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タイトル: | Study of Electron Orbits for Formation of Toroidal Closed Flux Surface by ECH |
著者: | Maekawa, Takashi Yoshinaga, Tomokazu Tanaka, Hitoshi https://orcid.org/0000-0002-7169-8624 (unconfirmed) Uchida, Masaki Watanabe, Fumitake |
著者名の別形: | 前川, 孝 |
キーワード: | ECH closed flux surface Electron orbit |
発行日: | 1-Jun-2011 |
出版者: | IOP Publishing |
誌名: | Plasma Science and Technology |
巻: | 13 |
号: | 3 |
開始ページ: | 342 |
終了ページ: | 346 |
抄録: | Electron orbits under the external vertical field (BV) and the self poloidal field of the toroidal plasma current in a toroidal geometry are investigated by using analytic model fields in order to search for the conditions of occurence of appropriate confinement asymmetry of fast electrons along the field lines. This asymmetry efficiently and quickly generates a toroidal current, which may close the field lines in ECH-started plasmas. It is analytically shown that the characteristics of confinement asymmetry depend on the product of the major radius and the strength of the external vertical field. The results suggest that in large devices BV should be lowered and also some artificial means to speed up the pitch angle scattering for the fast electrons at a higher energy range are beneficial to generate the toroidal current in order to close the filed lines. |
著作権等: | © IOP Publishing 2011 This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/143688 |
DOI(出版社版): | 10.1088/1009-0630/13/3/13 |
出現コレクション: | 学術雑誌掲載論文等 |
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