| CeBr3 scintillation crystals offer an alternative to NaI(Tl) crystals for high resolution gamma spectrometry. Above an energy of 200 keV, the resolutio-n is superior to NaI(Tl). CeBr3 scintillation detectors do not suffer from the intrinsic La-138 background typical for Lahalide scintillators. Composition : CeBr3 Density : 5.2 g / cc Maximum emission : 380 nm Decay time (typical) : 18-20 ns Size : up to 102 mm diameter, 152 mm length
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Typical energy resolution ( FWHM) in % :
Energy ( keV) NaI(Tl) CeBr3 30 18 20 60 11 13 81 10 11 122 8.5 8 356 8 5 662 7 4 1332 5 3 2600 4 2
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Intrinsic background in the Ac-227 complex CeBr3 crystals are characterized by a very small intrinsic background due to the presence of Ac-227. This results in a number of peaks between 1500 and 2200 keV. Standard CeBr3 has a count rate of 0.025 c/s/cc; ultra low backgro-und CeBr3 < 0.001 c/s/cc.
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