Diffusion coefficient of three-dimensional Yukawa liquids

Abstract

The purpose of this work is an investigation of the diffusion coefficient of the dust component in complex plasma. The computer simulation of the Yukawa liquids was made on the basis of the Langevin equation, which takes into account the influence of buffer plasma on the dust particles dynamics. The Green-Kubo relation was used to calculate the diffusion coefficient. Calculations of the diffusion coefficient for a wide range of the system parameters were performed. Using obtained numerical data, we constructed the interpolation formula for the diffusion coefficient. We also show that the interpolation formula correctly describes experimental data obtained under microgravity conditions. V C 2013 AIP Publishing LLC. [http://dx.

Effect of Buffer Gas Induced Friction on the Caging of Particles in a Dusty Plasma

“…The effect of friction starts to play a role at θ ∼ 0.03, above this value the caging time remarkably increases with θ. Bearing in mind the connection between the caging effect and the self-diffusion in the system [14] our observation of the increasing caging time at higher friction parallels the finding of the decrease of the self-diffusion coefficient with increasing friction in a 3D dusty plasma [17,18], as well as in a 2D system, where a transition from superdiffusion to normal diffusion and to subdiffusion with the increase of the friction coefficient was found [19]. Figure 5 shows values of the caging time ω p t cage (Γ, κ, θ) normalized by ω p t cage (Γ, κ, θ = 0.001).…”

Magnetic and nonthermal effects on the dispersion properties of ion-cyclotron surface wave in a semi-bounded generalized Lorentzian plasma

“…Recently, the investigation of various physical processes in dense semiclassical and quantum plasmas has received a considerable attention since semiclassical and quantum plasmas have been found in various laboratory nano-scale objects such as nano-wires, quantum dot, semiconductor devices, and laser produced plasmas as well as in astrophysical compact objects. [21][22][23][24][25][26][27] Hence, the investigation of the influence of magnetic field strength and nonthermal shielding on the ion-cyclotron surface wave propagating along the interface of a semi-bounded semiclassical Lorentzian plasma will be treated elsewhere since the information of the frequency spectra of surface waves would be useful to explore physical characteristics and properties of semiclassical plasmas.…”

Quantum tunneling resonant electron transfer process in Lorentzian plasmas

“…Recent years, excellent works on the investigation of effective interaction potential have been carried out in various dense semiclassical plasmas. [27][28][29][30][31][32][33] However, the quantum tunneling resonant electron transfer process has not been investigated in semiclassical plasmas. Hence, the influence of quantum diffraction and shielding on the quantum tunneling resonant electron transfer cross section will be treated elsewhere.…”