1D kinetic modelling of the JET SOL with tungsten divertor

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1D kinetic modelling of the JET SOL with tungsten divertor. / Tskhakaya, D.; Groth, M.; Contributors, JET EFDA.

In: Journal of Nuclear Materials, Vol. 438, No. Supplement, 07.2013, p. 522-525.

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Tskhakaya, D. ; Groth, M. ; Contributors, JET EFDA. / 1D kinetic modelling of the JET SOL with tungsten divertor. In: Journal of Nuclear Materials. 2013 ; Vol. 438, No. Supplement. pp. 522-525.

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@article{2a6cf940fc594864944275ca4c7a65fc,
title = "1D kinetic modelling of the JET SOL with tungsten divertor",
abstract = "In this work a fully kinetic model of the JET SOL with tungsten divertor plates has been developed. It includes the dynamics of main-ions (D+) and electrons, the neutrals (D, C, W) and the impurity particles (C+m, W+n). Our simulations show extremely low concentration of W impurity. We identify two reasons which are responsible for this effect: (1) for low temperature divertor plasma the energy of most of the main-ions and the impurities in a low-ionization state impinging the divertor plates is below the W-sputtering threshold energy; (2) with increasing temperature the W-sputtering increases, but the potential drop across the divertor plasma increases too, so that most of the W ions are reabsorbed at the divertors.",
keywords = "n/a, n/a",
author = "D. Tskhakaya and M. Groth and Contributors, {JET EFDA}",
year = "2013",
month = "7",
doi = "10.1016/j.jnucmat.2013.01.108",
language = "English",
volume = "438",
pages = "522--525",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
number = "Supplement",

}

RIS - Download

TY - JOUR

T1 - 1D kinetic modelling of the JET SOL with tungsten divertor

AU - Tskhakaya, D.

AU - Groth, M.

AU - Contributors, JET EFDA

PY - 2013/7

Y1 - 2013/7

N2 - In this work a fully kinetic model of the JET SOL with tungsten divertor plates has been developed. It includes the dynamics of main-ions (D+) and electrons, the neutrals (D, C, W) and the impurity particles (C+m, W+n). Our simulations show extremely low concentration of W impurity. We identify two reasons which are responsible for this effect: (1) for low temperature divertor plasma the energy of most of the main-ions and the impurities in a low-ionization state impinging the divertor plates is below the W-sputtering threshold energy; (2) with increasing temperature the W-sputtering increases, but the potential drop across the divertor plasma increases too, so that most of the W ions are reabsorbed at the divertors.

AB - In this work a fully kinetic model of the JET SOL with tungsten divertor plates has been developed. It includes the dynamics of main-ions (D+) and electrons, the neutrals (D, C, W) and the impurity particles (C+m, W+n). Our simulations show extremely low concentration of W impurity. We identify two reasons which are responsible for this effect: (1) for low temperature divertor plasma the energy of most of the main-ions and the impurities in a low-ionization state impinging the divertor plates is below the W-sputtering threshold energy; (2) with increasing temperature the W-sputtering increases, but the potential drop across the divertor plasma increases too, so that most of the W ions are reabsorbed at the divertors.

KW - n/a

KW - n/a

U2 - 10.1016/j.jnucmat.2013.01.108

DO - 10.1016/j.jnucmat.2013.01.108

M3 - Article

VL - 438

SP - 522

EP - 525

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - Supplement

ER -

ID: 961992