Title :
CeBr/sub 3/ scintillators for gamma-ray spectroscopy
Author :
Shah, Kanai S. ; Glodo, Jaroslaw ; Higgins, William ; Van Loef, Edgar V D ; Moses, William W. ; Derenzo, Stephen E. ; Weber, Marvin J.
Author_Institution :
Radiat. Monitoring Devices Inc., Watertown, MA
Abstract :
In this paper, we report on a new scintillator, cerium bromide (CeBr3), for gamma-ray spectroscopy. Crystals of this scintillator have been grown using Bridgman process. In CeBr3, Ce3+ is an intrinsic constituent as well as a luminescence center for the scintillation process, has high light output (~68,000 photons/MeV) and fast decay constant (~17 ns). Furthermore, it shows excellent energy resolution for gamma-ray detection. For example, energy resolution of <4% (FWHM) has been achieved using this scintillator for 662 keV photons (137Cs source) at room temperature. High timing resolution (>200 ps - FWHM) has been recorded with CeBr3-PMT (photomultiplier tubes) and BaF2-PMT detectors operating in coincidence using 511 keV positron annihilation gamma-ray pairs. Potential applications of this material are addressed
Keywords :
gamma-ray detection; gamma-ray spectroscopy; photomultipliers; solid scintillation detectors; 137Cs source; BaF2-PMT detectors; Bridgman process; Ce3+; CeBr3 scintillators; CeBr3-PMT; cerium bromide; energy resolution; fast decay constant; gamma-ray detection; gamma-ray spectroscopy; luminescence center; photomultiplier tubes; positron annihilation gamma-ray pairs; scintillation process; timing resolution; Cerium; Energy resolution; Gamma ray detection; Gamma ray detectors; Luminescence; Photonic crystals; Solid scintillation detectors; Spectroscopy; Temperature; Timing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1466835
