1. Comparison of Lu0.7Y0.3AP:Ce and Bi4Ge3O12 Scintillators in Gamma Ray Spectrometry
- Author
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Akapong Phunpueok, Bing Kun Yu, Pichet Limsuwan, Weerapong Chewpraditkul, and Chalerm Wanarak
- Subjects
Physics ,Scintillation ,Photomultiplier ,Photon ,Yield (chemistry) ,Resolution (electron density) ,Radiochemistry ,General Engineering ,Gamma ray ,Scintillator ,Gamma ray spectrometry - Abstract
The scintillation response of Lu0.7Y0.3AP:Ce and Bi4Ge3O12 scintillation crystals have been compared using photomultiplier tube readout for photon energies ranging from 22.1 to 1274.5 keV. Lu0.7Y0.3AP:Ce showed a light yield non-proportionality of about 20% upon lowering energy from 1,274.5 to 22.1 keV, which is better than that of about 39% obtained for Bi4Ge3O12. Lu0.7Y0.3AP:Ce showed the light yield of 13,400 ph/MeV and energy resolution of about 8 % for 662 keV gamma rays from a 137Cs source. The photofraction of Bi4Ge3O12 is better than that of Lu0.7Y0.3AP:Ce. The intrinsic resolution of the crystals versus energy of gamma rays has been determined after correcting the measured energy resolution for photomultiplier tube statistics.
- Published
- 2011
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