Abstract
Background
In this study, three sample detectors have been prepared by using cerium-activated YAG nanoscintillator (Y3Al5O12: Ce3+) synthesized by sol–gel method and heat-treat at 900 °C for 2 h in different atmospheres such as vacuum, air and nitrogen.
Purpose
Many studies about YAG: Ce3+ single crystal have been carried out, but the material at the nanoscale remains not enough understood. The objective of the present paper is to investigate the effects of annealing atmosphere on the scintillation properties and identify the suitable atmosphere that allow to design radiation detectors with high scintillation efficiency.
Methods
In order to accurately assess the scintillation properties, the nanoscintillator sample powders have been designed as a detector, in which, preparation operations such as surface homogenization and efficiency coupling with photomultiplier tube (PMT) window were developed. The study was performed using γ-rays 662 keV released from137Cs radioactive source, the bi-alkali GDB-4FF PMT was used as a photodetector. Nuclear instrumentation chain was set up in order to collect the pulse height spectra, NaI:Tl single-crystal scintillator was used as a reference detector to estimate the scintillation light yield. The delayed coincidence method was used for measuring the scintillation decay time of nanoscintillator sample detectors.
Results
The sample detector annealed at vacuum atmosphere exhibits the best scintillation properties, the scintillation light yield was estimated to be 14,600 ± 3400 ph/MeV and the fast component in the scintillation decay was 90 ns.
Conclusion
The vacuum is the suitable atmosphere which allows the development of radiation detectors with high scintillation efficiency.
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Zahra, B., Guerbous, L., Bousbia-salah, H. et al. Effect of annealing atmospheres on the scintillation properties of Ce3+-doped YAG nanoscintillator. Radiat Detect Technol Methods 7, 447–456 (2023). https://doi.org/10.1007/s41605-023-00397-x
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DOI: https://doi.org/10.1007/s41605-023-00397-x