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首页> 外文期刊>Bulletin of the American Physical Society >APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Molecular Dynamics Simulations of Magnetized Dusty Plasmas
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APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Molecular Dynamics Simulations of Magnetized Dusty Plasmas

机译：APS-等离子体物理APS部门第59届年会-事件-磁化多尘等离子体的分子动力学模拟

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摘要

Molecular Dynamics (MD) simulations of dusty plasma particles under various B and E x B configurations, where E and B are electric and magnetic fields, are presented. The numerical algorithm solves Poisson’s equation dynamically throughout the simulation to account for time-changing conditions such as inter-particle distance and time-dependent functions of ion temperature, and E and B fields. Simulations are run in 2D and 3D, and the results are being used to explore dust crystallization, quenching, and heating under intense B fields and high E x B drift velocities. The MD code is used to explore scenarios for E x B experiments planned with dust immersed in argon plasmas resulting from a combination of RF and DC glow discharges with the B-field produced by a Bitter-type electromagnet under development called ALPHA (Adjustable Long Pulse High-Field Apparatus) capable of sustaining fields up to 10 T from seconds to minutes. Particle tracking and stereoscopic reconstruction algorithms to be used on experimental data are also being tested with MD simulated particle position and velocity for ensembles that range from tens to hundreds of particles. The hardware and diagnostic setup planned for the experiments are also presented.
机译：提出了在各种B和E x B配置下（其中E和B是电场和磁场）的尘土等离子体颗粒的分子动力学（MD）模拟。数值算法在整个仿真过程中动态地求解泊松方程，以解决随时间变化的条件，例如粒子间距离和离子温度随时间变化的函数以及E和B场。模拟在2D和3D中进行，结果用于探索在强B场和高E x B漂移速度下的粉尘结晶，淬火和加热。 MD代码用于探索E x B实验的方案，该方案计划将RF和DC辉光放电与正在开发的称为ALPHA（可调节长脉冲）的苦味型电磁铁产生的B场相结合，将粉尘浸入氩等离子体中进行E x B实验高磁场仪器），能够在几秒钟到几分钟内维持高达10 T的磁场。用于实验数据的粒子跟踪和立体重建算法也正在用MD模拟的粒子位置和速度进行测试，其范围从数十个粒子到数百个粒子不等。还介绍了为实验计划的硬件和诊断设置。

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