Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation
© 2020, The Author(s). Accelerator-based ion-beam irradiation has been widely used to mimic the effects of neutron radiation damage in nuclear reactors. However, ion radiation is most often monodisperse in the incoming ions’ momentum direction, leading to excessive polarization in defect distributio...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/133233 |
| _version_ | 1811079362062057472 |
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| author | Ren, Cui-Lan Yang, Yang Li, Yong-Gang Huai, Ping Zhu, Zhi-Yuan Li, Ju |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Ren, Cui-Lan Yang, Yang Li, Yong-Gang Huai, Ping Zhu, Zhi-Yuan Li, Ju |
| author_sort | Ren, Cui-Lan |
| collection | MIT |
| description | © 2020, The Author(s). Accelerator-based ion-beam irradiation has been widely used to mimic the effects of neutron radiation damage in nuclear reactors. However, ion radiation is most often monodisperse in the incoming ions’ momentum direction, leading to excessive polarization in defect distribution, while the scattering under neutron irradiation is often more isotropic and has less radiation-induced polarization. Mitigation of the excess-polarization as well as the damage non-uniformity artifact might be crucial for making the simulation of neutron radiation by ion-beam radiation more realistic. In this work, a general radiation polarization theory in treating radiation as external polar stimuli is established to understand the natural material responses in different contexts, and the possibility to correct the defect polarization artifact in ion-beam irradiation. Inspired by Magic Angle Spinning in Nuclear Magnetic Resonance, we present a precise sample spinning strategy to reduce the point-defect imbalance effect in ion-beam irradiation. It can be seen that with optimized surface inclination angle and the axis of sample rotation, the vacancy-interstitial population imbalance, as well as the damage profile non-uniformity in a designated region in the target are both reduced. It is estimated that sample spinning frequency on the order of kHz should be sufficient to scramble the ion momentum monodispersity for commonly taken ion fluxes and dose rates, which is experimentally feasible. |
| first_indexed | 2024-09-23T11:13:49Z |
| format | Article |
| id | mit-1721.1/133233 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:13:49Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1332332023-09-15T18:43:52Z Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation Ren, Cui-Lan Yang, Yang Li, Yong-Gang Huai, Ping Zhu, Zhi-Yuan Li, Ju Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering © 2020, The Author(s). Accelerator-based ion-beam irradiation has been widely used to mimic the effects of neutron radiation damage in nuclear reactors. However, ion radiation is most often monodisperse in the incoming ions’ momentum direction, leading to excessive polarization in defect distribution, while the scattering under neutron irradiation is often more isotropic and has less radiation-induced polarization. Mitigation of the excess-polarization as well as the damage non-uniformity artifact might be crucial for making the simulation of neutron radiation by ion-beam radiation more realistic. In this work, a general radiation polarization theory in treating radiation as external polar stimuli is established to understand the natural material responses in different contexts, and the possibility to correct the defect polarization artifact in ion-beam irradiation. Inspired by Magic Angle Spinning in Nuclear Magnetic Resonance, we present a precise sample spinning strategy to reduce the point-defect imbalance effect in ion-beam irradiation. It can be seen that with optimized surface inclination angle and the axis of sample rotation, the vacancy-interstitial population imbalance, as well as the damage profile non-uniformity in a designated region in the target are both reduced. It is estimated that sample spinning frequency on the order of kHz should be sufficient to scramble the ion momentum monodispersity for commonly taken ion fluxes and dose rates, which is experimentally feasible. 2021-10-27T19:51:39Z 2021-10-27T19:51:39Z 2020 2021-08-12T14:44:14Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133233 en 10.1038/S41524-020-00438-9 npj Computational Materials Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Ren, Cui-Lan Yang, Yang Li, Yong-Gang Huai, Ping Zhu, Zhi-Yuan Li, Ju Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation |
| title | Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation |
| title_full | Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation |
| title_fullStr | Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation |
| title_full_unstemmed | Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation |
| title_short | Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation |
| title_sort | sample spinning to mitigate polarization artifact and interstitial vacancy imbalance in ion beam irradiation |
| url | https://hdl.handle.net/1721.1/133233 |
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