https://doi.org/10.1140/epjd/s10053-024-00808-8
Regular Article - Plasma Physics
Reduced ionization coefficients in low-current dc discharge in freons of a new generation
1
Institute of Physics, University of Belgrade, Pregrevica 118, 11080, Belgrade, Serbia
2
Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11001, Belgrade, Serbia
3
School of Engineering, Ulster University, BT37 0QB, Jordanstown, Co. Antrim, UK
Received:
7
October
2023
Accepted:
23
January
2024
Published online:
4
February
2024
In this paper we present results for reduced ionization coefficients (α/N, N—gas density) obtained from the breakdown voltage and emission profile measurements in low-pressure dc discharges in two freons: 1,1,1,2-tetrafluoroethane (R134a) with the chemical formula CH2F–CF3 and 2,3,3,3-tetrafluoropropene (HFO1234yf) with the chemical formula CH2=CFCF3. Our results for α/N are determined from the axial emission profiles in low-current Townsend discharge and lay in the intervals of reduced electric fields E/N (E—electric field, N—gas density), from 2.7 to 5.9 kTd for R134a and from 5 to 23 kTd for HFO1234yf. We also provide a comparison of our experimental results with those from the available literature.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
