New phenomenology of gas breakdown in DC and RF fields

Petrović, Zoran Lj.; Sivos, Jelena; Savić, Marija; Škoro, Nikola; Radenović, Marija Radmilović; Malović, Gordana; Gocić, S. R.; Marić, Dragana

doi:10.1088/1742-6596/514/1/012043

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…At the higher point, the electron swarms are overlapping considerably with the electrode when the breakdown is achieved, while at lower breakdown voltage they are near the center. The fundamental electron kinetics with the consideration of the external magnetic field at multi-valued breakdown voltages are similar and consistent with previous studies [24,36,37]. It should be noted that the breakdown does not happen in the leftward region from the turning point unless an electron field emission [38,39] or multipactor-induced breakdown [40,41] may occur.…”

supporting

confidence: 89%

Transition in radio frequency gas breakdown with a transverse magnetic field

Yang,

Wang,

Zheng

et al. 2023

Plasma Sources Sci. Technol.

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This paper presents the quantification of gas breakdown voltages in low-pressure argon capacitive radio frequency (rf) discharges in the presence of an external transverse magnetic field via fully kinetic particle-in-cell/Monte Carlo collision simulations. It is found that as the magnetic field increases, the left branch of the breakdown curve, a double-valued rf breakdown voltage regime, shifts toward a lower-pressure region. A split of the breakdown curve into lower and upper branches occurs when the external magnetic field rises to a critical value. The observed abrupt transition of rf breakdown behaviors can be understood based on the electron kinetics behaviors, with the consideration of the enhanced ionization and electron confinement induced by E × B drift motions. An improved analytical model is developed, which can estimate the critical magnetic field required for the occurrence of the transition.

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supporting

confidence: 89%

Transition in radio frequency gas breakdown with a transverse magnetic field

Yang,

Wang,

Zheng

et al. 2023

Plasma Sources Sci. Technol.

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“…After 2014, the rapid development of diagnostic techniques such as high-time-resolution spectroscopy has made it possible to observe the evolution of plasma, which has significantly improved the MRF breakdown research [42]. In 2015, Lisovsky et al [43] used a combination of experiments and Monte Carlo simulations to study the breakdown voltage curves of hydrogen under DC and RF conditions, and the results showed that SEE had a significant impact on the breakdown curves.…”

Section: Experimental Research Into Mrf Breakdownmentioning

confidence: 99%

Gas breakdown in radio-frequency field within MHz range: a review of the state of the art

Jiang¹,

Wu²,

Wang³

et al. 2022

Plasma Sci. Technol.

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Low-temperature plasmas (LTPs) driven by 1-100 MHz radio-frequency (MRF) is essential for many industrial applications, and their breakdown characteristics are different from direct current (DC) breakdown. This review seeks to understand the state of the art of electric breakdown in the MRF field and provide references for related basic and applied research. We have given a brief history of the research of MRF-driven breakdown, including the Paschen curves, the corresponding discharge modes and parameter spaces, and the evolution of the parameters during the breakdown process. It is shown that the focus has been transferred from the breakdown voltage and V-I characters to the evolution of plasma parameters during the breakdown, both in experiments and simulations. It is shown that many fundamental and applied problems still need to be investigated, especially with the new global model and incorporating the external circuit model.

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“…Most of such studies have been carried out for noble gases (e.g. for argon [24,25]) and we are not aware of any previous work using such an approach for the case of air.…”

Section: Introductionmentioning

confidence: 99%

Experimental and kinetic simulation studies of radio-frequency and direct-current breakdown in synthetic air

Korolov¹,

Derzsi²

2014

J. Phys. D: Appl. Phys.

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We report a combined experimental and modeling study of the breakdown of synthetic air under the in uence of static (dc) and time-varying electric elds, up to radio-frequencies (RF). The simulations of the breakdown events are based on a simpli ed model that makes the problem computationally tractable: only electrons are traced by Monte Carlo simulation. In the dc case the simulation is used for the determination of the effective secondary electron emission coef cient, based on the measured dc Paschen curve. In the RF case we observe a transition between the modes (i) where reproduction of the charges takes place in the gas volume (at electron oscillation amplitudes smaller than the gap size) and (ii) where surface processes-secondary electron emission and electron re ection-play an important role, as most of the oscillating electrons reach the electrode surfaces. The RF (f = 13.56 MHz) simulations, assuming a constant effective secondary electron yield, reproduce well the breakdown curve obtained in the experiment.

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New phenomenology of gas breakdown in DC and RF fields

Cited by 5 publications

References 32 publications

Transition in radio frequency gas breakdown with a transverse magnetic field

Transition in radio frequency gas breakdown with a transverse magnetic field

Gas breakdown in radio-frequency field within MHz range: a review of the state of the art

Experimental and kinetic simulation studies of radio-frequency and direct-current breakdown in synthetic air

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