Quantitative Analysis of Fission-Product Surrogates in Molten Salt Chloride Aerosols

LeCroy, Garrett S.; Austin, Rachelle M.; Gakhar, Ruchi; Williams, Ammon N.

doi:10.3390/photonics13010093

Quantitative Analysis of Fission-Product Surrogates in Molten Salt Chloride Aerosols

Journal Article · Tue Jan 20 00:00:00 EST 2026 · Photonics

DOI:https://doi.org/10.3390/photonics13010093· OSTI ID:3020303

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Idaho National Laboratory (INL), Idaho Falls, ID (United States)

This work demonstrates laser-induced breakdown spectroscopy (LIBS) applied to a stream of aerosolized salt from molten eutectic LiCl-KCl. We demonstrate analytical capabilities to track fission-product surrogates of Cs, Sr, Pr, and Nd simultaneously, with application to monitor salts in pyroprocessing schemes and molten salt reactors. This work demonstrates limits of detection using LIBS on the order of 100 μg/g, which proves potentially applicable to monitoring fission-product concentrations in pyroprocessing applications. Additionally, this work explores fundamental aspects of plasma temperature and plasma electron density of the aerosolized species during LIBS with a specific focus on potential non-uniform plasma conditions in the aerosol.

View Accepted Manuscript (DOE)

Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC07-05ID14517

OSTI ID:: 3020303

Report Number(s):: INL/JOU--25-89156

Journal Information:: Photonics, Journal Name: Photonics Journal Issue: 1 Vol. 13; ISSN 2304-6732

Publisher:: MDPICopyright Statement

Country of Publication:: United States

Language:: English

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Quantitative Analysis of Fission-Product Surrogates in Molten Salt Chloride Aerosols

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