Significant increase in fast scintillation component from PbWO4 by annealing
Significant increase in fast scintillation component from PbWO4 by annealing
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DOI：
10.1016/j.nima.2004.08.033
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发表时间：
2005-01-21
影响因子：
1.4
通讯作者：
Itoh, M
中科院分区：
文献类型：
--
作者：
Kobayashi, M;Usuki, Y;Itoh, M
为了在正电子发射断层扫描（PET）中与Bi4Ge3O12（BGO）竞争，需要在200 ns内将钨酸铅PbWO4（PWO）的光产额（LY）提高几倍以上。而（Mo，Cd，Sb）共掺杂使（LY）增加超过两倍（Nucl.Instr. Meth. 486（2002）170），慢得多的分量（类似于20毫秒）伴随。我们已经发现，长时间退火的非掺杂的PWO在低压Ar中给出更大的LY在快速的组件与更少的慢的一个比（Mo，Cd，Sb）共掺杂。这种改进在高能和核实验中也是有用的。(C)2004 Elsevier B.V.保留所有权利。
Increase in the light yield (LY) of lead tungstate PbWO4 (PWO) more than a few times within similar to200 ns is required to utilize PWO in Positron Emission Tomography (PET) in competition with Bi4Ge3O12 (BGO). While the (Mo, Cd, Sb) co-doping increases the (LY) more than twice (Nucl. Instr. Meth. A 486 (2002) 170), much slower component (similar to20 ms) accompanies. We have found that long-time annealing of non-doped PWO in low-pressure Ar gives even larger LY in the fast component with much less in the slower one than the (Mo, Cd, Sb) co-doping. This improvement could also be useful in high energy and nuclear experiments. (C) 2004 Elsevier B.V. All rights reserved.