Experimental bandshapes of the v3 band of CH3F in helium: the role of interbranch and intrabranch line mixing

F. Thibault; J. Boissoles; I. M. Grigor'ev; N. N. Filippov; M. V. Tonkov

doi:10.1117/12.375388

25 January 2000 Experimental bandshapes of the ν₃ band of CH₃F in helium: the role of interbranch and intrabranch line mixing

F. Thibault, J. Boissoles, I. M. Grigor'ev, N. N. Filippov, M. V. Tonkov

Author Affiliations +

Proceedings Volume 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy; (2000) https://doi.org/10.1117/12.375388
Event: 13th Symposium and School on High-Resolution Molecular Spectroscopy, 1999, Tomsk, Russian Federation

Abstract

We measured a series of absorption profiles of the v₃ band of CH₃F perturbed by helium. The measurements were performed at room temperature for helium pressures from 1 to 90 atm. We observe significant deviations of measured profiles with respect to those calculated as a sum of lines having Lorentzian shapes. To interpret the observed deviations, we consider various models of line mixing. The calculations performed in the ECS approximation provide the most reasonable agreement with the measured band shapes reproducing the existing data on line broadening coefficients within the limits of experimental uncertainty. Special attention is paid to the analysis of the differences of interbranch and intrabranch line mixing, that is to the structure of relaxation matrix.

Citation Download Citation

F. Thibault, J. Boissoles, I. M. Grigor'ev, N. N. Filippov, and M. V. Tonkov "Experimental bandshapes of the ν₃ band of CH₃F in helium: the role of interbranch and intrabranch line mixing", Proc. SPIE 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy, (25 January 2000); https://doi.org/10.1117/12.375388

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available