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Enhancement of discharge properties of atmospheric pressure plasma systems through trace radio-frequency oscillation control

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (7)

In this work, we report a novel approach that enhances the plasma properties of non-equilibrium plasma under atmospheric pressure using dual-frequency......

Energy efficiency of voltage waveform tailoring for the generation of excited species in RF plasma jets operated in He/N-2 mixtures

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (9)

Based on tunable diode laser absorption spectroscopy (TDLAS) measurements of the spatially averaged and peak helium metastable atom densities in a cap......

How to balance computational cost and accuracy of the model for negative hydrogen ion sources? A level-lumping strategy

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (7)

In this work, a level-lumping strategy is proposed, which could accurately reproduce the plasma characteristics in negative hydrogen ion sources with ......

Collisional electron momentum loss in low temperature plasmas: on the validity of the classical approximation

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (6)

The electron momentum loss obtained from kinetic simulations, as well as the classical approximation based on the electron-neutral collision frequency......

Spatiotemporal variations of the electrical potential on surface dielectric barrier discharges

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (4)

In this study, the temporal variation of an electric potential distribution was measured in a surface dielectric barrier discharge experiment using th......

Evolution of the uniformity in the repetitive unipolar nanosecond-pulse dielectric barrier discharge

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (7)

The time evolution of dielectric barrier discharge driven by nanosecond pulse high-voltage power is investigated by high-speed video analysis, electri......

Numerical investigations of nanosecond surface streamers at elevated pressure

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (7)

Single-pulse nanosecond surface dielectric barrier discharges operated in synthetic air and pure nitrogen at elevated pressure (6 bar) have been numer......

A low-current LaB6 open-end knife-edge emitter hollow cathode for low-power Hall thrusters

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (8)

Heated thermionic cathodes based on LaB6 emitters are known to consume a relatively large amount of power during the heating part of the ignition phas......

Comparing simulations and experiments of positive streamers in air: steps toward model validation

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (9)

We compare simulations and experiments of single positive streamer discharges in air at 100 mbar, aiming toward model validation. Experimentally, stre......

2D particle-in-cell simulations of geometrically asymmetric low-pressure capacitive RF plasmas driven by tailored voltage waveforms

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (5)

The effects of the simultaneous presence of two different types of plasma asymmetry, viz, geometric and electrical, on low-pressure capacitively coupl......

Theoretical and numerical studies of breakdown phenomena triggered by microparticle in nitrogen gaps

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (4)

This paper studies microparticle-triggered breakdown phenomena in mm-scale nitrogen gaps based on theoretical analysis and numerical simulation. Secon......

Single-shot 3D imaging of hydroxyl radicals in the vicinity of a gliding arc discharge

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (4)

Plasma-related studies in gas phase are challenging to carry out due to plasma's transient and unpredictable behavior, excessive luminosity emission, ......

Comprehensive understanding of the ignition process of a pulsed capacitively coupled radio frequency discharge: the effect of power-off duration

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (7)

The effect of the pulse-off duration on the time evolution of the plasma and electrical parameters during the ignition phase in a pulsed capacitively ......

Nonlinear harmonic excitations in collisional, asymmetrically-driven capacitive discharges

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (4)

The standing wave effect, which may lead to center-high density profiles in high frequency capacitive discharges, can be enhanced by nonlinearly excit......

Numerical and theoretical modeling of the sheath upstream of ion optics: sheath structure transition and its effect on the beam divergence

期刊: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021; 30 (7)

The grasp of the sheath characteristics is fundamental to evaluate the extraction capabilities of ion optics and accommodate the wide application of i......

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