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Rotational Spectrum of HNO3in the ν5and 2ν9Vibrational States

✍ Scribed by Thomas M. Goyette; Lee C. Oesterling; Douglas T. Petkie; Randy A. Booker; Paul Helminger; Frank C. De Lucia

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
815 KB
Volume
175
Category
Article
ISSN
0022-2852

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✦ Synopsis

The millimeter/submillimeter transitions of the n 5 -2n 9 interacting bands of HNO 3 have been measured in the symmetric top limit. Torsional splittings in both vibrational bands have been observed. The 2n 9 splitting is due to the torsional motion of H around the NO whereas the n 5 splitting is due to the large mixing with 2n 9 . An analysis is presented in which a Fermi interaction, 2 sets of 2n 9 rotational constants, and one set of n 5 rotational constants are used to account for all of the perturbation and torsional splitting observed in the spectrum. The 860 lines used in this analysis are fit to 91 kHz.

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