Fabrication, microstructure and properties of highly transparent Ce3+:Lu3Al5O12 scintillator ceramics
Fabrication, microstructure and properties of highly transparent Ce3+:Lu3Al5O12 scintillator ceramics
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DOI：
10.1016/j.optmat.2014.01.017
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发表时间：
2014-10
影响因子：
3.9
通讯作者：
Shuping Liu;Xi-qi Feng;Yun Shi;Lexiang Wu;Jialiang Luo;Wen Wang;Yu-bai Pan
中科院分区：
文献类型：
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作者：
Shuping Liu;Xi-qi Feng;Yun Shi;Lexiang Wu;Jialiang Luo;Wen Wang;Yu-bai Pan
采用固相反应法制备了Ce 3+：Lu 3Al 5 O 12（Ce：LuAG）闪烁体陶瓷。获得了高的透明度（在550 nm处为约80%），晶界干净并且没有观察到第二相。通过空气退火工艺进一步优化后，Ce：LuAG陶瓷在X射线激发下的稳态闪烁效率比BGO单晶高得多，光产额（137 Cs，662 KeV）比优化前提高了近一倍。研究了Ce：LuAG陶瓷在2 × 105 Gy剂量率约1 × 104 Gy/h的60 Co γ射线辐照下的抗辐照性能。辐射诱导吸收出现在380 nm和610 nm处（远离Ce：LuAG的发射带），表明其在高能物理中的应用前景。
Ce3+:Lu3Al5O12(Ce:LuAG) scintillator ceramics were fabricated using solid state reaction method. High transparency (∼80% at 550 nm) was obtained, the grain boundary was clean and no secondary phase was observed. After further optimized by an air-annealing process, Ce:LuAG ceramic shows a much higher steady state scintillation efficiency than that of BGO single crystal under X-ray excitation, and the light yield (137Cs, 662KeV) improved around double compared with that of the before one. The radiation hardness of Ce:LuAG ceramic was investigated under60Co gamma radiation with dose of 2 × 105Gy and a dose rate of about 1 × 104Gy/h. The radiation induced absorption appears in ∼380 nm and 610 nm (away from the emission band of Ce:LuAG) demonstrating its perspective for application in High Energy Physics.