Spectral shifts of methane lines in collisions with hydrogen, helium, nitrogen, and argon

Details Spectral shifts of methane lines in collisions with hydrogen, helium, nitrogen, and argon Spectral shifts of methane lines in collisions with hydrogen, helium, nitrogen, and argon

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jqsrt..42..201f&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 42, Sept. 1989, p. 201-206.

Physics

14

Atmospheric Radiation, Line Spectra, Methane, Molecular Spectra, Rotational Spectra, Scattering Cross Sections, Argon, Helium, Hydrogen, Nitrogen, Vibrational Spectra

Scientific paper

Pressure-induced shifts of rotational-vibrational lines in CH4 have been measured at very high spectral resolution in the R-branch of the 3nu(3) overtone. The colliding gases were H2, He, N2, and Ar. Results are presented as functions of rotational and tetrahedral quantum numbers. Mean values (in 0.001/cm per torr) for the R0-R6 multiplets are -0.01109 (CH4-H2), +0.00547 (opposite sense) (CH4-He), -0.01990 (CH4-N2), and -0.02126 (CH4-Ar).

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