PHOSPHOR AND X-RAY INTENSIFYING SCREEN PREPARED BY USING THE SAME

PHOSPHOR AND X-RAY INTENSIFYING SCREEN PREPARED BY USING THE SAME

PURPOSE:To prepare a phosphor capable of providing an X-ray intensifying screen which emits light upon being excited by X-radiation and is excellent in the sensitivity of the intensifying screen, sharpness of image quality and graininess characteristics, by incorporating dysprosium in a terbium-acti...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHINOMIYA MOTOICHI, IWAMOTO SATORU
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
GAMMA RAY OR X-RAY MICROSCOPES
IRRADIATION DEVICES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
PAINTS
PHYSICS
POLISHES
TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:PURPOSE:To prepare a phosphor capable of providing an X-ray intensifying screen which emits light upon being excited by X-radiation and is excellent in the sensitivity of the intensifying screen, sharpness of image quality and graininess characteristics, by incorporating dysprosium in a terbium-activated rare earth oxysulfide phosphor. CONSTITUTION:Dysprosium is incorporated as a coactivator in an amt. of 0-2.0mol%, pref. 0.1-1.0mol% based on 1mol of a terbium-activated rare earth oxysulfide phosphor to prepare a phosphor having a compsn. of the formula (wherein Ln is Y, Gd, La or Lu; 5X10