Abstract:The response of MgO periclase to irradiation is investigated by means of molecular dynamics simulations, mimicking irradiation by Frenkel pairs accumulation. Both the calculated lattice and volume swellings, which refer, respectively, to the lattice and total volume changes reproduce well the experimental measures. The two diverge at around 0.2 dpa, above which lattice and volume swellings follow separate trends. Below this value, dislocation loops nucleate from point defects clusters, built up by progressive … Show more
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