کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4921426 1429343 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
H/He irradiation on tungsten exposed to ELM-like thermal shocks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
H/He irradiation on tungsten exposed to ELM-like thermal shocks
چکیده انگلیسی
ELM-like thermal shocks and H/He particle exposure were subsequently applied on tungsten samples. Polished test specimens underwent in the JUDITH 1 electron beam facility 100 transient thermal events with a duration of 1 ms. The absorbed heat flux was 0.4 GW m−2 and 1.5 GW m−2, which is above the material's damage threshold. These experiments were done at room temperature and with the samples heated to 400 °C base temperature. Depending on the loading conditions the test specimens have either a crack network or showed surface roughening. The samples were then loaded in the GLADIS facility at different surface temperatures with a mixed H/He beam with a flux of 3.7 × 1021 m−2 s−1. Post-mortem analysis showed that the roughened surface did not alter the H/He induced surface modifications. In contrast to that on the test specimens that exhibited crack formation, phenomena such as bubble creation along the crack edge, formation of a shallow layer of nano-structures covering the crack opening, and the emerging of a porous structure which partially fills the crack are observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volumes 109–111, Part A, 1 November 2016, Pages 169-174
نویسندگان
, , , , , , , , , ,