Double-Ionization Satellites in the X-ray Emission Spectrum of Ni Metal

Abstract

We report measurements of the nonresonant x-ray emission spectroscopy (XES) from Ni metal in an energy range spanning the K_beta, valence-to-core, and double-ionization (DI) satellites that appear beyond the single-particle Fermi level. We make special use of a laboratory-based x-ray spectrometer capable of both x-ray emission and x-ray absorption measurements to accurately align the XES and x-ray absorption spectra to a common energy scale. The careful alignment of energy scales is requisite for correction of the strong sample absorption of DI fluorescence above the Ni K-edge energy. The successful correction of absorption effects allows a determination of the branching ratios for the [1s3d], [1s3p], [1s2p] and [1s2s] satellites with respect to their corresponding diagram lines. We compare our results with other work, finding good agreement with prior experiments and with theoretical calculations in the multi-configuration Dirac-Fock framework.

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• The $\alpha$-dependence of transition frequencies for ions Si II, Cr II, Fe II, Ni II, and Zn II
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Cited by in corpus (2)

• An Improved Laboratory-Based XAFS and XES Spectrometer for Analytical Applications in Materials Chemistry Research
• Benchmark Results and Theoretical Treatments for Valence-to-Core X-ray Emission Spectroscopy in Transition Metal Compounds