Irradiation defects in UO2 leached in oxidizing water: An in-situ Raman study

被引：4
|
作者：
Mohun, R. [1 ]
Desgranges, L. [1 ]
Simon, P. [2 ,3 ]
Canizares, A. [2 ,3 ]
Raimboux, N. [2 ,3 ]
Omnee, R. [2 ,3 ]
Jegou, C. [4 ]
Miro, S. [4 ]
机构：
[1] Ctr Cadarache, CEA DEN DEC SESC, F-13108 St Paul Les Durance, France
[2] CNRS, UPR 3079 CEMHTI, F-45071 Orleans, France
[3] Univ Orleans, F-45071 Orleans, France
[4] Ctr Marcoule, CEA, DEN DTCD, BP 17171, F-30207 Bagnols Sur Ceze, France
来源：
ATALANTE 2016 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR SUSTAINABLE FUEL CYCLES | 2016年 / 21卷
关键词：
Irradiation defects; Raman spectroscopy; aerated medium; studtite; ALPHA-RADIOLYSIS; URANIUM-DIOXIDE; NUCLEAR-FUEL; DISSOLUTION; SPECTROSCOPY; CORROSION; PH; PEROXIDE; SPECTRUM; MATRIX;
D O I：
10.1016/j.proche.2016.10.046
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In this study, the behavior of irradiation induced defects in UO2 in a specific oxidizing water environment was investigated under alpha irradiation. Raman spectroscopy was used to measure the formation kinetics of irradiation defects in UO2 when exposed to an aerated medium. The acquired data were then compared with a reference UO2/(Ar+H-2) system. The results revealed that the presence of either aerated deionized water or reducing environment modifies the formation kinetics of irradiation defects. In addition, the precipitation of the studtite phase is also observed during the leaching experiment and water chemical analysis showed that the dissolution of UO2 proceeds without the formation of an oxidized UO2+x.layer. (C) 2016 The Authors. Published by Elsevier B.V.
引用
收藏
页码：326 / 333
页数：8
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