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- W2023956977 abstract "Four irradiation experiments for testing the efficiency of fission-product-retaining kernel additives in coated fuel particles are described. The evaluation of the obtained experimental data led to the following results: Alumina-silica kernel additives reduce the inpile release of /sup 90/Sr and /sup 140/Ba from BISO-coated particles at temperatures of about 1200/sup 0/C by two orders of magnitude, and the cesium release from kernels by about one order of magnitude. Effective transport coefficient including all parameters that contribute to kernel release for (Th,U)O/sub 2/ mixed oxide kernels and low-enriched UO/sub 2/ kernels containing 5 wt% alumina-silica additives are given by the equations: log D /SUB k/ /m/sup 2/.s/sup -1/= -36028/T+2.261 (/sup 90/Sr) and log D /SUB k/ /m/sup 2/.s/sup -1/= -29646/T+1.826 ( /SUP 134/137/ Cs). Alumina-silica kernel additives are ineffective for retaining /SUP 110m/ Ag in coated particles. However, an intact silicon carbide interlayer was also found to be ineffective at temperatures > 1200/sup 0/C. The penetration of fission-product-containing eutectic additive melts into the buffer layer during irradiation can be avoided by using additives that consist of alumina and mullite without an excess of silica. Annealing of LASER-failed irradiated particles and results of the irradiation test FRJ2-P20 indicate that the efficiency ofmore » alumina-silica kernel additives is not altered if the coating becomes defective.« less" @default.
- W2023956977 created "2016-06-24" @default.
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- W2023956977 date "1982-01-01" @default.
- W2023956977 modified "2023-09-25" @default.
- W2023956977 title "Irradiation Performance of Coated Fuel Particles with Fission Product Retaining Kernel Additives" @default.
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- W2023956977 doi "https://doi.org/10.13182/nt82-a32882" @default.
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