Physics
Scientific paper
Aug 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.6089s&link_type=abstract
Journal of Geophysical Research, vol. 87, Aug. 1, 1982, p. 6089-6097.
Physics
53
Electromagnetic Fields, Geomagnetic Tail, Magnetic Variations, Magnetoplasmadynamics, Particle Acceleration, Auroral Ionization, Neutral Sheets, Particle Energy, Particle Trajectories, Shock Wave Interaction
Scientific paper
Particle trajectories and acceleration are numerically studied in time-varying electric and magnetic fields that are obtained by a previous MHD simulation of an externally driven reconnection. Electron and proton orbits are traced under the influence of the developing reconnection fields for various initial particle positions and velocities. A method of continuation of local analytic solution in a particle-pushing algorithm is adopted. The orbit calculations show that when particles encounter a slow shock, they experience a large orbit modification. Particularly, a proton that encounters a slow shock while spiraling along a reconnected magnetic field line after being accelerated at the neutral line is kicked out of the field line and executes a complicated motion. Electrons residing at or approaching near the X-type neutral line are accelerated to an energy range of auroral particles and then are ejected from the neutral line.
Matsumoto Haru
Nagai Katsuhiko
Sato Takeshi
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