WALL MATERIALS FOR THERMONUCLEAR DEVICES. Limitations due to evaporation

摘要

Evaporation of material from the walls of a vessel containing a high temperature plasma and the limitations which it imposes on the thermal loading of the wall are considered. Limiting temperatures are derived for walls of both metals and refractory oxides. Under steady state conditions it is shown that for metals thermal loadings of the wall of the order 100 watts/cm are feasible, but that for the oxides thermal loadings must be at least an order of magnitude less than this, Under transient conditions the difference between metals and refractory oxides is found to be less important.