Subdoppler Study of the nu7 Band of C2H4 with a CO2 Laser Sideband Spectrometer
The saturation spectrum of ethylene has been studied between 900 and 1100 cm-1 with the sub-Doppler sideband spectrometer of Lille. Two hundred absorption lines have been recorded with an absolute accuracy of approximately 15 kHz. On the basis of these accurate data, a new global analysis of the GS and of the nu7, nu10, and nu4 upper states was achieved taking into account the Coriolis interactions up to the third order. A statistical agreement is obtained with all experimental data with an estimated standard deviation equal to 0.825. The spectra of ethylene between 900 and 1100 cm-1 become very good wavenumber standards with an absolute accuracy of 10(-6) cm-1. Copyright 1998 Academic Press.
Rusinek
E
Centre d'Etudes et Recherches Lasers et Applications, Université des Sciences et Technologies de Lille, Cedex, F 59655 Villeneuve d'Ascq, France
Fichoux
H
Khelkhal
M
Herlemont
F
Legrand
J
Fayt
A