Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

Mark C. Phillips; Brian E. Brumfield; Nicole Lahaye; Sivanandan S. Harilal; Kyle C. Hartig; Igor Jovanovic

doi:10.1038/s41598-017-03865-9

Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

Mark C. Phillips, Brian E. Brumfield, Nicole Lahaye, Sivanandan S. Harilal, Kyle C. Hartig, Igor Jovanovic

Research output: Contribution to journal › Article › peer-review

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Abstract

We demonstrate measurement of uranium isotopes in femtosecond laser ablation plumes using two-dimensional fluorescence spectroscopy (2DFS). The high-resolution, tunable CW-laser spectroscopy technique clearly distinguishes atomic absorption from ²³⁵U and ²³⁸U in natural and highly enriched uranium metal samples. We present analysis of spectral resolution and analytical performance of 2DFS as a function of ambient pressure. Simultaneous measurement using time-resolved absorption spectroscopy provides information on temporal dynamics of the laser ablation plume and saturation behavior of fluorescence signals. The rapid, non-contact measurement is promising for in-field, standoff measurements of uranium enrichment for nuclear safety and security.

Original language	English (US)
Article number	3784
Journal	Scientific reports
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41598-017-03865-9
State	Published - Dec 1 2017
Externally published	Yes

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title = "Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes",

abstract = "We demonstrate measurement of uranium isotopes in femtosecond laser ablation plumes using two-dimensional fluorescence spectroscopy (2DFS). The high-resolution, tunable CW-laser spectroscopy technique clearly distinguishes atomic absorption from 235U and 238U in natural and highly enriched uranium metal samples. We present analysis of spectral resolution and analytical performance of 2DFS as a function of ambient pressure. Simultaneous measurement using time-resolved absorption spectroscopy provides information on temporal dynamics of the laser ablation plume and saturation behavior of fluorescence signals. The rapid, non-contact measurement is promising for in-field, standoff measurements of uranium enrichment for nuclear safety and security.",

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AU - Brumfield, Brian E.

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AU - Harilal, Sivanandan S.

AU - Hartig, Kyle C.

AU - Jovanovic, Igor

PY - 2017/12/1

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N2 - We demonstrate measurement of uranium isotopes in femtosecond laser ablation plumes using two-dimensional fluorescence spectroscopy (2DFS). The high-resolution, tunable CW-laser spectroscopy technique clearly distinguishes atomic absorption from 235U and 238U in natural and highly enriched uranium metal samples. We present analysis of spectral resolution and analytical performance of 2DFS as a function of ambient pressure. Simultaneous measurement using time-resolved absorption spectroscopy provides information on temporal dynamics of the laser ablation plume and saturation behavior of fluorescence signals. The rapid, non-contact measurement is promising for in-field, standoff measurements of uranium enrichment for nuclear safety and security.

AB - We demonstrate measurement of uranium isotopes in femtosecond laser ablation plumes using two-dimensional fluorescence spectroscopy (2DFS). The high-resolution, tunable CW-laser spectroscopy technique clearly distinguishes atomic absorption from 235U and 238U in natural and highly enriched uranium metal samples. We present analysis of spectral resolution and analytical performance of 2DFS as a function of ambient pressure. Simultaneous measurement using time-resolved absorption spectroscopy provides information on temporal dynamics of the laser ablation plume and saturation behavior of fluorescence signals. The rapid, non-contact measurement is promising for in-field, standoff measurements of uranium enrichment for nuclear safety and security.

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Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

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