This work reports average electron temperature () and electron density () of an atmospheric argon rotating gliding arc (), operated in glow-type mode, under transitional and turbulent flows. Both and were calculated near the shortest () and longest () gap between the electrodes, by two different methods using two separate measurements: (1) optical emission spectroscopy () and (2) physical–electrical. calculated from (a) collisional radiative model () () and (b) BOLSIG+ [physical–electrical, reduced electric field as input], differed each other by 16%–26% at and 6% at . was maximum at ( eV) and minimum near (1.6–1.7 eV). Similarly, the was maximum near the (5–8 Td) and minimum near , reaching an asymptotic value (1 Td). By benchmarking from , the expected near was corrected to 3 Td. The calculated intensity agreed well with that of the measured for most of the emission lines indicating a well optimized model. The average near and from Stark broadening () was 4.8– , which is an order higher than the calculated through current density (physical–electrical). and were not affected by gas flow, attributed to the glow-type mode operation. To the best of authors’ knowledge, this work reports for the first time (a) an optimized for s (fine-structure resolved), (b) the poly-diagnostic approach to estimate plasma parameters, and (c) the validation of calculated using physical–electrical measurements.
Estimation of electron density and temperature in an argon rotating gliding arc using optical and electrical measurements
Ananthanarasimhan J, Reetesh Kumar Gangwar, P. Leelesh, P. S. N. S. R. Srikar, Anand M. Shivapuji, Lakshminarayana Rao; Estimation of electron density and temperature in an argon rotating gliding arc using optical and electrical measurements. J. Appl. Phys. 14 June 2021; 129 (22): 223301. https://doi.org/10.1063/5.0044014
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