Temperature and pressure effects on positive streamers in air

Huiskamp, T.; Pemen, Ajm Guus; Hoeben, Wflm Wilfred; Beckers, Fjcm Frank; Heesch, van Ejm Bert

doi:10.1088/0022-3727/46/16/165202

Cited by 25 publications

(32 citation statements)

References 27 publications

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“…Previously, we investigated the dependency of the matching and streamer propagation when the E/n value was changed by changing the pressure and the temperature. We showed that a higher E/n value (low pressure or high temperature) increases the energy consumption of the plasma and therefore leads to a better matching [32].…”

Section: Previous Matching Studiesmentioning

confidence: 89%

Matching a (sub)nanosecond pulse source to a corona plasma reactor

Huiskamp

Beckers

Hoeben³

et al. 2016

Plasma Sources Sci. Technol.

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Section: Previous Matching Studiesmentioning

confidence: 89%

Matching a (sub)nanosecond pulse source to a corona plasma reactor

Huiskamp

Beckers

Hoeben³

et al. 2016

Plasma Sources Sci. Technol.

Self Cite

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“…Such a wave phenomenon results from the space charge left by electron avalanches [1,2]. Streamers are present in a large number of plasmas, whether operated in the laboratory [3][4][5][6][7][8], in industrial applications [9] or occurring in lightning and transient luminous events in upper atmosphere [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Sub-nanosecond delays of light emitted by streamer in atmospheric pressure air: Analysis of N2(C3Πu) and N2+(B2Σu+) emissions and fundamental streamer structure

Hoder

Bonaventura

Bourdon

et al. 2015

Journal of Applied Physics

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Both experimental and theoretical analysis of an ultra-short phenomena occurring during the positive streamer propagation in atmospheric pressure air is presented. With tens-of-picoseconds and tens-of-microns precision, it is shown that when the streamer head passes a spatial coordinate, emission maxima from N2 and N + 2 radiative states follow with different delays. These different delays are caused by differences in the dynamics of populating the radiative states, due to different excitation and quenching rates. Associating the position of the streamer head with the maximum value of the selfenhanced electric field, a delay of 160 ps was experimentally found for the peak emission of the first negative system of N + 2 . For the first time, a delay dilatation was observed experimentally on early-stage streamers and clarified theoretically. Thus, in the case of second positive system of N2 the delay can reach as much as 400 ps. In contrast to the highly-nonlinear behaviour of streamer events, it is shown theoretically that emission maxima delays linearly depend on the ratio of the streamer radius and its velocity. This is found to be one of the fundamental streamer features and its use in streamer head diagnostics is proposed. Moreover, radially-resolved spectra are synthetized for selected subsequent picosecond moments in order to visualize spectrometric fingerprints of radial structures of N2(C 3 Πu) and N + 2 (B 2 Σ + u ) populations created by streamer-head electrons.

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“…Therefore, with the development of a discharge in heated air or with significant heating of it at the discharge stage, the formation of cluster ions sharply slows down and their dissociation and the detachment of electrons from negative ions are accel- O erated. This effect for pulsed nanosecond discharges in air has been studied best for a streamer discharge in long gaps (see [120][121][122][123] and references therein). The effects in heated air for a streamer plasma and its decay have received both experimental and numerical confirmation based on the available kinetic models for positive and negative ions.…”

Section: Decay Of Non-equilibriummentioning

confidence: 99%

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Starikovskiy

Aleksandrov

2021

Plasma Phys. Rep.

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Abstract— The paper presents a review of modern works on gasdynamic flow control using a highly nonequilibrium pulsed plasma. The main attention is paid to the effects based on ultrafast (on the nanosecond time scale for atmospheric pressure) local gas heating, since, at present, the main successes in controlling high-speed flows by means of gas discharges are associated with this thermal mechanism. Attention is paid to the physical mechanisms responsible for the interaction of the discharge with gas flows. The first part of the review outlines the most popular approaches for pulsed energy deposition in plasma aerodynamics: nanosecond surface barrier discharges, pulsed spark discharges, and femto- and nanosecond optical discharges. The mechanisms of ultrafast heating of air at high electric fields realized in these discharges, as well as during the decay of the discharge plasma, are analyzed separately. The second part of the review gives numerous examples of plasma-assisted control of gasdynamic flows. It considers control of the configuration of shock waves in front of a supersonic object, control of its trajectory, control of quasi-stationary separated flows and layers, control of a laminar–turbulent transition, and control of static and dynamic separation of the boundary layer at high angles of attack, as well as issues of the operation of plasma actuators in different weather conditions and the use of plasma for the de-icing of a flying object.

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Temperature and pressure effects on positive streamers in air

Cited by 25 publications

References 27 publications

Matching a (sub)nanosecond pulse source to a corona plasma reactor

Matching a (sub)nanosecond pulse source to a corona plasma reactor

Sub-nanosecond delays of light emitted by streamer in atmospheric pressure air: Analysis of N2(C3Πu) and N2+(B2Σu+) emissions and fundamental streamer structure

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

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