| 发明名称 |
PHOSPHORS, AND RADIATION DETECTORS AND X-RAY CT UNIT MADE BY USING THE SAME |
| 摘要 |
Novel phosphors represented by the general formula: (Gd1-xCex)3Al5-yGayO12 (wherein x is a value satisfying the relationship: 0.0005≤x≤0.02; and y is a value satisfying the relationship: 0<y<5). These phosphors exhibit high fluorescence outputs by virtue of the Al and Ga coexistent with the Gd phosphors. In particular, when the Ga concentration (y) lies within the range of 2 to 3, the phosphor exhibits a fluorescence output as high as twice that of the phosphor of the prior art. Radiation detectors wherein the phosphors are used as the ceramic scintillator exhibit extremely low afterglow and high scintillation outputs. <IMAGE> |
| 申请公布号 |
EP1043383(B2) |
申请公布日期 |
2007.05.30 |
| 申请号 |
EP19980961475 |
申请日期 |
1998.12.22 |
| 申请人 |
HITACHI MEDICAL CORPORATION |
发明人 |
YAMADA, HIROMICHI;SATO, MAKOTO;MIURA, ICHIRO;DOI, MOTOMICHI;KOBIKI, TAKAAKI |
| 分类号 |
C09K11/80;A61B6/03;C09K11/00;C09K11/77;G01T1/20;G21K4/00 |
主分类号 |
C09K11/80 |
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