Scintillator material and radiation detector

Patent metadata

Field	Value
Publication number	US-11249201-B2
Application number	US-201816153101-A
Country	US
Kind code	B2
Filing date	Oct 5, 2018
Priority date	Oct 13, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A scintillator material includes a matrix phase and scintillator parts dispersed in the matrix phase. The scintillator parts contain fine particles of single crystal. According to the above aspect, since the scintillator parts containing the fine particles of single crystal are dispersed in the matrix phase, it is possible to reduce an influence from an environment.

First claim

The invention claimed is:

1. A scintillator material comprising:
a matrix phase; and
scintillator parts dispersed in the matrix phase,
wherein the scintillator parts consist of fine particles of a halogenide which is a single crystal or a polycrystal,
wherein the matrix phase is silica,
wherein the scintillator parts are eccentrically distributed in a center of a crystal region in which a part of the silica is crystalized, and
wherein the fine particle is a deliquescent compound.

2. The scintillator material according to claim 1 ,
wherein the crystal region includes a cristobalite structure in which a part of the silica is crystalized.

3. The scintillator material according to claim 1 ,
wherein the compound is a luminescent material expressed by SrI 2 :Eu.

4. The scintillator material according to claim 1 ,
wherein the compound is a luminescent material expressed by CsI:Tl.

5. A radiation detector comprising:
a substrate;
the scintillator material according to claim 1 provided at one side of the substrate; and
a photoelectric conversion element provided at the other side of the substrate,
wherein the substrate is configured such that a transmissivity of light having a peak wavelength of light emitted from the scintillator material is 50% or greater.

Assignees

• Koito Mfg Co Ltd

Inventors

• Daicho Hisayoshi

Classifications

• G01T1/202 Primary

  the detector being a crystal · CPC title

• G01T1/16

  Measuring radiation intensity (G01T1/29 takes precedence {; self-powered detectors G01T3/006; using an ionisation chamber filled with a liquid or solid, e.g. frozen liquid, dielectric G01T3/008}) · CPC title

• G01T1/2002

  Optical details, e.g. reflecting or diffusing layers · CPC title

• G01T1/20

  with scintillation detectors · CPC title

• G01T1/2023 Primary

  Selection of materials · CPC title