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Discover Ag Technology. SRIM is a collection of software packages which calculate many features of the transport of ions in matter. Typical applications include:. SRIM includes quick calculations which produce tables of stopping powers, range and straggling distributions for any ion at any energy in any elemental target.
More elaborate calculations include targets with complex multi-layer configurations. The ion beam also causes damage to solid targets by atom displacement. Most of the kinetic effect s associated with the physics of this kind of interactions are found in the SRIM package.
The calculation of sputtering, by any ion at any energy, is included in the SRIM package. Typical applications are included. The science of ion beams goes back almost a century to the earliest explanations of radioactive particles transiting thin films The field is so rich that it is difficult for a non-expert to understand any of the current papers in the field. But basically, the stopping of ions in matter can not be calculated from first principles. Hidden in stopping theories are parameters which normalize calculated stopping powers to existing data.
Then some of the major parameters are reviewed and it will be shown how they are derived from experimental data. Examples are shell corrections , mean ionization potentials, the effective charge of ions and the Fermi velocity of solids. Over papers have been published in the experimental stopping of ions in solids. Experimental measurements of stopping powers is a difficult task, and there is wide variation in the results.. Plots will show how existing stopping calculations compare to experimental data from these papers.
Since the stopping calculations are based in great part on theory, the interpolation of stopping powers between various ions and targets is often more accurate than individual measurements, especially for difficult targets.
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