Original title: Characterization of fluctuating discharge
Authors: Chumak, Oleksiy ; Hrabovský, Milan
Document type: Papers
Conference/Event: Symposium on Physics of Switching Arc /19./, Nové Město na Moravě (CZ), 2011-09-05 / 2011-09-09
Year: 2011
Language: eng
Abstract: A digital camera coupled with computer has a great potential in an analysis of discharges structures. This work analyzes an approach to visualization of dynamic radiant object. Mapping of brightness uncertainty values is used to show regions of different fluctuation intensity of radiation. The entropy as described by information theory was used as a relevant parameter for an uncertainty value. By a mathematical procedure a relative parameter based on the entropy was evaluated. As result an effects of optics sensitivity or of imperfections of experimental set-up were significantly suppressed.
Keywords: entropy maps; jet fluctuations; Plasma stability; statistical processing
Project no.: CEZ:AV0Z20430508 (CEP), FR-TI2/561 (CEP)
Funding provider: GA MPO
Host item entry: XIXth Symposium on Physics of Switching Arc, ISBN 978-80-214-4293-1

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0203773

Permalink: http://www.nusl.cz/ntk/nusl-80976


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Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers