Comparison of luminescence, energy resolution and light loss coefficient of Gd1.53La0.47Si2O7:Ce and Lu1.9Y0.1SiO5:Ce scintillators
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Publication Details
Author list: Yawai N., Wantong K., Chewpraditkul W., Murakami R., Horiai T., Kurosawa S., Yoshikawa A., Nikl M.
Publisher: Elsevier
Publication year: 2017
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (0168-9002)
Volume number: 844
Start page: 129
End page: 134
Number of pages: 6
ISSN: 0168-9002
eISSN: 1872-9576
Languages: English-Great Britain (EN-GB)
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Abstract
The luminescence and scintillation properties of Gd1.53La0.47Si2O7:Ce (GPSLa23.5%:Ce) scintillators were investigated and compared to those of Lu1.9Y0.1SiO5:Ce (LYSO:Ce) scintillators. At 662 keV γ-rays, the light yield of 33,500±3300 ph/MeV obtained for GPSLa23.5%:Ce is higher than that of 28,100±2800 ph/MeV obtained for LYSO:Ce. The energy resolution of 4.8±0.2% obtained for GPSLa23.5%:Ce is much better than that of 8.2±0.3% obtained for LYSO:Ce due to its better intrinsic resolution and proportionality of light yield. The light yield and energy resolution for α- rays, as well as a light yield ratio under excitation with α - and γ - rays (α/γ ratio) were also determined. The intrinsic light yield and light loss coefficient under excitation with 662 keV γ-rays were evaluated. The total attenuation coefficient at 60 keV and 662 keV γ - rays was also determined and compared with the theoretical one calculated using the WinXCom program. © 2016 Elsevier B.V.
Keywords
GPSLa23.5%:Ce, Lu1.9Y0.1SiO5:Ce
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