Thermoluminescence study of cerium-doped lanthanum halides

Thermoluminescence study of cerium-doped lanthanum halides
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DOI：
10.1002/pssc.200673881
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发表时间：
2007-03
期刊：
Physica Status Solidi (c)
影响因子：
--
通讯作者：
O. Sellès;M. Fasoli;A. Vedda;M. Martini;D. Gourier
O. Sellès;M. Fasoli;A. Vedda;M. Martini;D. Gourier
中科院分区：
其他
文献类型：
--
作者：
O. Sellès;M. Fasoli;A. Vedda;M. Martini;D. Gourier

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Point defects and impurities play a major role in optical properties of scintillators, as they can be at the origin of afterglow emission, which are detrimental for the applications. Spectrally-resolved thermally stimulated luminescence (TSL) is used here to study defects possibly affecting scintillation properties of LaCl3:Ce and LaBr3:Ce samples grown by Saint-Gobain Crystals & Detectors. In the case of LaCl3:Ce, after X-ray irradiation two major glow peaks with complex structures are detected at 23 K and 63 K (when measured at a heating rate of 0.1 K/s). A more composite structure of the TSL pattern of LaBr3:Ce is observed. Possible explanations and implications of these findings are discussed. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)