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Diode-Laser Measurements of O2-Broadening Coefficients in the ν3Band of CH3D

✍ Scribed by Kathy Jacquiez; Ghislain Blanquet; Jacques Walrand; Jean-Pierre Bouanich

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
144 KB
Volume
175
Category
Article
ISSN
0022-2852

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✦ Synopsis

O 2 -broadening coefficients have been measured for 29 lines of 12 CH 3 D in the Q P and Q R branches of the n 3 band, using a tunable diode-laser spectrometer. The collisional widths obtained by fitting Rautian profiles to the measured shapes of the lines are significantly larger than those derived from Voigt profiles. A comparison is made with results calculated from a semiclassical impact theory of collisional broadening. In addition to the weak electrostatic contributions of the intermolecular potential, we have considered a simple formalism for the other anisotropic interactions.

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