Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry

Y. Hatano; K. Yumizuru; S. Koivuranta; J. Likonen; M. Hara; M. Matsuyama; S. Masuzaki; M. Tokitani; N. Asakura; K. Isobe; T. Hayashi; A. Baron-Wiechec; A. Widdowson

doi:10.1088/1402-4896/aa8931

Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry

Y. Hatano, K. Yumizuru, S. Koivuranta, J. Likonen, M. Hara, M. Matsuyama, S. Masuzaki, M. Tokitani, N. Asakura, K. Isobe, T. Hayashi, A. Baron-Wiechec, A. Widdowson

Research output: Contribution to journal › Conference article › peer-review

9 Scopus citations

Abstract

Energy spectra of β-ray induced x-rays from divertor tiles used in ITER-like wall campaigns of the Joint European Torus were measured to examine tritium (T) penetration into tungsten (W) layers. The penetration depth of T evaluated from the intensity ratio of W(Lα) x-rays to W(Mα) x-rays showed clear correlation with poloidal position; the penetration depth at the upper divertor region reached several micrometers, while that at the lower divertor region was less than 500 nm. The deep penetration at the upper part was ascribed to the implantation of high energy T produced by DD fusion reactions. The poloidal distribution of total x-ray intensity indicated higher T retention in the inboard side than the outboard side of the divertor region.

Original language	English
Article number	014014
Journal	Physica Scripta
Volume	2017
Issue number	T170
DOIs	https://doi.org/10.1088/1402-4896/aa8931
State	Published - 1 Dec 2017
Externally published	Yes
Event	16th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2017 - Neuss/Dusseldorf, Germany Duration: 16 May 2017 → 19 May 2017

Keywords

Joint European Torus
divertor
implantation
nuclear fusion
retention
tritium
tungsten

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10.1088/1402-4896/aa8931

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Hatano, Y., Yumizuru, K., Koivuranta, S., Likonen, J., Hara, M., Matsuyama, M., Masuzaki, S., Tokitani, M., Asakura, N., Isobe, K., Hayashi, T., Baron-Wiechec, A., & Widdowson, A. (2017). Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry. Physica Scripta, 2017(T170), Article 014014. https://doi.org/10.1088/1402-4896/aa8931

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title = "Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry",

abstract = "Energy spectra of β-ray induced x-rays from divertor tiles used in ITER-like wall campaigns of the Joint European Torus were measured to examine tritium (T) penetration into tungsten (W) layers. The penetration depth of T evaluated from the intensity ratio of W(Lα) x-rays to W(Mα) x-rays showed clear correlation with poloidal position; the penetration depth at the upper divertor region reached several micrometers, while that at the lower divertor region was less than 500 nm. The deep penetration at the upper part was ascribed to the implantation of high energy T produced by DD fusion reactions. The poloidal distribution of total x-ray intensity indicated higher T retention in the inboard side than the outboard side of the divertor region.",

keywords = "Joint European Torus, divertor, implantation, nuclear fusion, retention, tritium, tungsten",

author = "Y. Hatano and K. Yumizuru and S. Koivuranta and J. Likonen and M. Hara and M. Matsuyama and S. Masuzaki and M. Tokitani and N. Asakura and K. Isobe and T. Hayashi and A. Baron-Wiechec and A. Widdowson",

note = "Publisher Copyright: {\textcopyright} 2017 Culham Centre for Fusion Energy.; 16th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2017 ; Conference date: 16-05-2017 Through 19-05-2017",

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doi = "10.1088/1402-4896/aa8931",

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Hatano, Y, Yumizuru, K, Koivuranta, S, Likonen, J, Hara, M, Matsuyama, M, Masuzaki, S, Tokitani, M, Asakura, N, Isobe, K, Hayashi, T, Baron-Wiechec, A & Widdowson, A 2017, 'Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry', Physica Scripta, vol. 2017, no. T170, 014014. https://doi.org/10.1088/1402-4896/aa8931

TY - JOUR

T1 - Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry

AU - Hatano, Y.

AU - Yumizuru, K.

AU - Koivuranta, S.

AU - Likonen, J.

AU - Hara, M.

AU - Matsuyama, M.

AU - Masuzaki, S.

AU - Tokitani, M.

AU - Asakura, N.

AU - Isobe, K.

AU - Hayashi, T.

AU - Baron-Wiechec, A.

AU - Widdowson, A.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Energy spectra of β-ray induced x-rays from divertor tiles used in ITER-like wall campaigns of the Joint European Torus were measured to examine tritium (T) penetration into tungsten (W) layers. The penetration depth of T evaluated from the intensity ratio of W(Lα) x-rays to W(Mα) x-rays showed clear correlation with poloidal position; the penetration depth at the upper divertor region reached several micrometers, while that at the lower divertor region was less than 500 nm. The deep penetration at the upper part was ascribed to the implantation of high energy T produced by DD fusion reactions. The poloidal distribution of total x-ray intensity indicated higher T retention in the inboard side than the outboard side of the divertor region.

AB - Energy spectra of β-ray induced x-rays from divertor tiles used in ITER-like wall campaigns of the Joint European Torus were measured to examine tritium (T) penetration into tungsten (W) layers. The penetration depth of T evaluated from the intensity ratio of W(Lα) x-rays to W(Mα) x-rays showed clear correlation with poloidal position; the penetration depth at the upper divertor region reached several micrometers, while that at the lower divertor region was less than 500 nm. The deep penetration at the upper part was ascribed to the implantation of high energy T produced by DD fusion reactions. The poloidal distribution of total x-ray intensity indicated higher T retention in the inboard side than the outboard side of the divertor region.

KW - Joint European Torus

KW - divertor

KW - implantation

KW - nuclear fusion

KW - retention

KW - tritium

KW - tungsten

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U2 - 10.1088/1402-4896/aa8931

DO - 10.1088/1402-4896/aa8931

M3 - 会议文章

AN - SCOPUS:85030863791

SN - 0281-1847

VL - 2017

JO - Physica Scripta

JF - Physica Scripta

IS - T170

M1 - 014014

T2 - 16th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2017

Y2 - 16 May 2017 through 19 May 2017

ER -

Tritium analysis of divertor tiles used in JET ITER-like wall campaigns by means of β-ray induced x-ray spectrometry

Abstract

Keywords

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