DC discharge in low-pressure ethanol vapour

In this paper, we present data from experimental studies of the DC breakdown in ethanol vapour at low pressure as well as electrical and optical measurements of DC discharge parameters from low-current to high-current regimes. A Paschen curve and the corresponding distribution of emission intensitie...

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Bibliographic Details
Published in:Plasma sources science & technology 2019-05, Vol.28 (5), p.55011
Main Authors: Sivoš, J, Mari, D, Škoro, N, Malovi, G, Petrovi, Z Lj
Format: Article
Language:English
Subjects:
alcohol vapour
DC discharges
electrical gas breakdown
plasmas in liquids
volt-ampere characteristics
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Summary:In this paper, we present data from experimental studies of the DC breakdown in ethanol vapour at low pressure as well as electrical and optical measurements of DC discharge parameters from low-current to high-current regimes. A Paschen curve and the corresponding distribution of emission intensities at low-current were recorded in the range of pd (pressure x electrode gap) from 0.10 Torr cm to 3.00 Torr cm, covering the region of Paschen minimum. Recorded axial profiles of emitted light from low-current discharge reveal that heavy particles make up a significant part in ethanol vapour breakdown in a wide range of values of pd i.e. E/N, for values E/N > 3 kTd they become dominant. Also, we recorded volt-ampere characteristics at working conditions close to the minimum of the Paschen curve, together with spatial profiles of low-current discharge. In the region of transition from normal to abnormal glow, sudden changes of the regime of operation were observed.
ISSN:0963-0252
1361-6595
1361-6595
DOI:10.1088/1361-6595/ab0952