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Hollow cathode operation at high discharge currents

Friedly, Verlin Joe.
[Cleveland, Ohio] : Lewis Research Center, National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the National Technical Information Service, 1990] 1990

Improvement of ion thruster design

Carpenter, R. T.
[Washington, D.C.] : National Aeronautics and Space Administration, [1985?] 1985

Optimization of a magnet circuit design for a cylindrical mass spectrometer

Waltham, Mass. : Raytheon Company Microwave and Power Tube Division ; [College Park, Md. : University of Maryland Institute of Physical Science Technology ; [Washington, DC : National Aeronautics and Space Administration, 1983] 1983