Observation of electric field enhancement in a water streamer using Kerr effect

Sarkisov, G. S.; Zameroski, Nathan D.; Woodworth, J. R.

doi:10.1063/1.2189215

Cited by 19 publications

(13 citation statements)

References 5 publications

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“…In spite of their very different conditions, discharges in liquids may share some properties with high pressure gases. For example, discharges in liquids are often corona-like, where the plasma is filamentary with many branches which at least visibly is similar to streamers in high pressure gases [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of inhomogeneities on streamer propagation: II. Streamer dynamics in high pressure humid air with bubbles

Babaeva

Kushner

2009

Plasma Sources Sci. Technol.

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The branching of electric discharge streamers in atmospheric pressure air, dense gases and liquids is a common occurrence whose origins are likely found with many causes, both deterministic and stochastic. One mechanism for streamer branching may be inhomogeneities in the path of a streamer which either divert the streamer (typically a region of lower ionization) or produce a new branch (a region of higher ionization). The propagation and branching of streamers in liquids is likely aided by low density inhomogeneities, bubbles; however, modeling of streamers in liquids is made difficult by the lack of transport coefficients. As a first step towards understanding the propagation and branching of streamers in liquids, we investigated the consequences of random inhomogeneities in the form of low pressure bubbles on the propagation of streamers in high pressure humid air. By virtue of their lower density, bubbles have larger E/N (electric field/gas number density) than the ambient gas with larger rates of ionization. The intersection of a streamer with a bubble will focus the plasma into the bubble by virtue of that higher rate of ionization but the details of the interaction depend on the relative sizes of the bubble and streamer. When a streamer intersects a field of bubbles, the large E/N in the bubble avalanches seed electrons produced by photoionization from the streamer. Each bubble then launches both a negative and positive going streamer that may link with those from adjacent bubbles or the original streamer. The total process then appears as streamer branching.

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Section: Introductionmentioning

confidence: 99%

Effect of inhomogeneities on streamer propagation: II. Streamer dynamics in high pressure humid air with bubbles

Babaeva

Kushner

2009

Plasma Sources Sci. Technol.

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“…Additionally, the diagnostics available for direct measurements of plasma parameters such as charge densities and electric-field strengths are experimentally complex. Some examples of experimental research on breakdown for specific plasma applications are cross-correlation spectroscopy of dielectric barrier discharges [6], optical and electrostatic investigations of igniting fluorescent tubes [7], and investigations of electric fields in streamers, using the Kerr effect [8]. While these are notable studies, plasma properties were obtained indirectly from measurements of emission [6,7] or via a model interpretation [8].…”

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confidence: 99%

Measurements of Electric-Field Strengths in Ionization Fronts during Breakdown

2007

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Using laser-induced fluorescence-dip Stark spectroscopy, we performed time-resolved, direct measurements of electric-field strengths during the breakdown phase of a low-pressure, pulsed discharge in xenon. With this experimental technique we could for the first time quantitatively measure the time evolution of the driving force of the plasma breakdown process: the electric field. Moving ionization fronts were measured with submicrosecond resolution. These ionization fronts were sustained by a spatially narrow, rapidly moving region of strong electric field.

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“…For the measurement of the fields inside the glass target it is enough to use only 2-channel polarimetry (because Verdet and Kerr constants are available for the BK7 glass). The magnetic field and electric field measurements are similar to those described for water discharges in [8] (Faraday effect) and in [9] (Kerr effect). The measurement technique was described in a detail in [10].…”

Section: Resultsmentioning

confidence: 71%

Laser-driven relativistic electron beam interaction with solid dielectric

Sarkisov

Иванов

Leblanc

et al. 2012

AIP Conference Proceedings

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Articles you may be interested in Laser-driven relativistic electron beam interaction with solid dielectric AIP Conf. Abstract. Electron density bubbles generated in plasma of density n e ~ 10 19 /cm 3 are shown to reshape copropagating probe pulses into optical "bullets." The bullets, reconstructed by frequency-domain interferometric techniques, are used to visualize bubble formation independently of relativistic electron generation.

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Observation of electric field enhancement in a water streamer using Kerr effect

Cited by 19 publications

References 5 publications

Effect of inhomogeneities on streamer propagation: II. Streamer dynamics in high pressure humid air with bubbles

Effect of inhomogeneities on streamer propagation: II. Streamer dynamics in high pressure humid air with bubbles

Measurements of Electric-Field Strengths in Ionization Fronts during Breakdown

Laser-driven relativistic electron beam interaction with solid dielectric

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