Abstract

The influence of the concentration of neodymium on the light attenuation length in aqueous and organic solutions is measured in a 1-m-long optical cell. The emission spectrum of scintillation crystal NaI(Tl) with a size of 25 × 25 mm irradiated with gamma rays from a Cs-137 source is used as a photon source. The photons are detected with a Hamamatsu R878 photomultiplier. A two-exponent approximation is used to model the light attenuation length in water (Nd 7.5, 15 g/L) and linear alkylbenzene (LAB) (Nd 4.7 g/L). For a Nd concentration in LAB of 4.7 g/L, the light attenuation length amounts to LNd = 1.95 ± 0.14 m.

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