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国家自然科学基金(10010760807)

作品数:3 被引量:2H指数:1
相关作者:王晓东吴迪马腾才张建红刘悦更多>>
相关机构:大连理工大学更多>>
发文基金:国家自然科学基金更多>>
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Three-Dimensional Dust Crystal
2006年
Dust plasmas have received considerable attention in recent years due to the fact that a kind of crystal could be established, which is a typical example of an ideal material. In this system, the dust particles are often confined upon a three-dimensional sheath of an axissymmetric concave electrode, where the axial electrostatic force balances the gravitation and the radial electrostatic force keeps the dust from running away horizontally. In this paper, a threedimensional sheath structure is simulated through a liquid model, and the movement of the dust particles is simulated via the dynamic method. The crystals are obtained self consistently. The effect of both the electrode size and the mass of dust particles on the crystals are discussed. The simulation result demonstrates that two kinds of dust crystals could be established by varying the sheath diameter, and some proper conditions are necessary for the formation of a double layer dust crystal.
张宇刘金远刘悦王晓钢
关键词:THREE-DIMENSIONAL
强流脉冲离子束辐照双层靶能量沉积的数值模拟
利用拟合实验测得的 TEMP II 型加速器磁绝缘二极管(MID)电压波形及其焦点附近束流密度曲线,建立了 Gaussian 分布模型。采用 Monte Carlo 方法研究了强流脉冲离子束与具有双层靶结构的镀有金属金膜...
宫野王晓东吴迪刘金远刘悦王晓钢马腾才
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Vibrational Mode in Two-Dimensional Dust Monolayer with Finite Size Dust Grains
2006年
Vibrational mode in a two-dimensional dust monolayer is investigated by considering the finite size of dust grains. Each dust grain is assumed to be a negative point charge and a dipole moment due to the inhomogeneous charge distribution on its surface. The dispersion relation of the vibrational mode is derived. Both the self-excited and externally excited cases are discussed. It is shown that the mode is sensitive to the direction of the dipole moment.
王春华王晓钢
强流脉冲离子束辐照双层靶能量沉积的数值模拟被引量:2
2008年
利用拟合实验测得的TEMPⅡ型加速器磁绝缘二极管电压波形及其焦点附近束流密度曲线,建立了Gauss分布模型.采用Monte Carlo方法研究了强流脉冲离子束与铝材镀有不同厚度金膜的双层靶(金膜与铝材合称为双层靶)之间的相互作用,模拟了能量沉积的演化过程和随不同金膜厚度的变化情况.对脉冲离子束强化薄膜粘结性进行了探讨.
宫野张建红王晓东吴迪刘金远刘悦王晓钢马腾才
关键词:强流脉冲离子束MONTECARLO方法
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