Photoelectric fraction and total mass attenuation coefficient of Ce:YAG, Ce:GAGG and Ce:LUAG single crystals at 662 keV gamma radiation energy
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Publication Details
Author list: Phunpueok A., Thongpool V., Jaiyen S., Chewpraditkul W.
Publisher: Elsevier
Publication year: 2019
Volume number: 17
Start page: 1494
End page: 1499
Number of pages: 6
ISSN: 2214-7853
eISSN: 2214-7853
Languages: English-Great Britain (EN-GB)
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Abstract
The photoelectric fraction is a very important property for modern single crystal scintillators and can be used for stopping high energy photon in γ-ray detection. In this work, the photoelectric fractions of Ce:YAG, Ce:GAGG, and Ce:LuAG scintillating crystals are tested at 662 keV photon energy by using a γ-radiation spectroscopy technique. Each single crystal scintillator is connected to the photomultiplier tube (PMT) and the electrical signal from the PMT is amplified by preamplifier and spectroscopy amplifier for reducing noise and shaping signal, respectively. The proper signal pulse from amplifier is analyzed using a multichannel analyzer (MCA) and displayed in a spectrum domain by Tukan8k program. The measured spectra are used for calculating the photoelectric fraction of each scintillating crystal. The total mass attenuation coefficients at 662 keV γ-radiation of all scintillators are determined by measuring the intensity of radiation before and after passing though the scintillators using the law of Beer-Lambert. © 2019 Elsevier Ltd. All rights reserved.
Keywords
Ce:GAGG, Ce:LuAG, Ce:YAG, Photoelectric fraction, Total mass attenuation coefficient
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