Abstract:

We describe the design, construction and testing of a field effect emitter array, a low power source of electrons providing up to 6mA, for spacecraft neutralising. The emitter array has been designed and engineered to be suitable for integration into the micro propulsion system of fundamental physics missions such as LISA Pathfinder. The silicon emitters are fabricated using micro fabrication techniques involving electron beam lithography to ensure uniformity and precise control of emitter lo...

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