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- Helicon_(physics) abstract "A helicon is a low frequency electromagnetic wave that can exist in plasmas in the presence of a magnetic field. The first helicons observed were atmospheric whistlers, but they also exist in solid conductors or any other electromagnetic plasma.Helicons have the special ability to propagate through pure metals, given conditions of low temperature and high magnetic fields. Most electromagnetic waves in a normal conductor are not able to do this, since the high conductivity of metals (due to their free electrons) acts to screen out the electromagnetic field. Indeed, normally an electromagnetic wave would experience a very thin skin depth in a metal: the electric or magnetic fields are quickly reflected upon trying to enter the metal. (Hence the shine of metals.) However, skin depth depends on an inverse proportionality to the square root of angular frequency. Thus a low frequency electromagnetic wave may be able to overcome the skin depth problem, and thereby propagate throughout the material.A helicon discharge is an excitation of plasma by helicon waves induced through radio frequency heating. The difference between a helicon plasma source and an inductively coupled plasma is the presence of a magnetic field directed along the axis of the antenna. The presence of this magnetic field creates a helicon mode of operation with higher ionization efficiency and greater electron density than a typical ICP. The Australian National University, in Canberra, Australia, is currently researching applications for this technology. A commercially developed magnetoplasmadynamic engine called VASIMR also uses helicon discharge for generation of plasma in its engine. Potentially, Helicon Double Layer Thruster plasma based rockets are suitable for interplanetary travel.".
- Helicon_(physics) wikiPageID "3683672".
- Helicon_(physics) wikiPageLength "3577".
- Helicon_(physics) wikiPageOutDegree "15".
- Helicon_(physics) wikiPageRevisionID "544259720".
- Helicon_(physics) wikiPageWikiLink Category:Electromagnetic_radiation.
- Helicon_(physics) wikiPageWikiLink Dielectric_heating.
- Helicon_(physics) wikiPageWikiLink Electromagnetic_radiation.
- Helicon_(physics) wikiPageWikiLink Hall_effect.
- Helicon_(physics) wikiPageWikiLink Helicon_double-layer_thruster.
- Helicon_(physics) wikiPageWikiLink Indium.
- Helicon_(physics) wikiPageWikiLink Inductively_coupled_plasma.
- Helicon_(physics) wikiPageWikiLink Liquid_helium.
- Helicon_(physics) wikiPageWikiLink Magnetoresistance.
- Helicon_(physics) wikiPageWikiLink Plasma_(physics).
- Helicon_(physics) wikiPageWikiLink Skin_effect.
- Helicon_(physics) wikiPageWikiLink Variable_Specific_Impulse_Magnetoplasma_Rocket.
- Helicon_(physics) wikiPageWikiLink Whistler_(radio).
- Helicon_(physics) wikiPageWikiLinkText "Helicon (physics)".
- Helicon_(physics) wikiPageWikiLinkText "Helicon".
- Helicon_(physics) wikiPageWikiLinkText "helicon wave".
- Helicon_(physics) wikiPageWikiLinkText "helicon".
- Helicon_(physics) wikiPageUsesTemplate Template:Reflist.
- Helicon_(physics) subject Category:Electromagnetic_radiation.
- Helicon_(physics) hypernym Wave.
- Helicon_(physics) type Band.
- Helicon_(physics) type Electrodynamic.
- Helicon_(physics) comment "A helicon is a low frequency electromagnetic wave that can exist in plasmas in the presence of a magnetic field. The first helicons observed were atmospheric whistlers, but they also exist in solid conductors or any other electromagnetic plasma.Helicons have the special ability to propagate through pure metals, given conditions of low temperature and high magnetic fields.".
- Helicon_(physics) label "Helicon (physics)".
- Helicon_(physics) sameAs Q4135014.
- Helicon_(physics) sameAs Helikon_i_fysikk.
- Helicon_(physics) sameAs m.09v7yn.
- Helicon_(physics) sameAs Геликон_(физика).
- Helicon_(physics) sameAs Q4135014.
- Helicon_(physics) wasDerivedFrom Helicon_(physics)?oldid=544259720.
- Helicon_(physics) isPrimaryTopicOf Helicon_(physics).