An analysis of spherical Langmuir probe characteristics in a collisionless plasma

Details An analysis of spherical Langmuir probe characteristics in a collisionless plasma An analysis of spherical Langmuir probe characteristics in a collisionless plasma

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974jajap..13.2037f&link_type=abstract

Japanese Journal of Applied Physics, vol. 13, Dec. 1974, p. 2037-2041.

Physics

Collisionless Plasmas, Electrostatic Probes, Ion Currents, Plasma Density, Maxwell-Boltzmann Density Function, Mercury Vapor, Plasma Diffusion, Plasma Sheaths

Scientific paper

Spherical Langmuir probe characteristics in a collisionless plasma are analyzed based on the theory of Bohm et al. (1949). This analysis is valid in the region in which the ratio of the probe radius to the Debye radius of the plasma is smaller than that in Lam's (1965) modified theory, and takes into consideration the 'distribution' of ion energy. Experiments to measure the plasma density and the floating potential in a mercury diffusion plasma are carried out, and good agreement between theoretical and experimental values of the floating potential is obtained.

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