'Ambipolar diffusion' and magnetic reconnection

Autor:	Alexander V. Stepanov, Yuriy T. Tsap
Rok vydání:	2010
Předmět:	Physics Condensed matter physics Ambipolar diffusion Astronomy and Astrophysics Magnetic reconnection Astrophysics Plasma Magnetic field Nanoflares Physics::Plasma Physics Space and Planetary Science Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Diffusion (business)
Zdroj:	Proceedings of the International Astronomical Union. 6:302-305
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921311007174
Popis:	Based on the three-fluid approximation the influence of the neutral component of hydrogen plasma on Joule dissipation of electric currents are considered. As distinguished from Mestel & Spitzer (1956) and Parker (1963) it has been shown that the magnetic flux may be not conserved in the case of the “ambipolar diffusion” due to collisions between ions and neutrals. This is explained by the ion acceleration under the action of Ampere's force. Joule dissipation is determined by electron and ion collisions in a partially ionized plasma. Plasma evacuation from current sheets is the effective mechanism of its cooling. Thickness of a current sheet can achieve up to hundreds of kilometers in the solar chromosphere. The origin of the solar chromospheric jets observed with the Hinode satellite are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8572452d5b285756e0f14cfb6baebb2f https://doi.org/10.1017/s1743921311007174 Zobrazit plný text záznamu Plný text ve formátu PDF