Atomic and Ion Collisions in Solids and at Surfaces: Theory, by Roger Smith

By Roger Smith

This e-book is an creation to the appliance of laptop simulation and concept within the learn of the interplay of full of life debris (1 ev to the MeV variety) with strong surfaces. The authors describe tools which are acceptable either to challenging collisions among nuclear cores of atoms right down to gentle interactions, the place chemical results or long-range forces dominate. the variety of capability purposes of the method is big. In floor technology, functions contain floor atomic constitution decision utilizing ion scattering spectroscopy or point research utilizing SIMS or different suggestions that contain intensity profiling. business purposes comprise optical or not easy coating deposition, ion implantation in semiconductor gadget manufacture or nanotechnology. The innovations defined will facilitate learning plasma-sidewall interplay in fusion units. This booklet should be of curiosity to graduate scholars and researchers, either educational and commercial, in floor technology, semiconductor engineering, thin-film deposition and particleSHsurface interactions in departments of physics, chemistry and electric engineering.

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Extra info for Atomic and Ion Collisions in Solids and at Surfaces: Theory, Simulation and Applications

Sample text

For bcc or diamond lattices, a many-body formulation is required to produce a stable lattice. 2 PARTICLE SEPARATION Fig. 3 A comparison of the ZBL potential for a two-particle Si-Cu system with self-consistent field (SCF) calculations. 1 The Lennard-Jones potential The Lennard-Jones potential was developed to represent noble gases and is based on the premise that atoms in a solid noble gas are only slightly distorted from the stable and closed-shell configuration they possess in the free state.

56) where N is the incident flux density and Afo the number of particles scattered into solid angle dfi per unit time. Both as and .

For the case of two interacting particles only, F = —dV(r)/dr, where F is the force acting on either of the particles whose mutual separation is r. The standard model of an atom is that it is constituted from a central nucleus whose diameter is of the order of 10~~4 A surrounded by orbital electrons, the diameter of the atom being of the order of 1 A. In the case of two-body interactions it is possible to draw some general conclusions regarding the form of V. We would expect that V —• 0 as r -> oo.

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