Fission products behaviour in UO2 submitted to nuclear severe accident conditions

被引：1
|
作者：
Geiger, E. [1 ]
Bes, R. [2 ]
Martin, P. [3 ]
Pontillon, Y. [1 ]
Solari, P. L. [4 ]
Salome, M. [5 ]
机构：
[1] CEA DEN CAD DEC SA3C LAMIR, St Paul Les Durance, France
[2] Aalto Univ, Dept Appl Phys, Espoo, Finland
[3] CEA DEN MAR DTEC SECA LCC, Bagnols Sur Ceze, France
[4] Soleil Synchrotron, Paris, France
[5] ESRF Synchrotron, Grenoble, France
来源：
16TH INTERNATIONAL CONFERENCE ON X-RAY ABSORPTION FINE STRUCTURE (XAFS16) | 2016年 / 712卷
关键词：
D O I：
10.1088/1742-6596/712/1/012098
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The objective of this work was to study the molybdenum chemistry in UO2 based materials, known as SIMFUELS. These materials could be used as an alternative to irradiated nuclear fuels in the study of fission products behaviour during a nuclear severe accident. UO2 samples doped with 12 stable isotopes of fission products were submitted to annealing tests in conditions representative to intermediate steps of severe accidents. Samples were characterized by SEM-EDS and XAS. It was found that Mo chemistry seems to be more complex than what is normally estimated by thermodynamic calculations: XAS spectra indicate the presence of Mo species such as metallic Mo, MoO2, MoO3 and Cs2MoO4.
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页数：4
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