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Title: Experimental investigation of quasiperiodic-chaotic-quasiperiodic-chaotic transition in a direct current magnetron sputtering plasma

Floating potential fluctuations from a direct current magnetron sputtering plasma have been analysed using time series analysis techniques like phase space plots, power spectra, frequency bifurcation plot, etc. The system exhibits quasiperiodic-chaotic-quasiperiodic-chaotic transitions as the discharge voltage was increased. The transitions of the fluctuations, quantified using the largest Lyapunov exponent, have been corroborated by Hurst exponent and the Shannon entropy. The Shannon entropy is high for quasiperiodic and low for chaotic oscillations.
Authors:
; ;  [1] ; ;  [2]
  1. Plasma Laboratory, Department of Physics, Birla Institute of Technology-Mesra, Ranchi 835215 (India)
  2. Plasma Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064 (India)
Publication Date:
OSTI Identifier:
22490041
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BIFURCATION; CHAOS THEORY; DIRECT CURRENT; ELECTRIC POTENTIAL; ENTROPY; EXPERIMENT RESULTS; LYAPUNOV METHOD; MAGNETRONS; OSCILLATIONS; PHASE SPACE; PLASMA; POTENTIALS; SPECTRA; SPUTTERING; TIME-SERIES ANALYSIS