Novel Scintillation Material—ZnO Transparent Ceramics
Abstract
ZnO-based scintillation ceramics for application in HENPA LENPA analyzers have been investigated. The following ceramic samples have been prepared: undoped ones (ZnO), an excess of zinc in stoichiometry (ZnO:Zn), doped with gallium (ZnO:Ga) and lithium (ZnO:Li). Optical transmission, x-ray excited emission, scintillation decay and pulse height spectra were measured and analyzed. Ceramics have reasonable transparency in visible range (up to 60% for 0.4 mm thickness) and energy resolution (14.9% at 662 keV Cs137 gamma excitation). Undoped ZnO shows slow (1.6 {\mu}s) luminescence with maximum at 2.37 eV and light yield about 57% of CsI:Tl. ZnO:Ga ceramics show relatively low light yield with ultra fast decay time (1 ns). Lithium doped ceramics ZnO:Li have better decay time than undoped ZnO with fair light yield. ZnO:Li ceramics show good characteristics under alpha-particle excitation and can be applied for the neutral particle analyzers.
- Publication:
-
IEEE Transactions on Nuclear Science
- Pub Date:
- October 2012
- DOI:
- 10.1109/TNS.2012.2189896
- arXiv:
- arXiv:1111.2147
- Bibcode:
- 2012ITNS...59.2152R
- Keywords:
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- Condensed Matter - Materials Science;
- Nuclear Experiment;
- Physics - Instrumentation and Detectors
- E-Print:
- 4 pages, 8 figures, research covered in this paper was presented at SCINT2011 conference as a poster, submitted for publication at IEEE Trans. Nucl. Sci