Integration of Vlasov equation by a fast Fourier Eulerian code

Abstract A program computing the Vlasov-Poisson system in one dimension is presented. The method is based on time splitting, exact solution of the resulting equations and shift in phase space by FFT. Title of program: VLFF Catalogue Id: ABHD_v1_0 Nature of problem We look for a solution of the one dimensional Vlasov-Poisson system for a non collisional spatially periodic plasma, starting from an initial condition, here a two stream distribution function or an n holes BGK equilibrium, slightly perturbed. Versions of this program held in the CPC repository in Mendeley Data ABHD_v1_0; VLFF; 10.1016/0010-4655(89)90112-4 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)摘要 本文介绍一款用于求解一维弗拉索夫-泊松（Vlasov-Poisson）系统的程序。该方法采用时间分裂法，通过精确求解所得方程，并借助快速傅里叶变换（Fast Fourier Transform, FFT）完成相空间位移操作。 程序名称：VLFF 目录编号：ABHD_v1_0 问题背景 我们旨在从初始条件出发，求解无碰撞空间周期性等离子体的一维弗拉索夫-泊松系统；此处初始条件为经小幅扰动的双流分布函数或n孔BGK平衡态。 本程序在Mendeley数据的CPC程序库中的存档版本信息为：ABHD_v1_0; VLFF; 10.1016/0010-4655(89)90112-4 本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019年）