Abstracts 2005

Abstract of Publication No. 531

M. D. Birowosuto, P. Dorenbos, C. W.E. van Eijk, K. W. Krämer and H. U. Güdel
Scintillation Properties of LuI3:Ce3+-High Light Yield Scintillators
IEEE Trans. Nucl. Sci. 52, 1114-1118 (2005)      Full Text (PDF)      DOI-Link     

Abstract: The scintillation properties of LuI3:Ce3+ (pure, 0.5%, 2%, and 5% Ce3+), a new member of the generation of Ce3+ doped lanthanide trihalide scintillators, are presented. This material has a calculated density of 5.6 g/cm3 and an atomic number Zeff of 60.2. Under optical and X-ray excitation, Ce3+ emission is observed to peak at 472 and 535 nm. A high light yield of 76000 photons per MeV (ph/MeV) was measured for LuI3:2%Ce3+. LuI3:Ce3+ has a nonexponential decay time. The contribution of short decay components (within 50 ns) to the total light yield is around 50%. An energy resolution (full-width half maximum over peak position) for the 662 keV full energy peak of 4.7 0.5% was observed for LuI3:0.5%Ce3+.

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