SLIT-JET FOURIER-TRANSFORM INFRARED-SPECTROSCOPY IN (C2H4)-C-12 - COLD AND HOT BANDS NEAR 3000 CM(-1)

A Fourier transform interferometer was used to record the slit-jet abs orption spectrum of (C2H4)-C-12 between 2500 and 3500 cm(-1) at a spec tral resolution of 0.02 cm(-1). The rotational analysis of the nu(9) a nd nu(11) fundamental and nu(2) + nu(12) combination bands is performe d, effective rotational parameters are presented, and relative absorpt ion intensities are measured. In addition, a few lines of the 2 nu(10) + nu(12) band are assigned. The selective sampling of vibrational hot bands in the jet is demonstrated using another experimental apparatus , with a heated slit. (C) 1998 Published by Elsevier Science B.V. All rights reserved.