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Title: 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

Journal Article · · Journal of Radioanalytical and Nuclear Chemistry
 [1];  [2];  [1];  [3];  [2];  [4];  [4];  [5];  [5];  [5];  [5];  [6];  [6];  [7];  [7]
  1. Swedish Defence Research Agency (FOI), Umea (Sweden). CBRN Defence and Security
  2. DAM, DIF, French Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)
  3. Swedish Defence Research Agency (FOI), Umea (Sweden). CBRN Defence and Security ; Chalmers University of Technology, Goteborg (Sweden). Department of Chemistry and Chemical Engineering, Nuclear Chemistr
  4. French Alternative Energies and Atomic Energy Commission (CEA), CEA-Centre de Valduc, Is-Sur-Tille (France)
  5. Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights (Australia)
  6. South Africa Nuclear Energy Corporation (NECSA) Pelindaba, Pretoria (South Africa)
  7. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1424108
Report Number(s):
LLNL-JRNL--679185
Journal Information:
Journal of Radioanalytical and Nuclear Chemistry, Journal Name: Journal of Radioanalytical and Nuclear Chemistry Journal Issue: 2 Vol. 315; ISSN 0236-5731
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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