A neutron scintillator based on transparent nanocrystalline CaF{sub 2}:Eu glass ceramic
- Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6460 (United States)
- Forschungszentrum Jülich GmbH, Jülich 52425 (Germany)
There are no efficient Eu{sup 2+} doped glass neutron scintillators reported due to low doping concentrations of Eu{sup 2+} and the amorphous nature of the glass matrix. In this work, an efficient CaF{sub 2}:Eu glass ceramic neutron scintillator was prepared by forming CaF{sub 2}:Eu nanocrystals in a {sup 6}Li-containing glass matrix. Through appropriate thermal treatments, the scintillation light yield of the transparent glass ceramic was increased by a factor of at least 46 compared to the as-cast amorphous glass. This improvement was attributed to more efficient energy transfer from the CaF{sub 2} crystals to the Eu{sup 2+} emitting centers. Further light yield improvement is expected if the refractive index of the glass matrix can be matched to the CaF{sub 2} crystal.
- OSTI ID:
- 22591577
- Journal Information:
- Applied Physics Letters, Vol. 108, Issue 15; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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