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ヤギュウ ミツヨシ
YAGYU Mitsuyoshi
柳生 光義 所属 ノートルダム清心女子大学 情報デザイン学部 情報デザイン学科 職種 助教 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2023/04/20 |
| 形態種別 | 研究論文（学術雑誌） |
| 査読 | 査読あり |
| 標題 | Destabilization mechanism of the collisional microtearing mode in magnetized slab plasmas |
| 執筆形態 | 共著 |
| 掲載誌名 | Plasma Physics and Controlled Fusion |
| 掲載区分 | 国外 |
| 出版社・発行元 | IOP Publishing |
| 巻・号・頁 | 6(65),pp.065003 |
| 担当区分 | 筆頭著者 |
| 著者・共著者 | Mitsuyoshi Yagyu,Ryusuke Numata |
| 概要 | Abstract
The destabilization mechanism of the collisional microtearing mode driven by an electron temperature gradient is studied using theoretical analyses and gyrokinetic simulations including a comprehensive collision model, in magnetized slab plasmas. The essential destabilization mechanism of the microtearing mode is the lag of the parallel inductive electric field behind the magnetic field owing to the time-dependent thermal force and inertia force induced by the velocity-dependent electron--ion collisions. Quantitative measurements of the collision effects enable us to identify the unstable regime against collisionality and reveal the relevance of the collisional microtearing mode with existing toroidal experiments. A nonlinear simulation demonstrates that the microtearing mode does not drive magnetic reconnection with the explosive release and conversion of the magnetic energy. |
| DOI | 10.1088/1361-6587/accbeb |
| ISSN | 0741-3335/1361-6587 |
| PermalinkURL | https://iopscience.iop.org/article/10.1088/1361-6587/accbeb |
| researchmap用URL | https://iopscience.iop.org/article/10.1088/1361-6587/accbeb/pdf |