Au, Ir, Pt, Rh, Ti, and W foils were implanted with ⁵⁷Fe ions with doses from 10¹⁵ to 5×{}10¹⁶ ions/cm² and studied at room temperature by conversion electron M\"ossbauer spectroscopy. It has been proved that the macroscopic heat of solution of Fe in respective metals is a primary parameter determining the state of implanted specimens. For an attractive Fe-Fe potential the iron implants are observed in the form of aggregates, while for a repulsive Fe-Fe potential, they are not distinguishable in M\"ossbauer spectra. Molecular-dynamics simulations showed that the final arrangement of atoms within a thermal spike is maintained during about 1.2 ps.
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Staněk et al. (1995) studied this question.
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