Effects of Magnetization of Background Ions on Wave Spectra of 2D Complex Plasma  

本底离子磁化对二维复杂等离子体波谱的影响

作　　者：Zhang Hui Zhang Lanxin Sun Shulin Yang Fang Kong Wei 张辉;张蓝心;孙澍霖;杨芳;孔伟(中国民航大学理学院,天津300300;中国民航大学电子信息与自动化学院,天津300300)

机构地区：[1]College of Science,Civial Aviation University of China,Tianjin 300300,China [2]College of Electric Information and Automation,Civial Aviation University of China,Tianjin 300300,China

出　　处：《南开大学学报(自然科学版)》2025年第1期22-33,共12页Journal of Nankai University(Natural Sience)

基　　金：Supported by National Natural Science Foundation of China(12275354,11805272);College Students'Innovative Entrepreneurial Training Plan Program of Civil Aviation University of China(202210059079)。

摘　　要：The longitudinal and transverse waves of 2D magnetized complex plasma based on the drivendissipative Langevin dynamics simulation are investigated.The modified Yukawa potential with including the magnetization of background ions is used to account for the interaction of the charged dust particles.The simulation results are compared with the existing theories including quasilocalized charge approximation and randomphase approximation.In the weak magnetization regime,the wave spectra obtained from Yukawa simulation and modified Yukawa simulation basically are the same.In the strong magnetization regime,the magnetization of background ions and temperature ratio of background electrons to background ions play effects on the wave spectra of the system,particularly for the strongly coupled state.The dust acoustic waves in the weakly coupled state basically are not influenced by the magnetization of background ions.基于驱动耗散郎之万分子动力学模拟,研究了二维磁化复合等离子体的纵波和横波.修正后的汤川势(包括本底离子的磁化)用于解释带电尘埃粒子间的相互作用.将模拟结果与现有的准局域电荷近似和随机相位近似理论进行了比较.在弱磁化状态下,汤川模拟和修正汤川仿真得到的波谱基本相同.在强磁化状态下,本底离子的磁化强度和本底电子与本底离子的温度比对系统的波谱有影响,特别是对于强耦合状态.弱耦合状态下的尘埃声波基本上不受本底离子磁化的影响.

关 键 词：wave spectrum dusty plasma magnetic field 

分 类 号：O53[理学—等离子体物理]