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- W2086714093 abstract "A current balance on the main discharge chamber of an electron bombardment thruster is carried out. It is shown that the discharge current is the sum of the net cathode emission current, the beam current, and the ion current to cathode potential surfaces. Measurements of ion currents outside the virtual anode surface in a SERT II divergent magnetic field thruster show that relatively few ions cross this surface. This implies that ions are directed preferentially toward the anode and cathode pole pieces. A simple theoretical model useful as an aid in the design of the baffle aperture region of a hollow cathode equipped thruster is developed. The electron diffusion process through the aperture is modeled in accordance with the Bohm diffusion theory. The model is shown to yield consistent results for a given thruster geometry over substantial changes in operating conditions. The model's design usefulness is limited by a factor of two uncertainty observed over different thruster/cathode region geometries and by the accuracy to which the plasma parameters required as inputs to the model can be specified." @default.
- W2086714093 created "2016-06-24" @default.
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- W2086714093 date "1981-04-21" @default.
- W2086714093 modified "2023-09-28" @default.
- W2086714093 title "Design model for the baffle aperture region of a hollow cathode thruster" @default.
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- W2086714093 doi "https://doi.org/10.2514/6.1981-758" @default.
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