Plasma and Fusion Research

Volume 13, 1205084 (2018)

Rapid Communications

Blister Formation on Tungsten Irradiated by 4 MeV Helium Ion Beam in Ordinary Temperature
Yuki UCHIDA, Yui TAKAOKA, Seiki SAITO1), Nobuo SAITO, Tsuneo SUZUKI, Kazumasa TAKAHASHI, Toru SASAKI and Takashi KIKUCHI
Nagaoka University of Technology, Nagaoka 940-2188, Japan
1)
National Institute of Technology, Kushiro College, Kushiro 084-0916, Japan
(Received 7 May 2018 / Accepted 25 May 2018 / Published 10 July 2018)

Abstract

Blistering was observed on surface of polycrystalline tungsten samples irradiated by helium ion beams with 4 MeV kinetic energy in a fluence of 1022 m−2. The helium ion beam was used as the damage source to the tungsten plate, and the surface temperature of tungsten sample was increased up to 345 K by the ion beam irradiation. The surface was modified by the ion beam irradiation, and its maximum height was about 20 μm.

Keywords

high energy helium ion beam, plasma facing material, tungsten, blister

DOI: 10.1585/pfr.13.1205084

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