Evaluation of suitability of GaAs:Cr sensors for X-ray transmission technology of diamond-bearing ore enrichment

The paper demonstrates the experimental results of testing of multichannel GaAs: Cr detector prototypes for X-ray transmission sorters. The results of investigations of X-ray image quality dependence on X-ray intensity, sensor temperature and bias voltage value are presented. It was demonstrated that application of GaAs: Cr sensors for X-ray transmission separation allows detection of diamonds with size of 2×2 mm
²
mm at conveyor belt speed up to 1 m/s.