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

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 (235)U and (238)U in natural and highly enriched urani...

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Detalles Bibliográficos
Autores principales: Phillips, Mark C., Brumfield, Brian E., LaHaye, Nicole, Harilal, Sivanandan S., Hartig, Kyle C., Jovanovic, Igor
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476594/
https://www.ncbi.nlm.nih.gov/pubmed/28630409
http://dx.doi.org/10.1038/s41598-017-03865-9
Descripción
Sumario: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 (235)U and (238)U 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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