Plasma and Fusion Research

Volume 6, 1202005 (2011)

Rapid Communications

Recovery of Tungsten Surface with Fiber-Form Nanostructure by the Argon Plasma Irradiation at a High Surface Temperature

Shuichi TAKAMURA and Takanori MIYAMOTO

: Faculty of Engineering, Aichi Institute of Technology, Toyota 470-0392, Japan

(Received 19 December 2010 / Accepted 26 December 2010 / Published 8 February 2011)

Abstract

One of the serious concerns for tungsten materials in fusion devices is the radiation defects caused by helium plasma irradiation, while the helium is one of fusion products. Fiber-formed nanostructure is worried to have a possible weakness against the plasma heat flux and may destroy the reflectivity as an optical mirror. In this communication an interesting method for a recovery of such a tungsten surface is shown.

Keywords

plasma-facing material, tungsten surface, nanostructure, recovery of surface flatness, helium defect, argon plasma

DOI: 10.1585/pfr.6.1202005

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This paper may be cited as follows:

Shuichi TAKAMURA and Takanori MIYAMOTO, Plasma Fusion Res. 6, 1202005 (2011).