Symmetric theory of probe-plasma interactions

Details Symmetric theory of probe-plasma interactions Symmetric theory of probe-plasma interactions

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981p%26ss...29..555m&link_type=abstract

Planetary and Space Science, vol. 29, May 1981, p. 555-577. Research supported by the Bundesministerium für Forschung und Techn

Computer Science

2

Charge Distribution, Collisionless Plasmas, Electric Potential, Plasma Interactions, Plasma Probes, Space Plasmas, Spacecraft Charging, Boundary Conditions, Boundary Value Problems, Charged Particles, Distribution Functions, Earth Ionosphere, Electrostatic Probes, Halley'S Comet, Plasma Radiation, Plasma Sheaths, Solar Wind, Vlasov Equations

Scientific paper

A method is developed to compute the charge densities and potentials around a spherical or cylindrical probe in a plasma at rest. The method is based on the Vlasov-Poisson system, which describes distribution functions of all plasma constituents. Various ambient plasma and charged particle emission properties are represented by the boundary conditions for the distribution functions in the phase space. By use of a numerical iterative procedure, potential and space charge densities, and current densities of all plasma constituents, are calculated. The approach derives in part from the thick sheath and thin sheath approximation of the classical Langmuir theory. The symmetric probe theory is applied to three different spacecraft environments: (1) a probe in the ionosphere with negative surface potentials; (2) a probe in the solar wind with strong photoelectron emission; (3) a probe in a transition region with strong plasma emission.

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