Scattering of electromagnetic waves by vortex density structures associated with interchange instability: Analytical and large scale plasma simulation results

被引：8

作者：

Sotnikov, V. ^{[1
]}

Kim, T. ^{[1
]}

Lundberg, J. ^{[1
]}

Paraschiv, I. ^{[2
]}

Mehlhorn, T. A. ^{[3
]}

机构：

[1] Air Force Res Lab AFRL RY, Wright Patterson AFB, OH 45433 USA

[2] Univ Nevada, Reno, NV 89557 USA

[3] Naval Res Lab, Washington, DC 20375 USA

来源：

PHYSICS OF PLASMAS | 2014年 / 21卷 / 05期

关键词：

TURBULENCE; DYNAMICS;

D O I：

10.1063/1.4879021

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The presence of plasma turbulence can strongly influence propagation properties of electromagnetic signals used for surveillance and communication. In particular, we are interested in the generation of low frequency plasma density irregularities in the form of coherent vortex structures. Interchange or flute type density irregularities in magnetized plasma are associated with Rayleigh-Taylor type instability. These types of density irregularities play an important role in refraction and scattering of high frequency electromagnetic signals propagating in the earth ionosphere, in high energy density physics, and in many other applications. We will discuss scattering of high frequency electromagnetic waves on low frequency density irregularities due to the presence of vortex density structures associated with interchange instability. We will also present particle-in-cell simulation results of electromagnetic scattering on vortex type density structures using the large scale plasma code LSP and compare them with analytical results. (C) 2014 AIP Publishing LLC.

引用

页数：10