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Particle Simulation Study of Collisionless Driven Reconnection in a Sheared Magnetic Field
http://hdl.handle.net/10655/2744
http://hdl.handle.net/10655/27447dac611b-345f-49e4-b4ec-f123a18f169c
名前 / ファイル | ライセンス | アクション |
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NIFS-433.pdf (1.8 MB)
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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 | Particle Simulation Study of Collisionless Driven Reconnection in a Sheared Magnetic Field | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | driven magnetic reconnection | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sheared magnetic field | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | collisionless plasma | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | particle simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | energy conversion | |||||
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 |
Horiuchi, R.
× Horiuchi, R.× Sato, T. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Nonlinear development of collisionless driven reconnection and the consequent energy conversion process between the field and particles in a sheared magnetic field are investigated by means of a two-and-a-half-dimensional particle simulation. Magnetic reconnection takes place in two steps irrespective of a longitudinal magnetic field, but the growth rate of reconnection field varies in proportion to the E x B drift velocity at an input boundary. It is clearly observed that the triggering mechanism of collisionless driven reconnection for the fast growing phase changes from an electron meandering dominance in a weak longitudinal field to an electron inertia dominance in a strong field. The electron acceleration and heating take place in the reconnection area under the influence of reconnection electric field, while the electron energy is converted to the ion energy through the action of electrostatic (ambipolar) field excited by magnetic compression in the downstream. It is also found that, in the presence of a longitudinal magnetic field, the electron acceleration by the reconnection field takes place effectively and the generated force-free current is maintained for a long period while forming an asymmetric spatial profile of current layer. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1996-08-01 |
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報告書番号 | ||||||
NIFS-433 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |