Re-solution of xenon clusters in plutonium dioxide under the collision cascade impact: A molecular dynamics simulation

Dastan D. Seitov, Kirill A. Nekrasov, A. Ya. Kupryazhkin, Sanjeev Kumar Gupta, Abdirash T. Akilbekov

2017

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DOI 10.1063/1.5002915
Data confidence 85 high
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Abstract

The interaction of xenon clusters with the collision cascades in the PuO2 crystals is investigated using the molecular dynamics simulation and the approximation of the pair interaction potentials. The potentials of interaction of Xe atoms with the surrounding particles in the crystal lattice are suggested, that are valid in the range of high collision energies. The cascades created by the recoil 235U ions formed as the plutonium α-decay product are considered, and the influence of such cascades on the structure of the xenon clusters is analyzed. It is shown, that the cascade-cluster interaction leads to release of the xenon atoms from the clusters and their subsequent re-solution in the crystal bulk.