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首页> 外文期刊>Crystal Research and Technology: Journal of Experimental and Industrial Crystallography >Crystal Growth and Scintillation Properties of Non-Stoichiometric Cs2LiLaBr6:Ce
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Crystal Growth and Scintillation Properties of Non-Stoichiometric Cs2LiLaBr6:Ce

机译:非化学计量CS2LILABR6的晶体生长和闪烁性能:CE

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摘要

Because of incongruent melting, phase separation occurs when Cs2LiLaBr6:Ce (CLLB:Ce) is grown from a melt using stoichiometric raw materials. In this study, raw materials with different amounts of excess LiBr are used to grow CLLB:Ce crystals. It is found that enough excess of LiBr is beneficial to the crystal growth of CLLB:Ce. A transparent 1 x 2-in. CLLB:Ce single crystal is successfully grown by the vertical Bridgman method. The differential scanning calorimeter-thermogravimetric analysis (DSC-TG), X-ray diffraction, and inductively coupled plasma mass spectrometry results are used to understand the crystallization behavior at different stages of the crystal growth process. The luminescence and related scintillation properties of the CLLB:Ce single crystal are investigated. The relative light output of the CLLB:Ce single crystal is about 48 000 ph MeV-1, which is 80% that of the LaBr3:Ce crystal. The energy resolution of the CLLB:Ce single crystal is 4.0% at Cs-137 662 keV.
机译:由于熔融不一致,当CS2LILABR6:Ce(CLLB:Ce)使用化学计量原料从熔体生长时,发生相分离。 在该研究中,使用具有不同量的LEX的原料用于生长CLLB:Ce晶体。 发现足够过量的LEX有利于CLLB的晶体生长:CE。 透明1 x 2-in。 CLLB:CE单晶由垂直的Bridgman方法成功种植。 差分扫描量热计 - 热重分析(DSC-Tg),X射线衍射和电感耦合等离子体质谱结果用于了解晶体生长过程的不同阶段的结晶行为。 研究了CLLB:Ce单晶的发光和相关的闪烁性能。 CLLB的相对光输出:Ce单晶是约48000 pH mEV-1,其为Labr3:Ce晶体的80%。 CLLB的能量分辨率:Ce单晶在CS-137 662 KeV下为4.0%。

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