TY - JOUR
T1 - X-ray absorption spectroscopy measured in resonant X-ray scattering mode
T2 - How unnatural is the resolution beyond the natural width?
AU - Velkov, Yasen
AU - Hikosaka, Yasumasa
AU - Shigemasa, Eiji
AU - Gavrilyuk, Sergey
AU - Gel'mukhanov, Faris
N1 - Funding Information:
This work was supported by the Swedish Research Council (VR), by the STINT foundation and by a grant from the Swedish Infrastructure Committee (SNIC) for the project ‘Multiphysics Modeling of Molecular Materials,’ No. SNIC 023/07-18. Y.H. and E.S. thank the Japan Society for Promotion of Science for financial support.
PY - 2008/11/3
Y1 - 2008/11/3
N2 - The aim of this work is to give a clarifying view of the 'super-high resolution' scheme employing X-ray absorption spectroscopy in the resonant scattering mode. If the idea is not applied carefully, unrealistic results, as 'perfect' resolution, can be produced. The background of the problem is that the technique of extracting lifetime-broadening-free spectra assumes a known location of the resonance in the two-dimensional map of X-ray scattering spectra. The accuracy of the latter is, however, related to the lifetime broadening of the core-excited state. Thus, a compromise must be found between the uncertainty in the position of the X-ray absorption peak and the width of the desired absorption profile.
AB - The aim of this work is to give a clarifying view of the 'super-high resolution' scheme employing X-ray absorption spectroscopy in the resonant scattering mode. If the idea is not applied carefully, unrealistic results, as 'perfect' resolution, can be produced. The background of the problem is that the technique of extracting lifetime-broadening-free spectra assumes a known location of the resonance in the two-dimensional map of X-ray scattering spectra. The accuracy of the latter is, however, related to the lifetime broadening of the core-excited state. Thus, a compromise must be found between the uncertainty in the position of the X-ray absorption peak and the width of the desired absorption profile.
UR - http://www.scopus.com/inward/record.url?scp=54049113741&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2008.09.067
DO - 10.1016/j.cplett.2008.09.067
M3 - 学術論文
AN - SCOPUS:54049113741
SN - 0009-2614
VL - 465
SP - 153
EP - 156
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -