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- W1597859143 abstract "A CaF2:Eu2+/6LiF translucent composite ceramic is a new scintillator for neutron detection. In this material, as in ZnS:Ag/6LiF phosphor, neutrons are absorbed by 6LiF grains, and the scintillation is provided by the complementary grains of CaF2:Eu2+. However unlike phosphors, ceramics have higher packing density and are more translucent. This allows the use of thicker layers with improved detection efficiency (or thinner layers showing better spatial resolution). Better translucency also provides a well-defined neutron photopeak in the energy spectrum. The light output of samples fabricated so far reaches about 25,000 photons per neutron at the neutron photopeak, with a possible maximum up to about 45,000 photons/neutron. The emission (at 425 nm) under neutron excitation decays with a time constant of 590 ns, and there are no significant slower components. Faster decay permits higher count rates and better timing resolution, that is important for spallation neutron sources, where the neutron energy needs to be determined by the time-of-flight techniques. In addition, this material is characterized by a low effective atomic number (16.6) and low refractive indices (1.44/1.39)" @default.
- W1597859143 created "2016-06-24" @default.
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- W1597859143 date "2006-03-21" @default.
- W1597859143 modified "2023-09-22" @default.
- W1597859143 title "A New Ceramic Scintillator for Neutron Detection: CaF/sub 2/:Eu/sup 2+///sup 6/LiF" @default.
- W1597859143 cites W1619308750 @default.
- W1597859143 doi "https://doi.org/10.1109/nssmic.2005.1596218" @default.
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