کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7963514 | 1514146 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Radiation-induced amorphization of Langasite La3Ga5SiO14
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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
Single crystals of Langasite La3Ga5SiO14 (LGS) were irradiated by 1â¯MeV Kr2+ ions at temperature range from 298 to 898 â¯K in order to simulate the damage effect of neutron radiation on Langasite, a candidate sensor material proposed as high temperature and pressure sensors in nuclear reactors. The microstructure evolution of LGS as functions of irradiation dose and temperature was followed by in-situ TEM observation through electron diffraction pattern. LGS is found to be sensitive to ion beam irradiation-induced amorphization from displacive heavy ions with a low critical dose of â¼0.5 ± 0.2 dpa (neutron fluence of (1.6 ± 0.6 )â¯Ãâ¯1019 neutrons/cm2) at room temperature. The critical amorphization temperature, Tc, is determined to be 910 ± 10 â¯K. Under simultaneous ionizing electron (300â¯Â keV, 45â¯Â nA) and displacive heavy ion irradiations (1-MeV Kr2+ and flux of 6.25â¯Ãâ¯1011 ions/cm2·s), LGS displayed greater stability of crystal structure against amorphization, possibly due to the electron radiation-induced recovery of displacive damage by heavy ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 500, March 2018, Pages 50-55
Journal: Journal of Nuclear Materials - Volume 500, March 2018, Pages 50-55
نویسندگان
Tiankai Yao, Fengyuan Lu, Haifeng Zhang, Bowen Gong, Wei Ji, Lei Zuo, Jie Lian,