The Development of an Electron Beam Generator to Probe Connections between the Earth's Magnetosphere and Ionosphere

Physics

Scientific paper

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2194 Instruments And Techniques, 2494 Instruments And Techniques, 2794 Instruments And Techniques, 5494 Instruments And Techniques, 6994 Instruments And Techniques (1241)

Scientific paper

Space Dynamics Laboratory and the Utah State University Physics Department have undertaken the development of a high power electron beam generator (EBG) that can be used to probe the coupling between the earth's magnetosphere and ionosphere. The EBG employs a field emission cathode array in a Pierce electrostatic gun field geometry for the generation of a 40 KV electron beam at emission currents as high as 50 mA. The EBG has been proposed as part of a novel magnetosphere-ionosphere field-line tracing technique that can use a well-collimated, field-aligned beam of electrons ejected into the magnetosphere to create detectable perturbations in the ionosphere. This presentation will review the current progress associated with the development of a flight-qualifiable EBG design.

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