Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Estimation of line parameters under line mixing effects : The v3 band of CH4 in helium. / Grigoriev, I. M.; Filippov, N. N.; Tonkov, M. V.; Gabard, T.; Le Doucen, R.
в: Journal of Quantitative Spectroscopy and Radiative Transfer, Том 69, № 2, 15.02.2001, стр. 189-204.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Estimation of line parameters under line mixing effects
T2 - The v3 band of CH4 in helium
AU - Grigoriev, I. M.
AU - Filippov, N. N.
AU - Tonkov, M. V.
AU - Gabard, T.
AU - Le Doucen, R.
PY - 2001/2/15
Y1 - 2001/2/15
N2 - Spectra of CH4-He mixtures were measured in the P and R branch regions of v3 vibration-rotation band at lower pressures of 0.26-1.0 bar and for the whole band at higher pressures up to 90 bar. The line broadening coefficients were found from lower pressure data for the lines of the P branch. These coefficients were calculated in the framework of the Robert and Bonamy semi-classical approach. In general, they agree with the experimental ones, but a small J-dependent deviation was observed. Line mixing effects were observed at all pressures. At higher pressures they were interpreted in terms of the adjusted branch-coupling model. At lower pressures line mixing effects were found to be especially pronounced in the region of the relatively weak lines forming the clusters from R(16) to R(19).
AB - Spectra of CH4-He mixtures were measured in the P and R branch regions of v3 vibration-rotation band at lower pressures of 0.26-1.0 bar and for the whole band at higher pressures up to 90 bar. The line broadening coefficients were found from lower pressure data for the lines of the P branch. These coefficients were calculated in the framework of the Robert and Bonamy semi-classical approach. In general, they agree with the experimental ones, but a small J-dependent deviation was observed. Line mixing effects were observed at all pressures. At higher pressures they were interpreted in terms of the adjusted branch-coupling model. At lower pressures line mixing effects were found to be especially pronounced in the region of the relatively weak lines forming the clusters from R(16) to R(19).
KW - Infrared gas spectra
KW - Line broadening
KW - Line mixing effect
KW - Line shifting
UR - http://www.scopus.com/inward/record.url?scp=0035864653&partnerID=8YFLogxK
U2 - 10.1016/S0022-4073(00)00076-5
DO - 10.1016/S0022-4073(00)00076-5
M3 - Article
AN - SCOPUS:0035864653
VL - 69
SP - 189
EP - 204
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
IS - 2
ER -
ID: 35917359