[Table of Contents]

Plasma and Fusion Research

Volume 5, S2060 (2010)

Regular Articles

Plasmoid Motion in Helical Plasmas
Ryuichi ISHIZAKI and Noriyoshi NAKAJIMA
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 12 December 2009 / Accepted 18 May 2010 / Published 10 December 2010)

Abstract

In order to explain the difference between the motion of plasmoids created by pellet injection in tokamak and helical plasmas, magnetohydrodynamic (MHD) simulations including ablation processes have been performed in tokamak and Large Helical Device (LHD) plasmas. In the LHD, plasmoid motion depends on the initial location of the plasmoid, whereas in a tokamak, the plasmoid always drifts in the direction opposite to that of the curvature vector. It is verified that there are two main forces acting on the plasmoid, and the connection length determines the dominant force.

Keywords

pellet, MHD, ablation

DOI: 10.1585/pfr.5.S2060

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This paper may be cited as follows:

Ryuichi ISHIZAKI and Noriyoshi NAKAJIMA, Plasma Fusion Res. 5, S2060 (2010).