Now showing items 28-47 of 56

  • Glow and Dust in Plasma Boundaries 

    Land, Victor; Douglass, Angela; Qiao, Ke; Zhang, Zhuanhao; Matthews, Lorin; Hyde, Truell W. (IEEE Transactions on Plasma Science, 2013-04)
    The sheath region is probed in different complex plasma experiments using dust particles in addition to the measurement of the optical emission originating from the plasma. The local maximum in the optical emission coincides ...
  • 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 ...
  • Helical Structures in Vertically Aligned Dust Particle Chains in a Complex Plasma 

    Hyde, T. W.; Kong, J.; Matthews, L.S. (Physical Review E, 2013-05-16)
    Self-assembly of structures from vertically aligned, charged dust particle bundles within a glass box placed on the lower, powered electrode of a Gaseous Electronics Conference rf reference cell were produced and examined ...
  • 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 ...
  • 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 ...
  • The influence of monomer shape on aggregate morphologies 

    Perry, Jonathan; Gostomski, Erwin; Matthews, Lorin; Hyde, Truell (Astronomy & Astrophysics, 2012-03)
    Context. The coagulation of dust particles is the initial step in planetary formation, with the precursors to planetesimals believed to form via the collisions of micron and submicron sized dust particles in the disk ...
  • Interaction force in a vertical dust chain inside a glass box 

    Kong, J.; Qiao, K.; Matthews, L.S.; Hyde, T.W. (Physical Review E, 2014-07-31)
    Small number dust particle clusters can be used as probes for plasma diagnostics. The number of dust particles as well as cluster size and shape can be easily controlled employing a glass box placed within a Gaseous ...
  • Measurement of net electric charge and dipole moment of dust aggregates in a complex plasma 

    Yousefi, Raziyeh; Davis, Allen; Carmona-Reyes, Jorge; Matthews, Lorin; Hyde, Truell (Physical Review E, 2014-09-02)
    Understanding the agglomeration of dust particles in complex plasmas requires knowledge of basic properties such as the net electrostatic charge and dipole moment of the dust. In this study, dust aggregates are formed from ...
  • Mode coupling and resonance instabilities in quasi-two-dimensional dust clusters in complex plasmas 

    Qiao, Ke; Kong, J.; Carmona, J.; Matthews, L. S.; Hyde, T. W. (American Physical Society, 2014-09-16)
    Small quasi-two-dimensional dust clusters consisting of three to eleven particles are formed in an argon plasma under varying rf power. Their normal modes are investigated through their mode spectra obtained from tracking ...
  • Mode Couplings and Conversions for Horizontal Dust Particle Pairs in Complex Plasmas 

    Qiao, Ke; Kong, Jie; Zhang, Zhuanhao; Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2013-04)
    The normal modes for horizontal dust particle pairs in a complex plasma are investigated using two methods, a numerical calculation and a molecular dynamics simulation. The ion wakefield downstream of each particle and the ...
  • Mode couplings and resonance instabilities in dust clusters 

    Qiao, Ke; Van Oeveren, E.; Matthews, L.S.; Hyde, T.W. (Physical Review E, 2013-10-16)
    The normal modes for three to seven particle two-dimensional (2D) dust clusters in a complex plasma are investigated using an N-body simulation. The ion wakefield downstream of each particle is shown to induce coupling ...
  • Mode couplings and resonance instabilities in finite dust chains 

    Qiao, K.; Kong, J.; Matthews, L.; Hyde, T. W. (American Physical Society, 2015-05-08)
    Employing a numerical simulation, the normal modes are investigated for finite, one-dimensional horizontal dust chains in complex plasma. Mode couplings induced by the ion flow within the sheath are identified in the mode ...
  • 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 ...
  • Modeling Agglomeration of Dust Particles in Plasma 

    Matthews, Lorin; Land, Victor; Ma, Qianyu; Perry, Jonathan; Hyde, Truell (AIP Conference Proceedings, 2011)
    The charge on an aggregate immersed in a plasma environment distributes itself over the aggregate’s surface; this can be approximated theoretically by assuming a multipole distribution. The dipole-dipole (or higher order) ...
  • 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 ...
  • A New Inductively Driven Plasma Generator (IPG6)—Setup and Initial Experiments 

    Dropmann, Michael; Herdrich, Georg; Laufer, Rene; Puckert, Dominik; Fulge, Hannes; Fasoulas, Stefanos; Schmoke, Jimmy; Cook, Mike; Hyde, Truell W. (IEEE Transactions on Plasma Science, 2013-04)
    As part of the partnership between the Center for Astrophysics, Space Physics and Engineering Research (CASPER) at Baylor University and the Institute of Space Systems (IRS) at the University of Stuttgart, a new design for ...
  • Note on a NAHE Variation 

    Greenwald, Jared; Pechan, Kristen; Renner, Tim; Ali, Tibra; Cleaver, Gerald (2010-07-09)
    We present a variation of the NAHE-basis for free fermionic heterotic string mod- els. By rotating some of boundary conditions of the NAHE periodic/anti-periodic fermions {ym, ym, wm, wm,}, for m = 1 to 6, associated with ...
  • One-dimensional vertical dust strings in a glass box 

    Kong, Jie; Hyde, Truell; Matthews, Lorin; Qiao, Ke; Zhang, Zhuanhao (Physical Review E, 2011-07-28)
    The oscillation spectrum of a one-dimensional vertical dust string formed inside a glass box on top of the lower electrode in a gaseous electronics conference (GEC) reference cell was studied. A mechanism for creating a ...
  • 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 ...
  • Photophoresis on polydisperse basalt microparticles under microgravity 

    Kupper, M.; de Beule, C.; Wurm, G.; Matthews, L.; Kimery, J.; Hyde, T.W. (Journal of Aerosol Science, 2014-10)
    Photophoresis is a force which can dominate the motion of illuminated aerosols in low pressure environments of laboratory experiments, planetary atmospheres or protoplanetary disks. In drop tower experiments we quantified ...