Now showing items 1-20 of 51

  • Slow Plastic Deformation (Creep) of 2D Dusty Plasma Solids 

    Hartmann, P.; Kovacs, A. Z.; Douglass, A. M.; Carmona-Reyes, J.; Matthews, L. S.; Hyde, T. W. (Physical Review Letters, 201-07-09)
    We report complex plasma experiments, assisted by numerical simulations, providing an alternative qualitative link between the macroscopic response of polycrystalline solid matter to small shearing forces and the possible ...
  • Gravitoelectrodynamics of Charged Grains in Saturn's F Ring: Encounters with Prometheus and Pandora 

    Matthews, Lorin; Hyde, Truell (Journal of Physics A, 2003-09-12)
    The dynamics of Saturn's F ring have been a matter of curiosity ever since Voyagers 1 and 2 sent back pictures of the ring's unusual features. Some of these images showed three distinct ringlets with the outer two displaying ...
  • A model of coagulation in dust clouds during grain charging 

    Barge, Laura; Matthews, Lorin; Hyde, Truell (Advances in Space Research, 2004)
    Initially uncharged grains in space and laboratory plasma environments become charged due to currents driven by potential differences in the dusty plasma. Certain macroscopic effects such as coagulation of smaller grains ...
  • Finite coulomb crystal formation 

    Vasut, John; Hyde, Truell; Barge, Laura (Advances in Space Research, 2004)
    Dust particles immersed within a plasma environment, such as those found in planetary rings or comets, will acquire an electric charge. If the ratio of the inter-particle potential energy to average kinetic energy is large ...
  • Charged Grains In Saturn's F-Ring: Interaction With Saturn's Magnetic Field 

    Matthews, Lorin; Hyde, Truell (Advances in Space Research, 2004)
    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 ...
  • Effect of the Charge-Dipole Interaction on the Coagulation of Fractal Aggregates 

    Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2004)
    A numerical model with broad applications to complex (dusty) plasmas is presented. The self-consistent N-body code allows simulation of the coagulation of fractal aggregates, including the charge-dipole interaction of the ...
  • Dusty Plasma Correlation Function Experiment 

    Smith, Bernard; Vasut, John; Matthews, Lorin; Hyde, Truell; Reay, Jerry; Cook, Mike; Schmoke, Jimmy (Advances in Space Research, 2004)
    Dust particles immersed within a plasma environment, such as those in protostellar clouds, planetary rings or cometary environments, will acquire an electric charge. If the ratio of the inter-particle potential energy to ...
  • Digital Imaging and Analysis of Dusty Plasmas 

    Boesse, Carolyn; Henry, Michael; Hyde, Truell; Matthews, Lorin (Advances in Space Research, 2004)
    Dust particles immersed within a plasma environment, such as those found in planetary rings or cometary environments, will acquire an electric charge. If the ratio of interparticle potential energy to average kinetic energy ...
  • Effect of Multi-Sized Dust Distribution on Local Plasma Sheath Potentials 

    Sun, Meihong; Matthews, Lorin; Hyde, Truell (Advances in Space Research, 2006)
    This work investigates the modification of a plasma sheath in a complex plasma due to the presence of dust particles with a specified size distribution. A self-consistent model for the plasma sheath is combined with a ...
  • Dynamics of a Dust Crystal with Two Different Size Dust Species 

    Matthews, Lorin; Qiao, Ke; Hyde, Truell (Advances in Space Research, 2006)
    A self-consistent 3D model for a complex (dusty) plasma is used to study the effects of multiple-sized dust grains in a dust crystal. In addition to the interparticle forces, which interact through a Yukawa potential, the ...
  • Formation of Cosmic Dust Bunnies 

    Matthews, Lorin; Hayes, Ryan; Freed, Michael; Hyde, Truell (IEEE Transactions on Plasma Science, 2007)
    Planetary formation is an efficient process now thought to take place on a relatively short astronomical time scale. Recent observations have shown that the dust surrounding a protostar emits more efficiently at longer ...
  • Phase Transitions in a Dusty Plasma with Two Distinct Particle Sizes 

    Smith, Bernard; Hyde, Truell; Matthews, Lorin; Reay, Jerry; Cook, Mike; Schmoke, Jimmy (Advances in Space Research, 2008)
    In semiconductor manufacturing, contamination due to particulates significantly decreases the yield and quality of device fabrication, therefore increasing the cost of production. Dust particle clouds can be found in almost ...
  • Charging and Growth of Fractal Dust Grains 

    Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2008-02)
    The structure and evolution of aggregate grains formed within a plasma environment are dependent on the charge acquired by the micron-sized dust grains during the coagulation process. The manner in which the charge is ...
  • Simulation of dust voids in complex plasmas 

    Goedheer, Jan Willem; Land, Victor (IOP Publishing, 2008-11-04)
    In dusty radio-frequency (RF) discharges under micro-gravity conditions often a void is observed, a dust free region in the discharge center. This void is generated by the drag of the positive ions pulled out of the ...
  • How to make large, void-free dust clusters in dusty 

    Land, Victor; Goedheer, Willem Jan (IOP publishing, 2008-12-18)
    Collections of micrometer-sized solid particles immersed in plasma are used to mimic many systems from solid state and fluid physics, due to their strong electrostatic interaction, their large inertia, and the fact that ...
  • Modelling of Voids in Complex Radio Frequency Plasmas 

    Goedheer, Willem Jan; Land, Victor; Venema, Jan (WILEY-VCH, 2009-06-02)
    In this paper hydrodynamic and kinetic approaches to model low pressure capacitively coupled complex radiofrequency discharges are discussed and applied to discharges under microgravity. Experiments in the PKENefedov reactor ...
  • Experimental and computational characterization of a modified GEC cell for dusty plasma experiments 

    Land, Victor; Shen, Erica; Smith, Bernard; Matthews, Lorin; Hyde, Truell (New Journal of Physics, 2009-06-12)
    A self-consistent fluid model developed for simulations of microgravity dusty plasma experiments has for the first time been used to model asymmetric dusty plasma experiments in a modified Gaseous Electronics Conference ...
  • Effect of Dipole-Dipole Charge Interactions on Dust Coagulation 

    Matthews, Lorin; Hyde, Truell (New Journal of Physics, 2009-06-16)
    This study examines the effect that dipole–dipole charge interactions between fractal aggregates have on the growth of dust grains. Aggregates in a plasma or radiative environment will have charge distributed over their ...
  • Hydrodynamic and kinetic modelling of complex radio-frequency plasmas 

    Goedheer, Willem Jan; Land, Victor; Venema, Jan (IOP publishing, 2009-09-18)
    In this paper hydrodynamic and kinetic approaches to model low-pressure capacitively coupled complex radio-frequency discharges are discussed and applied to discharges under micro-gravity. Complex plasmas contain dust ...
  • Probing the sheath electric field using thermophoresis in dusty plasma 

    Land, Victor; Smith, Bernie; Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2010-04)
    A self-consistent dusty plasma fluid model has been extended to incorporate all the oble gases as the carrier gas. An analysis of void closure in complex plasma composed of these gases over a wide range of experimental ...