CAJ | 학술논문

依据钨材料表面溅射的实验现象，建立钨材料表面粗糙模型，模拟了高能H+、He+粒子辐照下的钨材料表面的溅射行为过程，并与基于离子输运的双群模型计算得到的结果作了比较。结果表明，随着钨材料表面粗糙程度的增加，溅射率降低；对一定的粗糙表面，相同能量的不同入射粒子，质量越大粒子溅射率越高，这些结果为分析聚变装置中心等离子体杂质水平和评价偏滤器寿命等提供了一定的理论支撑。
의거오재료표면천사적실험현상，건립오재료표면조조모형，모의료고능H+、He+입자복조하적오재료표면적천사행위과정，병여기우리자수운적쌍군모형계산득도적결과작료비교。결과표명，수착오재료표면조조정도적증가，천사솔강저；대일정적조조표면，상동능량적불동입사입자，질량월대입자천사솔월고，저사결과위분석취변장치중심등리자체잡질수평화평개편려기수명등제공료일정적이론지탱。
Based on experimental results of sputtering of tungsten surface, a model of surface roughness was constructed and the sputter of tungsten surface under the irradiation of high energy H+ and He+particles was simulated. The comparison with bipartition model of ion transport theory calculation results was provided. The results show that the sputtering rate decreases with increase of surface roughness of tungsten material. The sputtering rate increases with the particle mass for a certain rough surface and for the same energy of incident particles. These results provide some theoretical support to analyse the impurity level in core plasma of fusion reactors and estimate the lifetime of divertor.