TY - JOUR

T1 - Line-mixing effects in the 3 nu(3) band of CO2 perturbed by Ar

AU - Filippov, NN

AU - Bouanich, JP

AU - Hartmann, JM

AU - Ozanne, L

AU - Boulet, C

AU - Tonkov, MV

AU - Thibault, F

AU - LeDoucen, R

PY - 1996/3

Y1 - 1996/3

N2 - Measurements of absorption coefficients in the 3v(3) band of CO2 at 1.44 mu m perturbed by Ar up to 146 bar have been analyzed by using two line-mixing theoretical calculations within the impact approximation. In the first approach, the relaxation operator is treated semi-classically with adiabatic corrections. In the second, the relaxation operator is modelled with the Energy Corrected Sudden (ECS) approximation associated with a power fitting law providing the basic rotational state-to-state rates. Although the line-coupling spectroscopic cross-sections of the two models are significantly different, they both lead to satisfactory agreement with bandshapes at moderate densities (

AB - Measurements of absorption coefficients in the 3v(3) band of CO2 at 1.44 mu m perturbed by Ar up to 146 bar have been analyzed by using two line-mixing theoretical calculations within the impact approximation. In the first approach, the relaxation operator is treated semi-classically with adiabatic corrections. In the second, the relaxation operator is modelled with the Energy Corrected Sudden (ECS) approximation associated with a power fitting law providing the basic rotational state-to-state rates. Although the line-coupling spectroscopic cross-sections of the two models are significantly different, they both lead to satisfactory agreement with bandshapes at moderate densities (

KW - TUNABLE-DIODE-LASER

KW - THEORETICAL-ANALYSIS

KW - CROSS-SECTIONS

KW - ABSORPTION

KW - RELAXATION

KW - DEPENDENCE

U2 - 10.1016/0022-4073(95)00170-0

DO - 10.1016/0022-4073(95)00170-0

M3 - статья

VL - 55

SP - 307

EP - 320

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

SN - 0022-4073

IS - 3

ER -