Abstract Within the framework of Einstein-Maxwell theory geometric properties charged rotating discs dust, using a post-Newtonian expansion up to tenth order, are discussed. Investigating disc’s proper radius and circumference allows us address questions related Ehrenfest paradox. In Newtonian limit there is an agreement with disc from special relativity. The dust also possesses material-like p...

The mode spectra of small N=3 clusters of dust particles with fluctuating charges are analysed. Building on previous results investigating the influence of charge variance and correlation, efforts were made to quantify these effects on mode spectra via affected mode properties. This allows a more quantitative assessment of results, which is useful particularly as the number of particles in a cl...

Dust grains — objects of different shapes with a size distribution from micro to nanometers — are generally considered as a part of many space as well as laboratory plasmas. Among various charging processes, electron-induced secondary emission plays an important role wherever plasma contains a noteworthy portion of hot electrons. We have developed a numerical model of charging dust grains due t...

The key parameter driving behavior of dust particles in plasma is their electric charge [1]. Present-day theories as well as experiments are not fully successful in determining its value [2]. Moreover, the theoretical uncertainties are increased in the plasma sheath – a think plasma layer at a wall or electrode. The standard models of dust charging in the plasma sheath usually suppose Maxwellia...

The DuEl (Dust-Electron) device, a modified Penning-Malmberg trap for the confinement of dust-contaminated electron plasmas, is currently under construction at the University of Milano with the aim of investigating the dynamics of magnetized complex (dusty) electron plasmas [1]. The overall behaviour of such plasmas is heavily affected by the addition of a small fraction of micrometric or sub-m...

The ESA meteoroid model predicts impacts of meteoroids in the mass range between 10 to 10 g on spacecraft surfaces. It covers heliocentric distances from 0.3 to 20 AU. Measurements of the dust detector on board the highly successful joint ESA/NASA mission Ulysses have shown, that the flux of meteoroids with masses between 10 and 10 g is, at least in the outer Solar System, dominated by interste...

The monthly total amount of dust fall, as well as its chemical and physical characteristics, was systematically investigated in Shuwaikh city, Kuwait. Dust samples were collected on a monthly basis for the entire year of 2009 and analyzed in the laboratory for water-soluble and water-insoluble matter. Water-insoluble matter represented the major portion of the total annual dust. ANOVAs showed s...

We theoretically investigate conditions for the refraction of long-wavelength dust acoustic waves by arrays of periodic cylinders in a dusty plasma. This is based on a recent analysis of the refraction of shallow water waves by periodic cylinder arrays (Hu and Chan, Phys. Rev. Lett. 95 (2005), 154501). In the dusty plasma case, however, the boundary conditions involve the formation of voids aro...

Dust is a common component in plasma systems, from silicon chip manufacturing to comet tails. Dust particle clouds in each of these systems can contaminate synthesis techniques or define the properties of protostellar clouds. Experiments have been conducted to describe the crystal structure within the plasma potential well, but more work needs to be done in order to describe the effect of DC bi...

[1] We report results of a field campaign conducted in the Nevada desert with a suite of electric field instruments consisting of a field mill (FM) and a short dipole antenna (SDA). Furthermore, we show that a combination of the measurements of these two instruments allows the estimation of the electric resistivity of air, an important quantity that is extremely difficult to measure near the Ea...