Now showing items 1-20 of 35

  • Agglomeration of Dust Particles in the Lab 

    Matthews, Lorin; Carmona-Reyes, Jorge; Land, Victor; Hyde, Truell (AIP Conference Proceedings, 2011)
    Dust aggregates are formed in a laboratory plasma as monodisperse spheres are accelerated in a self-excited dust density wave. The asymmetric charge on the aggregates causes them to rotate as they interact with the sheath ...
  • Astrophysical Applications of Dusty Plasma Physics 

    Barnes, Will (2013-05-24)
    An ionized gas is a plasma, a sea of ions and electrons. The introduction of dust into the ionized gas forms a dusty plasma, a colloidal mixture of micron- to submicronsized grains and charged particles. The dust becomes ...
  • 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 ...
  • Charging and coagulation of dust in protoplanetary environments 

    Matthews, Lorin; Land, Victor; Hyde, Truell (Astrophysical Journal, 2012-01-01)
    Combining a particle–particle, particle–cluster, and cluster–cluster agglomerationmodel with an aggregate charging model, the coagulation and charging of dust particles in plasma environments relevant for protoplanetary ...
  • 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 ...
  • Charging of aggregate grains in astrophysical environments 

    Ma, Qianyu; Matthews, Lorin; Land, Victor; Hyde, Truell (Astrophysical Journal, 2013-02-01)
    The charging of dust grains in astrophysical environments has been investigated with the assumption that these grains are homogeneous spheres. However, there is evidence which suggests that many grains in astrophysical ...
  • Crystallization Dynamics of a Single Layer Complex Plasma 

    Hartmann, Peter; Douglass, Angela; Carmona-Reyes, Jorge; Matthews, Lorin; Hyde, Truell; Kovacs, Aniko; Donko, Zoltan (Physical Review Letters, 2010-09)
    We report a series of complex (dusty) plasma experiments, aimed at the study of the detailed time evolution of the recrystallization process following a rapid quench of a two-dimensional dust liquid. The experiments were ...
  • Determination of the levitation limits of dust particles within the sheath in complex plasma experiments 

    Douglass, Angela; Land, Victor; Qiao, Ke; Matthews, Lorin; Hyde, Truell (Physics of Plasmas, 2012-01-23)
    Experiments are performed in which dust particles are levitated at varying heights above the powered electrode in a radio frequency plasma discharge by changing the discharge power. The trajectories of particles dropped ...
  • 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 ...
  • Dipole-dipole interactions of charged magnetic grains 

    Perry, Jonathan; Matthews, Lorin; Hyde, Truell (IEEE, 2010-04)
    The interaction between dust grains is an important process in fields as diverse as planetesimal formation or the plasma processing of silicon wafers into computer chips. This interaction depends in large part on the ...
  • Dust particle charge in plasma with ion flow and electron depletion near plasma boundaries 

    Douglass, Angela; Land, Victor; Matthews, Lorin; Hyde, Truell (Physics of Plasmas, 2011-08-01)
    The charge on micrometer-sized dust particles suspended in plasma above the powered electrode of radio-frequency discharges is studied. Using a self-consistent fluid model, the plasma profiles above the electrode are ...
  • 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 ...
  • 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 ...
  • 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 ...
  • The effect of dust charge variation, due to ion flow and electron depletion, on dust levitation 

    Land, Victor; Douglass, Angela; Qiao, Ke; Matthews, Lorin; Hyd, Truell (AIP Conference Proceedings, 2011)
    Using a fluid model, the plasma densities, electron temperature and ion Mach number in front of a powered electrode in different plasma discharges is computed. The dust charge is computed using OML theory for Maxwellian ...
  • The effect of electrode heating on the discharge parameters in complex plasma experiments 

    Land, Victor; Carmona Reyes, Jorge; Creel, James; Schmoke, Jimmy; Cook, Mike; Matthews, Lorin; Hyde, Truell (IOP Publishing, 2011-01-25)
    Thermophoresis is a tool often applied in complex plasma experiments. One of the usual stated benefits over other experimental tools is that electrode temperature changes required to induce thermophoresis do not directly ...
  • 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 ...
  • 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 ...
  • Effects of monomer shape on the formation of aggregates from a power law monomer distribution 

    Perry, Jonathan; Kimery, Jesse; Matthews, Lorin; Hyde, Truell (New Journal of Physcis, 2013)
    The coagulation of dust aggregates is an important process in many physical systems such as the Earth’s upper atmosphere, comet tails and protoplanetary discs. Numerical models which study the aggregation in these systems ...
  • 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 ...