About: Classical diffusion

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Classical diffusion is a key concept in fusion power and other fields where a plasma is confined by a magnetic field within a vessel. It considers collisions between ions in the plasma that causes the particles to move to different paths and eventually leave the confinement volume and strike the sides of the vessel.

Attributes	Values
rdfs:label	Classical diffusion (en)
rdfs:comment	Classical diffusion is a key concept in fusion power and other fields where a plasma is confined by a magnetic field within a vessel. It considers collisions between ions in the plasma that causes the particles to move to different paths and eventually leave the confinement volume and strike the sides of the vessel. (en)
foaf:depiction
dcterms:subject	Diffusion Plasma physics
Wikipage page ID	40471625 (xsd:integer)
Wikipage revision ID	1055594923 (xsd:integer)
Link from a Wikipage to another Wikipage	David Bohm Hsu diffusion Neoclassical transport Electron Fusion power Magnetic field Bohm diffusion Stellarator ZETA (fusion reactor) Tokamak Turbulence Ion Nuclear fusion Diffusion Diffusion coefficient Atom Diffusion Magnetic field strength Plasma physics Plasma (physics) Random walk Plasma diffusion Maxwell-Boltzmann statistics Plasma instabilities
Link from a Wikipage to an external page	https://books.google.com/books%3Fid=ABCLDwAAQBAJ
sameAs	Classical diffusion Classical diffusion Classical diffusion
dbp:wikiPageUsesTemplate	dbt:Cite_book dbt:Portal
thumbnail	wiki-commons:Special:FilePath/Ion_collisions_in_weak_and_strong_magnetic_fields_compared.svg?width=300
has abstract	Classical diffusion is a key concept in fusion power and other fields where a plasma is confined by a magnetic field within a vessel. It considers collisions between ions in the plasma that causes the particles to move to different paths and eventually leave the confinement volume and strike the sides of the vessel. The rate of diffusion scales with 1/B2, where B is the magnetic field strength, implies that confinement times can be greatly improved with small increases in field strength. In practice, the rates suggested by classical diffusion have not been found in real-world machines, where a host of previously unknown plasma instabilities caused the particles to leave confinement at rates closer to B, not B2, as had been seen in Bohm diffusion. The failure of classical diffusion to predict real-world plasma behavior led to a period in the 1960s known as "the doldrums" where it appeared a practical fusion reactor would be impossible. Over time, the instabilities were found and addressed, especially in the tokamak. This has led to a deeper understanding of the diffusion process, known as neoclassical transport. (en)
gold:hypernym	Diffusion
prov:wasDerivedFrom	wikipedia-en:Classical_diffusion?oldid=1055594923&ns=0
page length (characters) of wiki page	7270 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Classical_diffusion
is Link from a Wikipage to another Wikipage of	Hsu diffusion Neoclassical transport Fusion power Bohm diffusion Plasma diffusion
is foaf:primaryTopic of	wikipedia-en:Classical_diffusion

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