物理
色散关系
孤子
振幅
波导管
等离子体
色散(光学)
离子
边值问题
边界(拓扑)
电子
波传播
量子电动力学
离子声波
原子物理学
计算物理学
凝聚态物理
光学
量子力学
非线性系统
数学分析
数学
作者
Jae-Hung Han,Sheng-Chang Li,Junhua Luo,Hui Chen,Jun-Xiu Li
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2023-11-29
卷期号:98 (12): 125611-125611
标识
DOI:10.1088/1402-4896/ad0a28
摘要
Abstract Taking into account the cylindrical boundary, a theoretical investigation has been made for the low frequency electrostatic waves in an electron-positron-ion plasma waveguide. The dispersion relation of ion-acoustic (IA) wave is obtained, and a predication for the linear interaction phenomenon of small-amplitude cylindrical IA solitons is presented. It is shown that the cylindrical boundary has significant effects on the dispersion property of IA waves, and the frequency for short wave is significantly modified by the plasma parameters. It has also been noted that cylindrical IA solitons add up linearly when they overlap and penetrate through each other, the maximum amplitude of the overlapping soliton is nearly the sum of the individual soliton amplitude, indicating an apparent linear interaction. Furthermore, the relationships between phase delay and kinetic energy of colliding solitons for an axisymetric cylindrical geometry are derived and discussed in detail. The work presented would be useful to enrich the solitons interaction theory in astrophysical and laboratorial plasma situations.
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