Shapiro, M. H. and Tombrello, T. A. and Harrison, Don E., Jr. (1988) Simulation of isotopic mass effects in sputtering, II. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 30 (2). pp. 152-158. ISSN 0168-583X. https://resolver.caltech.edu/CaltechAUTHORS:20141029-132243837
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Abstract
We have reinvestigated isotope effects in sputtering from the Ar^+−Cu and the Ar^+-pseudo-Cu systems using the multiple-interaction (MI) simulation technique with a target generator that maintains a fixed ratio of light to heavy atoms. A new target configuration was generated prior to the simulation of each impact. The changes in target generation technique were made in response to a suggestion by Sigmund that the results of a previous simulation study of this problem may have included large systematic errors. In this study targets with equal numbers of light and heavy atoms were generated. Mass differences ranged from 3% to 20%. The sputtered material generally was found to be enriched in the light isotope. This enrichment was greatest for material ejected near the normal to the target surface. Our present results are in good agreement with our previous simulations and with the experimental results of Gnaser et al.
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| Additional Information: | © 1988 Elsevier B.V. Received 3 August 1987 and in revised form 2 November 1987. Supported in part by the US National Science Foundation DMR83-06541 and DMR86-15641 at Caltech, DMR83-06546 at CSUF). | |||||||||
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| Issue or Number: | 2 | |||||||||
| Record Number: | CaltechAUTHORS:20141029-132243837 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141029-132243837 | |||||||||
| Official Citation: | Shapiro, M. H., Tombrello, T. A., & Harrison Jr, D. E. (1988). Simulation of isotopic mass effects in sputtering, II. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 30(2), 152-158. doi: http://dx.doi.org/10.1016/0168-583X(88)90111-5 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 51016 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Jason Perez | |||||||||
| Deposited On: | 29 Oct 2014 23:10 | |||||||||
| Last Modified: | 03 Oct 2019 07:28 |
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