Discharge fluctuations presentation by entropy maps

0369786 - ÚFP 2012 RIV SK eng C - Conference Paper (international conference)
Chumak, Oleksiy - Hrabovský, Milan
Discharge fluctuations presentation by entropy maps.
Book of Contributed Papers: 18th Symposium on Application of Plasma Processes and Workshop on Plasmas as a Planetary Atmospheres Mimics(SAPP XVIII). Bratislava,: Department of Experimental Physics, Faculty of Mathematics,, 2011 - (Országh, J.; Papp, P.; Matejčík, Š.), s. 215-219. SAPP, SAPP XVIII. ISBN 978-80-89186-77-8.
[Symposium on Application of Plasma Processes Workshop on Plasmas as a Planetary Atmosphere Mimics/18./. Vrátna dolina (SK), 15.01.2011-20.01.2011]
R&D Projects: GA ČR GAP205/11/2070
Institutional research plan: CEZ:AV0Z20430508
Keywords : Discharge stability * plasma fluctuations * statistical processing * entropy maps
Subject RIV: BL - Plasma and Gas Discharge Physics

General statistical procedure for visualization of discharge fluctuations is presented in the paper. It implies mapping of chosen statistical parameter characterizing local brightness variation. It is shown that Shannon entropy that is adopted from the information theory is the most relevant parameter to describe uncertainty degree. Special processing was applied to suppress effect of optical path sensitivity. Resulting maps shows fluctuation space distribution. Their application in investigation of discharge structure is demonstrated on an example of thermal plasma jet.
Permanent Link: http://hdl.handle.net/11104/0203774