Item type |
研究報告書 / Research Paper(1) |
公開日 |
2010-02-05 |
タイトル |
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言語 |
en |
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タイトル |
New Features of L-H Transition in Limiter H-Modes of JIPP T-IIU |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
L-H Transition |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Edge Localized Modes |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Preceding ELM |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
m=3/n=1 Magnetic Fluctuations |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Edge Radial Electric Field |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Poloidal Rotation |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Resistive Tearing Mode |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Detached Toroidal Current Density Profile |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18ws |
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資源タイプ |
research report |
アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
"Toi, K.
Morita, S.
Kawahata, K.
Ida, K.
Watari, T.
Kumazawa, R.
Ando, A.
Oka, Y.
Ohkubo, K.
Hamada, Y.
Adati, K.
Akiyama, R.
Hidekuma, S.
Hirokura, S.
Kaneko, O.
Kawamoto, T.
Kawasumi, Y.
Kojima, M.
Kuroda, T.
Masai, K.
Narihara, K.
Ogawa, Y.
Okajima, S.
Sakamoto, M.
Sasao, M.
Sato, K.
SATO, K. N.
Seki, T.
Shimpo, F.
Tanahashi, S.
Taniguchi, Y.
Tsuzuki, T."
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
"In limiter H-modes of JIPP T-IIU, a new type of L-H transition preceded by an ELM is observed. The preceding ELM ( pre-ELM ) appears just prior to the L-H transition. This type of transition is usually observed in H-modes of JIPP T-IIU. The L-H transition without the pre-ELM is triggered only in the case when a sufficiently large rapid current ramp down is emploied. In H-modes with constant q(a)~3.5-4.5, coherent magnetic oscillations with m=3 /n=1 destabilized during L-phase are further enhanced at the pre-ELM, and suppressed suddenly at the transition. This mode is situated in the region of the transport barrier. Propagation frequency of the m=3/n=1 mode, which may be affected by plasma mass rotation, rises appreciably ( by ~ 10 % ) during H-phase with frequent ELMs, but remains unchanged for at least 200 mu s after the transition. Behaviours of the m=3/n=1 and m=2/n=1 modes are well explained by quasi-linear resistive tearing mode analysis for modelled toroidal current density profiles slightly detached from the limiter. These experimental results suggest that the transition is controlled by the change of a magnetic field structure relating to the modification of a toroidal current density profile near the edge. The possibility for the development of edge radial electric field as a consequence of the transition is discussed." |
書誌情報 |
en : Research Report NIFS-Series
発行日 1992-09-01
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報告書番号 |
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NIFS-179 |
ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0915-633X |