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Title: Color-based tracking of plasma dust particles

Color-based tracking to observe agglomeration of deposited particles inside a compact planar magnetron during plasma discharge was done by creating high dynamic range (HDR) images of photos captured by a Pentax K10D digital camera. Carbon erosion and redeposition was also monitored using the technique. The HDR images were subjected to a chromaticity-based constraint discoloration inside the plasma chamber indicating film formation or carbon redeposition. Results show that dust deposition occurs first near the evacuation pumps due to the pressure gradient and then accumulates at the positively charged walls of the chamber. This method can be applied to monitor dust formation during dusty plasma experiments without major modification of plasma devices, useful especially for large fusion reactors.
Authors:
; ;  [1] ; ;  [2]
  1. National Institute of Physics, University of the Philippines, Diliman, Quezon City 1101 (Philippines)
  2. Graduate School of Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321 (Japan)
Publication Date:
OSTI Identifier:
22252074
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 2; Other Information: (c) 2014 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; CARBON; COLOR; DUSTS; MAGNETRONS; PLASMA; PRESSURE GRADIENTS; THERMONUCLEAR REACTORS