Plasma-facing materials in fusion devices are irradiated by a high particle flux from a dense plasma. Graphite tiles, widely used as plasma-facing materials, were irradiated with a helium plasma of a high flux and low energy; the damage in the graphite-tile target was investigated. Changes in the surface morphology were observed from scanning electron microscopy; the electrical conductivity was decreased from four-probe measurement; the intensity of the graphite disorder peak was increased from Raman spectroscopy.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (Project No. 20110018739 and No. 2012034779).
- Graphite tile
- Helium plasma
- Plasma-facing material
- Radiation-enhanced sublimation
ASJC Scopus subject areas
- General Physics and Astronomy