Research output: Contribution to journal › Conference article › peer-review
Analysis of experimental bandshapes of the ν3 band of CH3F in helium : The role of interbranch and intrabranch line mixing. / Thibault, F.; Boissoles, J.; Grigoriev, I. M.; Filippov, N. N.; Tonkov, M. V.
In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4063, 01.01.2000, p. 239-243.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - Analysis of experimental bandshapes of the ν3 band of CH3F in helium
T2 - 13th Symposium and School on High-Resolution Molecular Spectroscopy
AU - Thibault, F.
AU - Boissoles, J.
AU - Grigoriev, I. M.
AU - Filippov, N. N.
AU - Tonkov, M. V.
PY - 2000/1/1
Y1 - 2000/1/1
N2 - We measured a series of absorption profiles of the ν3 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.
AB - We measured a series of absorption profiles of the ν3 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.
UR - http://www.scopus.com/inward/record.url?scp=0033875751&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0033875751
VL - 4063
SP - 239
EP - 243
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
Y2 - 4 July 1999 through 6 July 1999
ER -
ID: 35918070