Formation of electron-root radial electric field and its effect on thermal transport in LHD high Te plasma

Seikichi Matsuoka, Shinsuke Satake, Hiromi Takahashi, Arimitsu Wakasa, Masayuki Yokoyama, Takeshi Ido, Akihiro Shimizu, Takashi Shimozuma, Sadayoshi Murakami

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

Neoclassical transport analyses have been performed for a high electron temperature LHD plasma with steep temperature gradient using a neoclassical transport simulation code, FORTEC-3D. It is shown that the large positive radial electric field is spontaneously formed at the core along with the increase in the electron temperature, while the neoclassical heat diffusivity remains almost unchanged. This indicates that the 1/-type increase expected in the neoclassical transport in helical plasmas can be avoided by the spontaneous formation of the radial electric field. At the same time, it is found that the experimentally estimated heat diffusivity is significantly reduced. This suggests that the formation process of the transport barrier in the high electron temperature plasma can be caused by the spontaneous formation of the radial electric field.

本文言語英語
論文番号1403039
ジャーナルPlasma and Fusion Research
8
2013
DOI
出版ステータス出版済み - 2013
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学

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