dc.creator Perrin, A. en_US dc.creator Flaud, J.- M. en_US dc.creator Goldman, A. en_US dc.creator Blatherwick, R. D. en_US dc.creator Murcray, F. J. en_US dc.creator Rinsland, C. P. en_US dc.date.accessioned 2006-06-15T19:00:09Z dc.date.available 2006-06-15T19:00:09Z dc.date.issued 1998 en_US dc.identifier 1998-MF-02 en_US dc.identifier.uri http://hdl.handle.net/1811/18794 dc.description $^{a}$A. Maki, J. Mol. Spectrosc. 136, 105 (1989). $^{b}$W.F. Wang, P.P. Ong, E.C. Looi and H.H. Teo, J. Mol. Spectrosc. 183, 407 (1997). $^{c}$T.M. Goyette and F.C. De Lucia. J. Mol. Spectrosc. 139, 241 (1990). en_US dc.description Author Institution: Laboratoire de Photophysique Mol\'{e}culaire, CNRS, Universit\'{e} Paris Sud; University of Denver, Physics Department; Atmospheric Science Division, NASA Langley Research Center en_US dc.description.abstract Using new Fourier transform spectra recorded at high resolution at Denver, in the $1100-1300cm^{-1}$ spectral range, it has been possible to perform a new and more extended study of the $\nu_{8}+\nu_{9}$ band of $HNO_{3}.{^{a b}}$ Actually, more than 4400 lines belonging to the $v_{8}+v_{9}$ band could be assigned up to high J and $K_{a}$ values ($J\leq75$ and $K_{a}\leq45$), leading to the determination of 1700 infrared energy levels of the $v_{8}=v_{9}=1$ state. As in the recent infrared analysis of the $v_{8}+v_{9}$ band performed by $Wang^{b}$ the Fermi-type resonance coupling the rotational levels of the $v_{8}=v_{9}=1$ vibrational state with those of the $v_{6}=v_{7}=1$ ""dark state"" was explicitly taken into account during the energy levels calculations. This allowed to reproduce the infrared levels to within their experimental accuracy. However, it should be pointed out that when dealing with the microwave $measurements^{c}$ within $\nu_{8}+\nu_{9}$, some microwave lines could not be calculated properly. Finally the determination of the A- and B-type components of the transition moment operator of the $\nu_{8}+\nu_{9}$ band was performed from a least squares fit calculation performed on experimental line intensities measured in the spectrum. en_US dc.format.extent 137515 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title NEW HIGH RESOLUTION ANALYSIS OF THE $\nu_{8}+\nu_{9}$ BAND OF $H^{14}NO_{3}$ BY FOURIER TRANSFORM SPECTROSCOPY en_US dc.type article en_US
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