Hyper-Velocity Fullerene-Dusty Plasma Jets for Disruption Mitigation

摘要

High-velocity hydrogen plasma jets demonstrated deep penetration into magnetically confined toka-mak plasma during fueling experiments. Disruption mitigation with plasma jets requires much larger mass (～0.3 g for DIII-D and ～30 g for ITER) to be delivered into the plasma core. We present a concept of using hyper-velocity C_(60) fullerene-dusty plasma jets for disruption mitigation of magnetically confined plasmas. The C_(60)-fullerenes can form a compact plasma slug which can be accelerated to hyper-velocity (～50 km/s) allowing for deep penetration into the tokamak target plasma. We evaluate the principle advantages, means to create it using a pulsed source, the atomic processes during acceleration to hyper-velocity and subsequent transport, and the interaction with the ambient target tokamak plasma during penetration.