A spectrometric approach to measuring the Rayleigh scattering length for liquid scintillator detectors

Good optical transparency is a fundamental requirement of liquid scintillator (LS) detectors. Characterizing the to its own emitted light key parameter determine overall sensitivity large-volume detector. The attenuation in an optical-pure LS dominated by Rayleigh scattering, which poses intrinsic limit LS. This work presents spectrometric approach measuring wavelength-dependent scattering length liquids applying theEinstein-Smoluchowski theory measurement scattered intensity. lengths linear alkyl benzene (LAB) and EJ309-base (Di-isopropylnaphthalene, DIN) were measured are reported wavelength range 410–520 nm. spectral peak scintillation nominal around 430 nm at for LAB EJ-309-base determined be 27.9 ± 2.3 m 6.1 0.6 m.