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Recurrence Plots and Cross Recurrence Plots

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Fluctuation and Noise Letters, 15(2), 1650011p. (2016) DOI:10.1142/S0219477516500115

RP and RQA Analysis for Floating Potential Fluctuations in a DC Magnetron Sputtering Plasma

G. K. Sabavath, I. Banerjee, S. K. Mahapatra

The nonlinear dynamics of a direct current magnetron sputtering plasma is visualized using recurrence plot (RP) technique. RP comprises the recurrence quantification analysis (RQA) which is an efficient method to observe critical regime transitions in dynamics. Further, RQA provides insight information about the system's behavior. We observed the floating potential fluctuations of the plasma as a function of discharge voltage by using Langmuir probe. The system exhibits quasi-periodic-chaotic-quasi-periodic-chaotic transitions. These transitions are quantified from determinism, Lmax, and entropy of RQA. Statistical investigations like kurtosis and skewness also studied for these transitions which are in well agreement with RQA results.