Molecular Dynamics Simulations of the Interactions Between Tungsten Dust and Beryllium Plasma-Facing Material

作     者：牛国鉴 李小椿 徐倩 杨钟时 罗广南 

作者机构：Institute of Plasma PhysicsChinese Academy of Sciences University of Science and Technology of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2015年第17卷第12期

页      面：1072-1077页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：supported by the National Magnetic Confinement Fusion Science Program of China(Nos.2013GB105001,2013GB105002,and 2015GB109001) National Natural Science Foundation of China(Nos.11205198,11305213 and 11405201) Technological Development Grant of Hefei Science Center of CAS(No.2014TDG-HSC003) 

主　　题：nanometer tungsten incident grains micrometer radius penetration hexagonal facing evaporation 

摘      要：In the present research,molecular dynamics simulation is applied to study the interactions between tungsten dusts and a beryllium plasma-facing material *** results show that it is quite difficult for nanometer-size dust particles to damage the plasma-facing material surface,which is different from the micrometer-size *** reason may be the size difference between dust and crystal *** depth of dust penetration into plasma-facing materials is closely related to the incident velocity,and the impacting angle also plays an important *** and material surface damage is also *** show that both incident velocity and angle can significantly influence the damage.