Collisionless magnetic reconnection dynamics with electron inertia and parallel electron compressibility
Abbreviated Journal Title
J. Plasma Phys.
HIGH-TEMPERATURE PLASMAS; FIELD-LINE RECONNECTION; TOKAMAKS; DRIVEN; FLUID; SLAB; Physics, Fluids & Plasmas
Collisionless magnetic reconnection dynamics is considered by including the effects of electron inertia as well as parallel electron cornpressibility. A fluid treatment is adopted for both electrons and ions. Collisionless plasma dynamics properties near a two-dimensional X-type magnetic neutral line in the steady state are explored. The effects of electron inertia and parallel electron compressibility on the hyperbolicity (or lack thereof) of the magnetic field lines in the neutral layer are discussed. A unified linear tearing-mode formulation incorporating both electron inertia and parallel electron compressibility is given. The parallel-electron-compressibility branch is shown to couple in general to the electron-inertia branch in the presence of resistivity. A sufficient condition for linear stability in the Lyapunov sense for steady states of this collisionless plasma system signifying current confinement is deduced. Bounds on the equilibrium current gradient are shown to constitute sufficient conditions for nonlinear stability in the Lyapunov sense for steady states via nonlinear bounds for a suitable perturbation norm.
Journal of Plasma Physics
"Collisionless magnetic reconnection dynamics with electron inertia and parallel electron compressibility" (2007). Faculty Bibliography 2000s. 7647.