| 摘要 |
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: LaCeA?Am, 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;Amis 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 2·10to 2·10. 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 ofAm within the scintillation material.13 cl, 7 dwg |
