OXYGEN-INCORPORATED RARE EARTH-ACTIVATED ALKALINE EARTH METAL FLUORINATED HALIDE-BASED PHOSPHORESCENT SUBSTANCE AND METHOD FOR PRODUCING THE SAME AND RADIATION IMAGE TRANSFORMATION PANEL

PROBLEM TO BE SOLVED: To obtain in high productivity a rare earth-activated alkaline earth metal fluorinated halide-based phosphorescent substance in the form of microparticles with narrow size distribution, and to provide a radiation image transformation panel of high sensitivity and high image qua...

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Hauptverfasser:	MASUTOMI HARUHIKO, WAKAMATSU HIDEAKI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR ADHESIVES APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CHEMISTRY CINEMATOGRAPHY DYES ELECTROGRAPHY GAMMA RAY OR X-RAY MICROSCOPES HOLOGRAPHY IRRADIATION DEVICES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEASUREMENT OF NUCLEAR OR X-RADIATION MEASURING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NUCLEAR ENGINEERING NUCLEAR PHYSICS PAINTS PHOTOGRAPHY PHYSICS POLISHES TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain in high productivity a rare earth-activated alkaline earth metal fluorinated halide-based phosphorescent substance in the form of microparticles with narrow size distribution, and to provide a radiation image transformation panel of high sensitivity and high image quality using the above phosphorescent substance. SOLUTION: This method for producing the objective oxygen-incorporated rare earth-activated alkaline earth metal fluorinated halide-based phosphorescent substance of general formula (1): Ba(1-x) M2(x) FBr(y) I(1-y) : aM1 , bLn, cO in a liquid phase is characterized by involiving obtaining a phosphorescent substance precursor by removing the solvent from a reaction mother liquor with a barium concentration of >=3.3 mol/L.