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.
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14 June 2021
Research Article|
June 09 2021
Estimation of electron density and temperature in an argon rotating gliding arc using optical and electrical measurements
Ananthanarasimhan J
;
Ananthanarasimhan J
1
Centre for Sustainable Technologies, Indian Institute of Science
, Bengaluru 560012, India
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Reetesh Kumar Gangwar
;
Reetesh Kumar Gangwar
a)
2
Department of Physics and CAMOST, Indian Institute of Technology Tirupati
, Tirupati 517506, India
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P. Leelesh
;
P. Leelesh
1
Centre for Sustainable Technologies, Indian Institute of Science
, Bengaluru 560012, India
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P. S. N. S. R. Srikar
;
P. S. N. S. R. Srikar
2
Department of Physics and CAMOST, Indian Institute of Technology Tirupati
, Tirupati 517506, India
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Anand M. Shivapuji
;
Anand M. Shivapuji
1
Centre for Sustainable Technologies, Indian Institute of Science
, Bengaluru 560012, India
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Lakshminarayana Rao
Lakshminarayana Rao
b)
1
Centre for Sustainable Technologies, Indian Institute of Science
, Bengaluru 560012, India
b)Author to whom correspondence should be addressed: narayana@iisc.ac.in
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a)
E-mail: reetesh@iittp.ac.in
b)Author to whom correspondence should be addressed: narayana@iisc.ac.in
J. Appl. Phys. 129, 223301 (2021)
Article history
Received:
January 13 2021
Accepted:
May 20 2021
Citation
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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