Dynamics of dust in a plasma sheath and injection of dust into the plasma sheath above moon and asteroidal surfaces

Details Dynamics of dust in a plasma sheath and injection of dust into the plasma sheath above moon and asteroidal surfaces Dynamics of dust in a plasma sheath and injection of dust into the plasma sheath above moon and asteroidal surfaces

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992em%26p...56....7n&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 56, no. 1, Jan. 1992, p. 7-34.

Mathematics

29

Asteroids, Lunar Dust, Lunar Surface, Planetary Surfaces, Plasma Sheaths, Boltzmann Distribution, Charged Particles, Equations Of Motion, Gravitational Effects, Mathematical Models, Particle Size Distribution

Scientific paper

Single dust particle dynamics in a plasma Debye sheath near the surface of solid bodies in space is examined. The electric field and the equilibrium charge of a dust particle are computed as functions of position in the sheath. The position where the electric force on a dust particle at charge equilibrium balances the gravitational force is found. The charge delay of a moving dust particle is taken into account by numerical solution of the equation of motion and by solving the linearized equation of motion. Circumstances under which dust particles ejected from the surface will be 'floated' and come to rest in the sheath are determined, and possible dust sources for the sheath are discussed.

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