Timing performance of ZnO:Ga nanopowder composite scintillators

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• 作者：Rosana M. Turtos ; Stefan Gundacker ; Marco T. Lucchini ; Lenka Prochá ; zková ; Vá ; clav Čuba ; Hana Burešová ; Jan Mrá ; zek ; Martin Nikl ; Paul Lecoq and Etiennette Auffray
• 刊名：physica status solidi (RRL) - Rapid Research Letters
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：10
• 期：11
• 页码：843-847
• 全文大小：891K
• ISSN：1862-6270

文摘

The implementation of nanocrystal-based composite scintillators as a new generation of ultrafast particle detectors is explored using ZnO:Ga nanopowder. Samples are characterized with a spectral-time resolved photon counting system and pulsed X-rays, followed by coincidence time resolution (CTR) measurements under 511 keV gamma excitation. Results are comparable to CTR values obtained using bulk inorganic scintillators. Bringing the ZnO:Ga nanocrystal's timing performance to radiation detectors could pave the research path towards sub-20 ps time resolution as shown in this contribution. However, an efficiency boost when placing nanopowders in a transparent host constitutes the main challenge in order to benefit from sub-nanosecond recombination times. (