Scintillation Properties of Transparent Ceramic Pr:LuAG for Different Pr Concentration
Scintillation Properties of Transparent Ceramic Pr:LuAG for Different Pr Concentration
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DOI：
10.1109/tns.2012.2189583
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发表时间：
2012-04
影响因子：
1.8
通讯作者：
Takayuki Yanagida;Y. Fujimoto;K. Kamada;D. Totsuka;Hideki Yagi;T. Yanagitani;Y. Futami;S. Yanagida-S.-Y
中科院分区：
文献类型：
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作者：
Takayuki Yanagida;Y. Fujimoto;K. Kamada;D. Totsuka;Hideki Yagi;T. Yanagitani;Y. Futami;S. Yanagida-S.-Y
采用烧结法制备了Pr掺杂0.2-1%的Lu3Al5O12(Pr：LuAG)透明光学陶瓷。我们将其光学和闪烁特性与传统的提拉法生长的单晶进行了比较。到目前为止，Pr：LuAG闪烁陶瓷在光产额方面似乎不如其单晶类似物。然而，在目前的情况下，我们的Pr掺杂0.25%的陶瓷样品在γ光激发下表现出比单晶高20%的光产额。此外，在陶瓷样品中，较慢的闪烁衰减分量被抑制，与缺陷相关的宿主发射也被抑制。因此，优化的光学陶瓷工艺与单晶相比具有很强的竞争力，并为原有材料在快闪烁体领域开辟了巨大的实用前景。
We manufactured transparent optical ceramic of Pr 0.2-1% doped Lu3Al5 O12 (Pr:LuAG) by the sintering method. We compare its optical and scintillation properties with the single crystal counterpart grown by the conventional Czochralski method. So far the scintillation ceramic of Pr:LuAG appeared inferior to its single crystal analog especially in terms of light yield. However, in the present case our ceramic Pr 0.25%-doped sample exhibited by 20% higher light yield compared to single crystal under γ-ray excitation. Furthermore, in the ceramic sample the slower scintillation decay components were suppressed and the defect related host emission as well. The optimized technology of optical ceramics thus appears very competitive to single crystals and opens great practical prospectives for the former materials in the field of fast scintillators.