Labr3:Ce scintillators for gamma ray spectroscopy
In this paper, we report on a relatively new scintillator -LaBr3 for gamma ray spectroscopy. Crystals of this scintillator have beengrown using Bridgman process. This material when doped with cerium hashigh light output (~;60,000 photons/MeV) and fast principal decayconstant (less than 25 ns). Furthermore, it shows excellent energyresolution for gamma-ray detection. Energy resolution of 3.2 percent(FWHM) has been achieved for 662 keV photons (137Cs source) at roomtemperature. High timing resolution (260 ps - FWHM) has been recordedwith LaBr3-PMT and BaF2-PMT detectors operating in coincidence mode using511 keV positron annihilation gamma-ray pairs. Details of itsscintillation properties, and variation of these properties with changingcerium concentration are reported. Potential applications of thismaterial are also addressed.
- Research Organization:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Biological andEnvironmental Research. Medical Sciences Division; US Department ofCommerce Grant BS123456, Public Health Grants P01-HL25840 andR01-CA67911
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 894974
- Report Number(s):
- LBNL--51793; BnR: KP1401030
- Journal Information:
- IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 6pt2 Vol. 50
- Country of Publication:
- United States
- Language:
- English
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