Measurements of the Rayleigh ratio of some pure liquids at several laser light wavelengths

Abstract

The Rayleigh ratios Rv,v for vertically polarized incident and scattered radiation of benzene, toluene, carbon tetrachloride, and cyclohexane have been measured at a scattering angle of 90° and at 25 °C using argon–ion and krypton–ion lasers at wavelengths 488, 514.5, and 647.1 nm. The problem of the change of the scattering geometry with the refractive index of the investigated liquid was solved by a suitable experimental procedure. Errors are estimated to be in the range of 1%–2%.