Collaborative Research: Research on Strongly Coupled Plasmas

波士顿学院（BC, Gabor J. Kalman博士，首席研究员）和佛蒙特大学（UVM, Kenneth I. Golden博士，首席研究员）将继续进行强耦合等离子体理论/计算研究的合作项目。强库仑相互作用是各种物理系统的特征。主要兴趣是实验室尘埃等离子体，限制在低温陷阱和存储环中的带电粒子，半导体量子阱中的分层带电粒子系统，以及天体物理等离子体（例如巨行星和白矮星内部）。BC/UVM联合研究项目将重点研究这些系统。提出的研究解决了与强耦合系统实验相关的一些主要理论问题：相关和静态结构函数，热力学（状态和相边界方程），介电响应和集体模式行为。类似的问题也出现在多层半导体等离子体中，其考虑也构成了拟议工作的一部分。在提出的研究中使用的主要方法依赖于主要研究人员的一系列工作，其中特别适合描述强耦合（相关）等离子体的动力学行为的方法已经制定出来。这种方法被称为准局域电荷近似，在之前的资助时期被使用，并为实验室实验和计算机模拟的解释提供了理论的、透明的模型。这项分析工作将与匈牙利科学院（布达佩斯）的一个研究小组合作进行的分子动力学模拟并行。

A Collaborative Project of theoretical/computational research on strongly coupled plasmas will be continued by Boston College (BC; Dr. Gabor J. Kalman, Principal Investigator) and the University of Vermont (UVM; Dr. Kenneth I. Golden, Principal Investigator).Strong Coulomb interactions are featured by a variety of physical systems. Of primary interest are laboratory dusty plasmas, charged particles confined in cryogenic traps and storage rings, layered charged particle systems in semiconductor quantum wells, and astrophysical plasmas (giant planetary and white dwarf interiors, e.g.). The joint BC/UVM research project will focus on these systems.The proposed research addresses some of the major theoretical issues related toExperiments in strongly coupled systems: correlation and static structure functions, thermodynamics (equation of state and phase boundaries), dielectric response and collective mode behavior. Similar issues arise in multi-layer semiconductor plasmas whose consideration also forms a part of the proposed work.The main approach to be used in the proposed investigations relies on a series of works by the Principal Investigators in which a method especially appropriate for the description of the dynamical behavior of strongly coupled (correlated) plasmas was worked out. This method, referred to as the Quasi-Localized Charge Approximation, was used in the previous funding periods and has provided theoretical, transparent models for the interpretation of laboratory experiments and computer simulations. This analytical work will be paralleled by molecular dynamics simulations done in collaboration with a research group of the Hungarian Academy of Sciences (Budapest)].