Diffusive transport of a 2-D magnetized dusty plasma cloud

IF 2.7 3区数学 Q1 MATHEMATICS, APPLIED

Physica D: Nonlinear Phenomena Pub Date : 2025-04-26 DOI:10.1016/j.physd.2025.134692

Aman Singh Katariya , Amita Das , Animesh Sharma , Bibhuti Bhusan Sahu

{"title":"Diffusive transport of a 2-D magnetized dusty plasma cloud","authors":"Aman Singh Katariya , Amita Das , Animesh Sharma , Bibhuti Bhusan Sahu","doi":"10.1016/j.physd.2025.134692","DOIUrl":null,"url":null,"abstract":"<div><div>Transport across a transverse magnetic field of two-dimensional strongly coupled complex (dusty) plasma is studied using molecular dynamics simulations. In the collisionless undamped regime, the dust particles merely show radial pulsations in their position. This has been identified with the gyro motion of the dust particles. However, an additional damping process (which may arise due to dust-neutral collision) results in a diffusive transport. Detailed simulation studies have been carried out to obtain the scaling of the diffusion coefficient with respect to the magnetic field and the collision frequency. These scalings are found to be distinct for the two regimes of <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>c</mi><mi>d</mi></mrow></msub><mo>≪</mo><msub><mrow><mi>ν</mi></mrow><mrow><mi>d</mi><mi>n</mi></mrow></msub></mrow></math></span> and <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>c</mi><mi>d</mi></mrow></msub><mo>≫</mo><msub><mrow><mi>ν</mi></mrow><mrow><mi>d</mi><mi>n</mi></mrow></msub></mrow></math></span>.</div></div>","PeriodicalId":20050,"journal":{"name":"Physica D: Nonlinear Phenomena","volume":"476 ","pages":"Article 134692"},"PeriodicalIF":2.7000,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica D: Nonlinear Phenomena","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167278925001691","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

Transport across a transverse magnetic field of two-dimensional strongly coupled complex (dusty) plasma is studied using molecular dynamics simulations. In the collisionless undamped regime, the dust particles merely show radial pulsations in their position. This has been identified with the gyro motion of the dust particles. However, an additional damping process (which may arise due to dust-neutral collision) results in a diffusive transport. Detailed simulation studies have been carried out to obtain the scaling of the diffusion coefficient with respect to the magnetic field and the collision frequency. These scalings are found to be distinct for the two regimes of

ω_{c d} ≪ ν_{d n}

and

ω_{c d} ≫ ν_{d n}

查看原文本刊更多论文

二维磁化尘埃等离子体云的扩散输运

利用分子动力学模拟研究了二维强耦合复等离子体在横向磁场中的输运。在无碰撞无阻尼状态下，尘埃粒子仅在其位置上显示径向脉动。这与尘埃粒子的陀螺运动是一致的。然而，额外的阻尼过程（可能由于粉尘中性碰撞而产生）导致扩散输运。为了得到扩散系数与磁场和碰撞频率的关系，进行了详细的仿真研究。这些标度在ωcd≪νdn和ωcd²νdn两种情况下是不同的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Physica D: Nonlinear Phenomena 物理-物理：数学物理

CiteScore

7.30

自引率

7.50%

发文量

213

审稿时长

65 days

期刊介绍： Physica D (Nonlinear Phenomena) publishes research and review articles reporting on experimental and theoretical works, techniques and ideas that advance the understanding of nonlinear phenomena. Topics encompass wave motion in physical, chemical and biological systems; physical or biological phenomena governed by nonlinear field equations, including hydrodynamics and turbulence; pattern formation and cooperative phenomena; instability, bifurcations, chaos, and space-time disorder; integrable/Hamiltonian systems; asymptotic analysis and, more generally, mathematical methods for nonlinear systems.