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Line intensities of 12C2H2 in the 1.3, 1.2, and 1 μm spectral regions

✍ Scribed by D. Jacquemart; N. Lacome; J.-Y. Mandin

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
232 KB
Volume
110
Category
Article
ISSN
0022-4073

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✦ Synopsis

Intensities of about 320 lines of the 12 C 2 H 2 molecule, belonging to 7 parallel bands, are measured in the 1.3, 1.2, and 1 mm spectral regions, with a mean accuracy around 3% or 7% depending on the spectral region. Vibrational transition dipole moment squared values and Herman-Wallis coefficients are obtained for each band, in order to model the rotational dependence of the transition dipole moment squared, except for the n 1 +n 3 +2n 4 0 band at 7732.78 cm À1 that exhibits an unusual rotational dependence because of a strong '-type resonance. HITRAN format line lists are set up for applications.

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Using FT spectra (Bruker IFS 120, unapodized FWHM resolution E 0.001 cm À1 ) of acetylene 12 C 2 H 2 , absolute positions and intensities have been measured for about 250 lines between 2600 and 2800 cm À1 in the n 2 þ n 1 5 and ð3n 4 þ n 5 Þ 0 þ cold bands, and in the n 1 À n 1 5 ; n 3 À n 1 4 ; and