Zelek S. Herman, Robert F. Kirchner, et al.
Inorganic Chemistry
Paper
The Theory of Ionization Probability in Sputtering
Abstract
A very simple derivation is given of the ionization probability P − for negative ions sputtered off a metal surface. The result P −≈e−(ϕ−A)/cv⊥ shows the experimentally observed dependences on work function ϕ, atomic affinity A, and outwards velocity v ⊥. Estimates of c show good agreement with experiment, too. The physical picture behind the process is discussed. © 1983 IOP Publishing Ltd.
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