کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7987493 1515278 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantitatively measuring the influence of helium in plasma-exposed tungsten
ترجمه فارسی عنوان
اندازه گیری کم اثر نفوذ هلیم در تنگستن در معرض پلاسما
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
Tungsten samples are exposed to 3He plasma to quantify their helium retention behavior. The retention saturates quickly with helium fluence and increases only slightly from 4.3 × 1019 He/m2 at 773 K, to 7.5 × 1019 He/m2 at 973 K. The helium content increases dramatically to 6.8 × 1020 He/m2 when fuzz is formed on the surface of a sample exposed at 1173 K, but the majority of the retained helium (5.1 × 1020 He/m2) is found to reside below the layer of fuzz tendrils. Additional tungsten samples were exposed to either simultaneous, or sequential, D/He plasma, followed by TDS. Measurements show the majority of the D retained during simultaneous exposures is located in the near surface region of helium nano-bubbles. No deuterium was detected in any of the samples after the heating to 1273 K, but 67% of the helium was released from simultaneously exposed samples, and only 23% of the helium was released from the sequentially exposed samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Materials and Energy - Volume 12, August 2017, Pages 372-378
نویسندگان
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