Dipole–Dipole Interactions of Charged-Magnetic Grains

Dipole - Dipole Interactions of Charged - Magnetic Grains

Granular Flow, Collisional Cooling and Charged Grains

The non-Newtonian character of granular flow in a vertical pipe is analyzed. The time evolution of the flow velocity and the velocity fluctuations (or granular temperature) is derived. The steady state velocity has a power law dependence on the pipe width with an exponent between 3/4 and 3/2. The flow becomes faster the more efficient the collisional cooling is, provided the density remains low...

Charged Grains in Saturn's F-ring: Interaction with Saturn's Magnetic Field

Saturn's dynamic F-Ring still presents a challenge for understanding and explaining the kinematic processes that lead to the changing structure visible in our observations of this ring. This study examines the effect of Saturn's magnetic field on the dynamics of micron-sized grains that may become electrically charged due to interaction with plasma in Saturn's rigidly corotating magnetosphere. ...

Fine jet structure of electrically charged grains in Enceladus’ plume

[1] By traversing the plume erupting from high southern latitudes on Saturn’s moon Enceladus, Cassini orbiter instruments can directly sample the material therein. Cassini Plasma Spectrometer, CAPS, data show that a major plume component comprises previously-undetected particles of nanometer scales and larger that bridge the mass gap between previously observed gaseous species and solid icy gra...

Nonlinear phenomena in screening of highly charged grains in plasmas

Nonlinear effects in screening a high-Z grain immersed in a plasma background were investigated by means of microscopic Monte-Carlo simulations and within the Poisson-Boltzmann theory. A distinct difference from the linear Debye-H ¨ uckel approximation was detected in the case of a strong plasma-grain coupling. It effected in the accumulation of the induced plasma charge on the grain surface, a...