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Computational solution of the atomic mixing equations

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Kirkup, Stephen Martin ORCID: 0000-0002-9680-7778, Wadsworth, M., Armour, D. G., Badheka, R. and Van Den Berg, J. A. (1998) Computational solution of the atomic mixing equations. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 11 (4). pp. 189-205. ISSN 0894-3370

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Official URL: http://dx.doi.org/10.1002/(SICI)1099-1204(199807/0...

Abstract

The atomic mixing model that forms the basis of the IMPETUS software is described in detail. The model simulates the mixing and particle emission that occurs when a solid is bombarded with energetic particles, such as in SIMS or SNMS. The methods employed for computing the deposition of the bombarding particles and their energies along with the modelling of the particle yield and the surface recession speed are described. The material volume concentrations are governed by a set of partial differential equations. A description of the finite element method that is employed for their solution is given. Results from the application of IMPETUS II to a number of typical structures are given.

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