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High-contrast sub-millivolt inelastic X-ray scattering for nano- and mesoscale science

Author

Listed:
  • Yuri Shvyd’ko

    (Advanced Photon Source, Argonne National Laboratory)

  • Stanislav Stoupin

    (Advanced Photon Source, Argonne National Laboratory)

  • Deming Shu

    (Advanced Photon Source, Argonne National Laboratory)

  • Stephen P. Collins

    (Diamond Light Source Ltd, Didcot)

  • Kiran Mundboth

    (Diamond Light Source Ltd, Didcot)

  • John Sutter

    (Diamond Light Source Ltd, Didcot)

  • Martin Tolkiehn

    (DESY, Notkestrasse 85, 22607 Hamburg, Germany)

Abstract

Photon and neutron inelastic scattering spectrometers are microscopes for imaging condensed matter dynamics on very small length and time scales. Inelastic X-ray scattering permitted the first quantitative studies of picosecond nanoscale dynamics in disordered systems almost 20 years ago. However, the nature of the liquid-glass transition still remains one of the great unsolved problems in condensed matter physics. It calls for studies at hitherto inaccessible time and length scales, and therefore for substantial improvements in the spectral and momentum resolution of the inelastic X-ray scattering spectrometers along with a major enhancement in spectral contrast. Here we report a conceptually new spectrometer featuring a spectral resolution function with steep, almost Gaussian tails, sub-meV (≃620 μeV) bandwidth and improved momentum resolution. The spectrometer opens up uncharted space on the dynamics landscape. New results are presented on the dynamics of liquid glycerol, in the regime that has become accessible with the novel spectrometer.

Suggested Citation

  • Yuri Shvyd’ko & Stanislav Stoupin & Deming Shu & Stephen P. Collins & Kiran Mundboth & John Sutter & Martin Tolkiehn, 2014. "High-contrast sub-millivolt inelastic X-ray scattering for nano- and mesoscale science," Nature Communications, Nature, vol. 5(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5219
    DOI: 10.1038/ncomms5219
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