研究带有正离子和相对论电子的暖磁等离子体中的大振幅离子声孤波

IF 0.8 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
B. Madhukalya, M. Das, R. Das, L. Kalita
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引用次数: 0

摘要

萨格迪夫伪势(SP)方法用于研究带有相对论电子的暖磁化等离子体中的离子声孤波(IASWs)。利用伪势方法可以研究任意振幅的孤波(SW)结构。研究强调了在特定的参数条件下,同时出现压缩(\left( {N > 1} \right))亚音速(\left( {M < 1} \right))孤子,以及稀射(\left( {N < 1} \right))亚音速和超音速(\left( {M > 1} \right))孤子。值得注意的是,随着波传播方向余弦值 \(k_{z}\)的增大,SWs 的振幅和势阱深度都会减小。振幅的减小表明磁场线与波的传播方向更加接近。在这个等离子体模型中,压缩亚音速、稀疏亚音速和超音速孤子共存是一个丰富而复杂的现象,对等离子体物理具有基础和实际意义。它反映了等离子体中非线性效应、粒子动力学和波传播之间错综复杂的相互作用,在实验室和天体物理学中都有潜在的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Investigation of large-amplitude ion acoustic solitary waves in a warm magnetoplasma with positive ions and relativistic electrons

Investigation of large-amplitude ion acoustic solitary waves in a warm magnetoplasma with positive ions and relativistic electrons

Investigation of large-amplitude ion acoustic solitary waves in a warm magnetoplasma with positive ions and relativistic electrons

The Sagdeev pseudopotential (SP) method is used to study ion acoustic solitary waves (IASWs) in a warm, magnetized plasma with relativistic electrons. Employing the pseudopotential approach allows for the investigation of solitary wave (SW) structures across arbitrary amplitudes. The study highlights the simultaneous occurrence of compressive \(\left( {N > 1} \right)\) subsonic \(\left( {M < 1} \right)\) solitons, as well as rarefactive \(\left( {N < 1} \right)\) subsonic and supersonic \(\left( {M > 1} \right)\) solitons, under specific parametric conditions. Notably, it is seen that as the direction cosine of wave propagation \(k_{z}\) increases, both the amplitude of SWs and the depth of the potential well decrease. The reduction in amplitude indicates a closer alignment between the magnetic field lines and the direction of wave propagation. The coexistence of compressive subsonic, rarefactive subsonic, and supersonic solitons in this plasma model is a rich and complex phenomenon that has both fundamental and practical implications in plasma physics. It reflects the intricate interplay of nonlinear effects, particle dynamics, and wave propagation in plasmas, with potential applications in both laboratory and astrophysical contexts.

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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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