Argonne National Laboratory
Reduced Enrichment for Research and Test Reactors
Nuclear Science and Engineering Division at Argonne
U.S. Department of Energy

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Abstracts and Available Papers Presented at the
1999 International RERTR Meeting

Stable In-reactor Performances at Low Temperature of U-10wt.%Mo Dispersion Fuel Containing Centrifugally Atomized Powder

Ki-Hwan Kim, Jong-Man Park, Chang-Kyu Kim
Korea Atomic Energy Research Institute
Taejon, Korea

G. L. Hofman, M. E. Meyer, J. L. Snelgrove
Argonne National Laboratory
Argonne, Illinois, USA


In order to examine the in-reactor performances of very-high-density dispersion fuels for high flux performance research reactors, U-10wt.%Mo microplates containing centrifugally atomized powder have been irradiated at low temperature.  The U-10wt.%Mo dispersion fuels show stable in-reactor irradiation behaviors even at high burn-up, similar to U3Si2 dispersion fuels. The atomized U-10wt.%Mo fuel particles have a fine, uniform fission gas bubble size distribution.  Moreover, only one third areas of the atomized fuel cross-sections at 70at.% burn-up show fission gas bubble-free zones.  This appears the result of segregation into high Mo and low Mo.

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Ki-Hwan Kim
Korea Atomic Energy Research Institute
P.O. Box 105
Yusong, Taejon, Korea - 305-600

Phone:  82 42 868 2308
Fax:      82 42 868 8346

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Last modified on July 29, 2008 11:33 +0200