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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:43 |
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Conference: Bucharest University Faculty of Physics 2016 Meeting
Section: Atomic and Molecular Physics. Astrophysics. Applied Nuclear Physics
Title:
External Beam PIXE Analysis of Nuclear Fuel Cycle Uranium Samples: Importance for Nuclear Forensics
Authors:
Andrei APOSTOL (1,2), Mihai STRATICIUC (1), Ana PANTELICA (1), Nicolae MARGINEAN (1), Octavian SIMA (2)
Affiliation:
1) Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului St., 077125 Magurele, jud. Ilfov, POB MG-6, Romania
2) University of Bucharest, Faculty of Physics, 405 Atomistilor St., 077125 Magurele, jud. Ilfov, POB MG-11, Romania
E-mail
andrei.apostol@nipne.ro
Keywords:
Nuclear Forensics, Elemental Signatures, Uranium, PIXE
Abstract:
Particles Induced X-ray Emission (PIXE) non-destructive analytical technique was applied to investigate elemental signatures in nuclear fuel cycle uranium samples of different enrichments and origins. The samples were irradiated with 3 MeV protons at the 3 MV Tandetron charged particles accelerator of IFIN-HH. Geometrical characteristics of the analysed samples were not suitable for the sample holder installed in the Ion Beam Analysis (IBA) vacuum chamber; therefore, an external beam set-up was employed. The X-rays were registered using Si-PIN detector, while GUPIX software was used for the analysis of the obtained spectra. The concentrations of minor and trace elements (chemical impurities) present in the studied samples proved to be of the high interest for nuclear forensic investigations. Combining this information with previously obtained by gamma spectrometry data (isotopic composition, age, neutron irradiation traces), it could be possible to determine the nuclear material’s origin, the illegal path and the point of loss of last authorised control.
References:
[1] Development and validation of a method for origin determination of uranium-bearing material, PhD thesis, Jolanta vedkauskait!-Le Gore, JRC, itu, Karlsruhe, Germany (2008)
[2] Proceedings of an international conference on advances in destructive and non-destructive analysis for environmental monitoring and nuclear forensics, IAEA, JRC itu, Karlsruhe, 21–23 October 2002
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