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Title: Quasi-discrete particle motion in an externally imposed, ordered structure in a dusty plasma at high magnetic field

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4936244· OSTI ID:22489893
; ; ; ;  [1];  [2];  [3]
  1. Physics Department, Auburn University, Auburn, Alabama 36849 (United States)
  2. Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242 (United States)
  3. Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093 (United States)

Dusty plasmas have been studied in argon, radio frequency (rf) glow discharge plasmas at magnetic fields up to 2.5 T where the electrons and ions are strongly magnetized. Plasmas are generated between two parallel plate electrodes where the lower, powered electrode is solid and the upper electrode supports a dual mesh consisting of #24 brass and #30 aluminum wire cloth. In this experiment, we study the formation of imposed ordered structures and particle dynamics as a function of magnetic field. Through observations of trapped particles and the quasi-discrete (i.e., “hopping”) motion of particles between the trapping locations, it is possible to make a preliminary estimate of the potential structure that confines the particles to a grid structure in the plasma. This information is used to gain insight into the formation of the imposed grid pattern of the dust particles in the plasma.

OSTI ID:
22489893
Journal Information:
Physics of Plasmas, Vol. 22, Issue 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English

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Laboratory space physics: Investigating the physics of space plasmas in the laboratory journal May 2018
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Laboratory Space Physics: Investigating the Physics of Space Plasmas in the Laboratory text January 2018