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Aerogels Brillouin scattering

In the very high frequency range, Brillouin scattering may be used to measure the sound velocities of aerogels [53]. [Pg.321]

Above about 0.5 GHz, Brillouin scattering provides an elegant technique of measuring phonon mean free paths (which are inversely proportional to the sound attenuation coefficient) by evaluating the width of the Brillouin lines [53]. However, as a result of finite spectrometer resolution and contrast, this method is limited to aerogel densities above 180 kg/m. ... [Pg.322]

Calas S, Levelut C, Woignier T et al (1998) Brillouin scattering study of sintered and compressed aerogels. Journal of Non-Crystalline Solids 225 244-247... [Pg.496]

Levelut C., Anglaret E., Pelous J. Brillouin scattering of aerogels densified under uniaxial pressure. J. Non-Cryst. Solids 1998 225 272-276... [Pg.799]

Figure 5-2. Brillouin spectrafor a sUica aerogel with p = 186 atfour internal scattering... Figure 5-2. Brillouin spectrafor a sUica aerogel with p = 186 atfour internal scattering...
See other pages where Aerogels Brillouin scattering is mentioned: [Pg.324]    [Pg.469]    [Pg.469]    [Pg.780]    [Pg.782]    [Pg.782]    [Pg.785]    [Pg.798]    [Pg.778]    [Pg.784]    [Pg.335]   
See also in sourсe #XX -- [ Pg.321 ]



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