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Title: Microparticle injection effects on microwave transmission through an overly dense plasma layer

Microparticles injected into a plasma have been shown to deplete the free electron population as electrons are collected through the process of microparticles charging to the plasma floating potential. However, these charged microparticles can also act to scatter electromagnetic signals. These experiments investigate microwave penetration through a previously impenetrable overly dense plasma layer as microparticles are injected and the physical phenomena associated with the competing processes that occur due to electron depletion and microwave scattering. The timescales for when each of these competing processes dominates is analyzed in detail. It was found that while both processes play a significant and dominant role at different times, ultimately, transmission through this impenetrable plasma layer can be significantly increased with microparticle injection.
Authors:
;  [1] ;  [2] ;  [3]
  1. Naval Research Laboratory, Washington, DC 20375 (United States)
  2. Wittenberg University, Springfield, Ohio 45501 (United States)
  3. Sotera Defense Solutions, Herndon, Virginia 20171 (United States)
Publication Date:
OSTI Identifier:
22408384
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRONS; INJECTION; LAYERS; MICROWAVE RADIATION; PARTICLES; PLASMA; PLASMA POTENTIAL; SCATTERING; SIGNALS; TRANSMISSION