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DOE OSTI · 2480199

The Energetics of He Bubble Nucleation

Winter, Ian·Zhou, Xiaowang·Rothchild, Eric Wilson·Chandross, Michael E.
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Abstract

In this project we considered the initial stages of helium bubble nucleation via the proposed mechanism of self-interstitial atom nucleation. By calculating the energy barrier to self-interstitial atom nucleation in a range of Fe-Ni-Cr alloys we identified the most important energetic contributions to the phenomenon: the Frenkel-pair energy barrier in the absence of helium and the difference of insertion energy for a He cluster into a perfect lattice and vacancy. From this observation, we developed a simple model of helium-assisted self-interstitial atom nucleation.

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36 MATERIALS SCIENCE37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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Winter, Ian, Zhou, Xiaowang, Rothchild, Eric Wilson, Chandross, Michael E.. 2024-10-01. The Energetics of He Bubble Nucleation. https://doi.org/10.2172/2480199

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