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The study of thespectral parameters, and their variations with temperature and pressure, ofmethane lines is important for the remote sensing of atmospheres .Methane is a minor component of the terrestrial atmosphere and his impact isimportant (methane is the third most abundant greenhouse gas ).Furthermore, methane is also present in the atmosphere of others planets [3-5]and stellar objects [6,7].
In this work,the collisional shift of absorption lines in the ν3 band of methanehas been measured for several high temperatures (up to 600 K). This studyhas been made with a two-beams tunable diode-laser spectrometer.
The collisionalline shift has been determined using a procedure described elsewhere .So far we know, there is not a general law for the temperature dependence ofthe collisional line shift commonly used in the literature . Knowingthat, different laws have been tested to determine the temperature dependenceof the line shift. The observations will be discussed.
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 E. Karkoschka, M. Tomasko, Icarus 202, 287-309 (2009)
 I. de Pater, J.J. Lissauer, PlanetarySciences. Cambridge university press, Second Edition (2011)
 V. Boudon, J.-P. Champion, T. Gabard, M.Loëte, A. Coustenis, C. De Bergh, B. Bézard, E. Lellouche, P. Drossart, M.Hirtig, A. Negrão, and C.A. Griffith, Société Française de Physique – Sciencesde la Matière et Technologies, Société française de physique 11, 13-16 (2008)
 E.L. Gibb, M.J. Mumma, N. Dello Russo, M.A.DiSanti, K. Magee-Sauer, Icarus 165,391-406 (2003)
 B. Vispoel, M. Dhyne, J.-C. Populaire, G. Blanquet,M. Lepère, J. of Mol. Spectrosc. 298, 7-10 (2014)
 R.R. Gamache, J. Lamouroux, V. Blot-Lafon, E.Lopes, J. Quant. Spectrosc. and Radiat.Transfer 135, 30-43 (2014)
|Publication status||Published - 2 Sept 2014|
|Event||The 23rd International Conference on High Resolution Molecular Spectroscopy - Bologne, Italy|
Duration: 2 Sept 2014 → 6 Sept 2014
|Conference||The 23rd International Conference on High Resolution Molecular Spectroscopy|
|Period||2/09/14 → 6/09/14|
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Muriel Lepere (Manager)Technological Platform Optics, Lasers and spectroscopy
Facility/equipment: Technological Platform