Spherical cauliflower-like carbon dust formed by interaction between deuterium plasma and graphite target and its internal structure

N. Ohno, M. Yoshimi, M. Tokitani, S. Takamura, Kazutoshi Tokunaga, N. Yoshida

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Simulated experiments to produce carbon dust particles with cauliflower structure have been performed in a liner plasma device, NAGDIS-II by exposing high density deuterium plasma to a graphite sample (IG-430U). Formation of carbon dust depends on the surface temperature and the incident ion energy. At a surface temperature 600-700 K, a lot of isolated spherical dust particles are observed on the graphite target. The internal structure of an isolated dust particle was observed with Focused Ion Beam (FIB) system and Transmission Electron Microscope (TEM) in detail. FIB analysis clearly shows there exist honey-combed cell structure with thin carbon walls in the dust particle and the dust particle grows from the graphite surface. TEM image also shows that the dust particle is made of amorphous carbon with crystallized grains with diameters of 10-50 nm.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalJournal of Nuclear Materials
Volume390-391
Issue number1
DOIs
Publication statusPublished - Jun 15 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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