Exposures of EU W-CFC combined targets with QSPA Kh-50 plasma streams simulating ITER ELMs

• Дата: 2009
• Автори: Makhlaj, V. A., Garkusha, I.E., Linke, J., Pintsuk, G., Tereshin, V.I., Bandura, A.N., Chebotarev, V.V., Staltsov, V.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2009
• Назва видання: Вопросы атомной науки и техники
• Теми: ИТЭР и приложения для термоядерного реактора
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/88223
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Exposures of EU W-CFC combined targets with QSPA Kh-50 plasma streams simulating ITER ELMs / V. A. Makhlaj, I.E. Garkusha, J. Linke, G. Pintsuk, V.I. Tereshin, A.N. Bandura, V.V. Chebotarev, V.V. Staltsov // Вопросы атомной науки и техники. — 2009. — № 1. — С. 58-60. — Бібліогр.: 5 назв. — англ.

Repeated load tests of special combined W-CFC samples were performed with QSPA plasma streams either resulting in strong melting of W surface layer or below the melting, but above the cracking threshold. Experiments show that in result of target exposures with heat load of 0.4 MJ/m2 (no melting) only cracks formation was found on both tungsten and CFC surfaces. It is obtained that enhanced evaporation of CFC results in additional shielding of tungsten surface by C cloud and protects W surface from evaporation even for essentially increased energy density in impacting plasma. Exposures of combined target with heat loads of 0.82 MJ/m2 resulted in strong melting of tungsten. Meshes of macro-cracks and micro-cracks as well as ripple structures are appeared on the resolidified surface.