Micron-bubble formation on polycrystal tungsten due to low-energy and high-flux helium plasma exposure

Dai Nishijima, Mitsutaka Miyamoto, Hirotomo Iwakiri, Minyou Ye, Noriyasu Ohno, Kazutoshi Tokunaga, Naoki Yoshida, Shuichi Takamura

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Surface modification of polycrystal tungsten due to low-energy and high-flux helium plasma exposure was investigated. Micron-sized holes and bubbles were formed on the surface at a surface temperature of 2200 K even when the incident ion energy of helium was 10 eV. Hole formation was significantly reduced on the surface when the incident ion energy of helium was around S eV and no surface modification was seen at less than 5 eV. Coalescence of micron-sized helium bubbles was observed in the cross section of a W sample.

Original languageEnglish
Pages (from-to)561-564
Number of pages4
JournalMaterials Transactions
Volume46
Issue number3
DOIs
Publication statusPublished - Mar 2005

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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