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A study of the 3D electron transfer from a spherical nano-particle in vacuum is presented as a continuation of a similar 1D analysis. The 3D confinement of the electronic states is analyzed and the emission current in vacuum is obtained as a function of the applied voltage on a distant anode.
The field enhancement factor for a cylindrically symmetric structure is obtained using an electrostatic model based on a self-validating algorithm. The correct 0 V equipotential line is calculated such that it matches the surface of the given structure.
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