OXYGEN POTENTIAL OF HIGH BURN-UP FAST BREEDER OXIDE FUEL

被引：22
|
作者：
MATZKE, H [1 ]
OTTAVIANI, J [1 ]
PELLOTTIERO, D [1 ]
ROUAULT, J [1 ]
机构：
[1] CEN CADARACHE,CEA,DEPT ETUD COMBUSTIBLES BASE PLUTONIUM,F-13115 ST PAUL DURANCE,FRANCE
来源：
JOURNAL OF NUCLEAR MATERIALS | 1988年 / 160卷 / 2-3期
关键词：
Nuclear Fuels--Mixed Oxides - Oxygen - Radiation Effects;
D O I：
10.1016/0022-3115(88)90041-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxygen potential ΔG(O2) of fast breeder mixed oxide fuel (U0.8Pu0.2)O1.98 irradiated to different burn-ups up to 11 at% has been determined between 900 and 1300 K by measurements of the electromotive force in a galvanic microcell. The oxygen potential increases continuously with burn-up, due to the oxidative nature of fission and due to fission products dissolved in the fuel matrix. Lattice parameter measurements of similar fuel indicate that the fuel with the initial O/M ratio of 1.98 is still substoichiometric even at 7% burn-up. If the lattice parameter measurements are accepted, the increase in ΔG(O2) due to fission products is larger than assumed so far.
引用
收藏
页码：142 / 146
页数：5
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