Laser-wakefield accelerators for high-resolution X-ray imaging of complex microstructures
- Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of Michigan, Ann Arbor, MI (United States); Lancaster Univ., Bailrigg (United Kingdom); The Cockcroft Inst., Daresbury (United Kingdom)
- Lancaster Univ., Bailrigg (United Kingdom); The Cockcroft Inst., Daresbury (United Kingdom); Imperial College, London (United Kingdom)
- Imperial College, London (United Kingdom)
- Lancaster Univ., Bailrigg (United Kingdom); The Cockcroft Inst., Daresbury (United Kingdom)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab. (RAL)
- Diamond Light Source (United Kingdom)
- Lund Univ. (Sweden)
- Univ. of York (United Kingdom)
- Lancaster Univ., Bailrigg (United Kingdom); The Cockcroft Inst., Daresbury (United Kingdom); Univ. of Strathclyde, Glasgow (United Kingdom)
- Helmholtz-Zentrum Dresden-Rossendorf (Germany); Technische Univ. Dresden (Germany); Academy of Sciences of the Czech Republic (ASCR) (Czech Republic)
- Imperial College, London (United Kingdom); Univ. of Lisbon (Portugal)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- Helmholtz-Zentrum Dresden-Rossendorf (Germany); Academy of Sciences of the Czech Republic (ASCR) (Czech Republic)
Laser-wakefeld accelerators (LWFAs) are high acceleration-gradient plasma-based particle accelerators capable of producing ultra-relativistic electron beams. Within the strong focusing felds of the wakefeld, 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 via 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±0.3μm of the LWFA source in this experiment was measured. These results indicate that betatron X-rays from laser wakefeld acceleration can provide an alternative to conventional synchrotron sources for high resolution imaging of eutectics and, more broadly, complex microstructures.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); Science and Technology Facilities Council (STFC); EuPRAXIA; Laserlab-Europe; Engineering and Physical Sciences Research Council (EPSRC); EuCARD-2; Extreme Light Infrastructure (ELI) European Project; Natural Sciences and Engineering Research Council of Canada (NSERC); Fundação para a Ciência e a Tecnologia (FCT)
- Grant/Contract Number:
- AC52-07NA27344; NA0002372; ST/P002056/1; ST/P000835/1; 653782; 654148; EP/J018171/1; EP/J500094/1; EP/N028694/1; 312453; POCI/FIS/59574/2004
- OSTI ID:
- 1624460
- Alternate ID(s):
- OSTI ID: 1860668
- Report Number(s):
- LLNL-JRNL-742178; LLNL-JRNL-758267; PII: 39845; TRN: US2200105
- Journal Information:
- Scientific Reports, Vol. 9, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Single-shot multi-keV X-ray absorption spectroscopy using an ultrashort laser wakefield accelerator source | text | January 2019 |
Single-Shot Multi-keV X-Ray Absorption Spectroscopy Using an Ultrashort Laser-Wakefield Accelerator Source
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journal | December 2019 |
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