Sheath Oscillations During Fire Tube Formation In Expanding Rf Plasma

Bose, Subhojit; Chakraborty, Shamik; Upadhyaya, Ankur; Sharma, Shivam; Nath, A.; Paul, Manash Kumar

doi:10.1088/1742-6596/1172/1/012048

Cited by 1 publication

(3 citation statements)

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“…Ion saturation current oscillations during the hollow cathode discharge at V dc ˜ 370 V indicating the ionization instability mode [ 22,23 ] …”

Section: Resultsmentioning

confidence: 99%

“…Ion saturation current oscillations during the hollow cathode discharge at V dc ∼ 370 V indicating the ionization instability mode [22,23] F I G U R E 16 IMFs obtained using EMD for the experimental time series at V dc ∼ 400 V…”

Section: F I G U R E 15mentioning

confidence: 99%

“…The coarse mesh spacing of the cylindrical cathode is of the order of 4 mm and hence it is referred to as a semi-transparent mesh. [14,22,23] The coaxial mesh cathode source has a much larger effective area than that of the spherical ball anode which signifies the diverging electric field inside the plasma source. The electrodes connect through the current limiting resistors to a high-voltage DC power supply biased in a continuous (CW) mode of discharge, as shown in Figure 1.…”

Section: Experimental Setup and Diagnosticsmentioning

confidence: 99%

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Study of nonlinear characteristics in hollow cathode discharge in unmagnetized plasmas

Paul

Debnath

Kasturiya

et al. 2023

Contributions to Plasma Physics

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Parametric study and nonlinear dynamical analysis of the discharge parameter variations are presented here for a hollow cathode source in the glow discharge regime and later in the radio frequency (RF) discharge regime. A plasma source consisting of a semi‐transparent hollow cathode leads to the generation of nonthermal energetic charged particles and the formation of multiple potential regimes in the plasma column during both the glow discharge as well as the RF discharge regimes. The hollow cathode discharge obtained using this single plasma source exhibits significant mixed‐mode oscillations (MMOs) during the glow discharge regime. Various regular and irregular sequences of MMOs evolved during the progressive change of discharge voltage in the glow discharge regime. During the RF power application across the hollow cathode source, the charged particles oscillate and appear in bursts in the time series. The present study investigates energy distribution among the coherent modes of discharge through the application of the Empirical Mode Decomposition technique. Multiple coherent modes are identified during both discharge regimes that carry most of the discharge energy.

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“…Ion saturation current oscillations during the hollow cathode discharge at V dc ˜ 370 V indicating the ionization instability mode [ 22,23 ] …”

Section: Resultsmentioning

confidence: 99%

Section: F I G U R E 15mentioning

confidence: 99%