RADIATION COOLING EXPERIMENTS AND REACTOR APPLICATION

The concept of a cold radiative plasma boundary is presented as a poss ible solution of the energy exhaust problem in a fusion reactor. The m ost relevant processes which determine level and location of the radia tion from low-Z impurities are discussed in detail. Experimental resul ts are used to demonstrate the general feasibility of generating a sta ble and quasi-stationary plasma with a cold radiating layer on a high power level. Furthermore, the limitations of the concept are briefly a nalyzed addressing feed-back control of the impurity level, thermal st ability, particle transport and ignition conditions.