کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6743140 1429324 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of nitrogen pre-irradiation at different temperatures on surface blistering and deuterium retention in tungsten
ترجمه فارسی عنوان
تاثیر پیش از تابش نیتروژن در دماهای مختلف بر روی سطح تاول زدن و نگهداری دایتریوم در تنگستن
کلمات کلیدی
نیتروژن، تنگستن، سطح بالینی، احتباس دوتریوم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Nitrogen seeding is considered to be used to reduce the power load onto tungsten divertor armors in tokamaks. Consequently, plasma-material interactions will be affected by seeded nitrogen impurities. The influence of nitrogen pre-irradiation on deuterium induced blistering and deuterium retention in rolled tungsten has been investigated at different pre-irradiation temperatures in the linear plasma device STEP with ion flux >1021 m−2 s−1. Commercially rolled W samples were sequentially exposed to nitrogen plasma (380 K and 470 K) and deuterium plasma (510 K). Surface observations show that nitrogen pre-irradiation suppresses deuterium-induced surface blistering. Thermal desorption spectroscopy measurements indicate that deuterium retention in the rolled tungsten is reduced due to nitrogen pre-irradiation, and it significantly changes with the pre-irradiation temperature. These phenomena are supposed to be related to the formation and change of WNxs at different temperatures which is validated by X-ray photoelectron spectroscopy analyses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 129, April 2018, Pages 1-5
نویسندگان
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