Structure of dusty plasma in external fields : Simulation and theory
Structure of dusty plasma in external fields : Simulation and theory
复制标题
外场中尘埃等离子体的结构：模拟与理论
DOI：
10.1143/jjap.36.4980
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发表时间：
1997
影响因子：
1.5
通讯作者：
C. Totsuji
中科院分区：
文献类型：
--
作者：
H. Totsuji;Tokunari Kishimoto;C. Totsuji
为了研究尘埃等离子体中实验观察到的各种结构，采用分子动力学方法在一维外场中模拟了具有可变形周期边界条件和恒定体积和温度的Yukawa系统。在低温下，粒子被组织成薄层（片），层（片）的数量随参数的变化而变化，整个系统从近均分层重新排列到其他近均分层。将已成功应用于受限单组分等离子体的壳（片）模型推广到该系统，数值模拟结果得到了较好的再现。每一层内聚能的影响对于再现层数的离散变化至关重要。
To investigate various structures experimentally observed in dusty plasmas, a Yukawa system in a one-dimensional external field is simulated by molecular dynamics with deformable periodic boundary conditions and constant volume and temperature. At low temperatures, particles are organized into thin layers (sheets) and the number of layers (sheets) changes with the parameters, the whole system being rearranged from nearly equipartitioned layers to other nearly equipartitioned layers. The shell (sheet) model, which has been successful for confined one-component plasmas, is extended to this system and the results of numerical simulations are reproduced accurately. The effect of the cohesive energy in each layer is of essential importance to reproduce discrete changes in the number of sheets.