Quantitative amplitude and phase contrast imaging in a scanning transmission X-ray microscope

Benjamin Hornberger*, Michael Feser, Chris Jacobsen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Phase contrast in X-ray imaging provides lower radiation dose, and dramatically higher contrast at multi-keV photon energies when compared with absorption contrast. We describe here the use of a segmented detector in a scanning transmission X-ray microscope to collect partially coherent bright field images. We have adapted a Fourier filter reconstruction technique developed by McCallum, Landauer and Rodenburg to retrieve separate, quantitative maps of specimen phase shift and absorption. This is demonstrated in the imaging of a germanium test pattern using 525 eV soft X-rays.

Original languageEnglish (US)
Pages (from-to)644-655
Number of pages12
JournalUltramicroscopy
Volume107
Issue number8
DOIs
StatePublished - Aug 1 2007

Keywords

  • Configured detector
  • Phase contrast
  • Phase recovery
  • Segmented detector
  • X-ray microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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