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Atmospheric and Oceanic Optics

2020 year, number 5

The broadening of Н2О, СО, and СО2 spectral lines confined in aerogel and xerogel nanoporous

V.I. Starikov
Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Keywords: водяной пар, окись углерода, углекислый газ, уширение спектральных линий, аэрогель, ксерогель, нанопоры, water vapor, carbon oxide, carbon dioxide, half-width of spectral lines, aerogel, xerogel, nanoporous


The calculation results of the broadening of absorption lines of Н2О, СО, and СО2 confined in long cylindrical and spherical porous xerogel and aerogel 20 to 90 nm diameter at a room temperature and pressures from 1 and 50 mlb are presented. The collisions of free Н2О, СО, and СО2 molecules with walls and with physically adsorbed on the surface molecules are discussed. The surface density of the adsorbed centers in porous silica aerogel is estimated. The comparison with the aviable experimental data is discussed.