Charged-sheath model of cathode-directed streamer propagation

Geary, John M.; Penney, G. W.

doi:10.1103/physreva.17.1483

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…On the other hand, studies on the formation of plasmas, such as streamer discharge, have been performed for several decades (Dawson and Winn, 1965;Geary and Penney, 1978;Sigmond, 1984;Williams, 1985,1987;Kunhardt and Tzeng, 1988;Wang and Kunhardt, 1990;Eliasson and Kogelschatz, 1991a). These studies promoted the industrial use of pulsed plasma.…”

Section: Aiche Journal February 2001mentioning

confidence: 98%

Methane conversion using a high‐frequency pulsed plasma: Discharge features

2001

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Section: Aiche Journal February 2001mentioning

confidence: 98%

Methane conversion using a high‐frequency pulsed plasma: Discharge features

2001

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The scavenging of particles by electrified drops: Radar echo intensification following lightning

Barker¹,

Bicknell²,

Griffiths³

et al. 1983

Quart J Royal Meteoro Soc

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SUMMARYA series of laboratory experiments were performed in an effort to improve our understanding of the physics of the echo-intensification phenomenon, in which the radar reflectivity of a region of a thundercloud increases rapidly immediately following the occurrence of lightning within it. Measurements were made of the charges, q, deposited on falling water drops when they engage in direct interactions with positive corona streamers in a uniform electric field, E, just above the limit for propagation, E,. As the drop radius increased from 12 to 950pm, q increased from about to about 10-'°C; and q increased as E was raised above E,. These measurements yielded an estimate of 30pm and lo8, respectively, for the radius of, and the number of elementary charges contained in, the tip of a propagating streamer at a pressure of one atmosphere.The collection efficiencies of drops in the radius range 40 to 120pm carrying charges appropriate to the direct interaction process, for uncharged droplets of radius around 12pm, were found to be about four times the non-electrical values. It was concluded that this enhancement in collection resulted largely from dipole rather than coulomb forces. A simple analysis indicates that reported echo-intensification observations cannot be explained in terms of these enhanced collection efficiencies, but could possibly be a consequence of the greatly enhanced velocities (and hence growth rates) of drops of radius -100pm highly charged by direct interaction with corona streamers in the intense electric fields of a thundercloud.

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Model of a streamer in a long discharge gap

Meleshko

Shveigert

1989

J Appl Mech Tech Phys

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Charged-sheath model of cathode-directed streamer propagation

Cited by 6 publications

References 14 publications

Methane conversion using a high‐frequency pulsed plasma: Discharge features

Methane conversion using a high‐frequency pulsed plasma: Discharge features

The scavenging of particles by electrified drops: Radar echo intensification following lightning

Model of a streamer in a long discharge gap

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