Absolute line intensities determination in the ν7 band of C2H4

Absolute intensities have been measured for 26 lines of C2H4 in the v(7) fundamental transition, using a tunable diode-laser spectrometer. These lines with 3 less than or equal to J" less than or equal to 21, 2 less than or equal to K-a less than or equal to 4, 2 less than or equal to K-c less than or equal to 20 are located in the spectral range 920-980 cm(-1). The intensities have been measured by using two methods: the equivalent width method (EWM) and the line profile fit method (FPM). For the last one, three models have been tested: Voigt, Rautian and Galatry profiles. (C) 2002 Elsevier Science B.V. All rights reserved.