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Home / Publications / Journals / Fusion Science and Technology / Volume 51 / Number 2T / Pages 373-375

Rotation of a Field-Reversed Configuration due to Resistive Flux Decay

Hidefumi Yamaura, Toshiki Takahashi, Yoshiomi Kondoh, Tomohiko Asai, Tsutomu Takahashi (19P59)

Fusion Science and Technology / Volume 51 / Number 2T / February 2007 / Pages 373-375

Technical Paper / Open Magnetic Systems for Plasma Confinement

Rotation of a Field-Reversed Configuration (FRC) plasma due to a resistive flux decay is numerically studied. When the anomaly factor is 10, the flux lifetime is found to be about 60 sec in a case that the external magnetic field is O.4 T and the wall radius is 0.17 m. Single-particle motions in a quasi-steady resistively decaying FRC equilibrium are calculated, and a local flow velocity is estimated by a particle-in-cell method. An electric acceleration of a betatron particle near the field-null is shown; this can cause a plasma rotation. From a comparison of the toroidal ion flow velocity profile between with and without the flux decay, it is found that the ion rotation begins at the field-null.

 
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