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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 applications.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1367385
Report Number(s):
PNNL-SA-123330
Journal ID: ISSN 2045-2322; DN2001000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
(300.6210) Spectroscopy; atomic; (140.3440) Laser-induced breakdown; (020.3260) Isotope shifts; (300.2530) Fluorescence; laser ablation

Citation Formats

Phillips, Mark C., Brumfield, Brian E., LaHaye, Nicole L., Harilal, Sivanandan S., Hartig, Kyle C., and Jovanovic, Igor. Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes. United States: N. p., 2017. Web. doi:10.1038/s41598-017-03865-9.
Phillips, Mark C., Brumfield, Brian E., LaHaye, Nicole L., Harilal, Sivanandan S., Hartig, Kyle C., & Jovanovic, Igor. Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes. United States. doi:10.1038/s41598-017-03865-9.
Phillips, Mark C., Brumfield, Brian E., LaHaye, Nicole L., Harilal, Sivanandan S., Hartig, Kyle C., and Jovanovic, Igor. Mon . "Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes". United States. doi:10.1038/s41598-017-03865-9.
@article{osti_1367385,
title = {Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes},
author = {Phillips, Mark C. and Brumfield, Brian E. and LaHaye, Nicole L. and Harilal, Sivanandan S. and Hartig, Kyle C. and Jovanovic, Igor},
abstractNote = {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 applications.},
doi = {10.1038/s41598-017-03865-9},
journal = {Scientific Reports},
issn = {2045-2322},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {6}
}

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