Modeling of Bound Electron Effects in Particle-in-Cell

作     者：Xiangyan An Min Chen Zheng-Ming Sheng Jie Zhang 

作者机构：Key Laboratory for Laser Plasmas(MoE)School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSAShanghai Jiao Tong UniversityShanghai 200240China Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Communications in Computational Physics》 (计算物理通讯（英文）)

年 卷 期：2022年第32卷第7期

页      面：583-594页

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by the National Natural Science Foundation of China(11991074 and 12135009) 

主　　题：Particle-in-cell simulation bound electrons x-rays crystals 

摘      要：To include the bound electron effects in particle-in-cell(PIC)simulation,we propose a model in which the response of the dipole components of partially ionized ions to external electromagnetic fields can be *** of treating the macroion particle as a single particle without an internal structure,the ions are considered to have a structure composed of a central nucleus and a bounded electron cloud in our *** two parts experience the interactions of both the external electromagnetic fields and the internal Coulomb *** this way,the laser scattering effects by a partially ionized medium can be modeled properly in the PIC *** laser propagation in a neutral medium and the Bragg scattering of the laser in crystal structure have been simulated with a PIC code modified based on our model as the *** model may find applications to study some interesting problems,such as the x-ray laser-driven wakefield acceleration in crystals,the x-ray laser-driven high energy density physics,and intense laser propagation in partially ionized nonlinear optical materials,etc.