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A Triggering Mechanism of Fast Crash in Sawtooth Oscillation
http://hdl.handle.net/10655/2953
http://hdl.handle.net/10655/295354d8b65e-35d7-48ab-8324-75f32a8106a9
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 | A Triggering Mechanism of Fast Crash in Sawtooth Oscillation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | tokamak | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sawtooth oscillation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | computer simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | magnetohydrodynamics | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | magnetic reconnection | |||||
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 |
"Watanabe, K.
× "Watanabe, K.× Sato, T." |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "Full-torus, compressible, resistive MHD simulations have been performed to study the mechanism of fast crash in the sawtooth oscillation. The simulation results reveal that the q value, which at first decreases in accordance with current pea,king subject to ohmic heating, starts increasing in the q < l region due to strong excitation of nonlinear modes and becomes flattened. When the q profile is flattened in the q < 1 region, the plasma flow pushes the magnetic surface radially outwards and the poloidal magnetic field lines are driven to reconnect rapidly with each other across the q=1 surface. Consbquently, the central hot plasma is pushed out towards the wall to crash its confinement. It turns out that the m=1 plasma flow induced by the kink instability, rather than the pressure gradient, plays a decisive role in the crash process." | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1992-09-01 |
|||||
報告書番号 | ||||||
NIFS-167 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |