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Publication . Article . 2019

Laser-wakefield accelerators for high-resolution X-ray imaging of complex microstructures

Hussein, A. E.; Senabulya, N.; Ma, Y.; Streeter, M. J. V.; Kettle, B.; Dann, S. J. D.; Albert, F.; +27 Authors
Open Access   English  
Published: 01 Mar 2019 Journal: Scientific Reports, volume 9, issue 1, pages 1-13 (issn: 2045-2322, Copyright policy )
Publisher: Nature Publishing Group
Abstract Laser-wakefield accelerators (LWFAs) are high acceleration-gradient plasma-based particle accelerators capable of producing ultra-relativistic electron beams. Within the strong focusing fields of the wakefield, accelerated electrons undergo betatron oscillations, emitting a bright pulse of X-rays with a micrometer-scale source size that may be used for imaging applications. Non-destructive X-ray phase contrast imaging and tomography of heterogeneous materials can provide insight into their processing, structure, and performance. To demonstrate the imaging capability of X-rays from an LWFA we have examined an irregular eutectic in the aluminum-silicon (Al-Si) system. The lamellar spacing of the Al-Si eutectic microstructure is on the order of a few micrometers, thus requiring high spatial resolution. We present comparisons between the sharpness and spatial resolution in phase contrast images of this eutectic alloy obtained v ia X-ray phase contrast imaging at the Swiss Light Source (SLS) synchrotron and X-ray projection microscopy via an LWFA source. An upper bound on the resolving power of 2.7 ± 0.3 μm of the LWFA source in this experiment was measured. These results indicate that betatron X-rays from laser wakefield acceleration can provide an alternative to conventional synchrotron sources for high resolution imaging of eutectics and, more broadly, complex microstructures.
Subjects by Vocabulary

Library of Congress Subject Headings: lcsh:Medicine lcsh:R lcsh:Science lcsh:Q

Microsoft Academic Graph classification: Synchrotron law.invention law Strong focusing Swiss Light Source Laser Betatron Particle accelerator Image resolution Materials science Phase-contrast imaging Optics business.industry business

arXiv: Physics::Accelerator Physics Astrophysics::High Energy Astrophysical Phenomena


Article, Science & Technology, Multidisciplinary Sciences, Science & Technology - Other Topics, ELECTRON ACCELERATION, GROWTH, PHASE, BEAMS, DATASETS, SYSTEMS, Multidisciplinary, laser-wakefield accelerators, particle accelerators, ultra-relativistic electron beam, X-ray bright pulse, imaging applications

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Funded byView all
The Integrated Initiative of European Laser Research Infrastructures
  • Funder: European Commission (EC)
  • Project Code: 654148
  • Funding stream: H2020 | RIA
Validated by funder
FCT| POCI/FIS/59574/2004
New sub-cycle radiation sources in the visible by relativistic mirror
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: POCI/FIS/59574/2004
  • Funding stream: POCI
Proposal for a Horizon 2020 Design Study on the “European Plasma Research Accelerator with eXcellence In Applications“ (EuPRAXIA)
  • Funder: European Commission (EC)
  • Project Code: 653782
  • Funding stream: H2020 | RIA
UKRI| The John Adams Institute for Accelerator Science - Bridging Grant
  • Funder: UK Research and Innovation (UKRI)
  • Project Code: ST/P000835/1
  • Funding stream: STFC
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Scientific Reports
Article . 2019
Providers: PubMed Central