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

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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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