Self-Irradiation Cascade Simulations in Plutonium Metal: Model Behavior at High Energy |
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Authors: | S M Valone and M I Baskes |
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Affiliation: | (1) Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA |
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Abstract: | The Modified Embedded Atom Method model for Pu metal is revised so that it more accurately captures the behavior of the Ziegler-Biersack-Littmark
model of ion-ion interactions. Two revision are tested with somewhat different stiffnesses in the 2-1000 eV range. The revised
models show higher damage levels at 20 KeV than an earlier model, suggesting that the behavior of the models above 100 eV
is dominating damage production, at least in the earlier stages of the cascade.
Work was performed at Los Alamos National Laboratory under the auspices of the US Department of Energy, under contract DE-AC52-06NA25396. |
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Keywords: | Radiation damage Modified embedded atom method Molecular dynamics Cascade simulations Plutonium |
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