OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/38289

Show full item record

Files Size Format View
abstract.gif 27.10Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
CH4-SOLEIL.ppt 6.236Mb Microsoft PowerPoint View/Open
Slide1.GIF 163.1Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide2.GIF 163.2Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide3.GIF 158.1Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide4.GIF 166.2Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide5.GIF 166.2Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide6.GIF 167.9Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide7.GIF 176.0Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide8.GIF 164.8Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide9.GIF 206.7Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide10.GIF 215.5Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide11.GIF 201.3Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide12.GIF 167.7Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide13.GIF 168.5Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide14.GIF 165.9Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide15.GIF 158.1Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide16.GIF 161.7Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide17.GIF 166.9Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide18.GIF 169.8Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide19.GIF 179.1Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide20.GIF 162.3Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide21.GIF 162.6Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide22.GIF 165.1Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Slide23.GIF 183.2Kb GIF image Thumbnail of THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON

Title: THE HIGH RESOLUTION FAR-INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON
Creators: Boudon, V.; Pirali, O.; Roy, P.; Manceron, L.; Vander Auwera, J.
Issue Date: 2009
Publisher: Ohio State University
Abstract: As a tetrahedral molecule, methane has no permanent dipole moment. The spectrum of this molecule, however, displays faint absorption lines in the THz region, due to centrifugal distorsion effects. This is important for planetary applications since this region is used to measure methane concentration in some planetary atmospheres, in particular in the case of Titan, {\em Icarus\/} {\bf 189}, 35--62 (2007).}. Up to now, all measurements were relying on some old low resolution spectra, {\bf 110}, 95--105 (1985).}. Even if these results have been reexamined recently {\bf 103}, 102--117 (2007).}, it seemed highly desirable to obtain much more precise laboratory data. The high-intensity synchrotron radiation, combined with a 150 m optical path in a White cell and a Bruker IFS 125 HR FTIR spectrometer at the AILES beamline of SOLEIL, enabled us to record this very weak spectrum at high resolution for the first time. Spectra were recorded at 9.91, 20, 50 and 100 mbar pressure with a resolution of 0.0011, 0.002, 0.005 and 0.01 cm$^{-1}$, respectively. The rotational clusters are fully resolved and the good signal-to-noise ratio should enable precise measurement of transition intensities, yielding an accurate determination of the dipole moment derivative. Such results should allow a better determination of CH$_4$ concentration in planetary objects.
URI: http://hdl.handle.net/1811/38289
Other Identifiers: 2009-TC-02
Bookmark and Share