کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10147643 | 1646493 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In-situ observation of the dynamic behavior of cascade defect clusters formed by irradiation with high-energy self-ions at 50â¯K in Cu
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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چکیده انگلیسی
We have observed the development of cascade defects formed by irradiation with 400â¯keV Cu+ ions in high-purity Cu at 50â¯K, and demonstrated the one-dimensional motion of freely or sporadically migrating small defect clusters during post annealing, using in-situ electron microscopy. The diffusivity for the back-and-forth one-dimensional motion of the freely migrating clusters during the post annealing at 50â¯K was evaluated based on the random walk theory. The free migration distance during the sporadic 1-D motion of the small clusters decreased with increasing the fluence of irradiated ions, which suggests trapping sites of radiation-induced defects. A significant number of cascade induced defects changed their positions and shapes at 50â¯K, and were annihilated by post annealing at 100 or 150â¯K. The present results for the free or sporadic 1-D motion of small defect clusters have a great impact on the current understanding of defect recoveries in stages ID+E and II for fcc metals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 511, 1 December 2018, Pages 122-127
Journal: Journal of Nuclear Materials - Volume 511, 1 December 2018, Pages 122-127
نویسندگان
K. Ono, M. Miyamoto, K. Yamahaku,