Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation

Abstract 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 s...

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Autores principales:	Cui-Lan Ren, Yang Yang, Yong-Gang Li, Ping Huai, Zhi-Yuan Zhu, Ju Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/b5ded135c8c0459caccab69d8b8f421c
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spelling	oai:doaj.org-article:b5ded135c8c0459caccab69d8b8f421c2021-12-02T15:11:19ZSample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation10.1038/s41524-020-00438-92057-3960https://doaj.org/article/b5ded135c8c0459caccab69d8b8f421c2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41524-020-00438-9https://doaj.org/toc/2057-3960Abstract 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.Cui-Lan RenYang YangYong-Gang LiPing HuaiZhi-Yuan ZhuJu LiNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 6, Iss 1, Pp 1-11 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Cui-Lan Ren Yang Yang Yong-Gang Li Ping Huai Zhi-Yuan Zhu Ju Li Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation
description	Abstract 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.
format	article
author	Cui-Lan Ren Yang Yang Yong-Gang Li Ping Huai Zhi-Yuan Zhu Ju Li
author_facet	Cui-Lan Ren Yang Yang Yong-Gang Li Ping Huai Zhi-Yuan Zhu Ju Li
author_sort	Cui-Lan Ren
title	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_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_sort	sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/b5ded135c8c0459caccab69d8b8f421c
work_keys_str_mv	AT cuilanren samplespinningtomitigatepolarizationartifactandinterstitialvacancyimbalanceinionbeamirradiation AT yangyang samplespinningtomitigatepolarizationartifactandinterstitialvacancyimbalanceinionbeamirradiation AT yonggangli samplespinningtomitigatepolarizationartifactandinterstitialvacancyimbalanceinionbeamirradiation AT pinghuai samplespinningtomitigatepolarizationartifactandinterstitialvacancyimbalanceinionbeamirradiation AT zhiyuanzhu samplespinningtomitigatepolarizationartifactandinterstitialvacancyimbalanceinionbeamirradiation AT juli samplespinningtomitigatepolarizationartifactandinterstitialvacancyimbalanceinionbeamirradiation
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Sample spinning to mitigate polarization artifact and interstitial-vacancy imbalance in ion-beam irradiation

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