A promising high-density scintillator of GdTaO4 single crystal

A crack-free GdTaO 4 single crystal as a promising high-density scintillator is grown successfully by the Czochralski method. High crystalline quality of the as-grown crystal has been demonstrated by its X-ray rocking curve. Its density is 8.94 g cm −3 , which is the highest among current inorganic...

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Bibliographic Details
Published in:CrystEngComm 2014-01, Vol.16 (12), p.248-2485
Main Authors: Yang, Huajun, Peng, Fang, Zhang, Qingli, Guo, Changxin, Shi, Chaoshu, Liu, Wenpeng, Sun, Guihua, Zhao, Yiping, Zhang, Deming, Sun, Dunlu, Yin, Shaotang, Gu, Mu, Mao, Rihua
Format: Article
Language:English
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Summary:A crack-free GdTaO 4 single crystal as a promising high-density scintillator is grown successfully by the Czochralski method. High crystalline quality of the as-grown crystal has been demonstrated by its X-ray rocking curve. Its density is 8.94 g cm −3 , which is the highest among current inorganic single-crystal scintillators. The absolute light yield of GTO is about three times as that of PbWO 4 and the scintillation decay consists of a fast component of 72.6 ns and a slow component of 1236.2 ns. Additionally, the photoluminescence measurements of GTO indicate a complicated mechanism. Its fundamental physical properties including hardness, density, and thermal properties are determined for the first time, which are very important for crystal growth and its applications. A crack-free GdTaO 4 single crystal has been grown successfully and is proposed as a promising high-density scintillator.
ISSN:1466-8033
1466-8033
DOI:10.1039/c3ce42350f