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The 3ν1+ ν2Combination Band of HOCl: Assignments, Perturbations, and Line Intensities

✍ Scribed by Aleš Charvát; Sabine F. Deppe; Hilmar H. Hamann; Bernd Abel

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
331 KB
Volume
185
Category
Article
ISSN
0022-2852

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✦ Synopsis

The high-resolution spectra (0.012 cm 01 ) of the 3n 1 / n 2 combination band of hypochlorous acid HO 35(37) Cl in the near infrared (Ç11 478 cm 01 ) have been measured using a titanium:sapphire intracavity laser absorption (ICLA) spectrometer. Line assignments, absolute intensities, and the total band intensity for both isotopomers are reported. In the course of the band analysis two K a branches (K a Å 2,3) were found to be perturbed via low-order Fermi-type (anharmonic) resonances by a dark perturber which has been identified to be the 2n 1 / 2n 2 / 3n 3 state. The data are compared with intensity predictions from simple empirical models and discussed with regard to detection limits for this molecule in the near infrared spectral region of the atmosphere.

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