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Nuclear forensic analysis of a non-traditional actinide sample.

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Summary

This study investigates neptunium (Np) oxide signatures using nuclear forensics. Identifying Np origins and production methods enhances nuclear security and interdiction capabilities.

Keywords:
ChronometryNeptunium oxideNpNuclear forensics

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Area of Science:

  • Nuclear forensics
  • Radiochemistry
  • Nuclear security

Background:

  • Nuclear forensic research often focuses on plutonium (Pu) and uranium (U), neglecting other materials like neptunium (Np).
  • Neptunium (Np) presents a significant nuclear security risk, particularly concerning illicit trafficking of materials from fuel reprocessing.
  • Interdicted neptunium (Np) samples raise concerns about their origin and intended use.

Purpose of the Study:

  • To investigate potential signatures of an unknown neptunium (Np) oxide sample.
  • To apply complementary forensic methods for detailed material characterization.
  • To hypothesize the original intended use, production method, and origin of the Np oxide sample.

Main Methods:

  • Utilized complementary nuclear forensic techniques.
  • Performed detailed measurements on an interdicted Np oxide sample.
  • Assessed measurement results against established Np processing data.

Main Results:

  • Identified unique signatures within the Np oxide sample.
  • Characterized isotopic and chemical properties.
  • Provided data for comparison with known Np production and processing pathways.

Conclusions:

  • Established a methodology for nuclear forensic analysis of Np materials.
  • Demonstrated the feasibility of determining the origin and intended use of Np oxide.
  • Highlighted the importance of including Np in nuclear security and nonproliferation strategies.