1s2p resonant inelastic X-ray scattering combined dipole and quadrupole analysis method
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1s2p resonant inelastic X-ray scattering combined dipole and quadrupole analysis method. / Bagger, Alexander; Haarman, Ties; Molina, Anna Puig; Moses, Poul George; Ishii, Hirofumi; Hiraoka, Nozomu; Wu, Yu Han; Tsuei, Ku Ding; Chorkendorff, Ib; De Groot, Frank.
I: Journal of Synchrotron Radiation, Bind 24, Nr. 1, 2017, s. 296-301.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - 1s2p resonant inelastic X-ray scattering combined dipole and quadrupole analysis method
AU - Bagger, Alexander
AU - Haarman, Ties
AU - Molina, Anna Puig
AU - Moses, Poul George
AU - Ishii, Hirofumi
AU - Hiraoka, Nozomu
AU - Wu, Yu Han
AU - Tsuei, Ku Ding
AU - Chorkendorff, Ib
AU - De Groot, Frank
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - resonant inelestic X-ray scattering
KW - RIXS
KW - X-ray absorption
KW - X-ray emission
U2 - 10.1107/S1600577516016933
DO - 10.1107/S1600577516016933
M3 - Journal article
C2 - 28009570
AN - SCOPUS:85007008084
VL - 24
SP - 296
EP - 301
JO - Journal of Synchrotron Radiation
JF - Journal of Synchrotron Radiation
SN - 0909-0495
IS - 1
ER -
ID: 177082176