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Translative lens-based full-field coherent X-ray imaging.

Carsten Detlefs1, Mario Alejandro Beltran2, Jean Pierre Guigay1

  • 1European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France.

Journal of Synchrotron Radiation
|December 24, 2019
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Summary

This study introduces a new full-field coherent imaging method for hard X-rays using a Galilean X-ray microscope. The technique enhances spatial resolution beyond conventional limits, offering potential advantages in speed and radiation dose.

Keywords:
coherenceimagingmicroscopy

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Area of Science:

  • Coherent X-ray imaging
  • Microscopy
  • Diffractive imaging

Background:

  • Hard X-ray microscopy faces limitations in spatial resolution.
  • Conventional scanning X-ray ptychography can be time-consuming and dose-intensive.

Purpose of the Study:

  • To develop a full-field coherent imaging approach for hard X-rays.
  • To overcome the spatial resolution limits of objective lenses.
  • To offer an alternative to scanning X-ray ptychography.

Main Methods:

  • Utilized a classical (Galilean) X-ray microscope.
  • Combined multiple low-resolution images acquired at varied transverse lens positions.
  • Employed computational reconstruction techniques.

Main Results:

  • Demonstrated successful high-resolution image reconstruction from simulated phantom data.
  • Overcame the spatial resolution limit imposed by the objective lens's numerical aperture.
  • Showcased the optical principles and reconstruction aspects of the novel method.

Conclusions:

  • The developed full-field coherent imaging approach shows promise for hard X-ray applications.
  • Potential benefits include improved spatial bandwidth and reduced radiation dose rates compared to scanning X-ray ptychography.