Methane spectral line widths and shifts, and dependences on physical parameters

Details Methane spectral line widths and shifts, and dependences on physical parameters Methane spectral line widths and shifts, and dependences on physical parameters

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9617483f&link_type=abstract

(International Conference on Laboratory Research for Planetary Atmospheres, 2nd, Charlottesville, VA, Oct. 21, 1990, Proceedings

Astronomy and Astrophysics

Astronomy

5

Gas Giant Planets, Infrared Spectra, Methane, Planetary Atmospheres, Rare Gases, Spectral Line Width, Astronomical Spectroscopy, Atmospheric Composition, Rotational Spectra, Vibrational Spectra

Scientific paper

A detailed report of the recent high-resolution spectroscopic research on widths and shifts measured for a strong infrared-active fundamental of methane is presented. They were measured in collision with several rare gases and diatomic molecules, in the vibrational-rotational fundamental near 3000/cm. These measurements were made at an ambient temperature of 294 K over a range of pressures from 100 to 700 torr. The measurements are discussed in a preliminary but detailed and quantitative manner with reference to masses, polarizabilities, and quadrupole moments. Some functional dependences on these physical parameters are considered. The present data are useful for studies of corresponding planetary spectra.

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