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Theoretical studies of equilibrium beta limit in heliotron plasmas
http://hdl.handle.net/10655/2922
http://hdl.handle.net/10655/29223e4ca6f5-719e-4f1b-b9e8-0c208cd0264c
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 | Theoretical studies of equilibrium beta limit in heliotron plasmas | |||||
言語 | ||||||
言語 | eng | |||||
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 |
"Suzuki, Y.
× "Suzuki, Y.× Watanabe, K. Y.× Sakakibara, S.× Nakajima, N.× Ohyabu, N." |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "In this study, the MHD equilibrium limit of LHD plasmas is studied using a 3D MHD equilibrium calculation code, HINT2, which is an initial value solver based on the relaxation method without the assumption of nested flux surfaces. For finite beta equilibria, flux surfaces become stochastic in the peripheral region. However, though the axis shifts until the conventional limit, the separatrix to limit the equilibrium does not appear. For high beta equilibria, the force balance starts breaking in the stochastic region. To keep the force balance, the pressure gradient in the stochastic region decreases and the fixed profile is reduced. As the result, the volume averaged beta saturates. The beta value, where the force balance starts breaking inside the stochastic region, is proposed as an index of equilibrium beta limit in heliotron plasmas." | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 2008-10-01 |
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報告書番号 | ||||||
NIFS-920 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |