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AIP Conf. Proc. / Volume 882 / Issue 1

Measurement of the Full XAFS Spectrum of MgO Using Nonresonant Inelastic X-ray Scattering

AIP Conf. Proc. -- February 2, 2007 -- Volume 882, pp. 156-158
X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference; doi:10.1063/1.2644460

Issue Date: 2 February 2007

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ABSTRACT

T. T. Fister,¹ G. T. Seidler,¹ J. O. Cross,² J. J. Rehr,¹ and J. A. Soininen³
¹University of Washington, Seattle, Washington 98105
²Argonne National Laboratory, Argonne, IL 60439
³Division of X-ray Physics, Department of Physical Sciences, University of Helsinki, FIN-00014 Finland

Wepresent non-resonant inelastic x-ray scattering measurements (NRIXS) of the contributionof each initial state orbital in MgO to the dynamicstructure factor. We find good agreement with previous x-ray absorptionfine structure (XAFS) measurements and with previous electron energy lossspectroscopy (EELS) measurements for the corresponding edges. We also findgood agreement with ab initio calculations when the interaction betweenthe core hole and the photoelectron is treated properly. Thesemeasurements demonstrates the flexibility of a new user facility dedicatedto measurement of NRIXS from core-shell electrons, the lower energyresolution inelastic x-ray scattering (LERIX) spectrometer located at sector 20PNC-XOR of the Advanced Photon Source. The LERIX user facilityprovides a bulk-sensitive alternative to, and in some cases extensionof, soft x-ray XAFS measurements. ©2007 American Institute of Physics

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