Electromagnetic emissions in the MHz and GHz frequency ranges driven by the streamer formation processes

Parkevich, E. V.; Khirianova, A. I.; Khirianov, T. F.; Baidin, I. S.; Шпаков, К. В.; Родионов, А. А.; Bolotov, Ya. K.; Ryabov, V. A.; Kurilenkov, Yu. K.; Samoylov, I. S.; Ambrozevich, S. A.; Огинов, А. В.

doi:10.1103/physreve.106.045210

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…The measurements of pulsed SHF radiations of high‐voltage discharges at nano‐ and picosecond time scales were performed in recent years using wideband oscilloscopes and special electromagnetic probes (Gushchin et al., 2021; Parkevich et al., 2022, 2023; Zudin et al., 2022). In this work, we present the first measurements of the subnanosecond UWB EMP, which is produced by a breakdown of a long air gap (more than 4 m long) using GIN‐6MV Marx generator developed at VNIC900 (Istra, Moscow Oblast, Russia) for physical simulation of the lightning and studies of its damage factors.…”

Section: Introductionmentioning

confidence: 99%

Subnanosecond Electromagnetic Pulse Generated by a Long Spark Discharge: Lightning Implication

Gushchin,

Zudin,

Vershinin

et al. 2024

Geophysical Research Letters

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The effects of generating pulsed radiation by a long spark discharge are important for the development of lightning models and applications related to lightning protection. In experiments with a Marx generator simulating a lightning discharge, we detected the radiation in the form of a single ultrawideband electromagnetic pulse (UWB EMP) about 200 ps in duration, and rising time about 100 ps. UWB EMP generation occurs during the breakdown of a “rod–rod” 4 m long gap. Pulses of almost unipolar shape are observed in more than half of all positive discharges. EMP emission occurs before the main stage, and corresponds to the start of the upward leader from a grounded electrode. In negative discharges, pulses are also observed, but less frequently and with a smaller amplitude. The UWB EMPs, given their large amplitude (more than 100 V/m at a distance of 90 m from the discharge), can be considered as possible new lightning damage factors.

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Section: Introductionmentioning

confidence: 99%

Subnanosecond Electromagnetic Pulse Generated by a Long Spark Discharge: Lightning Implication

Gushchin,

Zudin,

Vershinin

et al. 2024

Geophysical Research Letters

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Temporal correlation between hard x rays and radio emissions in the MHz and GHz frequency ranges generated by a laboratory high-voltage discharge

Parkevich,

Khirianova,

Khirianov

et al. 2023

Journal of Applied Physics

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We investigate the temporal correlation between very-high-frequency (VHF, at frequencies of the order of 10–100 MHz), ultrahigh-frequency (UHF, at frequencies within 1–6 GHz), and x-ray (with photon energies more than 10 keV) emissions, which accompany the development of a high-voltage discharge initiated in a long gap at voltages up to 1 MV. The x-ray and UHF emissions are found to emerge starting approximately from the prepulse current onset observed before the discharge gap breakdown and both gradually decay coming to this instant. The UHF emission spectrum is represented with frequencies up to 6 GHz, with the highest spectral power being achieved within 1–2 GHz. The radio emission power drops sharply at frequencies below 1 GHz and increases closer to 150 MHz with the highest spectral power of VHF radiation being reached within 60–90 MHz. The VHF emission can appear before the discharge current and UHF emission onsets in the form of 100-ns-long prepulses, and its intensity significantly increases as the UHF emission starts. The analysis of the temporal correlation between x rays, VHF, and UHF radiations, discharge current, and voltage waveforms indicates that the generation mechanisms of the discharge electromagnetic radiations are difficult to be interpreted in terms of the developing or colliding streamer concepts.

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Natural sources of intense ultra-high-frequency radiation in high-voltage atmospheric discharges

Parkevich,

Khirianova,

Khirianov

et al. 2023

Phys. Rev. E

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Electromagnetic emissions in the MHz and GHz frequency ranges driven by the streamer formation processes

Cited by 4 publications

References 28 publications

Subnanosecond Electromagnetic Pulse Generated by a Long Spark Discharge: Lightning Implication

Subnanosecond Electromagnetic Pulse Generated by a Long Spark Discharge: Lightning Implication

Temporal correlation between hard x rays and radio emissions in the MHz and GHz frequency ranges generated by a laboratory high-voltage discharge

Natural sources of intense ultra-high-frequency radiation in high-voltage atmospheric discharges

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