[Table of Contents]

Plasma and Fusion Research

Volume 5, 039 (2010)

Rapid Communications

Deepening of Floating Potential for Tungsten Target Plate on the way to Nanostructure Formation
Shuichi TAKAMURA, Takanori MIYAMOTO and Noriyasu OHNO1)
Faculty of Engineering, Aichi Institute of Technology, Toyota 470-0392, Japan
1)
Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
(Received 3 September 2010 / Accepted 12 September 2010 / Published 8 October 2010)

Abstract

Deepening of floating potential has been observed on the tungsten target plate immersed in high-density helium plasma with hot electron component on the way to nanostructure formation. The physical mechanism is thought to be a reduction of secondary electron emission from such a complex nano fiber-form structure on the tungsten surface.

Keywords

plasma-facing material, tungsten surface, nanostructure, secondary electron emission, deepening of floating potential

DOI: 10.1585/pfr.5.039

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References

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This paper may be cited as follows:

Shuichi TAKAMURA, Takanori MIYAMOTO and Noriyasu OHNO, Plasma Fusion Res. 5, 039 (2010).