Kinetic study of electrostatic twisted waves instability in nonthermal dusty plasmas

Abstract

The kinetic theory of electrostatic twisted waves' instability in a dusty plasma is developed in the presence of orbital angular momentum of the helical (twisted) electric field in plasmas with kappa distributed electrons, ions, and dust particles. The kappa distributed electrons are considered to have a drift velocity. The perturbed distribution function and helical electric field are decomposed by Laguerre-Gaussian mode functions defined in cylindrical geometry. The Vlasov-Poisson equation is obtained and solved analytically to investigate the growth rates of the electrostatic twisted waves in a non-thermal dusty plasma. The growth rates of the dust ion acoustic twisted mode (DIATM) and dust acoustic twisted mode (DATM) are obtained analytically and also pictorial presented numerically. The instability condition for the DIATM and DATM is also discussed with different plasma parameters. The growth rates of DIATM and DATM are larger when the drifted electrons are non-Maxwellian distributed and smaller for the Maxwellian distributed drifted electrons in the presence of the helical electric field.

Twisted waves and instabilities in a permeating dusty plasma

“…It is believed that the predominant constituents include charged grains and various ions of hydrogen, carbon, water, oxygen, sodium, etc. with pick-up ions of H from the solar wind plasma (Balsiger et al 1986). Similar observations of a coma have been revealed by the Rosetta spacecraft of the European Space Agency (ESA) orbiting close to comet 67P/Churyumov Gerasimenko through its ROSINA experiment (Wurz et al 2015).…”

“…The instability of twisted waves in the kappa distributed multi-component dusty plasma was also investigated by Arshad et al. (2017), to studying the dependence of the growth rate on various plasma parameters.…”

Quasi-electrostatic twisted waves in Lorentzian dusty plasmas

“…The modified resonance condition ω ¼ kv z þ lq θ v θ resembles the Landau cyclotron resonance for the magneto plasma case (Alexandrov et al, 1984). By substituting the value of non-gyrotropic Kappa distribution in above equation, we obtain the following form of modified plasma dispersion function in the presence of helical electric field (Arshad et al, 2017);…”

“…The dielectric functions of the quasi-electrostatic twisted (helical) modes in non-Maxwellian (Kappa distributed) dusty plasmas i.e., dust ion acoustic (DIA) and dust acoustic (DA) twisted (helical) modes can be written as (Arshad et al, 2017)…”

Spreading Properties of a Lorentz-Gauss Vortex Beam Propagating in Biological Tissues

“…Today, the properties of electromagnetic beams have been investigated, which are used in different contexts, such as twisted electromagnetic waves in plasma [1,2]. On the other hand, optical waves are also electromagnetic waves.…”