ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2011/12
形態種別	論文
査読	査読あり
標題	Numerical simulations of tungsten melt layer erosion caused by J x B force at TEXTOR
執筆形態	共著・編著（代表編著を除く）
掲載誌名	PHYSICA SCRIPTA
掲載区分	国外
出版社・発行元	IOP PUBLISHING LTD
巻・号・頁	T145
国際共著	国際共著
著者・共著者	B. Bazylev,Yu Igitkhanov,J. W. Coenen,V. Philipps,Y. Ueda
概要	Tungsten, in the form of a macrobrush, is seen as one of the candidate materials for the ITER divertor. The melting of tungsten, melt motion and melt splashing are expected to be the main mechanisms of surface damage, which determines the lifetime of plasma-facing components. Experiments with long-time plasma action at the metallic surface in a strong magnetic field demonstrate that the J x B force generated by thermo-emission electrons dominates in the acceleration of the melt layer and leads to high target damage. In this paper, numerical simulations of tungsten target damage caused by the long-time plasma heat loads supporting the TEXTOR experiments are performed by the MEMOS code. The calculated tungsten target damage is in good agreement with the target damage observed in the TEXTOR experiments, which allows projections of surface damage to be made at ITER and DEMO conditions.
DOI	10.1088/0031-8949/2011/T145/014054
ISSN	0031-8949