SOLID SCINTILLATION MATERIAL Russian patent published in 2015 - IPC G01T1/202 C01F17/00 C30B29/12 

FIELD: chemistry.

SUBSTANCE: invention can be used in detectors for detecting ionising radiation in the form of low-energy electromagnetic waves, gamma-, X-rays, cosmic rays and particles. The solid scintillation material is characterised by the general formula: La_(1-n-m)Ce_mA₃ ²⁴¹Am_n, where A is an anion of one or more halogens selected from a group consisting of bromine, chlorine and iodine; cations of La and Ce, together with anions of halogen A, form a solid matrix; ²⁴¹Am³⁺ is a cation of the americium-241 (III) isotope; m is the molar ratio of substitution of lanthanum with cerium and assumes a value ranging from greater than 0 to 0.3; n is the molar ratio of substitution of lanthanum with americium-241 (III) and assumes a value from 2·10^-12 to 2·10^-10. The material is crystalline or monocrystalline and is made using a Bridgman-Stockbarger method, a Kyropoulos method or a Czochralski method.

EFFECT: high measurement accuracy in systems using a stabilisation method based on a reference source owing to substantially uniform distribution of ²⁴¹Am within the scintillation material.

13 cl, 7 dwg