Hamiltonian vortices and reconnection in magnetized plasmas are investigated analytically and numerically using a two-fluid model. The equations are written in the Lagrangian form of three fields that are advected with different velocities. This system can be considered as a generalization and extension of the two-dimensional Euler equation for an ordinary fluid. It is pointed out that these equations allow solutions in. the form of singular current-vortex filaments, drift-Alfven vortices and magnetic islands, and admit collisionless magnetic reconnection where magnetic flux is converted into electron momentum and ion vorticity.
|Autori interni:||PEGORARO, FRANCESCO|
|Autori:||Kuvshinov BN; Lakhin VP; Pegoraro F; Schep TJ|
|Titolo:||Hamiltonian vortices and reconnection in a magnetized plasma|
|Anno del prodotto:||1998|
|Digital Object Identifier (DOI):||10.1017/S0022377898006655|
|Appare nelle tipologie:||1.1 Articolo in rivista|