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

In the present research,molecular dynamics simulation is applied to study the interactions between tungsten dusts and a beryllium plasma-facing material surface.Calculation results show that it is quite difficult for nanometer-size dust particles to damage the plasma-facing material surface,which is...

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Published inPlasma science & technology Vol. 17; no. 12; pp. 1072 - 1077
Main Author 牛国鉴 李小椿 徐倩 杨钟时 罗广南
Format Journal Article
LanguageEnglish
Published 01.12.2015
Subjects
Beryllium
Crystals
Damage
Dust
Mathematical analysis
Molecular dynamics
Simulation
Tungsten
分子动力学模拟
尘埃粒子
尺寸差异
材料表面
相互作用
等离子体
钨
铍
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ISSN1009-0630
DOI10.1088/1009-0630/17/12/16

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Summary:In the present research,molecular dynamics simulation is applied to study the interactions between tungsten dusts and a beryllium plasma-facing material surface.Calculation 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 ones.The reason may be the size difference between dust and crystal grains.The depth of dust penetration into plasma-facing materials is closely related to the incident velocity,and the impacting angle also plays an important role.Dust and material surface damage is also investigated.Results show that both incident velocity and angle can significantly influence the damage.
Bibliography:nanometer tungsten incident grains micrometer radius penetration hexagonal facing evaporation
In the present research,molecular dynamics simulation is applied to study the interactions between tungsten dusts and a beryllium plasma-facing material surface.Calculation 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 ones.The reason may be the size difference between dust and crystal grains.The depth of dust penetration into plasma-facing materials is closely related to the incident velocity,and the impacting angle also plays an important role.Dust and material surface damage is also investigated.Results show that both incident velocity and angle can significantly influence the damage.
NIU Guojian, LI Xiaochun,XU Qian , YANG Zhongshi,LUO Guangnan（1Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China ;2University of Science anti Technology of China, Hefei 230031, China）
34-1187/TL
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ISSN:1009-0630
DOI:10.1088/1009-0630/17/12/16