Modeling agglomeration of dust particles in plasma

L.S. Matthews, V. Land, Q. Ma, J.D. Perry, T.W. Hyde

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Citations (Scopus)

Abstract

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) charge interactions between fractal aggregates lead to rotations of the grains as they interact. Other properties of the dust grains also influence the agglomeration process, such as the monomer shape (spherical or ellipsoidal) or the presence of magnetic material. Finally, the plasma and grain properties also determine the morphology of the resultant aggregates. Porous and fluffy aggregates are more strongly coupled to the gas, leading to reduced collisional velocities, and greater collisional cross sections. These factors in turn can determine the growth rate of the aggregates and evolution of the dust cloud. This paper gives an overview of the numerical and experimental methods used to study dust agglomeration at CASPER and highlights some recent results.

Original languageEnglish
Title of host publicationDusty/Complex Plasmas: Basic and Interdisciplinary Research: Sixth International Conference on the Physics of Dusty Plasmas, Garmisch-Partenkirchen, Germany, 16-20 May 2011
Place of PublicationNew York
PublisherAmerican Institute of Physics
Pages60-65
Number of pages6
ISBN (Print)9780735409675
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event6th International Conference on the Physics of Dusty/Complex Plasmas: Basic and Interdisciplinary Research, ICPDP6 - Garmisch-Partenkirchen, Germany
Duration: 16 May 201120 May 2011

Publication series

NameAIP Conference Proceedings
Volume1397

Conference

Conference6th International Conference on the Physics of Dusty/Complex Plasmas: Basic and Interdisciplinary Research, ICPDP6
Country/TerritoryGermany
CityGarmisch-Partenkirchen
Period16/05/1120/05/11

Keywords

  • coagulation
  • dust charging
  • dusty plasma

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