The motion of a plasma flux is studied in the toroidal system with crossed radial electric and longitudinal magnetic fields. It is shown that the particle motion occurs within the dynamic boundary which is narrower than the region of electrostatic and magnetic confinement. In this case it is the electric field that plays a predominant role in the ion transport. The effect of input conditions on the flux passage through the system is analysed. It is found that the change of the radius of curvature of the magnetic field lines in the input section causes the appearance of the electric field component directed against the flux motion and essentially influences the effectiveness of particle transport. Good agreement between theory and experiment is obtained.
トロイダル系における交差した動径電場と縦磁場中のプラズマ流束の運動を研究した。粒子の運動は、静電・磁気閉じ込めの領域よりも狭い動的境界内で生じることが示された。この場合、イオン輸送において支配的な役割を果たすのは電場である。入力条件が系を通る流束に及ぼす影響を解析した。入力部における磁力線の曲率半径の変化が、流束の運動に逆らう方向の電場成分の出現を引き起こし、粒子輸送の効率に本質的な影響を及ぼすことが見出された。理論と実験の間に良好な一致が得られた。