Projects per year
In the present work, we have developed a high-temperature absorption cell for infrared spectroscopy. This absorption cell can contain gases of the room temperature up to 650 K without temperature gradient. The construction of the cell and its technical features are described in detail in this paper. In order to demonstrate the feasibility and the interest of the cell, we have measured the N<inf>2</inf>-, O<inf>2</inf>- and air-broadening coefficients of, respectively, six and three absorption lines in the <sup>ν4</sup> band of methane at four temperatures (350, 425, 500, 575 K). The measurements of these coefficients was realized with a tunable diode-laser spectrometer. The line parameters were obtained by fitting to the experimental profile the Voigt line shape and the Rautian and Galatry models taking into account the collisional narrowing. For these lines, the n parameter of the temperature dependence has been determined.
|Translated title of the contribution||Spectroscopie Infrarouge à hautes températures : Coefficients d'élargissement par l'azote et l'oxygène du méthane dans la bande de vibration ν4.|
|Number of pages||6|
|Journal||Journal of molecular spectroscopy|
|Publication status||Published - 15 Nov 2015|
- Infrared spectroscopy
FingerprintDive into the research topics of 'Infrared spectroscopy at high temperature : N<sub>2</sub>- and O<sub>2</sub>-broadening coefficients in the ν<sub>4</sub> band of CH<sub>4</sub>'. Together they form a unique fingerprint.
Muriel Lepere (Manager)Technological Platform Optics, Lasers and spectroscopy
Facility/equipment: Technological Platform
Paramètres collisionnels de raies d'absorption infrarouge d'hydrocarbures : des basses jusqu'aux hautes températures.Author: Fissiaux, L., 21 Feb 2013
Student thesis: Doc types › Doctor of Sciences