Scintillation properties of pure and Ca-doped ZnWO4 crystals

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 measure...

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Veröffentlicht in:	Physica status solidi. A, Applications and materials science Applications and materials science, 2008-02, Vol.205 (2), p.335-339
Hauptverfasser:	Danevich, F. A., Henry, S., Kraus, H., McGowan, R., Mikhailik, V. B., Shkulkova, O. G., Telfer, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	29.40.Mc 78.70.−g 81.40.Tv Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Other solid inorganic materials Photoluminescence Physics
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Zusammenfassung:	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 scintillators. An increase in the light yield of ∼40% compared with the undoped crystal, and an energy resolution 9.6% (137Cs) 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. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	1862-6300 0031-8965 1862-6319
DOI:	10.1002/pssa.200723205