Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling

Date

2017-01-01

Author

Gigax, Jonathan G.
Kim, Hyosim
Aydoğan Güngör, Eda
Garner, Frank A.
Maloy, Stu
Shao, Lin

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Although accelerator-based ion irradiation has been widely accepted to simulate neutron damage, neutron-atypical features need to be carefully investigated. In this study, we have shown that Coulomb force drag by ion beams can introduce significant amounts of carbon, nitrogen, and oxygen into target materials even under ultra-high vacuum conditions. The resulting compositional and microstructural changes dramatically suppress void swelling. By applying a beam-filtering technique, introduction of vacuum contaminants is greatly minimized and the true swelling resistance of the alloys is revealed and matches neutron behavior closely. These findings are a significant step toward developing standardized procedures for emulating neutron damage.

URI

https://hdl.handle.net/11511/69904

Journal

MATERIALS RESEARCH LETTERS

DOI

https://doi.org/10.1080/21663831.2017.1323808

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

J. G. Gigax, H. Kim, E. Aydoğan Güngör, F. A. Garner, S. Maloy, and L. Shao, “Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling,” MATERIALS RESEARCH LETTERS, pp. 478–485, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/69904.