Electronic Structure Analysis of USiO

Uranium is a member of Actinides and plays important role in nuclear science and technology. Electronic and structural investigations of actinide compounds attract major interest in science. The electronic structure and chemical bonding of coffinite USiO4 are investigated by X-ray Absorption Fine Structure spectroscopy (XAFS). U L3- edge absorption spectrum in USiO4 is compared with U L3-edge spectra in UO2 and UTe due to their different electronic and chemical structures. The study presents XANES (x-ray Absorption Near-Edge Structure) and Extended XAFS (EXAFS) calculations of USiO4 thin films. The full multiple scattering approach has been applied to the calculation of U L3 edge XANES spectra of USiO4, UO2 and UTe, based on different choices of one electron potentials according to Uranium coordinations by using the real space multiple scattering method FEFF 8.2 code. (atomic and molecular physics)