Title :
LuI3:Ce - a new scintillator for gamma ray spectroscopy
Author :
Shah, K.S. ; Glodo, J. ; Klugerman, M. ; Higgins, W. ; Gupta, T. ; Wong, P. ; Moses, W.W. ; Derenzo, S.E. ; Weber, M.J. ; Dorenbos, P.
Author_Institution :
Radiat. Monitoring Devices, Watertown, MA, USA
Abstract :
In this paper, we report on a new cerium doped, high atomic number scintillator - LuI3:Ce for gamma ray spectroscopy. Crystals of this material have been grown using Bridgman process. LuI3 crystals doped with 0.5 and 5% Ce3+ show high light output (∼50,000 photons/MeV) and fast principal decay constant (23 to 31 ns). The Ce3+ emission peaks at 474 nm. Energy resolution of LuI3:Ce coupled to photomultiplier (PMT) and measured at 662 keV was ∼10% (FWHM). Timing resolution of LuI3-PMT and BaF2-PMT detectors operating in coincidence mode was measured to be 210 ps (FWHM). Potential applications of this scintillator are discussed.
Keywords :
cerium; gamma-ray spectroscopy; lutetium compounds; photomultipliers; scintillation; solid scintillation detectors; 210 ps; 23 to 31 ns; 474 nm; 662 keV; Bridgman process; LuI3:Ce; fast principal decay constant; gamma ray spectroscopy; scintillator; Cerium; Crystalline materials; Energy resolution; Geologic measurements; Photomultipliers; Photonic crystals; Solid scintillation detectors; Spectroscopy; Time measurement; Timing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1351839
