Dynamics evaluation of hydrogen isotope behavior in tungsten simulating damage distribution

Moeko Nakata, Keisuke Azuma, Akihiro Togari, Qilai Zhou, Mingzhong Zhao, Takeshi Toyama, Yuji Hatano, Naoaki Yoshida, Hideo Watanabe, Masashi Shimada, Dean Buchenauer, Yasuhisa Oya

研究成果: ジャーナルへの寄稿記事

抄録

0.8 MeV and 6 MeV iron (Fe) ions were implanted into tungsten (W) to produce the irradiation damages with the various damage distributions. Thereafter, 1.0 keV deuterium ion (D 2 + ) implantation was performed to evaluate the D retention behavior on damage distribution in W. The experimental results showed that the total D retentions were decreased by increasing the damage concentration introduced near the surface region by 0.8 MeV Fe ion implantation. The retention of D trapped by vacancy clusters and voids, which would be the stable trapping sites with higher trapping energies, were reduced, suggesting that the recombination of D atom into D 2 on the W surface was enhanced due to D accumulation near the surface region. It can be said that the hydrogen retention behavior in PFMs will be controlled by the damage distribution near the surface.

元の言語英語
ジャーナルFusion Engineering and Design
DOI
出版物ステータス出版済み - 1 1 2019

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Tungsten
Isotopes
Hydrogen
Ion implantation
Ions
Deuterium
Vacancies
Iron
Irradiation
Atoms

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

これを引用

Dynamics evaluation of hydrogen isotope behavior in tungsten simulating damage distribution. / Nakata, Moeko; Azuma, Keisuke; Togari, Akihiro; Zhou, Qilai; Zhao, Mingzhong; Toyama, Takeshi; Hatano, Yuji; Yoshida, Naoaki; Watanabe, Hideo; Shimada, Masashi; Buchenauer, Dean; Oya, Yasuhisa.

:: Fusion Engineering and Design, 01.01.2019.

研究成果: ジャーナルへの寄稿記事

Nakata, M, Azuma, K, Togari, A, Zhou, Q, Zhao, M, Toyama, T, Hatano, Y, Yoshida, N, Watanabe, H, Shimada, M, Buchenauer, D & Oya, Y 2019, 'Dynamics evaluation of hydrogen isotope behavior in tungsten simulating damage distribution' Fusion Engineering and Design. https://doi.org/10.1016/j.fusengdes.2019.03.114
Nakata, Moeko ; Azuma, Keisuke ; Togari, Akihiro ; Zhou, Qilai ; Zhao, Mingzhong ; Toyama, Takeshi ; Hatano, Yuji ; Yoshida, Naoaki ; Watanabe, Hideo ; Shimada, Masashi ; Buchenauer, Dean ; Oya, Yasuhisa. / Dynamics evaluation of hydrogen isotope behavior in tungsten simulating damage distribution. :: Fusion Engineering and Design. 2019.
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title = "Dynamics evaluation of hydrogen isotope behavior in tungsten simulating damage distribution",
abstract = "0.8 MeV and 6 MeV iron (Fe) ions were implanted into tungsten (W) to produce the irradiation damages with the various damage distributions. Thereafter, 1.0 keV deuterium ion (D 2 + ) implantation was performed to evaluate the D retention behavior on damage distribution in W. The experimental results showed that the total D retentions were decreased by increasing the damage concentration introduced near the surface region by 0.8 MeV Fe ion implantation. The retention of D trapped by vacancy clusters and voids, which would be the stable trapping sites with higher trapping energies, were reduced, suggesting that the recombination of D atom into D 2 on the W surface was enhanced due to D accumulation near the surface region. It can be said that the hydrogen retention behavior in PFMs will be controlled by the damage distribution near the surface.",
author = "Moeko Nakata and Keisuke Azuma and Akihiro Togari and Qilai Zhou and Mingzhong Zhao and Takeshi Toyama and Yuji Hatano and Naoaki Yoshida and Hideo Watanabe and Masashi Shimada and Dean Buchenauer and Yasuhisa Oya",
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AU - Nakata, Moeko

AU - Azuma, Keisuke

AU - Togari, Akihiro

AU - Zhou, Qilai

AU - Zhao, Mingzhong

AU - Toyama, Takeshi

AU - Hatano, Yuji

AU - Yoshida, Naoaki

AU - Watanabe, Hideo

AU - Shimada, Masashi

AU - Buchenauer, Dean

AU - Oya, Yasuhisa

PY - 2019/1/1

Y1 - 2019/1/1

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AB - 0.8 MeV and 6 MeV iron (Fe) ions were implanted into tungsten (W) to produce the irradiation damages with the various damage distributions. Thereafter, 1.0 keV deuterium ion (D 2 + ) implantation was performed to evaluate the D retention behavior on damage distribution in W. The experimental results showed that the total D retentions were decreased by increasing the damage concentration introduced near the surface region by 0.8 MeV Fe ion implantation. The retention of D trapped by vacancy clusters and voids, which would be the stable trapping sites with higher trapping energies, were reduced, suggesting that the recombination of D atom into D 2 on the W surface was enhanced due to D accumulation near the surface region. It can be said that the hydrogen retention behavior in PFMs will be controlled by the damage distribution near the surface.

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