Combined exposures of tungsten by stationary and transient hydrogen plasma heat loads: preliminary results

• Date: 2013
• Main Authors: Makhlaj, V.A., Aksenov, N.N., Byrka, O.V., Garkusha, I.E., Bizyukov, A.A., Bizyukov, I.A., Girka, O.I., Sereda, K.N., Bazdyreva, S.V., Malykhin, S.V., Pugachov, A.T.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2013
• Series: Вопросы атомной науки и техники
• Subjects: ИТЭР и приложения для термоядерного реактора
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/109237
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Combined exposures of tungsten by stationary and transient hydrogen plasma heat loads: preliminary results / V.A. Makhlaj, N.N. Aksenov, O.V. Byrka, I.E. Garkusha, A.A. Bizyukov, I.A. Bizyukov, O.I. Girka, K.N. Sereda, S.V. Bazdyreva, S.V. Malykhin, A.T. Pugachov // Вопросы атомной науки и техники. — 2013. — № 1. — С. 70-72. — Бібліогр.: 9 назв. — англ.

Influence of combined hydrogen plasma exposures on tungsten behavior was studied in QSPA Kh-50 facility and steady-state ion beam system FALCON. Pulsed plasma loads (0.45 MJ/m²) were below the tungsten melting threshold. The influence of addition steady-state heat flux (of 0.43 MW/m² during 900 s) on development of surface damage in tungsten targets was studied. Evolution of residual stresses and lattice spacing were investigated. For combined irradiation faster relaxation of residual stresses occurred. The damage of exposed surface was caused by physical spattering and cracks appearing.