41 citations · 138 across the 14 of their papers we have counts for
14 papers
Ion firehose and ion cyclotron instability with subtracted-Kappa distributions
Luiz F. Ziebell, Rudi Gaelzer, Danny Summers
In the present paper we discuss numerical solutions of the dispersion relation for electromagnetic waves propagating along the lines of an ambient magnetic field, considering param…
Collisional charging of dust particles by suprathermal particles. I -- Standard anisotropic Kappa distributions
Luiz Fernando Ziebell, Rudi Gaelzer
We study the effect of the velocity distributions of the plasma particles on the equilibrium charge of dust particles which suffer collisional charging, considering different forms…
Influence of plasma particle flow on dust grain charging and on particle number density
L. B. De Toni, L. F. Ziebell, R. Gaelzer
This study explores the dynamic evolution of dust electrical potential and plasma particle number densities with a focus on the charging of dust grains through electron and ion abs…
Collisional charging of dust particles by suprathermal plasmas. II -- Regularized Kappa distributions
Rudi Gaelzer, Luiz Fernando Ziebell
We study the effects of the velocity distribution functions of the plasma particles on the equilibrium charge of dust grains, acquired through inelastic collisions of the particles…
Group velocity of obliquely propagating Alfvén waves in a magnetized dusty plasma
L. B. De Toni, R. Gaelzer, L. F. Ziebell
In this work we investigate the characteristics of the group velocity of obliquely propagating Alfvén waves in a dusty plasma typical of a stellar wind. The dispersion relation is…
Oblique Alfvén waves in a stellar wind environment with dust particles charged by inelastic collisions and by photoionization
L. B. De Toni, R. Gaelzer, L. F. Ziebell
The characteristics of Alfvén waves propagating in a direction oblique to the ambient magnetic field in a stellar wind environment are discussed. A kinetic formulation for a magnet…
Particle-in-cell and weak turbulence simulations of plasma emission
Sang-Yun Lee, L. F. Ziebell, P. H. Yoon +2
The plasma emission process, which is the mechanism for solar type II and type III radio bursts phenomena, is studied by means of particle-in-cell and weak turbulence simulation me…
The oblique firehose instability in a bi-kappa magnetized plasma
Anelise Ramires Meneses, Rudi Gaelzer, Luiz Fernando Ziebell
In this work, we derive a dispersion equation that describes the excitation of the oblique (or Alfvén) firehose instability in a plasma that contains both electron and ion species…
Weakly turbulent plasma processes in the presence of inverse power-law velocity tail population
S. F. Tigik, L. T. Petruzzellis, L. F. Ziebell +2
Observations show that plasma particles in the solar wind frequently display power-law velocity distributions, which can be isotropic or anisotropic. Particularly, the velocity dis…
Collisional damping rates for plasma waves
S. F. Tigik, L. F. Ziebell, P. H. Yoon
The distinction between the plasma dynamics dominated by collisional transport versus collective processes has never been rigorously addressed until recently. A recent paper [Yoon…
Generation of Suprathermal Electrons by Collective Processes in Collisional Plasma
Sabrina F. Tigik, Luiz F. Ziebell, Peter H. Yoon
The ubiquity of high-energy tails in the charged particle velocity distribution functions observed in space plasmas suggests the existence of an underlying process responsible for…
Electromagnetic ion-cyclotron instability in a dusty plasma with product-bi-kappa distributions for the plasma particles
Michel S. dos Santos, Luiz F. Ziebell, Rudi Gaelzer
We study the dispersion relation for parallel propagating ion-cyclotron (IC) waves in a dusty plasma, considering situations where the velocity dispersion along perpendicular direc…
The general dielectric tensor for bi-kappa magnetized plasmas
Rudi Gaelzer, Luiz Fernando Ziebell, Anelise Ramires Meneses
In this paper we derive the dielectric tensor for a plasma containing particles described by an anisotropic superthermal (bi-kappa) velocity distribution function. The tensor compo…
Obliquely propagating electromagnetic waves in magnetized kappa plasmas
Rudi Gaelzer, Luiz Fernando Ziebell
Velocity distribution functions (VDFs) that exhibit a power-law dependence on the high-energy tail have been the subject of intense research by the plasma physics community. Such f…