Title:
CERAMIC FLUORESCENT MATERIAL, SCINTILLATOR ARRAY, RADIATION DETECTOR, AND RADIATION COMPUTED TOMOGRAPHIC APPARATUS
Document Type and Number:
Japanese Patent JP2021147508
Kind Code:
A
Abstract:
To provide a ceramic fluorescent material having stable sensitivity, a scintillator array, and a radiation detector and a radiation computed tomographic apparatus including the same.SOLUTION: A ceramic fluorescent material has: main component; and S, the main component containing Ce as a light emission element, at least one selected from the group consisting of Y, Gd and Lu, at least one selected from the group consisting of Al and Ga, and O and having a garnet crystal structure. The main component has a composition represented by the following general formula: (Y, Gd, Lu, Ce)3+a(Al, Ga)5-aO12 (0≤a≤0.1), and the content of S is more than 0 and 40 mass ppm or less relative to the main component.SELECTED DRAWING: Figure 3
Inventors:
TERASAWA SHINSUKE
HIRANO TAKESHI
HIRANO TAKESHI
Application Number:
JP2020049000A
Publication Date:
September 27, 2021
Filing Date:
March 19, 2020
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
C09K11/80; C01G15/00; C09K11/00; G01T1/20; G21K4/00
Attorney, Agent or Firm:
Seiji Okuda
Osamu Kita
Michi Kajitani
Osamu Kita
Michi Kajitani