TY - JOUR
T1 - Line-mixing effects in Ar-broadened l-doublets of a hot band of OCS
AU - Blanquet, G.
AU - Walrand, J.
AU - Bouanich, J.-P.
AU - Boulet, C.
N1 - Copyright 2007 Elsevier B.V., All rights reserved.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - The spectra of several Ar-broadened symmetric doublets in the hot band ν + ν - ν (at 850 cm) of OC S have been recorded with a tunable diode-laser spectrometer. The pressure-broadening coefficients measured for sufficiently separated lines belonging to 7 doublets are in agreement with the results previously obtained in the ν band. From these data, we have determined, for different pressures of argon, line-coupling coefficients for 15 doublets in the P and R branches of the hot band. These coefficients appear to be small and negative, at the limit of our estimated accuracy, which implies very weak line-mixing effects in the doublets, in agreement with the results of a semiclassical calculation as well as with results of coupling cross sections estimated at large-j values from the infinite order sudden (IOS) approximation.
AB - The spectra of several Ar-broadened symmetric doublets in the hot band ν + ν - ν (at 850 cm) of OC S have been recorded with a tunable diode-laser spectrometer. The pressure-broadening coefficients measured for sufficiently separated lines belonging to 7 doublets are in agreement with the results previously obtained in the ν band. From these data, we have determined, for different pressures of argon, line-coupling coefficients for 15 doublets in the P and R branches of the hot band. These coefficients appear to be small and negative, at the limit of our estimated accuracy, which implies very weak line-mixing effects in the doublets, in agreement with the results of a semiclassical calculation as well as with results of coupling cross sections estimated at large-j values from the infinite order sudden (IOS) approximation.
UR - http://www.scopus.com/inward/record.url?scp=0040096334&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0040096334
SN - 0021-9606
VL - 93
SP - 6962
EP - 6970
JO - The Journal of chemical physics
JF - The Journal of chemical physics
IS - 10
ER -