Zusammenfassung
It is found that no current is driven in a central region of a tokamak plasma once the central current density becomes nearly zero (``current hole''), in spite of high electric conductivity, at the current drive by a toroidal electric field and a radio-frequency wave in experiments on the JT-60U tokamak. This is a new, stiff, self-organized structure of a magnetic field in an axisymmetric toroidal plasma.
Nutzer