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Fabrication of HfxSi1−xO2 microparticle-loaded PVK-based plastic scintillators using the sol–gel method for high-energy X-ray detection at high counting rate.
- Source :
- Journal of Materials Science: Materials in Electronics; Dec2021, Vol. 32 Issue 24, p28807-28818, 12p
- Publication Year :
- 2021
-
Abstract
- We synthesized Hf<subscript>x</subscript>Si<subscript>1−x</subscript>O<subscript>2 </subscript>microparticle-loaded poly(9-vinylcarbazole) (PVK)-based plastic scintillators using the sol–gel method for high-energy X-ray detection at a high counting rate. We successfully dispersed Hf<subscript>x</subscript>Si<subscript>1−x</subscript>O<subscript>2</subscript> microparticles into PVK-based plastic scintillators using hafnium dichloride oxide octahydrate and phenyltrimethoxysilane at Hf concentrations of up to 20 wt%. The scintillation decay time constants of the first component were approximately 2.0 ns. Loading Hf<subscript>x</subscript>Si<subscript>1−x</subscript>O<subscript>2</subscript> microparticles enhanced the detection efficiency for 67.41 keV X-rays. The detection efficiency per 1 mm thickness and light yield of the Hf-12.5 wt%-loaded plastic scintillator were, respectively, 2.0 and 1.1 times higher than those of EJ-256, a commercial Pb-5 wt%-loaded plastic scintillator. The decrease in light yield was successfully suppressed; the light yield was reduced by 44% even at a Hf concentration of 12.5 wt%. We successfully enhanced the high-energy X-ray detection characteristics of PVK-based plastic scintillators using the sol–gel method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 32
- Issue :
- 24
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 153585600
- Full Text :
- https://doi.org/10.1007/s10854-021-07265-8