1s2p resonant inelastic X-ray scattering combined dipole and quadrupole analysis method

Alexander Bagger, Ties Haarman, Anna Puig Molina, Poul George Moses, Hirofumi Ishii, Nozomu Hiraoka, Yu-Han Wu, Ku-Ding Tsuei, Ib Chorkendorff, Frank De Groot

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Abstract

In this study an analysis strategy towards using the resonant inelastic X-ray scattering (RIXS) technique more effectively compared with X-ray absorption spectroscopy (XAS) is presented. In particular, the question of when RIXS brings extra information compared with XAS is addressed. To answer this question the RIXS plane is analysed using two models: (i) an exciton model and (ii) a continuum model. The continuum model describes the dipole pre-edge excitations while the exciton model describes the quadrupole excitations. Applying our approach to the experimental 1s2p RIXS planes of VO2 and TiO2, it is shown that only in the case of quadrupole excitations being present is additional information gained by RIXS compared with XAS. Combining this knowledge with methods to calculate the dipole contribution in XAS measurements gives scientists the opportunity to plan more effective experiments.
Original languageEnglish
JournalJournal of Synchrotron Radiation
Volume24
Issue number1
Pages (from-to)296-301
Number of pages6
ISSN0909-0495
DOIs
Publication statusPublished - 2017

Keywords

  • Resonant inelestic X-ray scattering
  • RIXS
  • X-ray absorption
  • X-ray emission

Cite this

Bagger, A., Haarman, T., Molina, A. P., Moses, P. G., Ishii, H., Hiraoka, N., Wu, Y-H., Tsuei, K-D., Chorkendorff, I., & De Groot, F. (2017). 1s2p resonant inelastic X-ray scattering combined dipole and quadrupole analysis method. Journal of Synchrotron Radiation, 24(1), 296-301. https://doi.org/10.1107/S1600577516016933