Effect of ion and electron beam on kinetic Alfven wave in an inhomogeneous magnetic field

被引：3

作者：

Dwivedi, A. K. ^{[1
]}

Kumar, Sunil ^{[1
]}

Tiwari, M. S. ^{[2
]}

机构：

[1] Harish Chandra PG Coll, Dept Phys, Varanasi 221001, Uttar Pradesh, India

[2] Dr Hari Singh Gour Vishwavidyalaya, Dept Phys, Sagar 470003, India

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2014年 / 350卷 / 02期

关键词：

Kinetic Alfven wave; Ion and electron beam; Auroral currents; Magnetic field inhomogeneity; PARTICLE ASPECT ANALYSIS; SHEET BOUNDARY-LAYER; PLASMA SHEET; AURORAL ACCELERATION; ALIGNED CURRENTS; POYNTING FLUX; DRIFT-WAVE; MAGNETOSPHERE; INSTABILITY; MAGNETOPLASMA;

D O I：

10.1007/s10509-013-1760-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Kinetic Alfven waves are examined in the presence of electron and ion beam and an inhomogeneous magnetic field with bi-Maxwellian distribution function. The theory of particle aspect analysis is used to evaluate the trajectories of the charged particles. The expressions for the field-aligned currents, perpendicular currents (with respect to B (0)), dispersion relation and growth/damping rate with marginal instability criteria are derived. The effect of electron and ion beam and inhomogeneity of magnetic field are discussed. The results are interpreted for the space plasma parameter appropriate to the auroral acceleration region of the earth's magnetoplasma.

引用

页码：547 / 556

页数：10

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