Erosion features of tungsten surfaces under combined steady-state and transient plasma loads

• Datum: 2016
• Hauptverfasser: Herashchenko, S.S., Makhlaj, V.A., Girka, O.I., Aksenov, N.N., Bizyukov, I.A., Malykhin, S.V., Surovitskiy, S.V., Sereda, K.N., Bizyukov, A.A.
• Format: Artikel
• Sprache: English
• Veröffentlicht: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2016
• Schriftenreihe: Вопросы атомной науки и техники
• Schlagworte: ITER and fusion reactor aspects
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/115316
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Erosion features of tungsten surfaces under combined steady-state and transient plasma loads / S.S. Herashchenko , V.A. Makhlaj , O.I. Girka , N.N. Aksenov , I.A. Bizyukov , S.V. Malykhin , S.V. Surovitskiy , K.N. Sereda , A.A. Bizyukov // Вопросы атомной науки и техники. — 2016. — № 6. — С. 69-72. — Бібліогр.: 14 назв. — англ.

The paper presents the experimental research on damage of the tungsten surfaces under combined plasma exposures. Steady-state hydrogen exposures (particle flux of 2×10²² m⁻²s⁻¹ , heat flux of 1.7 MW/m² , fluence of 1026 m⁻² , average ion energy of 2 keV) were provided by FALCON ion source. The pulsed plasma loads below the tungsten melting threshold (hydrogen plasma streams with surface heat load of 0.45 MJ/m² and the pulse duration of 0.25 ms) were performed by means of QSPA Kh-50 device. The behavior of structure, sub- structure and stress-state of tungsten samples have been studied after each cycle of pulsed and steady-state plasma loads.