کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1625025 | 1516420 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular dynamics study on planar clustering of xenon in UO2
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Interatomic potentials of uranium dioxide are investigated on their applicability to model structural stabilities beyond fluorite phase by comparing with ab initio results. A high pressure cotunnite phase and loosely stacking virtual crystal are involved in order to get a primary confidence for large-scale deformation modelings of UO2 under irradiation damages. The behavior of Xe atoms in UO2 fuel is studied with molecular dynamics simulations. Besides the ground state bubble geometry, we find that a planar distribution is also (meta-)stable for xenon under thermodynamic perturbations. The Xe atoms with a planar configuration are in a liquid state at a typical reactor temperature of 1000âK, which presents a modulated layer-structure near the interface with solid UO2. A planar defects loop remains after these Xe atoms are released out.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 457, Issues 1â2, 12 June 2008, Pages 465-471
Journal: Journal of Alloys and Compounds - Volume 457, Issues 1â2, 12 June 2008, Pages 465-471
نویسندگان
H.Y. Geng, Y. Chen, Y. Kaneta, M. Kinoshita,