Heavy/high Z metal materials are the preferred materials for plasma facing components in International Thermonuclear Experimental Reactor (ITER) due to their excellent properties. However, at thermonuclear fusion relevant temperatures, the accumulation of heavy/high-Z particles in the core region may significantly cool the plasmas, deteriorating the plasma performance and leading to H to L-mode back transition and even further to radiative collapse.
Click here for original story, New study reveals key factors in core heavy impurities transport and control on EAST
Source: Phys.org