Advanced Search+
Wenjin Chen, Min Zhang, Zhiwei Ma. Interaction of dynamic magnetic island with bootstrap current in toroidal plasma[J]. Plasma Science and Technology.
Citation: Wenjin Chen, Min Zhang, Zhiwei Ma. Interaction of dynamic magnetic island with bootstrap current in toroidal plasma[J]. Plasma Science and Technology.

Interaction of dynamic magnetic island with bootstrap current in toroidal plasma

  • Interaction of dynamic magnetic island with bootstrap current in toroidal plasmas is investigated based on the first principles of kinetic simulation. The perturbed magnetic and electric fields associated with the dynamic magnetic island are calculated from a three-dimensional toroidal MHD code (CLT), instead of artificial imposed magnetic island perturbation. Inside the static magnetic island, the bootstrap current decreases as expected with the effective collision frequency. The radial electric field Er associated with dynamic island could cause the E×B drift, which can noticeably modify the bootstrap current distribution. If the bootstrap current turns on when the tearing mode saturates, the widths of magnetic islands ascend rapidly and saturate again for both static and dynamic cases. But the saturated island width of the dynamic case is smaller than that of the static case because the magnetic islands in the dynamic case is rotated due to strong asymmetric distribution of the bootstrap current in the vicinity of the X-points.
  • loading

Catalog

    Turn off MathJax
    Article Contents

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return