Study on effects of swift heavy ion irradiation on the crystal structure in CeO2 doped with Gd2O3

被引：18
|
作者：
Tahara, Y. [1 ]
Zhu, B. [1 ]
Kosugi, S. [1 ]
Ishikawa, N. [2 ]
Okamoto, Y. [2 ]
Hori, F. [1 ]
Matsui, T. [1 ]
Iwase, A. [1 ]
机构：
[1] Osaka Prefecture Univ, Dept Mat Sci, Osaka 5998531, Japan
[2] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2011年 / 269卷 / 09期
基金：
日本学术振兴会;
关键词：
CeO2; Gd2O3-doping; Ion irradiation; XRD; EXAFS; ENERGY IONS; UO2;
D O I：
10.1016/j.nimb.2010.12.032
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
To simulate the effects of Gd2O3-doping and high-energy fission products in UO2, Gd2O3-doped CeO2 pellets were irradiated with 200-MeV Xe14+ ions. Doping and irradiation effects were analyzed using X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS). The lattice constant of CeO2 decreases and the local structure is disordered with increased doping levels. However, the irradiation induces an expansion of the lattice and a disordering of atomic arrangement near the Gd atoms. The effects of the irradiation become more pronounced with increasing Gd2O3-dopant levels. Our results are compared with those of a study involving Er2O3-doped CeO2. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：886 / 889
页数：4
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