Uranium L 3 X-ray absorption edge was measured in various compounds containing
uranium in U 4+, U 5+ and U 6+ oxidation states. The measurements have been carried out
at the Energy Dispersive EXAFS beamline (BL-08) at INDUS-2 synchrotron radiation source
at RRCAT, Indore. Energy shifts of~ 2–3 eV were observed for UL 3 edge in the U-
compounds compared to their value in elemental U. The different chemical shifts observed
for the compounds having the same oxidation state of the cation but different anions or …

… However, in case of the present measurements, since we are only concerned with the
XANES part (X-ray near edge absorption spectra or regions of absorption spectra near the
absorption edge), the goniometer is positioned in such a way that a smaller band of 150 eV
falls on the CCD spreading over its 2000 pixels and hence a much better energy resolution
is obtained in this case … the energy shift with effective charge for compounds having Rare
Earth metal, we have tried to fit the data for the present Uranium compounds with the …