Following the investigations of the structure and scintillation properties of Ca-doped zinc tungstate powder [phys. stat. sol. (a) 204, 730 (2007)] a single-crystal of ZnWO4-Ca (0.5 mol%) was grown and characterised. The relative light output, energy resolution and decay characteristics were measured for pure and Ca-doped ZnWO4 scintillatiors. An increase in the light yield of similar to 40% compared with the undoped crystal, and an energy resolution 9.6% (Cs-137) were obtained for Ca-doped ZnWO4. The observed improvement is attributed to the reduction of self-absorption (bleaching) of the crystal. The cause of bleaching as well as the possible contribution of scattering is discussed. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Fujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R ChinaFujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
Yao, Yang Rong
Bin Huang, Rong
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Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310032, Zhejiang, Peoples R ChinaFujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
Bin Huang, Rong
Zhou, Huan
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Zhejiang Univ Technol, Res Ctr Anal & Measurement, Hangzhou 310014, Zhejiang, Peoples R ChinaFujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
Zhou, Huan
Huang, Wan Zhen
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Zhejiang Univ Technol, Res Ctr Anal & Measurement, Hangzhou 310014, Zhejiang, Peoples R ChinaFujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
Huang, Wan Zhen
Zhang, Yong
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Hangzhou Area Mil Representat Off, Hangzhou 310011, Zhejiang, Peoples R ChinaFujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
Zhang, Yong
Song, Xu Chun
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Fujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R ChinaFujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China