Recovery of Tungsten Surface with Fiber-Form Nanostructure by the Effect of Surface Temperature Increase in Plasmas

Abstract

One of the serious concerns for tungsten materials in fusion devices is the radiation defects caused by helium plasma irradiation since helium is the fusion product. Fiber-formed nanostructure is thought to have a possible weakness against the plasma heat flux and may destroy the reflectivity as an optical mirror. In this paper an interesting method for a recovery of such tungsten surfaces is shown.