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Influence of space charge on field emission of electrons from sharp edges

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1 Author(s)
Wheeler, C.B. ; Blackett Lab., Imperial Coll., London, UK

A sharp-edged cathode and its adjacent anode are represented as a section of a pair of coaxial cylinders with an inner radius r/sub 0/ and an outer radius r/sub 1/. The field emission current density J is determined as a function of the anode voltage V/sub 1/ and the cathode work function potential phi for degrees of space-charge that lead to a cathode field E in the range 0.9 E/sub 0/>

Published in:

Science, Measurement and Technology, IEE Proceedings A  (Volume:139 ,  Issue: 4 )