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Timing performance of ZnO:Ga nanopowder composite scintillators
Author(s) -
Turtos Rosana M.,
Gundacker Stefan,
Lucchini Marco T.,
Procházková Lenka,
Čuba Václav,
Burešová Hana,
Mrázek Jan,
Nikl Martin,
Lecoq Paul,
Auffray Etiennette
Publication year - 2016
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201600288
Subject(s) - scintillator , nanosecond , nanocrystal , materials science , optoelectronics , ultrashort pulse , detector , composite number , particle detector , optics , nanotechnology , physics , laser , composite material
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. (© 2016 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)