Dynamic powder crystallography with synchrotron X-ray sources

J. B. Parise, C. L. Cahill, Y. Lee

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

The increased brightness, tunability, low divergence and low emittance of X-ray beams available at synchrotron X-ray sources facilitate a variety of powder-diffraction experiments not practical using conventional in-house sources. Furthermore, the increased availability of fast position-sensitive detectors, along with implementation of improved software, make possible new classes of experiments. These include time-resolved powder-diffraction of phase transitions, precipitation, recrystallization and ion-exchange reactions. Examples of time-resolved studies that highlight some of these developments include: (1) observations of the phases forming during reaction under controlled hydrothermal conditions (e.g., FeS); (2) full Rietveld structure refinement using time-resolved data to determine the mechanism of ion exchange in zeolites. The advent of area detectors, commonly coupled with focusing optics at synchrotons, will further increase the time resolution at the synchrotron, possibly leading to a data glut. Solutions are available now, and developments in the near term will allow semi-automatic decisions on which datasets to analyze amongst the thousands collected.

Original languageEnglish
Pages (from-to)777-800
Number of pages24
JournalCanadian Mineralogist
Volume38
Issue number4
DOIs
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • Crystallography
  • Diffraction
  • Element partitioning
  • Energy-dispersive diffraction
  • High pressure
  • Ion-exchange reactions
  • Phase diagrams
  • Scattering
  • Synchrotron radiation
  • Time-resolved studies

ASJC Scopus subject areas

  • Geochemistry and Petrology

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