Now showing items 1-20 of 63

    • 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 ...
    • Analysis of Magnetic Field Plasma Interactions Using Micro Particles as Probes 

      Dropmann, Michael; Laufer, Rene; Herdrich, Georg; Matthews, L.S.; Hyde, T. W. (American Physics Society/ Physical Review E, 2015-08-26)
      The interaction between a magnetic field and plasma close to a nonconductive surface is of interest for both science and technology. In space, crustal magnetic fields on celestial bodies without atmosphere can interact ...
    • Branes in the M_D x M_d+ x M_d- Compactification of Type II String on S^1/Z_2 and Their Cosmologicval Applications 

      Devin, Michael; Ali, Tibra; Cleaver, Gerald; Wang, Anzhong; Wu, Qiang (2010-07-09)
      In this paper, we study the implementation of brane worlds in type II string theory. Starting with the NS/NS sector of type II string, we first compactify the (D + d+ + d−)-dimensional spacetime, and reduce the corresponding ...
    • 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 ...
    • Coagulation in the Vicinity of a Gap-Opening Jupiter-Mass Planet 

      Carballido, Augusto (Astrophysical Journal, 2016-06)
      We analyze the coagulation of dust in and around a gap opened by a Jupiter-mass planet. To this end, we carry out a high-resolution magnetohydrodynamic (MHD) simulation of the gap environment, which is turbulent due to the ...
    • 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 ...