title: Chemical effects in high-resolution nickel Kalpha X-ray fluorescence spectra.
abstract: The nickel Kalpha spectra of oxides, halides (NiF2, K2NiF6, NiCl2, NiBr2), complex compounds, and metal are measured with two different double-crystal X-ray fluorescence spectrometers. The peak shifts and line width changes due to the changes in the chemical states are reported. High reproducibility has been shown for the chemical shift and line width measurements. The DV-Xalpha molecular orbital calculation at the ground and the 1s(-1) hole states was performed to prove that the chemical effect originats from the charge-transfer mechanism.
authors.affiliation: Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Kawai
authors.forename: Michiharu
authors.initials: M
authors.lastname: Ohta
authors.forename: Tokuzo
authors.initials: T
authors.lastname: Konishi