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Scintillation properties of pure and Ca-doped ZnWO4crystals

✍ Scribed by Danevich, F. A. ;Henry, S. ;Kraus, H. ;McGowan, R. ;Mikhailik, V. B. ;Shkulkova, O. G. ;Telfer, J.

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
253 KB
Volume
205
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

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 ZnWO~4~–Ca (0.5 mol%) was grown and characterised. The relative light output, energy resolution and decay characteristics were measured for pure and Ca‐doped ZnWO~4~ scintillators. An increase in the light yield of ∼40% compared with the undoped crystal, and an energy resolution 9.6% (^137^Cs) were obtained for Ca‐doped ZnWO~4~. 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. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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✍ Kraus, H. ;Mikhailik, V. B. ;Vasylechko, L. ;Day, D. ;Hutton, K. B. ;Telfer, J. 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 284 KB

## Abstract The future application of ZnWO~4~ scintillator in a cryogenic search for rare events is the motivation for optimization of this material. We present results on the effect of Ca doping on the structure and scintillation properties of ZnWO~4~. X‐ray diffraction analysis revealed that ther