Details

Autor(en) / Beteiligte

• Shoshin, A.A.
• Arakcheev, A.S.
• Arzhannikov, A.V.
• Burdakov, A.V.
• Huber, A.
• Ivanov, I.A.
• Kuklin, K.N.
• Polosatkin, S.V.
• Postupaev, V.V.
• Sinitsky, S.L.
• Vasilyev, A.A.

Titel

Modification of preheated tungsten surface after irradiation at the GOL-3 facility

Ist Teil von

• Fusion engineering and design, 2016-12, Vol.113, p.66-70

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2016

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• •Preheated tungsten was irradiated at the GOL-3 facility with plasma loads corresponding to the ITER type I ELMs.•The crack pattern and the quantity of bubbles depend on the initial temperatures of the target.•The orientation of major crack networks correlates with the direction of machining of the samples.•Dust impact craters were found. The study is devoted to tungsten surface modification after irradiation at the GOL-3 facility with plasma loads corresponding to the ITER type I ELMs. In order to emulate heating with a steady plasma flux in the ITER divertor, some of the tungsten samples were preheated up to 500°C. It was found out that the behavior of the surface modification (the crack pattern and the number of bubbles) depends on the initial temperature of the targets. While the orientation of major crack networks correlates with the direction of machining of the samples. Afterwards we have observed the process of craters’ formation caused by dust particle impacts.