Resin/phosphor composite scintillator, and scintillator array
AssigneeMitsubishi Chemical Corporation
InventorsTakeshi Kuriwada, Takeshi Oomori, Tomoyuki Kurushima
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Abstract
The present invention addresses the problem of providing a scintillator which has excellent impact resistance and favorable workability and moldability. The problem is solved by a resin-phosphor composite scintillator which contains a resin and a phosphor and is capable of converting irradiated radiation into visible light. In this composite scintillator, a brightness retention rate, which is measured 24 hours after 38-minute irradiation with an X-ray to a total irradiation dose of 13 kGy at a distance of 40 mm from a radiation source, is 65% or higher; the Rockwell hardness is 30 HRM or higher; and the content of the resin is not less than 10% by weight.
Claims11
A resin-phosphor composite scintillator, comprising:
- a resin;
- and
- a phosphor;
- wherein:
- the scintillator is capable of converting irradiated radiation into visible light;
- a brightness retention rate of the scintillator, when measured 24 hours after 38-minute irradiation with an X-ray to a total irradiation dose of 13 kGy at a distance of 40 mm from a radiation source, is 65% or higher;
- a Rockwell hardness of the scintillator is 30 HRM or higher;
- a content of the resin in the scintillator is not less than 10% by weight;
- the resin is a cured product obtained using a cationic polymerization initiator;
- the resin comprises at least one selected from the group consisting of a hydrogenated epoxy resin and an epoxy silicone resin;
- and
- a content of the cationic polymerization initiator is 1.5 parts by weight or less with respect to 100 parts by weight of resin.
Dependencies are inferred from the claim text.