Multi-scale dynamics in externally excited glow discharge plasma

Deka, Utpal and Rao, Ashok and Nurujjaman, M D (2015) Multi-scale dynamics in externally excited glow discharge plasma. Physica Scripta, 90.

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Time series analysis of fluctuations excited due to external perturbation in a dc glow discharge plasma system is presented. Analysis shows that the observed data is non-Gaussian in nature and has purely deterministic behavior. The oscillations are bi-periodic in nature without any occurrence of chaos with increasing discharge voltage. Two dominant frequencies 100 KHz and 200 KHz with background noise are observed. The Hurst coefficient is also evaluated for the data sets and is seen to be greater than 0.5 for all the cases. The observed bi-periodic oscillations have their origin due to some nonlinearities in the system. The observed frequencies are found to be due to ionization instability and ion acoustic instability

Item Type: Article
Uncontrolled Keywords: plasma discharge, nonlinear dynamics, instability
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 28 Dec 2015 14:23
Last Modified: 28 Dec 2015 14:23

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