Experimental study of plasma-surface interaction and material damage relevant to ITER type i ELMs

• Published in: Вопросы атомной науки и техники
• Date: 2006
• Main Authors: Makhlaj, V. A., Bandura, A.N., Byrka, O.V., Chebotarev, V.V., Garkusha, I.E., Garkusha, V.V., Kulik, N.V., Landman, I., Lebedev, S.I., Neklyudov, I.M., Staltsov, V.V., Tereshin, V.I.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2006
• Subjects: ITER and fusion reactor aspects
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/81786
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Experimental study of plasma-surface interaction and material damage relevant to ITER type i ELMs / V. A. Makhlaj, A.N. Bandura, O.V. Byrka, V.V. Chebotarev, I.E. Garkusha, V.V. Garkusha, N.V. Kulik, I. Landman, S.I. Lebedev, I.M. Neklyudov, V.V. Staltsov, V.I. Tereshin // Вопросы атомной науки и техники. — 2006. — № 6. — С. 74-76. — Бібліогр.: 8 назв. — англ.

The paper presents experimental investigations of main features of plasma-surface interaction and energy transfer
 to the material surface in dependence on plasma heat loads. The experiments were performed with QSPA repetitive
 plasma pulses of the duration of 0.25 ms and the energy density up to 2.5 MJ/m2
 . Surface morphology of the targets
 exposed to QSPA plasma screams is analyzed. Relative contribution of the Lorentz force and plasma pressure gradient
 to the resulting surface profile is discussed. Development of cracking on the tungsten surface and swelling of the
 surface are found to be in strong dependence on initial temperature of the target.