Raman spectrum of U 4 O 9 : a new interpretation of damage lines in UO 2 | Zendy

Desgranges L. | Zendy; Baldinozzi G. | Zendy; Simon P. | Zendy; Guimbretière G. | Zendy; Canizares A. | Zendy

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Raman spectrum of U 4 O 9 : a new interpretation of damage lines in UO 2

Author(s) -

Desgranges L.,

Baldinozzi G.,

Simon P.,

Guimbretière G.,

Canizares A.

Publication year - 2012

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.3054

Subject(s) - raman spectroscopy , superstructure , uranium , analytical chemistry (journal) , homogeneous , allotropy , chemistry , g band , materials science , crystallography , phase (matter) , phase diagram , physics , optics , thermodynamics , metallurgy , chromatography , organic chemistry

Characterisation of uranium oxides in different conditions is a challenge both in nuclear and environment sciences. We focus here on U 4 O 9 , which is a superstructure of UO 2 . Homogeneous U 4 O 9 powder was fabricated and characterised by Raman spectroscopy. The Raman spectrum of a pure‐phase U 4 O 9 is, for the first time, completely described and interpreted. U 4 O 9 Raman spectrum derives from the well characterised one of UO 2 . Besides reminiscent modes of UO 2 , a band at 630 cm ‐1 , which has a specific response to polarised light, was interpreted as characteristic of clusters of interstitial oxygen atoms. These experimental data will help to rationalise the interpretation of UO 2 damaged samples. Copyright © 2011 John Wiley & Sons, Ltd.

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