Comparing results of X-ray diffraction, µ-Raman spectroscopy and neutron diffraction when identifying chemical phases in seized nuclear material, during a comparative nuclear forensics exercise

Stina Holmgren Rondahl; Fabien Pointurier; Linnea Ahlinder; Henrik Ramebäck; Olivier Marie; Brice Ravat; François Delaunay; Emma Young; Ned Blagojevic; James R. Hester; Gordon Thorogood; Aubrey N. Nelwamondo; Tshepo P. Ntsoane; Sarah K. Roberts; Kiel S. Holliday

doi:10.1007/s10967-017-5666-3

Comparing results of X-ray diffraction, µ-Raman spectroscopy and neutron diffraction when identifying chemical phases in seized nuclear material, during a comparative nuclear forensics exercise

Stina Holmgren Rondahl, Fabien Pointurier, Linnea Ahlinder, Henrik Ramebäck, Olivier Marie, Brice Ravat, François Delaunay, Emma Young, Ned Blagojevic, James R. Hester, Gordon Thorogood, Aubrey N. Nelwamondo, Tshepo P. Ntsoane, Sarah K. Roberts, Kiel S. Holliday

Source

Journal of Radioanalytical and Nuclear Chemistry > 2018 > 315 > 2 > 395-408

Abstract

This work presents the results for identification of chemical phases obtained by several laboratories as a part of an international nuclear forensic round-robin exercise. In this work powder X-ray diffraction (p-XRD) is regarded as the reference technique. Neutron diffraction produced a superior high-angle diffraction pattern relative to p-XRD. Requiring only small amounts of sample, µ-Raman spectroscopy was used for the first time in this context as a potentially complementary technique to p-XRD. The chemical phases were identified as pure UO₂ in two materials, and as a mixture of UO₂, U₃O₈ and an intermediate species U₃O₇ in the third material.

Identifiers

journal ISSN :	0236-5731
journal e-ISSN :	1588-2780
DOI	10.1007/s10967-017-5666-3

Authors

Stina Holmgren Rondahl

Swedish Defence Research Agency (FOI), CBRN Defence and Security, Umeå, Sweden

Fabien Pointurier

French Alternative Energies and Atomic Energy Commission (CEA), DAM, DIF, Arpajon, France

Linnea Ahlinder

Swedish Defence Research Agency (FOI), CBRN Defence and Security, Umeå, Sweden

Henrik Ramebäck

Swedish Defence Research Agency (FOI), CBRN Defence and Security, Umeå, Sweden
Chalmers University of Technology, Department of Chemistry and Chemical Engineering, Nuclear Chemistry, Göteborg, Sweden

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Keywords

XRD µ-Raman Spectroscopy Neutron diffraction Phase identification Nuclear forensics Uranium oxide

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Publication languages: English

Data set: Springer

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Springer Netherlands

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Stina Holmgren Rondahl

Fabien Pointurier

Linnea Ahlinder

Henrik Ramebäck

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Comparing results of X-ray diffraction, µ-Raman spectroscopy and neutron diffraction when identifying chemical phases in seized nuclear material, during a comparative nuclear forensics exercise