Charged dust in the earth's magnetosphere. I - Physical and dynamical processes

Details Charged dust in the earth's magnetosphere. I - Physical and dynamical processes Charged dust in the earth's magnetosphere. I - Physical and dynamical processes

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.144..215h&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 144, no. 1-2, May 1988, p. 215-229.

Astronomy and Astrophysics

Astrophysics

32

Charged Particles, Earth Magnetosphere, Earth Orbital Environments, Interplanetary Dust, Micrometeoroids, Space Plasmas, Particle Size Distribution, Radiation Pressure, Solar Terrestrial Interactions, Space Debris

Scientific paper

The authors have considered the electrodynamic effects on small Al2O3 spherules dumped into the Earth's magnetosphere in large quantities during solid rocket propellant burns. The charges acquired by these grains in all regions of the terrestrial environment (plasmasphere, magnetosphere, and solar wind) are modest. Consequently electrodynamic effects are significant only at the lower end of the dust size spectrum (Rg ⪉ 0.1 μm). In that case, the electrodynamic forces conspire with solar radiation pressure to eliminate the grains from the magnetosphere in a comparatively short time. Although not studied in detail, the authors anticipate a similar fate for fine micrometeoroids entering the Earth's magnetosphere, with the electrodynamic effects playing an even more important role.

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