Journal of Synchrotron Radiation (May 2023)

A new satellite of manganese revealed by extended-range high-energy-resolution fluorescence detection

  • Nicholas T. T. Tran,
  • Daniel Sier,
  • Tony Kirk,
  • Chanh Q. Tran,
  • J. Frederick W. Mosselmans,
  • Sofia Diaz-Moreno,
  • Christopher T. Chantler

DOI
https://doi.org/10.1107/S1600577523002539
Journal volume & issue
Vol. 30, no. 3
pp. 605 – 612

Abstract

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The discovery of a new physical process in manganese metal is reported. This process will also be present for all manganese-containing materials in condensed matter. The process was discovered by applying our new technique of XR-HERFD (extended-range high-energy-resolution fluorescence detection), which was developed from the popular high-resolution RIXS (resonant inelastic X-ray scattering) and HERFD approaches. The acquired data are accurate to many hundreds of standard deviations beyond what is regarded as the criterion for `discovery'. Identification and characterization of many-body processes can shed light on the X-ray absorption fine-structure spectra and inform the scientist on how to interpret them, hence leading to the ability to measure the dynamical nanostructures which are observable using the XR-HERFD method. Although the many-body reduction factor has been used universally in X-ray absorption spectroscopy in analysis over the past 30 years (thousands of papers per year), this experimental result proves that many-body effects are not representable by any constant reduction factor parameter. This paradigm change will provide the foundation for many future studies and X-ray spectroscopy.

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