Physics
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..131h&link_type=abstract
Geophysical Research Letters, vol. 5, Feb. 1978, p. 131-134.
Physics
20
Earth Magnetosphere, Electrical Resistivity, Electrostatics, Electron Beams, Ion Distribution, Plasma Frequencies
Scientific paper
Electrostatic shocks and double layers are defined and compared with anomalous resistivity. Electrostatic shocks or double layers are discontinuities in the plasma potential and are characterized by the plasma normal mode that creates them. While double layers or electrostatic shocks are zero frequency potential discontinuities in the lab or shock frame, respectively, with a single characteristic scale size, anomalous resistivity results from enhanced collisions with many waves of nonzero frequency and different wavelengths, and requires that Ohm's law be satisfied at each point in space. Experiments relevant to the study of these magnetosphere phenomena are discussed. It is suggested that turbulence and anomalous resistivity may provide local modification of particle distribution functions essential to the production of electrostatic shocks and double layers in space plasmas.
Hudson Mary K.
Mozer Forrest S.
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