A Field Effect Spacecraft Neutraliser for Fundamental Physics Missions

Details A Field Effect Spacecraft Neutraliser for Fundamental Physics Missions A Field Effect Spacecraft Neutraliser for Fundamental Physics Missions

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..61k&link_type=abstract

Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard

Physics

Scientific paper

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 location on each array. Process control of the remaining techniques including plasma enhanced vapour deposition, wet and dry plasma etch, and various coatings has been important in achieving robust reproducible devices suitable for space use.

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