative Spectroscopy and Radiative Transfer Year : 2010

Formaldehyde around 3.5 and 5.7-µm: measurement and calculation of broadening coefficients

Abstract

Self- and N2-broadening coefficients of H2CO have been retrieved in both the 3.5 and 5.7-μm spectral regions. These coefficients have been measured in FT spectra for transitions with various J (from 0 to 25) and K values (from 0 to 10), showing a clear dependence with both rotational quantum numbers J and K. First, an empirical model is presented to reproduce the rotational dependence of the measured self- and N2-broadening coefficients. Then, calculations of N2-broadening of H2CO were made for some for 3296 2 transitions using the semi-classical Robert-Bonamy formalism. These calculations have been done for various temperatures in order to obtain the temperature dependence of the line widths. Finally, self- and N2-broadening coefficients, as well as temperature dependence of the N2-widths has been generated to complete the whole HITRAN 2008 version of formaldehyde (available as supplementary materials).
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Dates and versions

hal-00744701 , version 1 (24-10-2012)

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David Jacquemart, Anne Laraia, Fridolin Kwabia Tchana, Robert R. Gamache, Agnes Perrin, et al.. Formaldehyde around 3.5 and 5.7-µm: measurement and calculation of broadening coefficients. Journal of Quantitative Spectroscopy and Radiative Transfer, 2010, 111 (9), pp.1209-1222. ⟨10.1016/j.jqsrt.2010.02.004⟩. ⟨hal-00744701⟩
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