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Plasma diffusion — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Plasma_diffusion
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T14:52:50.626Z
SHA-256 of the archived text: 41fd3fb0840fff184f5b54d66f9917f412320d501777bf378aa8d040f8328a5c
Stable URL of this page: https://metraipolis.com/documento/dc_9fe9243bb2eb

How to cite

Plasma diffusion — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Plasma_diffusion (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_9fe9243bb2eb (Metraipolis archive dc_9fe9243bb2eb, sha256 41fd3fb0840fff184f5b54d66f9917f412320d501777bf378aa8d040f8328a5c)

BibTeX

@misc{dc9fe9243bb2eb,
  title = {Plasma diffusion — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Plasma_diffusion},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_9fe9243bb2eb; sha256 41fd3fb0840fff184f5b54d66f9917f412320d501777bf378aa8d040f8328a5c},
  year = {2026}
}

Archived text

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

In plasma physics, plasma diffusion is the transport of charged particles in a plasma resulting from spatial gradients in particle density and, in many cases, temperature. In contrast to diffusion in neutral gases, the motion of electrons and ions in a plasma is not generally independent, because their dynamics are coupled through electromagnetic interactions. In collisional plasmas, diffusion processes are influenced by self-consistent electromagnetic fields that arise when electrons and ions respond differently to spatial gradients. These fields act to reduce charge separation and couple the motion of the charged species. As a result, the diffusion of electrons and ions is typically linked rather than occurring at independent rates, leading to a collective transport process often described in terms of ambipolar diffusion. Plasma diffusion across a magnetic field is an important topic in magnetic confinement of fusion plasma. It especially concerns how plasma transport is related to the strength of an external magnetic field B. Classical diffusion predicts the 1/B2 scaling, while Bohm diffusion, borne out of experimental observations from early confinement machines, was conjectured to follow the 1/B scaling. It is still an area of active research.

Tema degli esploratori: fisica e astronomia (deposito sistematico; ricerca «plasma physics»).
Fonte: Wikipedia in inglese, voce «Plasma diffusion» — https://en.wikipedia.org/wiki/Plasma_diffusion
Wikidata Q16956934 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q16956934
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Plasma_diffusion?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 1352229538, consultata il 2026-10-07T14:26:01.465Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 5075124799a2d4c7798442574248672497f0b5b149ff661edd7bac9e7f9e24ad