# ABSOLUTE LINE INTENSITIES FOR THE $\nu_{6}$ BAND OF $H_{2}O_{2}$

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 Title: ABSOLUTE LINE INTENSITIES FOR THE $\nu_{6}$ BAND OF $H_{2}O_{2}$ Creators: Klee, S.; Winnewisser, M.; Perrin, A.; Flaud, J.- M. Issue Date: 1998 Publisher: Ohio State University Abstract: The purpose of this work was to obtain reliable absolute intensities for the $\nu_{6}$ band of $H_{2}O_{2}$. This work was undertaken because strong discrepancies exist between the different $\nu_{6}$ band intensities which are presently available in the $literature^{a b}$. The method which was used in the present work is to use Fourier transform spectra of $H_{2}O_{2}$ recorded at Giessen in a spectral range $(370-1270cm^{-1})$ which covers both the R-branch of the torsion-rotation band at low wavenumber and the P-branch of the $\nu_{6}$ band at high wavenumber. $\bullet$ From the low wavenumber data, the partial pressure of $H_{2}O_{2}$ present in the cell during the recording of the spectra was determined by calibrating the observed absorptions in the torsion-rotation band with intensities computed *** by using the permanent $H_{2}O_{2}$ dipole moment measured by Stark $effect^{d}$. $\bullet$ In the high frequency range, this value of the partial pressure of $H_{2}O_{2}$ was used to measure absolute line intensities in the $\nu_{6}$ band. Finally, the line intensities in the $\nu_{6}$ band were fitted using the theoretical methods described in detail in our previous $works^{a,c}$. Description: $^{a}$ A. Perrin, A. Valentin, J.-M. Flaud, C. Camy-Peyret, L. Schriver, A. Schriver, and Ph. Areas, J. Mol. Spectrosc. 171, 358 (1995). $^{b}$ R. May, J. Quant, Radiat. Transfer. 45, 267 (1991). $^{c}$ A. Perrin, J.-M. Flaud, C. Camy-Peyret, R. Schermaul, M. Winnewisser, J.Y. M***ndin, V. Dana, M. Badaoui, and J. Kopu***, J. Mol. Spectrosc, 176, 287 (1996). $^{d}$ E.A. Cohen, and H.M. Pickett, J. Mol. Spectrosc. 87, 582 (1981). Author Institution: Justus Liebig Universit\""{a}t, Physikalisch-Chemisches Institut Heinrich-Buff-Ring 58; Laboratoire De Photophysique Mol\'{E}Culaire, Cnrs, Universit\'{E} Paris Sud URI: http://hdl.handle.net/1811/19140 Other Identifiers: 1998-WF-08