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Modelling of Density Limit Phenomena in Toroidal Helical Plasmas
http://hdl.handle.net/10655/2500
http://hdl.handle.net/10655/250012a894c7-8579-428d-9948-fe7cb3ae18e5
名前 / ファイル | ライセンス | アクション |
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NIFS-627.pdf (702.3 kB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Modelling of Density Limit Phenomena in Toroidal Helical Plasmas | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | density limit | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | radiation loss | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | anomalous transport | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | L-mode scaling law | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | helical systems | |||||
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 | |||||
著者 |
Itoh, K.
× Itoh, K.× Itoh, S.-I.× Giannone, L. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The physics of density limit phenomena in toroidal helical plasmas based on an analytic point model of toroidal plasmas is discussed. The combined mechanism of the transport and radiation loss of energy is analyzed, and the achievable density is derived. A scaling low of the density limit is discussed. The dependence of the critical density on the heating power, magnetic field, plasma size and safety factor in the case of L-mode energy confinement is explained. The dynamic evolution of the plasma energy and radiation loss is discussed. Assuming a simple model of density evolution, of a sudden loss of density if the temperature becomes lower than critical value, then a limit cycle oscillation is shown to occur. A condition that divides the limit cycyle oscillation and the complete radiation collapse is discussed. This model seems to explain the density limit oscillation that has been observed on the W7-AS stellarator. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 2000-03-01 |
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報告書番号 | ||||||
NIFS-627 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |