Influence of repetition frequency on streamer-to-spark breakdown mechanism in transient spark discharge

Janda, M.; Martišovitš, V.; Buček, Andrej; Hensel, Karol; Molnár, Matej; Machala, Zdenko

doi:10.1088/1361-6463/aa8940

Cited by 13 publications

(19 citation statements)

References 47 publications

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“…This initial current pulse was attributed to a streamer [1]. The optical visualization of the TS evolution revealed its more complex behavior during the discharge initiation phase [31,32]. In our previous work [32], streak camera-like images were obtained using spatiotemporal reconstruction of the discharge emission detected by a photomultiplier tube with a light collection system placed on a micrometric translation stage (figure 1).…”

Section: Transient Sparkmentioning

confidence: 99%

“…The chemical kinetic modeling could also help us to improve our understanding of the TS discharge evolution, the transition from streamer to gas breakdown and spark formation. The individual phases of the TS discharge were identified by optical diagnostic techniques [31,32]. The results enabled the visualization of different phases of the TS development, including the primary streamer, the secondary streamer, and the transition to the spark.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to the previous version of our model presented in [40], the presented model includes more species, more reactions and, besides the primary streamer, we also included the secondary streamer phase. The validity of the model was tested by comparing the calculated electron and N 2 (C) densities with experimental data [1,2,32,41].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetic plasma chemistry model of pulsed transient spark discharge in air coupled with nanosecond time-resolved imaging and spectroscopy

Janda¹,

Hensel²,

Machala³

2018

J. Phys. D: Appl. Phys.

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Based on experimental results, transient spark (TS) discharge in atmospheric air is an efficient source of NOx for biomedical applications with a negligible O3 production. The TS discharge is characterized by short (~10 ns) high current (~A) pulses initiated by streamer. The time-resolved optical imaging and spectroscopy of the TS discharge revealed that the primary streamer (ionization wave) is followed by the secondary streamer, enabling us to reconstruct the temporal evolution of the reduced electric field strength E/N(t). This was then used for a chemical kinetic model of the primary and the secondary streamer phases of the TS discharge. In this chemical kinetic modeling, we focus on the generation of selected reactive oxygen and nitrogen species (RONS) with antibacterial and other biological effects: O, N, NO, NO2, and O3. We proved that the secondary streamer plays a more important role in the induced chemistry than the primary streamer. In the simulation with the secondary streamer, the densities of RONS were increased by an order of magnitude when compared to the simulation without the secondary streamer, despite the same peak electron densities. The dominant intermediate product of the secondary streamer chemistry is atomic oxygen. Without the spark phase, this would lead to the generation of ozone as the dominant final product. However, in the spark pulse phase following the streamer(s), the chemistry is twisted towards dominant production of NOx.

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Section: Transient Sparkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinetic plasma chemistry model of pulsed transient spark discharge in air coupled with nanosecond time-resolved imaging and spectroscopy

Janda¹,

Hensel²,

Machala³

2018

J. Phys. D: Appl. Phys.

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“…The gas density decreases due to the heating effect of the streamer channel with increasing frequency and voltage, which accelerates the ionization process and leads to the spark breakdown. 28) The amount of O 3 production increases with increasing the output voltage and pulse repetition rate. The energy efficiency increases with increasing pulse repetition rate and reaches the maximum value of 70 g kWh −1 .…”

Section: Evaluation Of Gas Treatment Characteristics Of Streamer Disc...mentioning

confidence: 99%

Development of palm-sized gas treatment device utilizing streamer discharges generated by compact resonant high-voltage pulse generator

Takahashi

Suzuki

Saito

et al. 2023

Jpn. J. Appl. Phys.

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A compact and lightweight gas treatment system integrated with a high-voltage pulse generator driven by SiC-MOSFET and wires-to-wires electrode. The maximum amplitude and pulse width of the output voltage of the pulse generator without load are 10 kV and 31 ns, respectively, and the maximum energy transfer efficiency reaches 88% with a load resistance of 0.44 k. This pulse generator was applied to a multilayered wires-to-wires electrodes and the streamer discharges propagate between the electrodes was observed. Streamers initially propagates horizontally according to the Laplacian electric field near the high-voltage electrode. When they approach the ground electrodes, they curve and propagate toward the ground electrode due to the high electric field between the streamer head and the ground electrode. The velocity of the streamer propagation is with a velocity of 0.4 to 0.71 × 106 m/s. Ozone production and ethylene removal characteristics are investigated in a sealed vessel.

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“…The spark discharge between bare electrodes is the most common discharge formed under atmospheric air, and it is promising for a wide range of applications. The high energy input per pulse and abundant reactive species [1] make the spark discharge of great interest in the field of CO 2 decomposition, methane conversion, and nitrogen fixation [2][3][4]. Moreover, the development of nanosecond pulse technology not only * Authors to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Fast breakdown process and characteristics diagnosis of nanosecond pin–pin discharge

Li,

Feng

et al. 2024

J. Phys. D: Appl. Phys.

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In this paper, the characteristics of nanosecond spark discharge with a pin-pin electrode configuration have been systematically studied. Both streak camera with high temporal resolution and ICCD camera are employed together to investigate the breakdown and evolution process of the discharge. And the formation of initial breakdown and mode transition from streamer to spark in the electrode gap are clearly observed in the time scale of several nanoseconds with the temporal resolution of 100 ps. In addition, the time-resolved spectra technology is also used to analyze the generation and quenching mechanisms of reactive species, the electron density and electron temperature. The results show that there is a 1.25 ns initial discharge breakdown and that a bright cathode spot exist before the transformation from streamer to spark channel. After a faster cathode filament and a slower anode filament propagate and merge at the electrode gap, the spark discharge phase begins. The generation processes of different reactive species depend on discharge phase to a great extent. The N2 * is first generated during the streamer phase while the O*, N*, and N+ are mainly generated under the spark phase in which the electron temperature calculated by Boltzmann plots is 2.74 eV, and the electron density determined from the stark broadening of O lines is on the order of 1016 cm-3.

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Influence of repetition frequency on streamer-to-spark breakdown mechanism in transient spark discharge

Cited by 13 publications

References 47 publications

Kinetic plasma chemistry model of pulsed transient spark discharge in air coupled with nanosecond time-resolved imaging and spectroscopy

Kinetic plasma chemistry model of pulsed transient spark discharge in air coupled with nanosecond time-resolved imaging and spectroscopy

Development of palm-sized gas treatment device utilizing streamer discharges generated by compact resonant high-voltage pulse generator

Fast breakdown process and characteristics diagnosis of nanosecond pin–pin discharge

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