钨用作核聚变装置面对等离子体材料可行性分析

Feasibility of Employing Tungsten for Plasma Facing Material in Fusion Devices

通过与碳材料比较,分析钨作为核聚变面对等离子体材料的可行性。研究结果显示,钨是最有前景的面对等离子体材料,氢及其同位素滞留量小、热能和粒子反射率高、溅射率低、杂质聚集可控等,除此之外,钨具有熔点高、热力学性能优异等优点。

The feasibility of employing tungsten for plasma facing material in fusion devices is carried out by means of comparison with carbon. The results indicate that tungsten is the most promising plasma facing material, which has the lower hydrogen and isotopes retention. Tungsten has the higher coefficients of energy and particle reflection which also benefit the lifetime of PFM besides its highest melting, high sputtering threshold and thermal conductivity. The high-Z impurity accumulation in the core can be controlled by selecting suitable impurity transport way.