Study Of Material Response On Simulated Iter Disruptive Plasma Heat Load With Variable Duration

Some results of the study of material response on plasma high heat flux load are given in the report. The high power long pulse plasma accelerator of the VIKA facility is used as source of plasma high heat flux (wp⩽30 MJ/m2). The peculiarity of the described experiments is variation of a rectangular like pulse duration of the plasma stream (τp=0.09; 0.18; 0.27; 0.36 ms). Some data of the plasma parameters in a plasma-material interaction zone are given. The growth of both mass losses and crater depth with irradiation increase is fixed for Al and Cu. As a preliminary results one has a tendency for decreasing both the crack length for a “hot” (T=300°C) irradiated Al sample and mass losses for W irradiated at T=1000°C