等离子体粒子模拟的静电波谱响应特性

计算物理 ›› 1984, Vol. 1 ›› Issue (2): 200-211.

等离子体粒子模拟的静电波谱响应特性

刘成海¹, 王闽²

1. 中国科学院原子能研究所;
2. 长沙工学院应用物理系

收稿日期:1983-12-30 出版日期:1984-12-25 发布日期:1984-12-25

THE ELECTROSTATIC WAVE SPECTRAL RESPONSE OF PLASMA PARTICLE SIMULATION

LIU CHENG-HAI¹, WANG MIN²

1. Institute of Atomic Energy Academia Sinica;
2. Applied Physics Dept. Changsha Institute of Technology

Received:1983-12-30 Online:1984-12-25 Published:1984-12-25

摘要/Abstract

摘要： 本文系统地分析了等离子体粒子模拟的静电波谱响应特性。我们引入了波谱响应函数的概念,并对有限大小粒子的高斯型、三角型和方块型分布及其在网格点附近的偶极展开,对Poisson方程的有限差分和FFT解法分别导出了响应函数表达式。分析讨论了有限大小粒子形状、宽度和处理方式,空间离散化和Poisson方程求解方法对粒子模拟波谱响应特性的影响及对短波噪声的抑制特性。

Abstract: Plasma particle simulation wave spectral response to electrostatic wave is systematically analyzed. We introduce the wave spectral-response function of plasma particle simulation.The response expre-sion in following case is derived respectively, Finite-Size-Particle with Gauss, triangle and square shape, its dipole expansion near grid point, finite difference and FFT solving process of Poisson equation. The influence of shape, size and treatment of Finite-Size-Particle, space discreteness and solving process of Poisson equation on particle simulation spectral response and the depression of short wave noise are discussed.

刘成海, 王闽. 等离子体粒子模拟的静电波谱响应特性[J]. 计算物理, 1984, 1(2): 200-211.

LIU CHENG-HAI, WANG MIN. THE ELECTROSTATIC WAVE SPECTRAL RESPONSE OF PLASMA PARTICLE SIMULATION[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1984, 1(2): 200-211.