The statistical data on microdischarges of the surface dielectric barrier discharge unit based on aluminum nitride barrier

Lazukin, A. V.; Chernyshev, Timofey; Krivoruchko, Dariya

doi:10.1063/1.5083182

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…The finding associated with long pulses formation is the imbalance of the total charge carried by pulses in positive and negative half-periods. The charge imbalance in such measurements was previously obtained in a similar electrode arrangement [25]. The part of the charge in negative HP can be carried by a continuous current component; thus a glow mode of the discharge can coexist with the pulses.…”

Section: Copper Electrodementioning

confidence: 68%

“…The study of statistics of current pulses in atmospheric pressure discharges is a fairly standard approach, which allows a deeper understanding of the processes of self-organization of MDs. In [22][23][24][25] statistics of MDs for a barrier discharge in volume, coplanar, and surface configurations are presented. It was demonstrated that the presence of remnant charges on the dielectric surface leads to an increase in the transferred charge in subsequent MD generations [26,27].…”

Section: Microdischarges In Surface Barrier Dischargementioning

confidence: 99%

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Microdischarges properties in sDBD: the role of the exposed electrode oxidation

Selivonin¹,

Moralev²

2020

Plasma Sources Sci. Technol.

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The properties of microdischarges (MDs) in a surface barrier discharge, operating on various electrode materials are studied by current measurements and submicrosecond photography. Based on these data, the dynamics and statistics of MDs at various phases of the applied voltage are analyzed. It is shown that differences in oxide layer structure on the electrode edge strongly affect the spatial organization of the discharge and the properties of the current pulses.

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Section: Copper Electrodementioning

confidence: 68%

Section: Microdischarges In Surface Barrier Dischargementioning

confidence: 99%

Microdischarges properties in sDBD: the role of the exposed electrode oxidation

Selivonin¹,

Moralev²

2020

Plasma Sources Sci. Technol.

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“…[31] Due to the great difference in mobility between electrons and positive ions, electrons drift toward and enter the needle anode in the needle-tube discharge, depositing positive ions in the discharge channel and on the inner surface of the tube. [32] With the proceeding of the needle-tube discharge, more and more positive ions are accumulated, which can enhance the electric field in the right region of the needle. As a result, the electric field grows with time, inducing a positive streamer when it reaches a threshold.…”

Section: Resultsmentioning

confidence: 99%

Transition from a filamentary mode to a diffuse one with varying distance from needle to stream of an argon plasma jet

Xu 许,

Gao 高,

Jia 贾

et al. 2024

Chinese Phys. B

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Plasma jet has extensive application potentials in various fields, which normally operates in a diffuse mode when helium is used as the working gas. However, when less expensive argon is used, the plasma jet often operates in a filamentary mode. Compared to the filamentary mode, the diffuse mode is more desirable for applications. Hence, many efforts have been exerted to accomplish the diffuse mode of the argon plasma jet. In this paper, a novel single-needle argon plasma jet is developed to obtain the diffuse mode. It is found that the plasma jet operates in the filamentary mode when the distance from the needle tip to the central line of the argon stream (d) is short. It transits to the diffuse mode with increasing d. For the diffuse mode, there is always one discharge pulse per voltage cycle, which initiates at the rising edge of the positive voltage. For comparison, the number of discharge pulse increases with an increase in the peak voltage for the filamentary mode. Fast photography reveals that the plasma plume in the filamentary mode results from a guided positive streamer, which propagates in the argon stream. However, the plume in the diffuse mode originates from a branched streamer, which propagates in the interfacial layer between the argon stream and the surrounding air. By optical emission spectroscopy, plasma parameters are investigated for the two discharge modes, which show a similar trend with increasing d. The diffuse mode has lower electron temperature, electron density, vibrational temperature, and gas temperature compared to the filamentary mode.

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“…Разряд существует в виде большого числа кратковременных микроразрядов, отличающихся для положительной и отрицательной полуволны. При питании разряда гармоническим напряжением микроразряды группируются по питающим полуволнам, создавая паузу в горении разряда [6]. Это обеспечивает импульсный режим воздействия без дополнительных ис-полнительных средств.…”

Section: Introductionunclassified

Предпосевная Обработка Семян Озимой Пшеницы Поверхностным Разрядом

Lazukin¹,

Gundareva²,

Moralev³

et al. 2020

Журнал Технической Физики

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The experimental results of the surface barrier discharge plasma products effect on soft winter wheat seeds in electrode configurations consisted of the parallel strips at a distance of 5 and 10 mm from each other are shown. In each electrode system, the seed treatment was carried out for 10, 60, 120 and 180 s at the sinusoidal voltages of 1.8, 2.1, 2.4 or 2.7 kV with the frequency of 4.4 kHz applied to the electrodes. The seeds were placed in one layer on the grounded plane at the distance of 10 mm from the dielectric barrier surface. The treatment effect was estimated by the morphological characteristics of 3-day seedlings. To control the airflow in the gap, the particle imaging visualization method was used. It is shown that treatment modes are divided into two principal groups. The first group represents the modes when the airflow reaches the plane on which the seeds are located, the second group represents the modes when the airflow does not reach this plane. In the first case (the distance between the strips is 10 mm, the voltage is 2.4−2.7 kV at all exposures), it is possible to achieve modes that stimulate germination. Seed germinating ability did not change and maintained high values at all considered modes.

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The statistical data on microdischarges of the surface dielectric barrier discharge unit based on aluminum nitride barrier

Cited by 6 publications

References 13 publications

Microdischarges properties in sDBD: the role of the exposed electrode oxidation

Microdischarges properties in sDBD: the role of the exposed electrode oxidation

Transition from a filamentary mode to a diffuse one with varying distance from needle to stream of an argon plasma jet

Предпосевная Обработка Семян Озимой Пшеницы Поверхностным Разрядом

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