A data analysis method to rapidly characterize gallium concentration in plutonium matrices using LIBS

Vu, Dung M.; Auxier, II, John David; Judge, Elizabeth J.; Aldrich, Kelly Elise; Gifford, Brendan Joel; Saumon, Didier; Neukirch, Amanda J.; Auxier, Jerrad Phillip; Barefield, James E.; Clegg, Samuel M.; Martinez, Ronald Kenneth; Paulus, Bryan Christopher; Fulks, Lisa K.; Colgan, James Patrick

doi:10.1016/j.sab.2023.106650

A data analysis method to rapidly characterize gallium concentration in plutonium matrices using LIBS

Journal Article · Sat Mar 11 00:00:00 UTC 2023 · Spectrochimica Acta. Part B, Atomic Spectroscopy

DOI:https://doi.org/10.1016/j.sab.2023.106650· OSTI ID:1962783

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Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

The processing of actinide samples is a complex and costly endeavor that requires compositional analysis at various stages. Laser-induced breakdown spectroscopy (LIBS) has been used to analyze actinide-containing samples in many nuclear applications including waste management, fuel processing and forensics. The LIBS spectrum obtained from actinide materials are generally extremely complex, exhibiting many thousands of strong emission lines. This makes it difficult to identify other elements within the sample of interest, given the rich and dominant actinide spectrum. Here, in this article, we describe a recent effort to identify and quantify impurities and alloying constituents in plutonium matrices using a hand-held LIBS instrument that is used to rapidly and efficiently measure an emission spectrum from a material sample. We tabulate the emission line positions and intensities of plutonium. We report the development of machine-learning software that can identify gallium and quantify its concentration in plutonium matrices. This work has the potential to provide a rapid and nearly non-destructive technique that allows more confidence in characterizing the composition of materials that are present within complex actinide associated targets. We describe how our LIBS measurements and data analysis methods have successfully quantified the gallium concentration in a variety of samples.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1962783

Alternate ID(s):: OSTI ID: 1962442

Report Number(s):: LA-UR-22-26079

Journal Information:: Spectrochimica Acta. Part B, Atomic Spectroscopy, Journal Name: Spectrochimica Acta. Part B, Atomic Spectroscopy Vol. 203; ISSN 0584-8547

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
LIBS
actinides
gallium
plutonium

A data analysis method to rapidly characterize gallium concentration in plutonium matrices using LIBS

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