Plasma discharge process in a gun type plasma device

In this communication we have reported the Paschen curve of argon plasma in a pulsed system where electrodes are placed in such a way that they are not parallel plate type. Here, the pulsed plasma is generated by using a washer plasma gun. The whole experiment is carried out in the CPS device. The w...

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Bibliographic Details
Main Authors: Sethi, B. K., Samantaray, S., Paikaray, R., Heera, Pawan, Sahoo, G.
Format: Conference Proceeding
Language:English
Subjects:
Anodes
Argon plasma
Base pressure
Electric power supplies
Electrode materials
Electrodes
Glow discharges
Parallel plates
Plasma
Plasma guns
Plasma jets
Pulse duration
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Summary:In this communication we have reported the Paschen curve of argon plasma in a pulsed system where electrodes are placed in such a way that they are not parallel plate type. Here, the pulsed plasma is generated by using a washer plasma gun. The whole experiment is carried out in the CPS device. The working gas used is experimental grade argon. The Paschen çurve obtained from such a system is analysed by comparing it with the Paschen curve obtained, using a parallel plate type electrodes. Anode material both for washer plasma gun and parallel plate type DC glow discharge device is copper. It is observed that the nature of Paschen curve for parallel plate type DC glow discharge device obeys the Paschen law as expected. However, the Paschen curve is modified when washer plasma gun is introduced in the CPS device by removing parallel plate type DC glow discharge device from it. It is worth noting that washer plasma gun is energised by a pulsed power supply. The pulse width of the voltage pulse here is 140μs. The minima of the experimental curve shifts towards higher value of pd in later case. Again, in the right branch of the said experimental curve for washer plasma gun discharge shifts towards x-axis (p.d axis) from that of the expected curve. Here p is base pressure and d is electrode separation.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0224584