Title :
Gamma-Ray Induced Radiation Damage in LaBr 3:5%Ce and LaCl 3:10%Ce Scintillators
Author :
Drozdowski, W. ; Dorenbos, P. ; Bos, A.J.J. ; Kraft, S. ; Buis, E.-J. ; Maddox, E. ; Owens, A. ; Quarati, F.G.A. ; Dathy, C. ; Ouspenski, V.
Author_Institution :
Delft Univ. of Technol., Delft
Abstract :
The effect of high dose 60Co gamma irradiation on photoelectron yield, energy resolution, optical transmission, scintillation time profiles and thermoluminescence glow curves of LaBr3:5%Ce and LaCl3:10%Ce crystals has been investigated. Both materials show lower yields and deteriorated resolutions after exposure to a strong 60Co source, however their transmission, yield proportionality, scintillation decay, and thermoluminescence remain unaffected. Initial scintillation characteristics can be retrieved neither by spontaneous recovery nor upon heating in vacuum.
Keywords :
cerium; gamma-ray effects; lanthanum compounds; photoelectron spectra; scintillation; scintillation counters; thermoluminescence; LaBr3:Ce - Interface; LaCl3:Ce - Interface; energy resolution; gamma-ray induced radiation damage; optical transmission; photoelectron yield; scintillation decay; scintillation time profiles; scintillator; thermoluminescence glow curves; yield proportionality; Annealing; Crystalline materials; Crystals; Energy resolution; Gamma rays; Optical materials; Optical scattering; Protons; Pulse measurements; Space technology; ${rm LaBr}_{3}{:}{rm Ce}$; ${rm LaCl}_{3}{:}{rm Ce}$; Energy resolution; radiation damage; scintillation yield; scintillator;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2007.902373
