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 journalArticlepeer-review

41 Scopus citations

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 languageEnglish (US)
Article number3784
JournalScientific reports
Volume7
Issue number1
DOIs
StatePublished - Dec 1 2017
Externally publishedYes

ASJC Scopus subject areas

  • General

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