Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas

A. Kuzmin; H. Zushi; I. Takagi; S. K. Sharma; M. Kobayashi; Y. Hirooka; T. Onchi; K. Hanada; N. Yoshida; K. Nakamura; A. Fujisawa; H. Idei; Y. Nagashima; M. Hasegawa; T. Mutoh; K. Mishra; H. Ohwada

doi:10.1016/j.nme.2017.03.027

Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas

A. Kuzmin, H. Zushi, I. Takagi, S. K. Sharma, M. Kobayashi, Y. Hirooka, T. Onchi, K. Hanada, N. Yoshida, K. Nakamura, A. Fujisawa, H. Idei, Y. Nagashima, M. Hasegawa, T. Mutoh, K. Mishra, H. Ohwada

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Abstract

In order to understand the atomic hydrogen distribution in different kinds of plasma and its influence on the recycling, two kinds of plasmas were used: non-confined annular electron cyclotron resonance (ECR) and confined long duration plasmas. The permeation probes are used to measure directly the atomic hydrogen flux at several poloidal positions. The permeation through metals due to the ion and atom component of the hydrogen flux to the wall is indistinguishable. To estimate the contribution of the ions directly, Langmuir probes were used. The Г_inc profile behind the plasma facing components (PFCs) is almost constant, ∼2 ×10¹⁸ H/s/m².

Original language	English
Pages (from-to)	627-632
Number of pages	6
Journal	Nuclear Materials and Energy
Volume	12
DOIs	https://doi.org/10.1016/j.nme.2017.03.027
Publication status	Published - Aug 2017

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Materials Science (miscellaneous)

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10.1016/j.nme.2017.03.027

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Kuzmin, A., Zushi, H., Takagi, I., Sharma, S. K., Kobayashi, M., Hirooka, Y., Onchi, T., Hanada, K., Yoshida, N., Nakamura, K., Fujisawa, A., Idei, H., Nagashima, Y., Hasegawa, M., Mutoh, T., Mishra, K., & Ohwada, H. (2017). Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas. Nuclear Materials and Energy, 12, 627-632. https://doi.org/10.1016/j.nme.2017.03.027

Kuzmin, A, Zushi, H, Takagi, I, Sharma, SK, Kobayashi, M, Hirooka, Y, Onchi, T , Hanada, K, Yoshida, N, Nakamura, K, Fujisawa, A , Idei, H , Nagashima, Y , Hasegawa, M, Mutoh, T, Mishra, K & Ohwada, H 2017, 'Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas', Nuclear Materials and Energy, vol. 12, pp. 627-632. https://doi.org/10.1016/j.nme.2017.03.027

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title = "Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas",

abstract = "In order to understand the atomic hydrogen distribution in different kinds of plasma and its influence on the recycling, two kinds of plasmas were used: non-confined annular electron cyclotron resonance (ECR) and confined long duration plasmas. The permeation probes are used to measure directly the atomic hydrogen flux at several poloidal positions. The permeation through metals due to the ion and atom component of the hydrogen flux to the wall is indistinguishable. To estimate the contribution of the ions directly, Langmuir probes were used. The Гinc profile behind the plasma facing components (PFCs) is almost constant, ∼2 ×1018 H/s/m2.",

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AU - Kuzmin, A.

AU - Zushi, H.

AU - Takagi, I.

AU - Sharma, S. K.

AU - Kobayashi, M.

AU - Hirooka, Y.

AU - Onchi, T.

AU - Hanada, K.

AU - Yoshida, N.

AU - Nakamura, K.

AU - Fujisawa, A.

AU - Idei, H.

AU - Nagashima, Y.

AU - Hasegawa, M.

AU - Mutoh, T.

AU - Mishra, K.

AU - Ohwada, H.

PY - 2017/8

Y1 - 2017/8

N2 - In order to understand the atomic hydrogen distribution in different kinds of plasma and its influence on the recycling, two kinds of plasmas were used: non-confined annular electron cyclotron resonance (ECR) and confined long duration plasmas. The permeation probes are used to measure directly the atomic hydrogen flux at several poloidal positions. The permeation through metals due to the ion and atom component of the hydrogen flux to the wall is indistinguishable. To estimate the contribution of the ions directly, Langmuir probes were used. The Гinc profile behind the plasma facing components (PFCs) is almost constant, ∼2 ×1018 H/s/m2.

AB - In order to understand the atomic hydrogen distribution in different kinds of plasma and its influence on the recycling, two kinds of plasmas were used: non-confined annular electron cyclotron resonance (ECR) and confined long duration plasmas. The permeation probes are used to measure directly the atomic hydrogen flux at several poloidal positions. The permeation through metals due to the ion and atom component of the hydrogen flux to the wall is indistinguishable. To estimate the contribution of the ions directly, Langmuir probes were used. The Гinc profile behind the plasma facing components (PFCs) is almost constant, ∼2 ×1018 H/s/m2.

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JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas

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