1D kinetic modelling of the JET SOL with tungsten divertor plates.
J Nucl Mater
; 438(Suppl): S522-S525, 2013 Jul.
Article
em En
| MEDLINE
| ID: mdl-30976129
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Nucl Mater
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Áustria