Dehydration and solid solution formation for the LaBr_3-CeBr_3 binary system

机译：LaBr_3-CeBr_3二元体系的脱水和固溶形成

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Anhydrous cerium bromide (CeBr_3) and cerium doped lanthanum bromide (Ce~(+3) -LaBr_3) were obtained by the dehydration of hydrates synthesized by a direct acidification process. The dehydration process involves heating in vacuum through three phase changes - hydrate, amorphous, and crystalline LaBr_3. Incomplete removal of the bound water leads to the formation of oxybromides and the partial reduction of the lanthanum at high temperatures. It was found that upon the completion of dehydration (< 200 ℃) a complete solid solution can be formed between LaBr_3 and CeBr_3. These two compounds form a simple binary phase diagram. Challenges associated with the dehydration process are discussed.

机译：通过直接酸化法合成的水合物经脱水得到无水溴化铈（CeBr_3）和铈掺杂的溴化镧（Ce〜（+3）-LaBr_3）。脱水过程涉及在真空中通过三个相变进行加热-水合物，无定形和结晶LaBr_3。结合水的不完全去除会导致溴氧化物的形成以及在高温下镧的部分还原。结果发现，在脱水（<200℃）完成后，可以在LaBr_3和CeBr_3之间形成完全的固溶体。这两种化合物形成简单的二元相图。讨论了与脱水过程相关的挑战。

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来源
《Penetrating Radiation Systems and Applications VII; Proceedings of SPIE-The International Society for Optical Engineering; vol.6707》|2007年|P.7.1-7.8|共8页
会议地点 San DiegoCA(US)
作者
Pin Yang; Christopher B. DiAntonio; Timothy J. Boyle; Mark A. Rodriguez; Margaret R. Sanchez;
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作者单位

Sia National Laboratories, Albuquerque, NM, USA 87185-1245;

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会议组织
原文格式 PDF
正文语种 eng
中图分类探测仪器及系统;电离辐射和放射性计量;
关键词
lanthanum halides; scintillation; dehydration; phase diagram; solid solution;

机译：卤化镧；闪烁；脱水；相图；固溶体;

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Dehydration and solid solution formation for the LaBr_3-CeBr_3 binary system

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