SCINTILLATING SUBSTANCE AND SCINTILLATING WAVE-GUIDE ELEMENT

摘要

The present invention pertains to the fields of nuclear physics, medicine and petroleum industry, and may essentially be used for measuring X-ray, gamma and alpha radiation. This invention can also be used for monitoring the concentration of transuranic radionuclides in human habitat, for the nondestructive structural analysis of solid bodies, for performing a threedimensional positron-electron computerised tomography, etc. This invention essentially relates to the introduction of additional ingredients into the chemical composition of a scintillating substance based on oxyorthosilicate crystals which include cerium (Ce) as well as Lu2SiO5 capable of crystallisation in the structural type. The results of this invention are: an increase in the luminescence light efficiency; a reduction of the luminescence period of Ce3+ ions; an increase in the reproducibility of grown crystal properties; a lower cost of the starting mixture used for growing scintillator crystals and containing Lu2O3 in large quantities; a higher introduction efficiency of the luminescent radiation from a scintillating crystal into a fiberoptic wave-guide; the prevention of crystal decrepitation during the element manufacturing process; the creation of wave-guide properties in scintillating elements; and the elimination of the expensive mechanical polishing of the side surface thereof.