Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nascp2469...89l&link_type=abstract
In NASA. Marshall Space Flight Center Double Layers in Astrophysics p 89-103 (SEE N87-23313 16-88)
Astronomy and Astrophysics
Astrophysics
Electric Fields, Electron Plasma, Magnetohydrodynamic Stability, Plasma Layers, Plasma Potentials, Space Charge, Current Density, Electron Distribution, Plasma Currents, Plasma Jets
Scientific paper
In a triple plasma device, the injection of electron current from the source chamber to the target chamber causes the formation of a potential double layer. At a low current density, the space charge of the injected current produces a virtual cathode-type potential double layer. This double layer is stable, and various wave instabilities are observed to associate with this double layer. As the current density is increased, the double layer becomes unstable, and a moving double layer results. As the current density is increased further, the enhanced ionization causes the neutralization of the space charge of the electron beam, and the beam plasma discharge is ignited.
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