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In OH plasma the additional radiation due to Mo impurities increased with line averaged density bar{ne}. Beyond bar{ne} of about 3x10^19m^-3, the central radiation increased strongly with time and a hollow temperature profile appeared. In contrast, Mo impurity radiation decreased with bar{ne} in NBI (co-injection) plasma and no clear Mo accumulation in the plasma center was observed. However, when the edge plasma was cooled by neon injection in NBI plasma, the Mo concentration in the plasma center substantially increased. The Mo flux from the limiter showed no remarkable change during the OH and NBI density scan or with neon cooling. 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Effects of Impurities Released from High Z Test Limiter on Plasma Performance in TEXTOR
http://hdl.handle.net/10655/3178
http://hdl.handle.net/10655/317822151a89-7c5c-470f-bf13-b404f0b2637f
Item type | 研究報告書 / Research Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Effects of Impurities Released from High Z Test Limiter on Plasma Performance in TEXTOR | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | TEXTOR plasma facing materials | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | High Z materials | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | molybdenum | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | tungsten | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | limiter | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | impurity behavior | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | neon cooling | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
"Ueda, Y.
× "Ueda, Y.× Tanabe, T.× Philipps, V.× Konen, L.× Pospieszczyk, A.× Samm, U.× Schweer, B.× Unterberg, B.× Wada, M.× Hawkes, N.× Noda, N." |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "To investigate the feasibility of high Z metals as plasma facing materials, a Mo test limiter was inserted into the TEXTOR edge plasma and Mo content in the core plasma and its flux from the limiter have been observed. In OH plasma the additional radiation due to Mo impurities increased with line averaged density bar{ne}. Beyond bar{ne} of about 3x10^19m^-3, the central radiation increased strongly with time and a hollow temperature profile appeared. In contrast, Mo impurity radiation decreased with bar{ne} in NBI (co-injection) plasma and no clear Mo accumulation in the plasma center was observed. However, when the edge plasma was cooled by neon injection in NBI plasma, the Mo concentration in the plasma center substantially increased. The Mo flux from the limiter showed no remarkable change during the OH and NBI density scan or with neon cooling. The possible reasons for the Mo behavior in the core plasma are discussed." | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1994-08-01 |
|||||
報告書番号 | ||||||
NIFS-293 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |