Screened Coulomb potential in a flowing magnetized plasma

Abstract

The electrostatic potential of a moving dust grain in a complex plasma with magnetized ions is computed using linear response theory, thereby extending our previous work for unmagnetized plasmas [P. Ludwig et al., New J. Phys. 14, 053016 (2012)]. In addition to the magnetic field, our approach accounts for a finite ion temperature as well as ion-neutral collisions. Our recently introduced code \texttt{Kielstream} is used for an efficient calculation of the dust potential. Increasing the magnetization of the ions, we find that the shape of the potential crucially depends on the Mach number $M$. In the regime of subsonic ion flow ($M<1$), a strong magnetization gives rise to a potential distribution that is qualitatively different from the unmagnetized limit, while for $M>1$ the magnetic field effectively suppresses the plasma wakefield.

References in corpus (8)

• On the Wake Structure in Streaming Complex Plasmas
• Intergrain forces in low Mach-number plasma wakes
• Collisional Effects on Nonlinear Ion Drag Force for Small Grains
• Simulating the dynamics of complex plasmas
• Shielding of a small charged particle in weakly ionized plasmas
• Dressed test particles, oscillation centres and pseudo-orbits
• Wakes in inhomogeneous plasmas
• Ion-Wake induced anomaly of Dust Lattice Mode in presence of external Magnetic field

Cited by in corpus (7)

• The Effect of Correlations on the Heat Transport in a Magnetized Plasma
• The ion potential in warm dense matter: wake effects due to streaming degenerate electrons
• Friction Force in Strongly Magnetized Plasmas
• Collision induced amplification of wakes in streaming plasmas
• Wake effects of a stationary charged grain in streaming magnetized ions
• Effects of Coulomb Coupling On Friction In Strongly Magnetized Plasmas
• Transverse magnetic field influence on wakefield in complex plasmas