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Title: Fractal dust grains in plasma

Fractal dust grains of different shapes are observed in a radially confined magnetized radio frequency plasma. The fractal dimensions of the dust structures in two-dimensional (2D) horizontal dust layers are calculated, and their evolution in the dust growth process is investigated. It is found that as the dust grains grow the fractal dimension of the dust structure decreases. In addition, the fractal dimension of the center region is larger than that of the entire region in the 2D dust layer. In the initial growth stage, the small dust particulates at a high number density in a 2D layer tend to fill space as a normal surface with fractal dimension D = 2. The mechanism of the formation of fractal dust grains is discussed.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ;  [5]
  1. College of Science, China Agricultural University, Beijing 100083 (China)
  2. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083 (China)
  3. Institute of Complexity Science, Qingdao University, Qingdao 266071 (China)
  4. Department of Physics, Beijing University of Chemical Technology, Beijing 100029 (China)
  5. Institute of Physics, Chinese Academy of Science, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22086194
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 19; Journal Issue: 9; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DUSTS; FRACTALS; GRAIN DENSITY; HIGH-FREQUENCY DISCHARGES; PARTICULATES; PLASMA; RADIOWAVE RADIATION; TWO-DIMENSIONAL CALCULATIONS