A simple formula for low-energy sputtering yields |
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Authors: | Ch. Steinbrüchel |
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Affiliation: | (1) Laboratories RCA Ltd., Badenerstrasse 569, CH-8048 Zürich, Switzerland |
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Abstract: | A simple formula for low-energy sputtering yields of elemental targets is presented. The formula follows directly from Sigmund's theory but includes a modified form of the function (Mt/Mp) and an accurate expression for the nuclear stopping cross section. Good agreement with experimental results is obtained for the projectiles Ne, Ar, Kr sputtering not too reactive surfaces at energies 1 keV. Further experiments are suggested as well as theoretical work concerning the meaning of the surface binding energy and the effect of the surface on the sputtering process in general. |
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Keywords: | 79.20 |
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