High-heat flux tests of fusion materials with stationary plasma in the PLM device

Abstract The PLM plasma device was constructed for high heat flux tests of fusion plasma-facing materials and in-vessel components of a fusion reactor. The ITER-grade tungsten samples were irradiated with steady-state plasma in PLM. The combined tests of ITER-grade tungsten samples with an e-beam load of 40 MW/m2 and stationary steady-state plasma load of ∼1 MW/m2 led to erosion, cracking, and nanostructured “fuzz” structure growth on the material surface. The capillary porous system of liquid tin was tested with steady-state plasma in PLM during ∼200 min demonstrating sustainability under high heat plasma load. Lithium materials deposited in the T-10 tokamak during experiments with lithium capillary-porous system have been irradiated with stationary steady-state plasma in PLM to test the evolution of the deposits under long-term plasma load.