Analysis of effect of ion irradiation to liquid surface on water molecule kinetics by classical molecular dynamics simulation
Analysis of effect of ion irradiation to liquid surface on water molecule kinetics by classical molecular dynamics simulation
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DOI：
10.7567/jjap.53.010210
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发表时间：
2013
影响因子：
1.5
通讯作者：
Y. Minagawa;N. Shirai;S. Uchida;F. Tochikubo
中科院分区：
文献类型：
--
作者：
Y. Minagawa;N. Shirai;S. Uchida;F. Tochikubo
我们分析了水分子的物理行为，以评估从大气压等离子体到液体表面的离子轰击的效果，通过经典的分子动力学模拟。作为入射离子，考虑O+。研究了动能为10和100 eV的O+离子撞击液体表面后溅射水分子的数量、液体温度和离子在液体中的穿透深度。通过离子碰撞溅射的水分子的平均数在10 eV下为0.5，在100 eV下为7.0。水分子的溅射依赖于离子的穿透深度和近表面液体温度。详细讨论了溅射动力学。此外，我们提出了一个外电场下的液体表面上的离子撞击的效果。结果表明，随着电场强度的增加，溅射水分子的数量增加，从而影响水分子的取向。
We analyzed the physical behavior of water molecules to assess the effect of ion bombardment from atmospheric-pressure plasma to a liquid surface by classical molecular dynamics simulation. As the incident ions, O+ was considered. The number of sputtered water molecules, liquid temperature, and ion penetration depth in liquid were investigated after O+ ions with kinetic energies of 10 and 100 eV impinged on the liquid surface. The average numbers of sputtered water molecules by ion impact were 0.5 at 10 eV and 7.0 at 100 eV. The sputtering of water molecules depended on the ion penetration depth and near-surface liquid temperature. The sputtering dynamics was discussed in detail. In addition, we presented the effect of an impinging ion on a liquid surface under an external electric field. The result shows that the number of sputtered water molecules increases with increasing electric field strength, which affects the water molecule orientation.