Twisted dust acoustic waves in dusty plasmas

被引：32
作者：
Shukla, P. K. [1 ,2 ,3 ,4 ]
机构：
[1] Ruhr Univ Bochum, Fac Phys & Astron, Int Ctr Adv Studies Phys Sci, D-44780 Bochum, Germany
[2] Ruhr Univ Bochum, Fac Phys & Astron, Inst Theoret Phys, D-44780 Bochum, Germany
[3] Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA
[4] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA
来源：
PHYSICS OF PLASMAS | 2012年 / 19卷 / 08期
关键词：
ORBITAL ANGULAR-MOMENTUM; ONE-COMPONENT PLASMA; GLOW-DISCHARGE; COULOMB CRYSTALLIZATION; SOLAR-SYSTEM; PARTICLES; DYNAMICS; STATE; INSTABILITIES; CRYSTALS;
D O I：
10.1063/1.4746091
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：
We examine linear dust acoustic waves (DAWs) in a dusty plasma with strongly correlated dust grains, and discuss possibility of a twisted DA vortex beam carrying orbital angular momentum (OAM). For our purposes, we use the Boltzmann distributed electron and ion density perturbations, the dust continuity and generalized viscoelastic dust momentum equations, and Poisson's equation to obtain a dispersion relation for the modified DAWs. The effects of the polarization force, strong dust couplings, and dust charge fluctuations on the DAW spectrum are examined. Furthermore, we demonstrate that the DAW can propagate as a twisted vortex beam carrying OAM. A twisted DA vortex structure can trap and transport dust particles in dusty plasmas. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4746091]
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页数：5
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