SUBMISSION

Synchrotron X-ray techniques for nuclear forensics and safeguards particle analysis

Rebecca Coles

Juergen Thieme

Biays Bowerman

Martin Schoonen

Jesse Ward

Andrew Duffin

David Shuh

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Presented at
ACS Spring Meeting 2021

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Abstract

The field of nuclear forensics and safeguards has seen increased importance in recent years. In particular, particle analysis has been an increasingly important component of these fields. In nuclear forensics, a specimen can be analyzed using a number of different techniques to narrow down its possible origin. The development of new, non-destructive analysis tools are an important part of refining this process to yield more accurate results. X-ray probes are a promising non-destructive method of providing additional information about specimens, particularly chemical speciation, which is not typically currently examined. To this end, prior work done using a Scanning Transmission X-ray Microscope (STXM) has shown that soft X-ray Absorption Spectroscopy (XAS) has demonstrated the ability to distinguish between many different uranium species, offering an opportunity to provide important information on a sample's origin. Current efforts are focused on improving a particle identification method by providing additional elemental and chemical information through x-ray fluorescence, as well as improving throughput to analyze particles more quickly.

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