Title: Resonant X-Ray Emission Spectroscopy at the L3 Edge of Americium up to 23 GPa
Authors: HEATHMAN StephenRUEFF J.p.SIMONELLI L.DENECKE M. A.GRIVEAU Jean-ChristopheCACIUFFO RobertoLANDER G.h
Citation: PHYSICAL REVIEW B vol. 82 no. 20 p. 201103 (1-4)
Publisher: AMER PHYSICAL SOC
Publication Year: 2010
JRC Publication N°: JRC61159
ISSN: 1098-0121
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC61159
DOI: 10.1103/PhysRevB.82.201103
Type: Articles in Journals
Abstract: Resonant X-ray emission spectroscopy and X-ray absorption near-edge structure experiments have been performed on Am metal at the L3 edge as a function of pressure. The hypothesis that the Am valence change at high pressure is associated with a mixing of a 5f state with the 6d valence band is not substantiated by the experiments. Neither the measured RXES nor XANES exhibit additional features expected for mixed-valence. Only a small shift ¿ +2 eV of the L3 edge energy position and a decrease in white line intensity at high pressure is observed. The experimental results at higher pressure may be reproduced by increasing the 6d bandwidth and occupation, and increasing the 5f bandwidth without any change in occupation. Further progress should be directed towards experiments at the Am M edges to observe directly the 5f states.
JRC Institute:Institute for Transuranium Elements

Files in This Item:
There are no files associated with this item.


Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.