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- W3003642025 endingPage "117063" @default.
- W3003642025 startingPage "117063" @default.
- W3003642025 abstract "Abstract The cerium (Ce)-doped optical fiber materials show great applications in smart lighting, fiber laser, and high-energy ray and particle detection. A major challenge is the efficient prevention of Ce3+ oxidized to Ce4+ ions. Here we report the CO2-laser-heated drawing method for fabricating Ce:YAG derived scintillating optical fiber with a concentration of Ce ions (0.21 wt%), and the effective atomic number is 25.4. The estimated ratio of Ce4+/ΣCe is 37% in the raw YAG ceramics, which can be effectively reduced to 3% in the fiber core because of the negative oxygen atmosphere during the fiber drawing process and the formation of non-bridging oxygen. The result is confirmed by the optical absorption spectrum, X-ray absorption fine structure spectra (XAFS), and Raman spectra. These induce a strong emission peak at 401 nm under the X-ray excitation. Moreover, the normalized integral scintillation efficiency of the Ce:YAG derived fiber is up to ~43% of that of Bi4Ge3O12 (BGO) scintillating crystal. The Ce:YAG derived optical fiber is believed to be a promising candidate for scintillators in remote fiber-optic radiation detection applications." @default.
- W3003642025 created "2020-02-07" @default.
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- W3003642025 date "2020-05-01" @default.
- W3003642025 modified "2023-10-18" @default.
- W3003642025 title "Improved scintillating properties in Ce:YAG derived silica fiber with the reduction from Ce4+ to Ce3+ ions" @default.
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- W3003642025 doi "https://doi.org/10.1016/j.jlumin.2020.117063" @default.
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