Using a time-dependent multifluid, magnetohydrodynamic code, we calculated the structure of steady perpendicular and oblique C-type shocks in dusty plasmas. We included relevant processes to describe mass transfer between the different fluids, radiative cooling by emission lines and grain charging and studied the effect of singlesized and multiple sized grains on the shock structure. Our models...

We present a model addressing the possible electrification of Martian dust storms based on the effective electrical charging of an individual dust grain. An upper charge bound on a grain can be determined based on the grain capacitance in the lowpressure Martian atmosphere. It is assumed that treiboelectric and inductive processes, like that presumed operating in terrestrial dust storms, can el...

A self-consistent model of the ambipolar diffusion of electrons and ions in dusty plasmas accounting for the local electric fields, the dust grain charging process, and the interaction of the plasma particles with the dust grains and neutrals is presented. The dependencies of the diffusion coefficient on the interaction of the electrons and ions with the dust grains as well as with the neutrals...

We present a method for calculating the infrared emission from a population of dust grains heated by starlight, including very small grains for which stochastic heating by starlight photons results in hightemperature transients. Because state-to-state transition rates are generally unavailable for complex molecules, we consider model polycyclic aromatic hydrocarbon (PAH), graphitic, and silicat...

Title of Dissertation: MAGNETIC FIELD EFFECTS ON THE MOTION OF CIRCUMPLANETARY DUST Daniel Simon Jontof-Hutter, Doctor of Philosophy, 2012 Dissertation directed by: Professor Douglas P. Hamilton Department of Astronomy Hypervelocity impacts on satellites or ring particles replenish circumplanetary dusty rings with grains of all sizes. Due to interactions with the plasma environment and sunlight...

The research of charging processes of various types of dust grains is important for understanding of the role of dust in dusty plasmas in a space as well as in applications. One of the very important charging process is field ion emission. The field ion emission can limit the positive charge on the dust grain because the positive ions leave a grain surface due to a strong electric field. We ana...

A theoretical investigation has been made of two new ultra-low-frequency electrostatic modes, namely, dust-cyclotron mode and dust-lower-hybrid mode, propagating perpendicular to the external magnetic field, in a self-gravitating magnetized two fluid dusty plasma system. It has been shown that the effect of the self-gravitational force, acting on both dust grains and ions, significantly modifie...