Particle acceleration in 3D single current sheets formed in the solar corona and heliosphere: PIC approach

摘要: Acceleration of protons and electrons in a reconnecting current sheet (RCS) is investigated with the test particle particle-in-cell (PIC) approaches 3D magnetic topology. PIC simulations confirm spatial separation respect to midplane depending on guiding field. Simulation reveals that occurs topologies strong fields lasts as long particles are kept dragged into sheet. This produces polarisation electric field induced by plasma feedback presence accelerated particles, which shape can change from symmetric towards (for weak field) fully asymmetric field). Particles found at any sheets present heliosphere energies up hundred keV for MeV protons. The maximum energy gained during their motion inside defined its topology (the ratio components), side location X-nullpoint, where enter In solar corona weaker fields, circulating about large distances proton getting accelerated, creating clouds high electrons, be source hard X-ray emission coronal sources flares. These ejected same footpoint after latter reach sufficicent break bounced lower cannot turning instead some distance D before 180 degrees initial motion. Also beams transit generate turbulent form Langmuir waves (electrons) or ion-acoustic (protons).