Simultaneous heating by ICRF wave and neutral-beam injection

A theoretical analysis of ICRF wave heating in a plasma with neutral-beam injection (NBI) is performed. Wave propagation and absorption are examined kinetically in the presence of a high-energy ion beam component. The following findings are reported: 1) the wave coupling efficiency does not deteriorate by the beam; 2) co-operative heating is to be expected, and 3) selective heating of high-energy ions is possible.