The penetration of the rotating magnetic field of the dynamic ergodic divertor (DED) into the TEXTOR tokamak plasma has been investigated, using a two-dimensional reduced magnetohydrodynamics model and taking into account the effects of plasma–neutral interaction and neoclassical viscosity. The real three-dimensional structure of the DED coils design results in a mixture of several spatial Fourier modes which rotate at different phase velocities. It is shown that the field penetration is accompanied by poloidal acceleration of the plasma, which plays a crucial role in the process. For the DED TEXTOR parameters, the plasma–neutral interaction and the neoclassical viscosity allow for a distribution of the perturbed magnetic field close to vacuum one. If the mixture of harmonics is taken into account, the acceleration of the plasma in poloidal direction does not provide a complete penetration of the perturbation.
動的エルゴディックダイバータ（DED）の回転磁場のTEXTORトカマクプラズマへの浸透を、二次元簡約磁気流体モデルを用いて、プラズマ・中性粒子相互作用と新古典粘性の効果を考慮して調べた。DEDコイルの実際の三次元構造は、異なる位相速度で回転する複数の空間モードの混合をもたらす。磁場の浸透にはプラズマのポロイダル方向の加速が伴い、これが過程において重要な役割を果たすことが示された。DEDのTEXTORパラメータでは、プラズマ・中性粒子相互作用と新古典粘性により、摂動磁場の分布は真空磁場に近いものとなる。高調波の混合を考慮すると、ポロイダル方向のプラズマ加速は摂動の完全な浸透をもたらさない。