کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7963518 | 1514146 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sputtering effects on mirrors made of different tungsten grades
ترجمه فارسی عنوان
اثرات لکه بر روی آینه های ساخته شده از انواع مختلف تنگستن
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
چکیده انگلیسی
Because tungsten (W) is used in present fusion devices and it is a reference material for ITER divertor and possible plasma-facing material for DEMO, we strive to understand the response of different W grades to ion bombardment. In this study, we investigated the behavior of mirrors made of four polycrystalline W grades under long-term ion sputtering. Argon (Ar) and deuterium (D) ions extracted from a plasma were used to investigate the effect of projectile mass on surface modification. Depending on the ion fluence, the reflectance measured at normal incidence was very different for different W grades. The lowest degradation rate of the reflectance was measured for the mirror made of recrystallized W. The highest degradation rate was found for one of the ITER-grade W samples. Pre-irradiation of a mirror with 20-MeV W6+ ions, as simulation of neutron irradiation in ITER, had no noticeable influence on reflectance degradation under sputtering with either Ar or D ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 500, March 2018, Pages 56-63
Journal: Journal of Nuclear Materials - Volume 500, March 2018, Pages 56-63
نویسندگان
V.S. Voitsenya, O.V. Ogorodnikova, A.F. Bardamid, V.N. Bondarenko, V.G. Konovalov, P.M. Lytvyn, L. Marot, I.V. Ryzhkov, A.F. Shtan', O.O. Skoryk, S.I. Solodovchenko,