Cascade fragmentation : deviation from power law in primary radiation damage

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http://hdl.handle.net/10138/211418

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Sand , A E , Mason , D R , De Backer , A , Yi , X , Dudarev , S L & Nordlund , K 2017 , ' Cascade fragmentation : deviation from power law in primary radiation damage ' , Materials Research Letters , vol. 5 , no. 5 , pp. 357-363 . https://doi.org/10.1080/21663831.2017.1294117

Title: Cascade fragmentation : deviation from power law in primary radiation damage
Author: Sand, A. E.; Mason, D. R.; De Backer, A.; Yi, X.; Dudarev, S. L.; Nordlund, K.
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2017
Language: eng
Number of pages: 7
Belongs to series: Materials Research Letters
ISSN: 2166-3831
URI: http://hdl.handle.net/10138/211418
Abstract: The sizes of defect clusters, produced in materials by energetic ion or neutron impacts, are critically important input for models describing microstructural evolution of irradiated materials. We propose a model for the distribution of sizes of vacancy and self-interstitial defect clusters formed by high-energy impacts in tungsten, and provide new data from in situ ion irradiation experiments to validate the model. The model predicts the statistics of sub-cascade splitting and the resulting distribution of primary defects extending over the entire range of cluster sizes, and is able to provide initial conditions for quantitative multi-scale simulations of microstructural evolution. [GRAPHICS] .
Subject: Atomistic simulations
lattice defects
tungsten
radiation damage
DISPLACEMENT CASCADES
COLLISION CASCADES
COMPUTER-SIMULATION
DISLOCATION LOOPS
TUNGSTEN
METALS
DEFECTS
114 Physical sciences
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