Approximate equations for space-charge limited currents
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We derive approximate equations for space-charge limited currents for planar, cylindrical, and spherical diodes, and in transfer tubes. The accuracy of the equations for the planar diode is about 1% for all voltages considered. We conclude that these currents can be described by simple equations to within a few percent for a broad class of space-charge limited currents and for nearly all practical voltages.
KeywordsApproximate Equation Radius Ratio Transfer Tube Current Density Beam Planar Diode
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- 4.L. S. Bogdankevich and A. A. Rukhadze, Usp. Fiz. Nauk,103, 609 (1971).Google Scholar