HR: 0830h
AN: SH51A-02    [Abstracts]
TI: Energy spectra of fully or partially separated electron beam at ejection from an current sheet with the guiding magnetic field
AU: * Zharkova, V
EM: v.v.zharkova@brad.ac.uk
AF: Bradford University, Cybernetics Department, Bradford, BD7 1DP
AU: Gordovskyy, M
EM: m.gordovskyy@brad.ac.uk
AF: Bradford University, Cybernetics Department, Bradford, BD7 1DP
AB: Electron and proton energy spectra gained at acceleration by a super-Dricer electric field are investigated in the non-neutral reconnecting current sheet (RCS) with a non-zero longitudinal component of magnetic field (a guiding field) directed along the electric field. The other transverse and tangential magnetic component are considered varying with the distances from the X null-point. The proton and electron energy spectra are calculated numerically from a motion equation using the particle-in-cell approach for the model RCSs with constant and variable densities. In the presence of a strong or moderate guiding field protons were found fully or partially separated from electrons at ejection from a RCS into the opposite semiplanes, 'electron' and 'proton' ones while for a weak guiding field they are ejected symmetrically as neutral beams. The particles ejected from a RCS with a very strong guiding field have the power-law energy spectra with spectral indices about 1.5 for protons and 2.0 for electrons. For a moderate guiding field the electron and proton spectra are a combination of power law and thermal-like ones.
UR: http://kinetics.inf.brad.ac.uk
DE: 2118 Energetic particles, solar
DE: 7519 Flares
DE: 7554 X rays, gamma rays, and neutrinos
DE: 7807 Charged particle motion and acceleration
DE: 7835 Magnetic reconnection
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2005 Joint Assembly