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Plasma channel — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Plasma_channel
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T19:52:02.280Z
SHA-256 of the archived text: 48f4f55af56cc20c268592bfd1b8bf608f49e8b6e37f0b33941a84cfe347dabb
Stable URL of this page: https://metraipolis.com/documento/dc_fa0ca9da2e5f

How to cite

Plasma channel — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Plasma_channel (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_fa0ca9da2e5f (Metraipolis archive dc_fa0ca9da2e5f, sha256 48f4f55af56cc20c268592bfd1b8bf608f49e8b6e37f0b33941a84cfe347dabb)

BibTeX

@misc{dcfa0ca9da2e5f,
  title = {Plasma channel — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Plasma_channel},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_fa0ca9da2e5f; sha256 48f4f55af56cc20c268592bfd1b8bf608f49e8b6e37f0b33941a84cfe347dabb},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Plasma_channel. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

A plasma channel is a conductive channel of plasma. A plasma channel can be formed in the following ways. With a high-powered laser that operates at a certain frequency that will provide enough energy for an atmospheric gas to break into its ions, or form a plasma, such as in a Laser-Induced Plasma Channel, for example in an electrolaser. With a voltage higher than the dielectric breakdown voltage applied across a dielectric, and dielectric breakdown occurs. A plasma channel has a low electrical resistance and, once formed, will permit continuous current flow if the energy source that heats the plasma can be maintained. Unlike a normal electrical conductor, the resistance (and voltage drop) across an unconfined plasma channel decreases with increasing current flow, a property called negative resistance. As a result, an electric spark that initially required a very high voltage to initiate avalanche breakdown within the insulating gas will rapidly evolve into a hot, low-voltage electric arc if the electrical power source can continue to deliver sufficient power to the arc. Plasma channels tend to self constrict (see plasma pinch) due to magnetic forces stemming from the current flowing through the plasma. On Earth, plasma channels are most frequently encountered in lightning storms.

Tema degli esploratori: fisica e astronomia (deposito sistematico; ricerca «plasma physics»).
Fonte: Wikipedia in inglese, voce «Plasma channel» — https://en.wikipedia.org/wiki/Plasma_channel
Wikidata Q7201766 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q7201766
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Plasma_channel?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1369642935, consultata il 2026-10-07T19:16:52.343Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: c718ca1a30828e03dd7d302e762af4745d73c8d0402c5144c865180283601ca6