Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...123...73l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 123, no. 1, June 1983, p. 73-79.
Astronomy and Astrophysics
Astrophysics
3
Electric Discharges, Field Emission, Interplanetary Medium, Saturn Rings, Space Plasmas, Astronomical Models, Electric Fields
Scientific paper
Field emission is discussed as a consequence of the rearrangement of charges over the surface of a small dielectric or conducting charged body caused by electric influence during an encounter with another body or by an external electric field. The sudden local increase of the electric field following the encounter can destabilize the equilibrium and produce violent charged particle emission, generating strong discharge current beams. This mechanism is likely to occur in a large variety of circumstances in planetary rings and the interplanetary medium. For illustrative purposes it is applied to Saturn's rings, obtaining curves for the electric field and the emitted current flux.
Lafon Jean-Pierre J.
Millet Jean M.
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