The dynamics and upstream distributions of ions reflected at the earth's bow shock

Details The dynamics and upstream distributions of ions reflected at the earth's bow shock The dynamics and upstream distributions of ions reflected at the earth's bow shock

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.7407b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Sept. 1, 1984, p. 7407-7422. Research supported by the Science and En

Astronomy and Astrophysics

Astronomy

19

Bow Waves, Ion Motion, Particle Interactions, Shock Discontinuity, Solar Terrestrial Interactions, Astronomical Models, Collisionless Plasmas, Distribution Functions, Particle Trajectories, Space Plasmas, Specular Reflection

Scientific paper

The trajectories of test particles in a simplified numerical model of a supercritical oblique collisionless shock are used to investigate the interaction of solar wind thermal ions with the earth bow shock. The shock is modeled as a finite planar discontinuity of the electrostatic potential and the magnetic field. Potential jump at the shock and at the downstream magnetic field are calculated using the Rankine-Hugoniot conservation relations. The effect of shock geometry on both the particle trajectories and distributions functions are studied. It is found that the shock can produce backstreaming ions by reflecting a small fraction of the incident distribution. The reflected particle trajectories are divided into three types: singularly reflected; multiple traversal; and multiple bounce. The behavior of these different types of backstreaming following their encounter with the shock surface of greater than 30 KeV is examined in detail.

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