Gamma-Ray Induced Radiation Damage in LaBr3: 5% Ce and LaCl3: 10% Ce Scintillators.

Authors :: 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.
Source :: IEEE Transactions on Nuclear Science; Aug2007 Part 3 of 3, Vol. 54, p1387-1391, 5p, 4 Charts, 8 Graphs
Publication Year :: 2007
Abstract: The effect of high dose <subscript>60</subscript>Co gamma irradiation on photoelectron yield, energy resolution, optical transmission, scintillation time profiles and thermoluminescence glow curves of LaBr<subscript>3</subscript>:5%Ce and LaCl<subscript>3</subscript>:10%Ce crystals has been investigated. Both materials show lower yields and deteriorated resolutions after exposure to a strong <superscript>60</superscript>Co 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. [ABSTRACT FROM AUTHOR]

Subjects :: LUMINESCENCE
THERMOLUMINESCENCE
RADIATION
CRYSTALS
GAMMA rays
SCINTILLATORS

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