Ce 3 + activated LaBr3−xIx: High-light-yield and fast-response mixed halide scintillators | Zendy

Muhammad Danang Birowosuto | Zendy; P. Dorenbos | Zendy; Karl W. Krämer | Zendy; H. U. Güdel | Zendy

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Ce 3 + activated LaBr3−xIx: High-light-yield and fast-response mixed halide scintillators

Author(s) -

Muhammad Danang Birowosuto,

P. Dorenbos,

Karl W. Krämer,

H. U. Güdel

Publication year - 2008

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.2930884

Subject(s) - radioluminescence , scintillation , scintillator , halide , phosphor , yield (engineering) , photon , analytical chemistry (journal) , spectral line , excitation , materials science , physics , chemistry , optics , nuclear physics , inorganic chemistry , chromatography , astronomy , detector , quantum mechanics , metallurgy

Here, we report the scintillation properties of LaBr3?xIx:5%Ce3+ with four different compositions of x, i.e., x = 0.75, 1.5, 2, and 2.25. Radioluminescence spectra reveal a shift of the emission wavelength with the LaBr3 to LaI3 ratio. LaBr1.5I1.5:5%Ce3+ shows the highest scintillation light yield of 58?000?photons/MeV, whereas LaBr0.75I2.25:5%Ce3+ shows the fastest scintillation decay time of 12 ns under 662 keV ?-ray excitation. This decay time is faster than that of 16 ns in LaBr3:Ce3+. The temperature dependence of radioluminescence spectra is presented. The structures and lattice parameters of the materials were determined from powder x-ray diffraction.

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