Time evolutions of (a) the width and (b) the rotation frequency of magnetic islands. Four cases are examined: (i) the tearing mode, (ii) the drift-tearing mode, (iii) the tearing mode with the magnetic perturbation, and (iv) the drift-tearing mode with the magnetic perturbation.
Contours of the magnetic flux surface [(a) and (b)], the (2,1) electrostatic potential [(c) and (d)], and the (2,1) vector potential [(e) and (f)] in the nonlinear saturation state. Two cases are examined: the tearing mode [(a), (c), and (e)] and the drift-tearing mode locked by the resonant magnetic perturbation [(b), (d), and (f)].
Radial profiles of radial electric fields around O-points of magnetic islands locked by resonant magnetic perturbations.
Radial profiles of (a) radial electric fields and (b) stresses around the O-point of magnetic islands locked by resonant magnetic perturbations.
Parameter dependence of the stress, the radial electric field shear, and the typical scale length of the radial electric field shear.
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