トカマク合体実験を用いた3次元磁気リコネクションの検証

抄録

We studied three dimensional effect on reconnection speed in TS-6 tokamak merging experiment. When we merge two tokamak plasmas, we observed both of axisymmetric and asymmetric current sheet structures on the midplane with almost equal probability. We found that the reconnection speed of the asymmetric (three-dimensional) reconnection is about three times higher than the symmetric (two-dimensional) reconnection. This result indicates toroidal asymmetry of current sheet structure can be one of the fast reconnection mechanisms.