Temperature, pressure, and perturber dependencies of line-mixing effects in CO2 infrared spectra. III. Second order rotational angular momentum relaxation and Coriolis effects in Π←Σ bands
作者： J.-M. Hartmann , R. Rodrigues , Nguyen-Van-Thanh , C. Brodbeck , C. Boulet
DOI: 10.1063/1.478723
关键词: Infrared 、 Atomic physics 、 Rotational transition 、 Line (formation) 、 Absorption (electromagnetic radiation) 、 Atmospheric temperature range 、 Angular momentum 、 Rayleigh scattering 、 Relaxation (physics) 、 Chemistry
摘要: The energy corrected sudden approach is used in order to deduce collisional parameters and model infrared quantities Π←Σ bands of CO2–He CO2–Ar mixtures the 200–300 K temperature range. Measured line-broadening coefficients absorption Q-branch ν2 band at moderate pressure are first for determination (from a fit) time constant associated with relaxation second traceless tensor rotational angular momentum (all other have been determined previously). results obtained consistent previous (calculated) dependent values depolarized Rayleigh cross sections. then successfully tested through computations (ν1+ν2)I elevated densities. Analysis line-mixing effects made, including study influence interbranch transfers Coriolis coupling. Differences between collisions He Ar pointed out explained.
scitation.org
aip.org
sci-hub.se 参考文章(23)
R. Rodrigues, C. Boulet, L. Bonamy, J. M. Hartmann, Temperature, pressure, and perturber dependencies of line-mixing effects in CO2 infrared spectra. II. Rotational angular momentum relaxation and spectral shift in Σ←Σ bands Journal of Chemical Physics. ,vol. 109, pp. 3037- 3047 ,(1998) , 10.1063/1.476921
F. Thibault, J. Boissoles, C. Boulet, L. Ozanne, J. P. Bouanich, C. F. Roche, J. M. Hutson, Energy corrected sudden calculations of linewidths and line shapes based on coupled states cross sections: The test case of CO2–argon Journal of Chemical Physics. ,vol. 109, pp. 6338- 6345 ,(1998) , 10.1063/1.477187
L. Ozanne, Nguyen‐Van‐Thanh, C. Brodbeck, J. P. Bouanich, J. M. Hartmann, C. Boulet, Line mixing and nonlinear density effects in the ν3 and 3ν3 infrared bands of CO2 perturbed by He up to 1000 bar Journal of Chemical Physics. ,vol. 102, pp. 7306- 7316 ,(1995) , 10.1063/1.469042
R. Rodrigues, B. Khalil, R. Le Doucen, L. Bonamy, J.-M. Hartmann, Temperature, pressure, and perturber dependencies of line-mixing effects in CO2 infrared spectra. I. Σ←Π Q branches Journal of Chemical Physics. ,vol. 107, pp. 4118- 4132 ,(1997) , 10.1063/1.474789
B. Lavorel, G. Fanjoux, G. Millot, L. Bonamy, F. Emond, Line coupling effects in anisotropic Raman Q branches of the ν1/2ν2 Fermi dyad in CO2 Journal of Chemical Physics. ,vol. 103, pp. 9903- 9906 ,(1995) , 10.1063/1.469879
L. Ozanne, J.M. Hartmann, J.P. Bouanich, C. Boulet, Collisional narrowing of gas phase infrared bands of CO2 at high density Chemical Physics Letters. ,vol. 261, pp. 353- 356 ,(1996) , 10.1016/0009-2614(96)00966-9
J.M. Hartmann, Calculation of self-broadening coefficients for H2O Raman lines Journal of Molecular Spectroscopy. ,vol. 127, pp. 35- 43 ,(1988) , 10.1016/0022-2852(88)90005-7
L. Bonamy, J. Bonamy, D. Robert, S. I. Temkin, G. Millot, B. Lavorel, Line coupling in anisotropic Raman branches Journal of Chemical Physics. ,vol. 101, pp. 7350- 7356 ,(1994) , 10.1063/1.468293
J. Boissoles, F. Thibault, R. Le Doucen, V. Menoux, C. Boulet, Line mixing effects in the 0003–0000 band of CO2 in helium. III. Energy corrected sudden simultaneous fit of linewidths and near wing profile Journal of Chemical Physics. ,vol. 101, pp. 6552- 6558 ,(1994) , 10.1063/1.468348
L. Ozanne, Q. Ma, Nguyen-Van-Thanh, C. Brodbeck, J.P. Bouanich, J.M. Hartmann, C. Boulet, R.H. Tipping, Line-mixing, finite duration of collision, vibrational shift, and non-linear density effects in the ν3 and 3ν3 bands of CO2 perturbed by Ar up to 1000 bar Journal of Quantitative Spectroscopy & Radiative Transfer. ,vol. 58, pp. 261- 277 ,(1997) , 10.1016/S0022-4073(97)00007-1