F. Frichot et al., PRESSURE AND TEMPERATURE DEPENDENCES OF ABSORPTION IN THE NU(5) (R)Q(O) BRANCH OF CH3CL IN N-2 - MEASUREMENTS AND MODELING, Journal of molecular spectroscopy, 178(1), 1996, pp. 52-58
Citations number
9
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
The semiempirical approach developed in a previous paper is applied to
the nu(5) (R)Q(0) branch of CH3CI perturbed by N-2. New experiments h
ave been performed using a Fourier transform spectrometer with a resol
ution of 0.016 cm(-1). Absorption has been measured for total pressure
s and temperatures in the ranges 0.3-1.1 atm and 197-298 K, respective
ly. It is shown that our model enables satisfactory prediction of pres
sure and temperature, as well as wavenumber dependences of absorption,
with 11 effective parameters which have been deduced from measured sp
ectra. Analysis shows that the influence of line mixing on the absorpt
ion shape is important down to total pressures of about 30 mbar and sh
ould thus be accounted for in the treatment of atmospheric spectra. (C
) 1996 Academic Press, Inc.