Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Kinetic theory of band shapes in molecular spectra of gases : Application to band wings. / Filippov, NN; Tonkov, MV.
в: Journal of Chemical Physics, Том 108, № 9, 01.03.1998, стр. 3608-3619.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Kinetic theory of band shapes in molecular spectra of gases
T2 - Application to band wings
AU - Filippov, NN
AU - Tonkov, MV
PY - 1998/3/1
Y1 - 1998/3/1
N2 - A kinetic theory of spectral band shapes is developed which accounts for the effects of line mixing and finite duration of collisions. The theory is based on a projection operator technique with a nonorthogonal metric. The roles and hierarchy of various approximations commonly employed are analyzed. It is shown that the relaxation operator must be defined before the initial correlations are suppressed so that the double sum rule for the matrix elements of this operator is conserved. This conservation is important for the calculations of the wings of band shapes. Rotovibrational band shapes for some specific cases of Raman and infrared absorption spectra of gases are considered. The expressions obtained relate the band wing profiles with the spectral density of molecular torque arising from binary collisions. (C) 1998 American Institute of Physics.
AB - A kinetic theory of spectral band shapes is developed which accounts for the effects of line mixing and finite duration of collisions. The theory is based on a projection operator technique with a nonorthogonal metric. The roles and hierarchy of various approximations commonly employed are analyzed. It is shown that the relaxation operator must be defined before the initial correlations are suppressed so that the double sum rule for the matrix elements of this operator is conserved. This conservation is important for the calculations of the wings of band shapes. Rotovibrational band shapes for some specific cases of Raman and infrared absorption spectra of gases are considered. The expressions obtained relate the band wing profiles with the spectral density of molecular torque arising from binary collisions. (C) 1998 American Institute of Physics.
KW - NEGATIVE VELOCITY CORRELATION
KW - INFRARED-ABSORPTION SPECTRA
KW - HARD-SPHERE FLUID
KW - STATISTICAL-THEORY
KW - WATER CONTINUUM
KW - FAR WINGS
KW - CO2
KW - INTERFERENCE
KW - RELAXATION
KW - SCATTERING
U2 - 10.1063/1.475755
DO - 10.1063/1.475755
M3 - статья
VL - 108
SP - 3608
EP - 3619
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 9
ER -
ID: 41410337