Abstract

Sputtering yields and their angular dependences for tungsten bombarded with beryllium (Be) and neon (Ne) ions were calculated using the molecular dynamics method, showing good agreement with experiment for Ne–W collisions. Data for the Be–W interaction are necessary for calculating the impurity supply during bombardment of the diverter material (W) into plasma of the ITER tokamak. A model is proposed that explains universal behavior of the sputtering yields of tungsten in the near-threshold region during bombardment by light ions.

中文翻译：

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铍和氖离子溅射钨

摘要

使用分子动力学方法计算了被铍（Be）和氖（Ne）离子轰击的钨的溅射产率及其角度依赖性。该结果与Ne-W碰撞实验吻合良好。Be-W相互作用的数据对于计算在ITER托卡马克等离子体中轰击分流器材料（W）的过程中的杂质供应是必要的。提出了一个模型，该模型解释了在轻离子轰击过程中，钨在近阈值区域的溅射产率的普遍行为。