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- W2024074003 abstract "The low-frequency Raman spectra and the Rayleigh-Brillouin spectra of the crystalline electrolyte, rubidium silver iodide have been measured. At 90ifmmode^circelsetextdegreefi{}C the longitudinal-acoustical phonon was observed by Brillouin scattering with a triply-passed Fabry-Perot interferometer to have a frequency consistent with known and measured physical properties of the crystal. The absolute intensity was compared with that of fused silica, yielding a value for the Rayleigh ratio of 2 ifmmodetimeselsetexttimesfi{} ${10}^{ensuremath{-}6}$ ${mathrm{cm}}^{ensuremath{-}1}$ and for the Pockels' coefficient of 0.15. The Brillouin linewidth was instrumental and less than 0.3 GHz. The Rayleigh-Brillouin spectra were dominated by an intense Rayleigh peak of width less than 10 MHz and Rayleigh ratio of 0.14 ${mathrm{cm}}^{ensuremath{-}1}$. Removal of this feature with an iodine filter revealed a dynamic central peak wider than the 350-MHz half-width of the filter. Analysis and comparison between data from an interferometer and a double monochromator lead to the conclusion that the central peak may be described as a sum of two Lorentzians. The narrower peak has a half-width of roughly 9ifmmodepmelsetextpmfi{}3 GHz and a Rayleigh ratio of 4 ifmmodetimeselsetexttimesfi{} ${10}^{ensuremath{-}6}$ ${mathrm{cm}}^{ensuremath{-}1}$. Its width is consistent with a relaxation rate estimated from the diffusivity. The broader peak has a half-width of 40ifmmodepmelsetextpmfi{}6 GHz and a Rayleigh ratio of about 9 ifmmodetimeselsetexttimesfi{} ${10}^{ensuremath{-}7}$ ${mathrm{cm}}^{ensuremath{-}1}$. Its origin is less certain, but it may be a measure of the time of flight of mobile silver ions." @default.
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- W2024074003 title "Rayleigh-Brillouin spectra of the solid electrolyte Rb<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ag</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>I</mml:mi></mml:mrow><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:mrow></…" @default.
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- W2024074003 doi "https://doi.org/10.1103/physrevb.18.2995" @default.
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