Impact of a resonant magnetic perturbation field on impurity radiation, divertor footprint, and core plasma transport in attached and detached plasmas in the Large Helical Device
作者: M. KobayashiR. SekiS. MasuzakiS. MoritaH.M. ZhangY. NarushimaH. TanakaK. TanakaT. TokuzawaM. YokoyamaT. IdoI. Yamadathe LHD Experimental Group
作者单位: 1National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Japan
2Department of Fusion Science, SOKENDAI, Toki, Japan
3Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
刊名: Nuclear Fusion, 2019, Vol.59 (9)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/ab26e6
原始语种摘要: The effects of resonant magnetic perturbation (RMP) field on impurity radiation, divertor footprint distribution, and core plasma transport are investigated in the detachment discharges of the Large Helical Device (LHD). The RMP with m / n = 1/1 mode creates an edge magnetic island in the stochastic layer, which enhances the impurity emission from low charge states, C2+ and C3+, and then triggers a detachment transition. Emission from the higher charge states, C4+ and C5+, implies enhanced penetration of impurities during the detachment phase with RMP. The toroidal divertor particle flux distribution exhibits n = 1 mode structure in both the attached and detached phases, but with a large toroidal phase shift between the two phases. The distribution in the attached phase is well correlated...
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关键词翻译
关键词翻译
  • divertor 分流偏滤器
  • impurity 杂质
  • radiation 辐射
  • transport 输运
  • footprint 足迹
  • plasma 深绿玉髓
  • attached 附加
  • detached 分离的
  • penetration 穿透
  • detachment 脱顶构造