Analyses of electron runaway in front of the negative streamer channel
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017ja023917
Abstract: X-and γ-ray emissions, observed in correlation with negative leaders of lightning and long sparks of high-voltage laboratory experiments, are conventionally connected with the bremsstrahlung of high-energy runaway electrons (REs). Here we extend a focusing mechanism,… read more here.
Keywords: ionization wave; channel; electron runaway; streamer ... See more keywords
Numerical Simulation of Streamer Physics in Nanosecond Pulsed Surface Discharges
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Aeronautical and Space Sciences"
DOI: 10.1007/s42405-021-00349-z
Abstract: Two-dimensional numerical simulations of a nanosecond pulsed single dielectric barrier discharge (SDBD) are performed in air. Streamers produced in nanosecond SDBDs have filamentary properties and generate a strong electric field and high-density gradient of charged… read more here.
Keywords: physics; non equilibrium; streamer; electric field ... See more keywords
Fluid modeling of radical species generation mechanism in dense methane-air mixture streamer discharge
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5016855
Abstract: Atmospheric dielectric barrier discharge (DBD) was found to be promising in the context of plasma chemistry, plasma medicine, and plasma-assisted combustion. In this paper, we present a detailed fluid modeling study of abundant radical species… read more here.
Keywords: fluid modeling; dense methane; discharge; radical species ... See more keywords
Modeling of streamer dynamics in helium plasma jets driven by modulated voltage pulses
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Plasmas"
DOI: 10.1063/1.5115779
Abstract: The results of simulation of guided streamers driven by modulated voltage pulses are presented. It is shown that, in qualitative accordance with recently obtained experimental data, modulation of the applied voltage can lead to oscillations… read more here.
Keywords: voltage pulses; plasma; modulated voltage; streamer ... See more keywords
Streamer properties and associated x-rays in perturbed air
Sign Up to like & getrecommendations! Published in 2018 at "Plasma Sources Science and Technology"
DOI: 10.1088/1361-6595/aaa5d8
Abstract: Streamers are ionization waves in electric discharges. One of the key ingredients of streamer propagation is an ambient gas that serves as a source of free electrons. Here, we explore the dependence of streamer dynamics… read more here.
Keywords: streamer properties; air; streamer; perturbed air ... See more keywords
The effect of the stochasticity of photoionization on 3D streamer simulations
Sign Up to like & getrecommendations! Published in 2019 at "Plasma Sources Science and Technology"
DOI: 10.1088/1361-6595/ab1331
Abstract: Positive streamer discharges require a source of free electrons ahead of them for their growth. In air, these electrons are typically provided by photoionization. Here we investigate how stochastic fluctuations due to the discreteness of… read more here.
Keywords: photoionization; positive streamers; amount photoionization; stochasticity photoionization ... See more keywords
Streamer self-focusing in an external longitudinal magnetic field.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review. E"
DOI: 10.1103/physreve.103.063201
Abstract: The numerical simulation of the development of a streamer discharge in a gap with an external longitudinal magnetic field was used to demonstrate the self-focusing of such discharges. Self-focusing is caused by a sharp deceleration… read more here.
Keywords: external longitudinal; field; streamer; self focusing ... See more keywords
Streamer and surface charge dynamics in non-uniform air gaps with a dielectric barrier
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Dielectrics and Electrical Insulation"
DOI: 10.1109/tdei.2019.007929
Abstract: Streamer behaviour near dielectric surfaces is an important characteristic of air-solid electrical insulation systems. Accurate predictions are important for dielectric design, but dynamic aspects such as surface charging during streamer propagation are not well understood.… read more here.
Keywords: streamer; surface charge; air; non uniform ... See more keywords
Fractal Analysis of Positive Streamer Patterns in Transformer Oil-Based TiO2 Nanofluid
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Plasma Science"
DOI: 10.1109/tps.2017.2705167
Abstract: In this paper, prebreakdown streamers in transformer oil and transformer oil-based TiO2 nanofluid were observed by the schlieren method under positive lightning impulse voltage. Streamers in the nanofluid have numerous branches with much shorter length,… read more here.
Keywords: streamer patterns; oil based; based tio2; transformer oil ... See more keywords
A Study on the Primary Mode of Pulsed Positive Streamer Discharge in Water
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Plasma Science"
DOI: 10.1109/tps.2019.2895698
Abstract: The primary mode of the pulsed positive streamer discharge in water has been studied by the shadowgraph imaging techniques utilizing an ultrahigh speed frame camera system. The propagation speed and the flare angle of the… read more here.
Keywords: water; voltage; streamer; primary mode ... See more keywords
Modeling Compact Intracloud Discharge (CID) as a Streamer Burst
Sign Up to like & getrecommendations! Published in 2020 at "Atmosphere"
DOI: 10.3390/atmos11050549
Abstract: Narrow Bipolar Pulses are generated by bursts of electrical activity in the cloud and these are referred to as Compact Intracloud Discharges (CID) or Narrow Bipolar Events in the current literature. These discharges usually occur… read more here.
Keywords: cid; field; streamer burst; streamer ... See more keywords