阻尼对圆柱和球形几何中孤岛结构频谱的影响

IF 1.3 4区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

IEEE Transactions on Plasma Science Pub Date : 2024-08-14 DOI:10.1109/TPS.2024.3438559

Laxmikanta Mandi;Uday Narayan Ghosh;Swarniv Chandra;Chinmay Das;Prasanta Chatterjee

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引用次数: 0

摘要

研究了球形和圆柱形尘埃离子声波（DIAWs）的尘埃离子碰撞效应。利用还原扰动技术（RPT），导出了带有附加阻尼项的演化方程。对于非平面几何中的演化方程，得到了一个近似的随时间变化的孤波解析解。结果表明，尘埃离子碰撞频率在非平面几何中孤波结构的存在区域起着重要作用。同时还发现尘埃离子碰撞频率和光谱指数$\kappa $对孤波的振幅和宽度有重要影响。此外，我们还对参数对孤波演化机制的影响进行了数值研究，这将有助于更好地理解这一过程。

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Damping Effects on the Spectrum of Solitary Structures in Cylindrical and Spherical Geometry

The dust-ion collisional effect is investigated for dust ion acoustic waves (DIAWs) in the spherical and cylindrical geometry. Using the reductive perturbation technique (RPT), the evolution equation is derived with an additional damping term. An approximate analytical time-dependent solitary wave solution is obtained for the evolution equation in nonplaner geometry. It is seen that dust ion collisional frequency plays an important role in the existence region of the solitary wave structure in the nonplanar geometry. It is also seen that dust-ion collisional frequency and spectral index

$\kappa $

have a significant role in the amplitude and width of the solitary wave. Additionally, we have numerically investigated the parametric influence on the solitonic evolution mechanism which will help understand the process better.

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来源期刊

IEEE Transactions on Plasma Science 物理-物理：流体与等离子体

CiteScore

3.00

自引率

20.00%

发文量

538

审稿时长

3.8 months

期刊介绍： The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.