Dusty plasmas are susceptible to the formation of a ‘‘void,’’ a centimeter-size region within the plasma that is free of dust particles. The boundary between the dust-free plasma ~void! and the dusty plasma is typically quite sharp. Praburam and Goree first reported the appearance of a spoke-shaped, dust-free region in a cloud of 100-nm carbon particles in a radio-frequency discharge formed bet...

Sweeping double probe measurements in an atmospheric pressure direct current vortex-stabilized plasma jet are reported (plasma conditions: 100 A discharge current, N2 gas flow rate of 25 Nl/min, thoriated tungsten rod-type cathode, copper anode with 5 mm inner diameter). The interpretation of the double probe characteristic was based on a generalization of the standard double floating probe for...

Scanning Impedance Microscopy (SIM) is one of the novel scanning probe microscopy (SPM) techniques, which has been developed to taking image from sample surface, providing quantitative information with high lateral resolution on the interface capacitance, and investigating the local capacitance–voltage (C–V) behavior of the interface and AC transport properties. The SIM is an ordinary AFM equip...

The mass of the hydrogen isotope in micrometer-sized aqueous droplets introduced into an ICP has been found to affect degree resulting plasma perturbation. Studied perturbations include local cooling, shrinkage due thermal pinching, and changes impedance. cooling effect caused by a vaporizing aerosol droplet was be similar between H2O D2O. This finding is likely result heat capacities vaporizat...

Langmuir probes are often used to obtain measurements of temperature and density in plasma. Many believe that the standard triple probe does not give a correct measurement of temperature since it samples only the fastest electrons, and that another type of probe needs to be designed that would sample more dominant, bulk, electrons in the plasma. My project this summer has been to make an asymme...

Plasma containing relativistic particles appears in various forms in the inter galactic medium (IGM): As radio plasma released by active radio galaxies, as fossil radio plasma from former radio galaxies – so called radio ghosts–, as cluster radio relics in some clusters of galaxies, and as cluster radio halos. The impact of the different forms of radio plasma on the IGM and their use as diagnos...

Electromagnetically induced transparency ~EIT!, a phenomenon well known in atomic systems, has a natural analogy in a classical magnetized plasma. The magnetized plasma has a resonance for right-hand polarized electromagnetic waves at the electron cyclotron frequency V0 , so that a probe wave with frequency v15V0 cannot propagate through the plasma. The plasma can be made transparent to such a ...