Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Attenuation coefficient, phonon

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]

Fig. 8. Sound velocity V (right scale) and phonon line width F (left scale) of poly( ytene oxide) versus temperature. The phonon line width is proportional to the sound attenuation coefficient. Fig. 8. Sound velocity V (right scale) and phonon line width F (left scale) of poly( ytene oxide) versus temperature. The phonon line width is proportional to the sound attenuation coefficient.
See other pages where Attenuation coefficient, phonon is mentioned: [Pg.519]    [Pg.142]    [Pg.123]    [Pg.123]    [Pg.126]    [Pg.128]    [Pg.232]    [Pg.560]    [Pg.400]    [Pg.287]    [Pg.445]   
See also in sourсe #XX -- [ Pg.142 ]



SEARCH



Phonon attenuation

Phonon coefficient

© 2024 chempedia.info