Phys. Rev. B 92, 035111 (2015) - Oxidation and crystal field effects in uranium

Oxidation and crystal field effects in uranium

J. G. Tobin, S.-W. Yu, C. H. Booth, T. Tyliszczak, D. K. Shuh, G. van der Laan, D. Sokaras, D. Nordlund, T.-C. Weng, and P. S. Bagus

Phys. Rev. B 92, 035111 – Published 6 July 2015

Abstract

An extensive investigation of oxidation in uranium has been pursued. This includes the utilization of soft x-ray absorption spectroscopy, hard x-ray absorption near-edge structure, resonant (hard) x-ray emission spectroscopy, cluster calculations, and a branching ratio analysis founded on atomic theory. The samples utilized were uranium dioxide $(U O_{2})$ , uranium trioxide $(U O_{3})$ , and uranium tetrafluoride $(U F_{4})$ . A discussion of the role of nonspherical perturbations, i.e., crystal or ligand field effects, will be presented.

Received 23 March 2015

DOI:https://doi.org/10.1103/PhysRevB.92.035111

©2015 American Physical Society

Authors & Affiliations

J. G. Tobin^* and S.-W. Yu

Lawrence Livermore National Laboratory, Livermore, California 94550, USA

C. H. Booth, T. Tyliszczak, and D. K. Shuh

Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

G. van der Laan

Magnetic Spectroscopy Group, Diamond Light Source, Didcot, UK

D. Sokaras, D. Nordlund, and T.-C. Weng

Stanford Synchrotron Radiation Lightsource, Stanford, California 94025, USA

Department of Chemistry, University of North Texas, Denton, Texas 76203, USA

^*Corresponding author: tobin1@llnl.gov

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Issue

Vol. 92, Iss. 3 — 15 July 2015

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