Abstract book - Prof. Per Jensen, Ph.D. - Bergische Universität ...

196 Poster session, J33Water vapor line self-broadening study in 13400-14000 см -1 rangeA.S. Dudaryonok, N.N. Lavrentieva, L.N. Sinitsa 1 , V.I. Serdyukov,S.S. Vasilchenko1 Zuev Institute of Atmospheric Optics, Russia, sln@asd.iao.ruSelf-broadening coefficients of the Н 2 16 О lines in the range of 13400-14000 cm -1 weredetermined using Fourier transform spectrometer FTS-125M with spectral resolution of0.04 cm -1 . White type multipass absorption cell with an absorption path of 10 m wasused at elevated temperature to achieve high pressure of water vapor. Absorptionspectra were registered at temperature of T = 324,5 К and pressure of 5, 7, 14, 27 и 48mbar.Calculations of self-broadening coefficients of vibration-rotation lines of watermolecules are performed using semi-empirical method. The method is based on theimpact theory of broadening, and includes the correction factors whose parameters canbe determined by fitting the broadening or shifting coefficients to the experimental data.The calculations are made using complete set of high accuracy vibration-rotation dipoletransition moments calculated for all possible transitions using wave functionsdetermined from variational nuclear motion calculations and an ab initio dipole momentsurface. This approach takes into account the contributions of all scattering channels,induced by collisions of molecules. The calculated results well agree with experimentaldata.Dudaryonok A.S.Lavrentieva N.N.Sinitsa L.N.Serdyukov V.I.Vasilchenko S.S.The work is partly supported by grants of RFBR , Program of RAS 3.9.6, Grant ofMinistry of Education and Science of the Russian Federation №11.519.11.5009.