Abstract
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.
| Original language | English |
|---|---|
| Article number | 125602 |
| Journal | Physica Scripta |
| Volume | 90 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 06-11-2015 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Mathematical Physics
- Condensed Matter Physics
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Multi-scale dynamics in externally excited glow discharge plasma. / Deka, Utpal; Rao, Ashok; Nurujjaman, Md.
In: Physica Scripta, Vol. 90, No. 12, 125602, 06.11.2015.Research output: Contribution to journal › Article
TY - JOUR
T1 - Multi-scale dynamics in externally excited glow discharge plasma
AU - Deka, Utpal
AU - Rao, Ashok
AU - Nurujjaman, Md
PY - 2015/11/6
Y1 - 2015/11/6
N2 - 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.
AB - 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.
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U2 - 10.1088/0031-8949/90/12/125602
DO - 10.1088/0031-8949/90/12/125602
M3 - Article
VL - 90
JO - Physica Scripta
JF - Physica Scripta
SN - 0031-8949
IS - 12
M1 - 125602
ER -