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Particle transport with inverted density gradient in peripheral region of tokamak
https://repo.qst.go.jp/records/79258
https://repo.qst.go.jp/records/792589db58226-ff33-4da6-977b-c3a3fb26f6a2
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-03-09 | |||||
| タイトル | ||||||
| タイトル | Particle transport with inverted density gradient in peripheral region of tokamak | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
YAGI, Masatoshi
× YAGI, Masatoshi× MIYATO, Naoaki× TAKIZUKA, Tomonori× KASUYA, Naohiro× SCOTT, Bruce× Yagi, Masatoshi× Miyato, Naoaki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Understanding of particle pinch mechanism in the peripheral region is an important issue to supply D-T fuels for future tokamak reactors. Using a delta-f electromagnetic gyrokinetic simulation code dFEFI, we investigated a local dynamics of particle transport in the case of inverted density gradient. It was shown that in the nonlinear phase, the lower wave number mode becomes dominant, which produces an inward particle flux.In the present work, to understand these simulation results, we revisit the ion-mixing mode model. We find that there exist two unstable modes, namely, the ion-mixing mode and the electron drift wave. The ion-mixing mode is driven by negative compression (slab ITG mode) and nonadiabatic electron response through parallel electron heat conductivity. The toroidal effect is subdominant. In the case of inverted density gradient, the electron drift wave is more destabilized by the nonadiabatic electron response through the parallel electron heat conductivity. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 17th International Workshop on Plasma Edge Theory in Fusion Devices | |||||
| 発表年月日 | ||||||
| 日付 | 2019-08-19 | |||||
| 日付タイプ | Issued | |||||
