Comparison of Lu3Al5O12:Pr3+ and Bi4Ge3O12 scintillators for gamma-ray detection
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Chewpraditkul W., Sreebunpeng K., Nikl M., Mares J.A., Nejezchleb K., Phunpueok A., Wanarak C.
Publisher: Elsevier
Publication year: 2012
Journal: Radiation Measurements (1350-4487)
Volume number: 47
Issue number: 1
Start page: 1
End page: 5
Number of pages: 5
ISSN: 1350-4487
eISSN: 1879-0925
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
The scintillation properties of Lu3Al5O12: Pr3+ (LuAG:Pr) single crystal grown by the Czochralski method with praseodymium concentration of 0.19 mol% were investigated. For a comparison, a good quality Bi4Ge3O12 (BGO) single crystal grown by Bridgman method was also studied. The light yield and energy resolution were measured using photomultiplier tube (XP5200B PMT) readout. Moderate light yield of 15,900 photons per MeV was measured for the LuAG:Pr(0.19%) crystal. For 662 keV gamma rays (137Cs source), an energy resolution of 6.5% obtained for LuAG:Pr(0.19%) is much better than that of 9.0% obtained for BGO. The light yield non-proportionality and energy resolution versus energy of gamma rays were measured and the intrinsic resolution of the crystals was determined after correcting the measured energy resolution for PMT statistics. The LuAG:Pr(0.19%) showed a good proportionality of the light yield within 5% over the energy range from 1274.5 keV down to 32 keV, which is much better than that of 14% for BGO. The photofraction was determined at 320 and 662 keV for both crystals and compared with the ratio of the cross-sections for the photoelectric effect to the total one calculated using WinXCOM program. ฉ 2011 Elsevier Ltd. All rights reserved. ฉ 2011 Elsevier Ltd. All rights reserved.
Keywords
Light yield, Scintillation detectors
Contact Information