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All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Multi-contrast diffraction enhanced computed laminography at Beijing Synchrotron Radiation Facility.

Jian Fu1, Xianhong Shi2, Qingxi Yuan3

  • 1Research Center of Digital Radiation Imaging and Biomedical Imaging, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China. fujian706@buaa.edu.cn.

Analytical and Bioanalytical Chemistry
|September 2, 2018
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Summary
This summary is machine-generated.

A new multi-contrast X-ray diffraction enhanced imaging-computed laminography (DEI-CL) system overcomes limitations in imaging large, flat samples. This synchrotron radiation technique provides 3D visualization for advanced materials research.

Keywords:
Computed laminographyDark-field imagingDiffraction enhanced imagingPhase contrast imagingSynchrotron radiation X-ray

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Physics

Background:

  • Synchrotron radiation X-ray computed tomography (CT) is vital for 3D morphological and chemical analysis.
  • Imaging large samples with conventional CT is challenging due to X-ray absorption.
  • X-ray computed laminography (CL) and diffraction-enhanced imaging (DEI) offer solutions for flat and weakly absorbing samples, respectively.

Purpose of the Study:

  • To develop and validate a multi-contrast DEI-CL system for imaging challenging sample geometries.
  • To overcome the limitations of synchrotron radiation CT for specimens with large lateral extensions.
  • To enable advanced 3D imaging of materials like carbon fiber reinforced polymer laminates.

Main Methods:

  • Integration of X-ray computed laminography (CL) and X-ray diffraction enhanced imaging (DEI) principles.
  • Development of a multi-contrast DEI-CL system at the Beijing Synchrotron Radiation Facility's 4W1A beamline.
  • Experimental validation using carbon fiber reinforced polymer laminates with absorption, phase, and dark-field contrasts.

Main Results:

  • Successful design and implementation of the multi-contrast DEI-CL system.
  • Demonstration of the system's validity through preliminary experimental results.
  • Acquisition of high-quality 3D imaging data with multiple contrasts for polymer laminates.

Conclusions:

  • The developed DEI-CL system effectively addresses limitations in imaging large, flat samples using synchrotron radiation.
  • This advancement facilitates broader applications of state-of-the-art synchrotron radiation techniques.
  • The system shows significant potential for cutting-edge research in materials science and beyond.