Tool kit for antennae and thermal noise near the plasma frequency

Details Tool kit for antennae and thermal noise near the plasma frequency Tool kit for antennae and thermal noise near the plasma frequency

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.2405m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, March 1, 1989, p. 2405-2415.

Physics

124

Plasma Diagnostics, Space Plasmas, Spacetennas, Thermal Noise, Antenna Design, Calibrating, Electrons, Noise Spectra, Plasma Frequencies

Scientific paper

The bases are provided for a straightforward derivation of either the quasi-thermal noise spectrum or the impedance of a given electric antenna near the plasma frequency, in order to calibrate or diagnose space plasmas. Analytical expressions and numerical results are presented for wire or sphere dipoles in an anisotropic plasma with one or two Maxwellian electron populations, encompassing the contribution of particles collected and/or emitted by the antenna surface. Modifications entailed by the use of one or more complex antenna geometries and by the presence of either a drifting or a magnetized plasma are noted.

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