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The result implies that the modelling of the transport should be reconsidered for low collisionality cases. A computer simulation study of transport in the ergodic region is required for understanding fundamental properties of collisionless ergodized-plasmas, estimating the transport coefficients, and reconstructing the modelling of the transport. In this paper, we report the simulation study of thermal transport in the ergodic region under the assumption of neglecting effects of an electric field, impurities and neutrals. Because of the simulations neglecting interactions with different particle-species and saving the computational time, we treat ions (protons) in our numerical-study of the transport. 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Modelling of Ion Thermal Transport in Ergodic Region of Collisionless Toroidal Plasma
http://hdl.handle.net/10655/2966
http://hdl.handle.net/10655/29664232a803-ece5-4cef-83b9-9ba5ccb22f9c
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 | Modelling of Ion Thermal Transport in Ergodic Region of Collisionless Toroidal Plasma | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | thermal transport | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | diffusion | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ergodic region | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | chaotic field line | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | resonant magnetic perturbation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | collisionless toroidal plasma | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | delta f simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Monte-Carlo method | |||||
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 |
"Kanno, R.
× "Kanno, R.× Nunami, M.× Satake, S.× Takamaru, H.× Okamoto, M.× Ohyabu, N." |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "In recent tokamak experiments it has been found that so-called diffusion theory based on the ""diffusion theory based on the ""diffusion of magnetic field lines"" overstimates the radial energy transport in the ergodic region of the collisionless plasma affected by resonant magnetic perturbations (RMPs), though the RMPs induce chaotic behavior of the magnetic field lines. The result implies that the modelling of the transport should be reconsidered for low collisionality cases. A computer simulation study of transport in the ergodic region is required for understanding fundamental properties of collisionless ergodized-plasmas, estimating the transport coefficients, and reconstructing the modelling of the transport. In this paper, we report the simulation study of thermal transport in the ergodic region under the assumption of neglecting effects of an electric field, impurities and neutrals. Because of the simulations neglecting interactions with different particle-species and saving the computational time, we treat ions (protons) in our numerical-study of the transport. We find that the thermal diffusivity in the ergodic region is extremely small compared to the one predicted by the theory of field-line diffusion and that the diffusivity depends on both the collision frequency and the strength of RMPs even for the collisionless ergodized" | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 2009-09-01 |
|||||
報告書番号 | ||||||
NIFS-957 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |