Ceramic radiation shield and radiation detector using same

Sintered ceramics having such high radiation shielding capability and so easy to machine that they can be used as a radiation shield for radiation detectors are disclosed. The ceramics show a radiation shielding capability more than 90% and preferably have high light reflecting performance. They may...

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Bibliographic Details
Main Authors FURUICHI SHINJI, SASAKI TAKEO, TSUNOTA KENICHI, YAMADA NOBUYUKI
Format Patent
LanguageEnglish
Published 17.12.2002
Edition7
Subjects
ADHESIVES
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
DYES
LIME, MAGNESIA
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PHYSICS
POLISHES
REFRACTORIES
SLAG
TESTING
TREATMENT OF NATURAL STONE
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Summary:Sintered ceramics having such high radiation shielding capability and so easy to machine that they can be used as a radiation shield for radiation detectors are disclosed. The ceramics show a radiation shielding capability more than 90% and preferably have high light reflecting performance. They may comprises rare-earth oxides such as gadolinium oxide, oxide of at least one of vanadium, tantalum and niobium and alkali-earth oxide which is used for a sintering agent. They can be used as a radiation shield in place of a molybdenum or tungsten radiation shielding plate and also as a light reflecting film instead of titanium dioxide film in a radiation detector for radiation CT equipment.
Bibliography:Application Number: US20000588232