BARIUM FLUORIDE-BASED HIGH-SPEED SCINTILLATION MATERIAL AND METHOD FOR PRODUCTION THEREOF (VERSIONS) Russian patent published in 2012 - IPC G01T1/202 

FIELD: chemistry.

SUBSTANCE: invention relates to scintillation equipment, mainly efficient high-speed scintillation detectors for detecting gamma and X-ray quanta in devices for instant diagnosis in medicine, industry, cosmetic equipment and scientific research. The scintillation material is a crystal or ceramic of the composition BaF₂-xTmF₃, where x = 0.01-2.5 mol %. One of the methods involves treating the starting crystalline material of the composition BaF₂-xTmF₃, where x = 0.01-2.5 mol % in the medium of gaseous CF₄. The second method involves treatment by hot pressing the starting crystalline material BaF₂-xTmF₃, where x = 0.01-2.5 mol %, which is in form of a ceramic after treatment and which is annealed in the medium of gaseous CF₄.

EFFECT: high intensity and overall luminescence light output.

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