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Research Article
Computational solution of the atomic mixing equations: special methods and algorithm of IMPETUS II
Article first published online: 18 DEC 1998
DOI: 10.1002/(SICI)1099-1204(199807/08)11:4<207::AID-JNM302>3.0.CO;2-I
Copyright © 1998 John Wiley & Sons, Ltd.
Issue
1099-1204/asset/cover.gif?v=1&s=0f28842dc1cec015c761d199ee080528b22ef746 "International Journal of Numerical Modelling: Electronic Networks, Devices and Fields")
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields
Volume 11, Issue 4, pages 207–219, July/August 1998
Additional Information
How to Cite
Kirkup, S. M. and Wadsworth, M. (1998), Computational solution of the atomic mixing equations: special methods and algorithm of IMPETUS II. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 11: 207–219. doi: 10.1002/(SICI)1099-1204(199807/08)11:4<207::AID-JNM302>3.0.CO;2-I
Publication History
- Issue published online: 18 DEC 1998
- Article first published online: 18 DEC 1998
- Manuscript Revised: 5 FEB 1998
- Manuscript Received: 12 AUG 1996
Funded by
- EPSRC
- DRA
- Abstract
- References
- Cited By
Abstract
The IMPETUS II code simulates the atomic mixing and particle emission that occurs when a solid is bombarded by energetic particles (as in SIMS or SNMS). The underlying model consists of a system of partial differential equations that are solved by a finite difference method (FDM). Special techniques are also employed to model thin layers and sharp interfaces, to deal efficiently with wide homogeneous layers (when the solution is tending to a steady state), to model linear diffusion in order to smooth the sharp interfaces before they enter to domain of the FDM.
In this paper the special techniques are described in detail. Results from test problems, demonstrating these techniques, are shown. An algorithm that describes the way the IMPETUS II code is structured is given. © 1998 John Wiley & Sons, Ltd.