Low frequency polarized and depolarized light scattering in Hhyphen;bonded liquids: CH3(CH2)nminus;1OH (n=1,...,5)

摘要

Polarized and depolarized room temperature light scattering spectra of normal alcohols from methanol to pentanol have been measured up to 80 cmminus;1frequency shift. At low frequency shifts (smaller than 4 cmminus;1), resolutions as high as 0.04 cmminus;1have been used. The possibility of using the same spectrometer for measuring both low frequency Brillouin structures and high frequency depolarized tails allows for the first time a precise determination of both lineshapes and relative integrated intensities between the various spectral components. The experimental results are presented and briefly discussed on the basis of the existing theories for depolarized scattering from molecular liquids.