The LaBr3:Ce Crystal Growth by Self-Seeding Bridgman Technique and Its Scintillation Properties
The LaBr3:Ce Crystal Growth by Self-Seeding Bridgman Technique and Its Scintillation Properties
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DOI：
10.1021/cg100557e
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发表时间：
2010-10-01
影响因子：
3.8
通讯作者：
Shu, Kangying
中科院分区：
文献类型：
--
作者：
Shi, Hongsheng;Qin, Laishun;Shu, Kangying
The LaBr3:Ce crystal is difficult to grow although it has very excellent scintillation properties. In this paper. the LaBr3:Ce crystals have been grown by the self-seeding Bridgman technique, and the circle divide 38 mm x 50 mm LaBr3:Ce single crystal ingot has been achieved. It is found that the orientation of the crystal growth has a close relationship with the lowering velocity and the quartz ampule shape. The 1 mm/h lowering velocity is very helpful or the [001] direction to dominate the crystal growth under the certain ampule shape, thus avoiding the crystal crack effectively, and the 0.5 mm/h lowering velocity is helpful for the [100] direction to dominate the crystal growth under the same ampule shape, On this basis, the mechanism of the nuclei competition is discussed. The UV luminescence and the X-ray excited emission spectra of the LaBr3:Ce crystal have also been investigated.
