ABSOLUTE LINE INTENSITIES IN $^{12}C_{2}H_{2}$: THE $1.5\mu$ REGION
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Date
2002
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Ohio State University
Abstract
In the line of our activities aiming at providing reference spectroscopic information in the near infrared range, we measured absolute line intensities in 5 bands of acetylene observed around $1.5 \mu$: the $\nu_{1} + \nu_{3}$ band and 3 hot bands involving excitation of the bending modes $\nu_{4}$ and $\nu_{5}$ of $^{12}C_{2}H_{2}$ and the $\nu_{1} + \nu_{5}$ band of $^{13}C^{12}CH_{2}$. These measurements were performed on spectra recorded at a resolution of $0.009 cm^{-1}$ (Maximum Optical Path Difference = 100 cm) using a Bruker IFS120HR Fourier transform spectrometer. Five spectra were actually recorded at room temperature, with sample pressure - absorption path length products ranging from 0.67 to 2700 mbarxm. Results will be presented and discussed.
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Author Institution: Laboratoire de Chimie Physique Mol\'{e}culaire C. P. 160/09, Universit\'{e} Libre de Bruxelles