Double probe theory for a low-density flowing collisionless plasma

Details Double probe theory for a low-density flowing collisionless plasma Double probe theory for a low-density flowing collisionless plasma

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979p%26ss...27..303c&link_type=abstract

Planetary and Space Science, vol. 27, Mar. 1979, p. 303-305.

Physics

1

Collisionless Plasmas, Magnetohydrodynamic Flow, Plasma Probes, Rarefied Plasmas, Charged Particles, Debye Length, Mean Free Path, Plasma Density, Volt-Ampere Characteristics

Scientific paper

Existing theory for cylindrical and spherical probes are used to derive expressions for double-probe current-voltage characteristics under low density, flowing collisionless conditions. These conditions prevail when the charged particle mean free path is much greater than the Debye length, which in turn is greater than the probe radius, and ion thermal velocity is less than or around the probe speed, which in turn is much smaller than the electron thermal velocity. Explicit formulae are given for calculating electron temperature and plasma density for both spherical and cylindrical probes.

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