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Understanding and simulating the material behavior during multi-particle irradiations

Abstract : A number of studies have suggested that the irradiation behavior and damage processes occurring during sequential and simultaneous particle irradiations can significantly differ. Currently, there is no definite answer as to why and when such differences are seen. Additionally, the conventional multi-particle irradiation facilities cannot correctly reproduce the complex irradiation scenarios experienced in a number of environments like space and nuclear reactors. Therefore, a better understanding of multi-particle irradiation problems and possible alternatives are needed. This study shows ionization induced thermal spike and defect recovery during sequential and simultaneous ion irradiation of amorphous silica. The simultaneous irradiation scenario is shown to be equivalent to multiple small sequential irradiation scenarios containing latent damage formation and recovery mechanisms. The results highlight the absence of any new damage mechanism and time-space correlation between various damage events during simultaneous irradiation of amorphous silica. This offers a new and convenient way to simulate and understand complex multi-particle irradiation problems.
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https://hal-cea.archives-ouvertes.fr/cea-02418007
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Submitted on : Wednesday, December 18, 2019 - 2:48:38 PM
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Anamul Mir, M. Toulemonde, C. Jegou, S. Miro, Y. Serruys, et al.. Understanding and simulating the material behavior during multi-particle irradiations. Scientific Reports, Nature Publishing Group, In press, 6, pp.30191. ⟨10.1038/srep30191⟩. ⟨cea-02418007⟩

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