Formation of a small ‘bead lightning’ in a half-microsecond discharge in air

Белоплотов, Д. В.; Тарасенко, В. Ф.

doi:10.1016/j.physleta.2018.11.004

Cited by 2 publications

(4 citation statements)

References 28 publications

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“…The research covered in the review was conducted on different generators and at different voltage parameters both in single pulse mode (for the most part) and in repetitive mode at up to 3 kHz. The generators used in experiments at a voltage amplitude of hundred kilovolts were SLEP-150 [59], SLEP-150M [60], RADAN-220 [61], RADAN-303 [62], SM-3NS [63], and VPG-30-200 [64], and those at a voltage amplitude of tens of kilovolts were GIN-55-01, GIN-100-1 and GIN-50-1 [65], NPG-15/2000N and NPG-18/2000N [66], and GIN-35NP [67]. Their parameters are tabulated in table 1.…”

Section: Experimental Setups and Measuring Techniquesmentioning

confidence: 99%

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Runaway electrons in diffuse gas discharges

Тарасенко

2020

Plasma Sources Sci. Technol.

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The paper provides a review of research data showing the role of runaway electrons in gas breakdowns and diffuse discharges in an inhomogeneous electric field at a pressure of 0.01-1.2 MPa. From the data presented the reader can grasp the idea of how such discharges develop at negative and at positive voltage polarity, what setups and conditions are best suited to detect runaway electron beams, and what factors influence their amplitude, duration, and energy. Also analyzed are the streamer mechanisms of diffuse discharges and the generation of runaway electrons in high-pressure gases in an inhomogeneous electric field. The review is supplemented with respective diagrams and with images captured at high resolution to trace the plasma dynamics of nanosecond gas discharges from early prebreakdown stages till their final diffuse appearance.

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Section: Experimental Setups and Measuring Techniquesmentioning

confidence: 99%

“…The plasma glow dynamics was captured using a fourchannel ICCD camera with a minimum gate width of 3 ns [67,73,74]. The discharge gap at the entrance slit was imaged using a quartz lens of diameter 5 cm with a focal length of 26.7 cm.…”

Section: Experimental Setups and Measuring Techniquesmentioning

confidence: 99%

Runaway electrons in diffuse gas discharges

Тарасенко

2020

Plasma Sources Sci. Technol.

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“…As a result, a diffuse discharge is formed, which gradually constricts and transforms into a spark (figure 5). It was found that the duration of the diffuse stage of the discharge can be up to ≈100 ns (see also [27]).…”

Section: Resultsmentioning

confidence: 97%

“…The radiation intensity of plasma along the spark was not uniform. The spark formation at the air pressure of 100 kPa has been studied in [27].…”

Section: Resultsmentioning

confidence: 99%

E-beam generation in discharges initiated by voltage pulses with a rise time of 200 ns at an air pressure of 12.5–100 kPa

Тарасенко

Белоплотов

Ломаев

et al. 2019

Plasma Sci. Technol.

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The effect of air pressure (12.5, 25, 50, and 100 kPa) on the generation of runaway electron beams in a non-uniform electric field when applying voltage pulses (≈35 kV) with a rise time of ≈200 ns has been studied. The results show that the discharge has various stages: streamer, diffuse, and spark. Initially, a wide streamer develops in the gap and a diffuse discharge is formed. A spark is formed ≈100 ns after the breakdown. The current pulse of a supershort avalanche electron beam (SAEB) was measured with a collector at various pressures of air. Experiments show that there are two modes of generation of runaway electrons. At an air pressure of 25-100 kPa, a single SAEB current pulse with a full width at half-maximum (FWHM) of 120-140 ps is observed. At the air pressure of 12.5 kPa, two current pulses of the electron beam are observed. FWHM of the first and second current pulses are ≈140 ps and ≈300 ps, respectively. The current pulse amplitude of the second electron beam is higher than that of the first one, but the electron energy is less.

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Formation of a small ‘bead lightning’ in a half-microsecond discharge in air

Cited by 2 publications

References 28 publications

Runaway electrons in diffuse gas discharges

Runaway electrons in diffuse gas discharges

E-beam generation in discharges initiated by voltage pulses with a rise time of 200 ns at an air pressure of 12.5–100 kPa

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