Other
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jqsrt..60..501b&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 60, issue 4, pp. 501-514
Other
8
Methane: Line Intensities, Methane: Line Broadening, Methane: Infrared Spectra, Methane: Planetary Atmospheres, Methane: Laboratory Spectra
Scientific paper
The 3ν2 band of CH3D has been used to measure the D/H ratio in the giant planets. However, agreement among measurements derived from this and other bands is not yet completely satisfactory. A more complete and more accurate set of spectroscopic parameters for this band would provide better constraints on planetary formation and evolution. Towards this goal, the authors have measured intensities and self-broadening coefficients for 221 lines of the 3ν2 band of 12CH3D at 6425 cm-1, as well as for 34 assigned lines belonging to a second intermixed band, using laboratory spectra recorded at Kitt Peak National Observatory. From the measured lines it has been possible to estimate the square of the vibrational dipole moment matrix element as equal to (8.8±0.8)×10-7 Debye2 and the intensity of the 3ν2 band at 293.5 K as equal to (2.34±0.19)×10-21 cm-1/(molecule cm-2).
Boussin C.
de Bergh Catherine
Hamdouni Aziz
Lutz Barry L.
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