Deuterium Retention in Plasma Sprayed Tungsten Exposed to Low Energy Deuterium Plasma

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概要

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• Deuterium retention and trapping in tungsten plasma sprayed layers after low energy plasma irradiation was investigated by means of thermal desorption technique. Plasma irradiation at low temperatures (< 650 K) showed the retention and trapping similar to polycrystalline tungsten material. On the other hand, irradiation at high temperatures (> 650 K) showed significant increase of the retention in the plasma sprayed layers contrary to the polycrystalline material. Thermal desorption spectra showed extremely high temperatures of the peak positions which are non-typical for the tungsten materials. The possible reasons for such high deuterium retention in the plasma sprayed layers after irradiation at high temperatures and the possible trapping mechanisms are discussed.

著者

• ZUSHI Hideki

  Research Institute for Applied Mechanics, Kyushu University

• Yoshida Naoaki

  Research Institute For Applied Mechanics Kyushu University

• TANABE Tetsuo

  Interdisciplinary Graduate School of Engineering Science, Kyushu University

• SAKAMOTO Mizuki

  Plasma Research Center, Tsukuba University

• OHYAMA Ryohei

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• RUSINOV Aleksandr

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• HONDA Koichiro

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

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