Composite scintillation panels and elements based on fine-grained granules of crushed crystals

Abstract

The results of characteristics optimization of composite scintillation panels and elements for various applications have been presented. The dependences of the relative light yield intensity on particles size and thickness of the panel have been shown. The spatial resolution of the panels made of various fractions of the powder scintillator has been determined. The energy dependence on X-ray absorption efficiency of the scintillation panel based on ZnSe and the correspondence of effective thickness of the dispersed and single-crystal samples have been investigated. The results of the scintillation panels testing in the regime of registration of shadow images of biological and non-biological test objects under X-rays have been demonstrated. As a result of this work the composite scintillation material with improved properties of scintillation parameters homogeneity comparing with single-crystal ZnSe has been developed based on zinc selenide scintillator′s powder. This material was used in production of the composite scintillation panels and elements for X-ray detection by multichannel photodetectors.