Title :
Scintillation properties of Eu2+-activated barium fluoroiodide
Author :
Gundiah, Gautam ; Courchesne, Edith Bourret ; Bizarri, Gregory ; Hanrahan, Stephen M. ; Chaudhry, Anurag ; Canning, Andrew ; Moses, WilliamW ; Derenzo, StephenE
Author_Institution :
Life Sci. Div., Lawrence Berkeley Nat. Lab., Berkeley, CA, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
The scintillation properties of powders and single-crystals of BaFI doped with Eu2+ are presented. Single crystals were grown by the vertical Bridgman technique. Under optical and X-ray excitation, the samples exhibit a narrow Eu2+ 5d-4f transition emission centered at 405 nm. The scintillation light output is estimated to be 55,000±5,000 photons/MeV at 662 keV with 85% of the light decaying within 600 ns. An energy resolution of 8.5% full width at half maximum (FWHM) has been achieved using this scintillator for 662 keV excitation (137Cs source) at room temperature.
Keywords :
barium compounds; crystal growth from melt; crystals; doping profiles; europium; powders; scintillation; 137Cs source; BaFI:Eu2+; Eu2+ doped BaFI powders; Eu2+ doped BaFI single crystal; Eu2+-activated barium fluoroiodide; X-ray excitation; electron volt energy 662 keV; optical excitation; scintillation properties; temperature 293 K to 298 K; transition emission; vertical Bridgman technique; wavelength 405 nm; Barium; Canning; Crystalline materials; Energy resolution; Laboratories; Luminescence; National security; Photonic crystals; Powders; Temperature; BaFI; barium fluoroiodide; europium; gamma-ray detection; scintillators;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402265
