Velocity-dependent isotope fractionation in secondary-ion emission
- 15 January 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 35 (2) , 877-879
- https://doi.org/10.1103/physrevb.35.877
Abstract
The formation of secondary ions is subject to isotopic fractionation (differing ionization probabilities for two isotopes) that depends linearly on the inverse velocity of the ejected ions. Theoretically, such a correlation follows directly from an exponential dependence of the ionization probability P on , P∝exp(-/v). The parameter , derived from the experiment, amounts to ∼2× cm/sec for B, Si, and Ca ions.
Keywords
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