Effect of neutral hydrogen on edge impurity behavior in stochastic magnetic field layer of Large Helical Device

DOI 機関リポジトリ HANDLE Web Site Web Site 被引用文献4件 参考文献15件

この論文をさがす

抄録

https://orcid.org/0000-0003-4139-7721

Two-dimensional (2-D) distribution of impurity line emissions has been measured with 2-D extreme ultraviolet (EUV) spectroscopy in Large Helical Device (LHD) for studying the edge impurity transport in stochastic magnetic field layer with three-dimensional (3-D) structure. The impurity behavior in the vicinity of two X-points at inboard and outboard sides of the toroidal plasma can be separately examined with the 2-D measurement. As a result, it is found that the carbon location changes from inboard to outboard X-points when the plasma axis is shifted from Rax = 3.6 m to 3.75 m. A 3-D simulation with EMC3-EIRENE code agrees with the result at Rax = 3.75 m but disagreed with the result at Rax = 3.60 m. The discrepancy between the measurement and simulation at Rax = 3.60 m is considerably reduced when an effect of neutral hydrogen localized in the inboard side is taken into account, which can modify the density gradient and friction force along the magnetic field.

収録刊行物

被引用文献 (4)*注記

もっと見る

参考文献 (15)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ