Universität zu Köln

Lander, G. H., Sundermann, M., Springell, R., Walters, A. C., Nag, A., Garcia-Fernandez, M., Zhou, K. J., van der Laan, G. and Caciuffo, R. (2021). Resonant inelastic x-ray spectroscopy on UO2 as a test case for actinide materials. J. Phys.-Condes. Matter, 33 (6). BRISTOL: IOP PUBLISHING LTD. ISSN 1361-648X

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Abstract

Resonant inelastic x-ray spectroscopy at the uranium N-4 absorption edge at 778 eV has been used to reveal the excitations in UO2 up to 1 eV. The earlier (1989) studies by neutron inelastic scattering of the crystal-field states within the H-3(4) multiplet are confirmed. In addition, the first excited state of the F-3(2) multiplet at similar to 520 meV has been established, and there is a weak signal corresponding to the next excited state at similar to 920 meV. This represents a successful application of soft x-ray spectroscopy to an actinide sample, and resolves an open question in UO2 that has been discussed for 50 years. The technique is described and important caveats are drawn about possible future applications.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lander, G. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sundermann, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Springell, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Walters, A. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nag, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Garcia-Fernandez, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhou, K. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED van der Laan, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Caciuffo, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-588368
DOI:	10.1088/1361-648X/abc4d2
Journal or Publication Title:	J. Phys.-Condes. Matter
Volume:	33
Number:	6
Date:	2021
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1361-648X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTERMULTIPLET TRANSITIONS; MAGNETIC EXCITATIONS; FIELD; SCATTERING; SPECTRA; STATES Multiple languages Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58836