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

Poster session, J32 195Study of D 2 O absorption spectrum in Silica AerogelN.N. Lavrentieva, A. A. Lugovskoy, L.N.Sinitsa 1 , A.Sukhov1 V.E. Zuev Institute of Atmospheric Optics, Russia, sln@asd.iao.ruThe absorption spectra of D 2 O in 3600-4800 cm -1 were recorded in gas phase and innanoscale pores 50 nm wide in the silica aerogel using IFS-125M Fourier Transformspectrometer IFS-125M with spectral resolution of 0.01…0.03 cm -1 . Absorption cellwith an absorption path of 2.5 cm was used to study the absorption spectra at roomtemperature and pressure of 15 and 30 mbar.Self-broadening coefficients of the D 2 16 О lines were determined from the experimentand calculations of self-broadening coefficients of vibration-rotation lines of watermolecules were performed using semi-empirical method. The calculated results wellagree with experimental data.The cell was completely filled with gel. Apparatus function of the spectrometer wasmonitored during the experiment.D 2 O vapor spectra were studied simultaneously with the D 2 O thin layer increasingwhich was measured by bulk water spectrum in 4400-5400 cm -1 region. Mode structureof bulk D 2 O band was studied with temperature variation.It was found that D 2 O line halfwidths in the gel slightly exceed those of pure vaporwhich is in agreement with the work [1].Lavrentieva N.N.Lugovskoy A.A.Sinitsa L.N.Sukhov A.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.References[1] T. Svensson, M. Lewander, S. Svanberg Optics Letters 18, 16460, 2010