Study of plasma-surface interaction at the GOL-3 facility

A. A. Shoshin, A. S. Arakcheev, A. V. Arzhannikov, A. V. Burdakov, I. A. Ivanov, A. A. Kasatov, K. N. Kuklin, S. V. Polosatkin, V. V. Postupaev, S. L. Sinitsky, A. A. Vasilyev, L. N. Vyacheslavov

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The review presents experimental studies of plasma-surface interaction and materials behavior under plasma loads done in the multiple-mirror trap of the GOL-3 facility. In the experiments for the PSI, the energy density in the extracted plasma stream varies from 0.5 to 30 MJ/m2. Parameters of near-surface plasma measured by a set of diagnostics are reviewed. Surface patterns of targets exposed to the plasma are analyzed. The erosion depth depends on the energy loads—it rises from 0 to 600 μm at 0.5 and 30 MJ/m2, correspondingly. Cracking and evolution of graphite and tungsten surface morphology are discussed. The enthalpy of brittle destruction of graphite (10 kJ/g), which determines the threshold of bulk damage of targets irradiated with a charged-particle flux with large penetration depth, was determined. Comparison of different facilities for PSI studies are presented. Heat flux play a key role to the target surface erosion.

Original languageEnglish
Pages (from-to)157-179
Number of pages23
JournalFusion Engineering and Design
Volume114
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • First wall
  • Graphite
  • Plasma diagnostics
  • Plasma-wall interaction
  • Pulsed plasma load
  • Surface modification
  • Tungsten
  • RADIATION CENTER
  • RELATIVISTIC ELECTRON-BEAM
  • SIBERIAN SYNCHROTRON
  • FACING COMPONENTS
  • MULTIPLE-MIRROR TRAP
  • MULTIMIRROR TRAP GOL-3
  • HOT PLASMA
  • TUNGSTEN SURFACE
  • TRANSIENT HEAT LOADS
  • DUST PARTICLES

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