HR: 1340h
AN: SM33C-0464    [Abstracts]
TI: Charged Particle Acceleration in Time-Dependent Electric Fields Associated With X-Type Neutral Points
AU: Yound, R
EM: ryo@bas.ac.uk
AF: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET United Kingdom
AU: * Petkaki, P
EM: ppe@bas.ac.uk
AF: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET United Kingdom
AB: Rapid variations of energy release are observed in several solar and magnetospheric phenomena, such solar flares and magnetospheric magnetic reconnection. These variations could imply an energy release mechanism that is nonsteady but time-dependant possibly through a time-varying electric field. We present results of numerical calculations of particle (electrons and ions) trajectories in time-varying electric fields in combined X-type neutral point geometries. Details of the trajectories are presented for realistic timescales. We study the effect of the acceleration mechanism on initial thermal and non-thermal distributions and comment on the efficiency and the applicability of the mechanism on magnetic reconnection scenarios.
DE: 7807 Charged particle motion and acceleration
DE: 7839 Nonlinear phenomena (4400, 6944)
DE: 7845 Particle acceleration
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005