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	1998/09
形態種別	論文
査読	査読あり
標題	On the utilization of high Z materials as a plasma facing component
執筆形態	共著・編著（代表編著を除く）
掲載誌名	FUSION ENGINEERING AND DESIGN
掲載区分	国外
出版社・発行元	ELSEVIER SCIENCE SA
巻・号・頁	39-40,pp.275-285
国際共著	国際共著
著者・共著者	T Tanabe,M Akiba,Y Ueda,K Ohya,M Wada,Philipps, V
概要	This paper summarizes recent results on high Z performance as PFM in tokamak machines and remarks upon subjects in research and development of high Z PFC referring basic experiments such as high heat load test and surface physics data base (sputtering, reflection, etc.). The dangerous behavior of high Z PFM is the possible accumulation of high Z impurities in the plasma core and accompanying plasma collapse due to their high radiation. However, recent experiments in Alcator-C Mod, TEXTOR and USDEX-U, which employ high Z materials as a divertor target or a limiter, have shown that this occurred only under special conditions. The accumulation of high Z has been observed mainly in ohmic heated TEXTOR plasma. Such accumulation is, however, not necessarily connected with the released high Z impurities from the limiter but is very likely controlled by the impurity transport in the plasma.
DOI	10.1016/S0920-3796(98)00206-3
ISSN	0920-3796
NAID	10024978703