Now showing items 7-26 of 56

  • Cosmic Dust Aggregation with Stochastic Charging 

    Matthews, L.S.; Shotorban, B.; Hyde, T.W. (Astrophysical Journal, 2013-10-04)
    The coagulation of cosmic dust grains is a fundamental process which takes place in astrophysical environments, such as presolar nebulae and circumstellar and protoplanetary disks. Cosmic dust grains can become charged ...
  • 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 as probe for horizontal field distribution in low pressure gas discharges 

    Hartmann, P.; Kovacs, A. Z.; Carmona-Reyes, J.; Matthews, L.S.; Hyde, T.W. (Plasma Sources Science and Technology, 2014-06-23)
    Using dust grains as probes in gas discharge plasma is a very promising, but at the same time very challenging method, as the individual external control of dust grains has to be solved. We propose and demonstrate 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 cavities: Probe-induced and natural 

    Harris, Brandon; Matthews, Lorin S.; Hyde, Truell W. (American Physical Society, 2015-06-22)
    A comprehensive exploration of regional dust evacuation in complex plasma crystals is presented.Voids created in three-dimensional crystals on the International Space Station have provided a rich foundation for experiments, ...
  • 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 ...
  • Electrical Conductivity of the Thermal Dusty Plasma under the Conditions of a Hybrid Plasma Environment Simulation Facility 

    Zhukhovitskii, D.; Petrov, O.; Hyde, T. W.; Herdrich, G.; Laufer, R.; Dropmann, M.; Matthews, L. S. (New Journal of Physcis, 2015-05-27)
    We discuss the inductively heated plasma generator (IPG) facility in application to the generation of the thermal dusty plasma formed by the positively charged dust particles and the electrons emitted by them. We develop ...
  • 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 ...
  • 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 ...
  • Fluid modeling of void closure in microgravity noble gas complex plasmas 

    Land, Victor; Matthews, Lorin; Hyde, Truell; Bolser, Diana (Physics Review E, 2010-05-12)
    A self-consistent dusty plasma fluid model has been extended to incorporate all the noble gases as the carrier gas. An analysis of void closure in complex plasma composed of these gases over a wide range of experimental ...