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Information × Registration Number 0222U000031, 0120U102598 , R & D reports Title Features of plasma shielding layers and their effects on erosion characteristics of perspective materials and components for thermonuclear reactor popup.stage_title Head Makhlai Vadym O., Кандидат фізико-математичних наук Registration Date 02-01-2022 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  The interaction of plasma flows generated by a powerful quasi-stationary accelerator QSPA Kh-50 with three-dimensional segmented tungsten monoblocks, as well as tungsten samples produced by additive manufacturing was studied. The energy density in the plasma reached 3 MJ/m2, which is close to the energy values expected in the devertor flows of fusion reactors. The formation of solid and liquid particles was investigated by successive oblique effects of plasma on various selected segmented edges of the structure. It was found that the majority of W droplets are ejected from the sharp leading edge of the target due to the development of instabilities at the plasma-liquid interface. At the same time, the formation of solid dust particles is preferentially explained by cracking during surface cooling after the plasma pulse. The velocity of the particles reached tens of m/s. The maximum particle size reached tens of micrometers. The measurement of the energy absorbed by additive tungsten surfaces is close to the energy absorbed by solid tungsten. The results will be used to improve the design of three-dimensional protective structures as well as to improve numerical codes for predicting damage to plasma-contacting surfaces. Product Description popup.authors AKSYNOV Mykola M BIRKA Oleg V Volkova Yuliia Yevgenievna Harkusha Igor Ye. Garkusha Natalia M. HERASHCHENKO Stanislav Serhiyovych Zhurkina Raisa I. KULIK Mykola V LADIGINA Marina S Lebediev Sergiy I. MARCHENKO Anna K MAKHLAY Vadim O MEERKOVA Tatiana M PANASKO Tamara О. Petrov Yuriy V. Seleznova Nataliia Ye. Skorina Olena V. STALTSOV Valery V Tkachenko Lidiya K. CHEBOTAROV Volodymyr V. Shevchuk Pavlo B. Yakovleva Vitaliya V. popup.nrat_date 2022-03-09 Close