We are feeding argon in a dielectric barrier discharge (DBD) reactor subjected to nanopulses with the parameters indicated in the attached figure. Is it possible to conclusively determine if there is plasma generation in the reactor by just looking at the V and I data produced by the oscilloscope? If not, what else would be required to confirm this?
I think you should also provide the details, like between what ends the measurement is taken, also what is the shape of the input pulse,e etc?
- Displacement vs. Conduction Current:
In a DBD system, you'll typically see a capacitive displacement current (smooth sinusoidal or exponential waveform), and if plasma is ignited, sharp current spikes (fast transients) will superimpose on it.
These sharp spikes indicate microdischarges or streamers, which are strong indicators of plasma formation.
- Energy Dissipation:
By plotting a Lissajous figure (Q-V or I-V curve over a cycle), a non-zero area in the loop indicates energy dissipation, typically associated with plasma activity.
Thanks Bharat Singh Rawat and Ghazaleh Tahmasebi for your responses.
Ghazaleh: Based on the attached figure, would you say you can see those sharp spikes due to fast transients that you are referring to? How about the current intensity?
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