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Neutron-Sensitive Fibers Nuclear and Optical Properties. Moderator. Fast neutrons are thermalized. Ce 3+. Thermal neutron capture by 6 Li. . Ce 3+. 3 H. Ce 3+. Alpha particle and Triton are produced. 6 Li. Triton particle excites Ce 3+. Ce 3+ fluoresces. Thermal Neutron.
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Neutron-Sensitive FibersNuclear and Optical Properties Moderator • Fast neutrons are thermalized Ce3+ • Thermal neutron capture by 6Li Ce3+ 3H Ce3+ • Alpha particle and Triton are produced 6Li • Triton particle excites Ce3+ • Ce3+ fluoresces Thermal Neutron • Light guided to PMTs