A review of plasma-wall boundary effects on core confinement and lithium applications to boundary-controlled magnetic fusion experiments

摘要

Reduced particle recycling in the edge region is often considered to be a necessary condition to achieve high-performance confinement in magnetic fusion experiments. However, it is also true that whenever or however core confinement improves, as a result edge recycling is reduced. To provide a logical interpretation of this circular cause-and-consequence relation, reviewed in this paper are some of the important data demonstrating plasma-wall boundary effects on core confinement and also those evaluating innovative wall concepts with lithium applied to sustain optimized boundary conditions for the operation of steady-state fusion power reactors.