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Enhancement factor γ of a sharp emitting tip: A revisit with the aim of a simple formula for?

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3 Author(s)
Kokkorakis, G.C. ; Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece ; Kyritsakis, A. ; Xanthakis, J.P.

We have revisited the problem of the enhancement factor γ of a sharp tip. We have simulated the tip apex by an ellipsoid and by a proper solution in spheroidal coordinates we have found a simple formula for γ in terms of the corresponding γ of the hemisphere on a post (HOP) problem and of the sharpness S=R1/R2 of the tip where R1, R2 are the radii of the ellipsoid.

Published in:

Vacuum Nanoelectronics Conference (IVNC), 2011 24th International

Date of Conference:

18-22 July 2011