Measurements of Rayleigh Ratios in Linear Alkylbenzene

Abstract

In present work an experiment has been designed to measure Rayleigh ratios directly at 405 nm and 432 nm for linear alkylbenzene which is a common solvent used in liquid scintillator detectors of neutrino experiments. The perpendicularly polarized Rayleigh ratio is determined to be (4.52 ± 0.28) × 10 −6 m −1 • sr −1 at 405 nm and (3.82 ± 0.24) × 10 −6 m −1 • sr −1 at 432 nm, and the corresponding Rayleigh scattering length is L Ray = 22.9 ± 0.3(stat.) ± 1.7(sys.) m at 405 nm and L Ray = 27.0 ± 0.9(stat.) ± 1.8(sys.) m at 432 nm.