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Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
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One-dimensional hard x-ray field retrieval using a moveable structure.

Manuel Guizar-Sicairos1, Kenneth Evans-Lutterodt, Abdel F Isakovic

  • 1The Institute of Optics, University of Rochester, Rochester, New York 14627, USA. manuel.guizar-sicairos@psi.ch

Optics Express
|August 20, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel method for measuring hard x-ray beams using only far-field intensity data. This technique enables more accurate measurement of narrower beams compared to traditional methods.

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Area of Science:

  • Optics and Photonics
  • X-ray Optics
  • Metrology

Background:

  • Accurate characterization of hard x-ray beams is crucial for various applications, including medical imaging and materials science.
  • Traditional methods like knife-edge scans require direct measurement at the focal plane, which can be challenging for narrow beams.

Purpose of the Study:

  • To develop and validate a novel technique for measuring the field of an x-ray line focus.
  • To enable characterization of narrower x-ray beams than previously possible.

Main Methods:

  • Utilizing one-dimensional phase retrieval with transverse translation diversity.
  • Employing far-field intensity measurements exclusively, avoiding direct focal plane measurements.
  • Reconstructing the hard x-ray beam profile focused by a compound kinoform lens.

Main Results:

  • The developed technique successfully recovered the hard x-ray beam profile.
  • Reconstructed beam profiles showed good agreement with independent knife-edge scan measurements.
  • The method demonstrated the capability to measure narrower beams effectively.

Conclusions:

  • The proposed technique offers a non-invasive and accurate method for hard x-ray beam characterization.
  • This approach overcomes limitations of traditional methods, particularly for narrow beam measurements.
  • The technique has potential implications for advancing x-ray optics and metrology.