Dust Formation from Arc Spots on Nanostructured Tungsten Surface

Miyuki YAJIMA; Shin KAJITA; Noriyasu OHNO; Suguru MASUZAKI; Naoaki YOSHIDA; Damien U. B. AUSSEMS; Thomas W. MORGAN; Kirill BYSTROV; Hennie van der MEIDEN

doi:10.1585/pfr.15.1205061

Rapid Communications

Dust Formation from Arc Spots on Nanostructured Tungsten Surface

Miyuki YAJIMA, Shin KAJITA, Noriyasu OHNO, Suguru MASUZAKI, Naoaki YOSHIDA, Damien U. B. AUSSEMS, Thomas W. MORGAN, Kirill BYSTROV, Hennie van der MEIDEN

Author information

Miyuki YAJIMA
National Institute for Fusion Science
Shin KAJITA
IMaSS, Nagoya University
Noriyasu OHNO
Graduate School of Engineering, Nagoya University
Suguru MASUZAKI
National Institute for Fusion Science
Naoaki YOSHIDA
Research Institute for Applied Mechanics, Kyushu University
Damien U. B. AUSSEMS
DIFFER - Dutch Institute for Fundamental Energy Research
Thomas W. MORGAN
DIFFER - Dutch Institute for Fundamental Energy Research
Kirill BYSTROV
DIFFER - Dutch Institute for Fundamental Energy Research
Hennie van der MEIDEN
DIFFER - Dutch Institute for Fundamental Energy Research

Keywords: He irradiation, tungsten, arcing, metallic dust

JOURNAL FREE ACCESS

2020 Volume 15 Pages 1205061

DOI https://doi.org/10.1585/pfr.15.1205061

Details

Abstract

Arcing experiments were conducted in the linear plasma device Pilot-PSI, where a pulsed plasma was superimposed to a steady state plasma. The arcing was observed by a fast framing camera, and the sample was analyzed with a transmission electron microscope. Observations of glowing objects released from the sample in response to the arcing and destruction of the fuzzy layer at the edge of the arc trail without significant melting suggested that dust was formed and released from the surface in response to arcing.

Corresponding author

Register with J-STAGE for free!