High-heat-flux experiment on plasma-facing materials by electron beam irradiation

K. Tokunaga, K. Matsumoto, Y. Miyamoto, T. Muroga, N. Yoshida

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


In order to understand the damage and impurity emission of plasma-facing materials by a long-pulse high-heat-flux loading, a high-heat-flux test simulator with electron beams, which is capable of detecting emission gases and particles, was constructed. High-heat-load experiments were carried out for molybdenum. The surface modification and impurity emission depended on the surface temperature. At a surface temperature of about 1500°C, the surface became uneven after repeated heat loads. This changed the thermal character of the surface layer and the surface became molten. Above the melting point, vapor stream and droplets were generated and intense evaporation occurred.

Original languageEnglish
Pages (from-to)1323-1328
Number of pages6
JournalJournal of Nuclear Materials
Issue numberPART B
Publication statusPublished - Sept 1994

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • General Materials Science
  • Nuclear Energy and Engineering


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