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Title: Standoff Detection of Uranium and its Isotopes by Femtosecond Filament Laser Ablation Molecular Isotopic Spectrometry

Abstract

The ability to perform not only elementally but also isotopically sensitive detection and analysis at standoff distances is important for remote sensing applications in diverse ares, such as nuclear nonproliferation, environmental monitoring, geophysics, and planetary science. We demonstrate isotopically sensitive real-time standoff detection of uranium by the use of femtosecond filament-induced laser ablation molecular isotopic spectrometry. A uranium oxide molecular emission isotope shift of 0.05 ± 0.007 nm is reported at 593.6 nm. We implement both spectroscopic and acoustic diagnostics to characterize the properties of uranium plasma generated at different filament- uranium interaction points. The resulting uranium oxide emission exhibits a nearly constant signal-to-background ratio over the length of the filament, unlike the uranium atomic and ionic emission, for which the signal-to-background ratio varies significantly along the filament propagation. This is explained by the different rates of increase of plasma density and uranium oxide density along the filament length resulting from spectral and temporal evolution of the filament along its propagation. Lastly, the results provide a basis for the optimal use of filaments for standoff detection and analysis of uranium isotopes and indicate the potential of the technique for a wider range of remote sensing applications that require isotopic sensitivity.

Authors:
 [1];  [1];  [2]
  1. Pennsylvania State Univ., University Park, PA (United States). Dept of Mechanical and Nuclear Engineering
  2. Pennsylvania State Univ., University Park, PA (United States). Dept of Mechanical and Nuclear Engineering; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Sciences
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); US Department of Homeland Security (DHS)
OSTI Identifier:
1367670
Grant/Contract Number:  
NA0002534; 2012.05 DN-130-NF0001
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Imaging and sensing; Near-infrared spectroscopy; Optical sensors

Citation Formats

Hartig, Kyle C., Ghebregziabher, Isaac, and Jovanovic, Igor. Standoff Detection of Uranium and its Isotopes by Femtosecond Filament Laser Ablation Molecular Isotopic Spectrometry. United States: N. p., 2017. Web. doi:10.1038/srep43852.
Hartig, Kyle C., Ghebregziabher, Isaac, & Jovanovic, Igor. Standoff Detection of Uranium and its Isotopes by Femtosecond Filament Laser Ablation Molecular Isotopic Spectrometry. United States. doi:10.1038/srep43852.
Hartig, Kyle C., Ghebregziabher, Isaac, and Jovanovic, Igor. Wed . "Standoff Detection of Uranium and its Isotopes by Femtosecond Filament Laser Ablation Molecular Isotopic Spectrometry". United States. doi:10.1038/srep43852. https://www.osti.gov/servlets/purl/1367670.
@article{osti_1367670,
title = {Standoff Detection of Uranium and its Isotopes by Femtosecond Filament Laser Ablation Molecular Isotopic Spectrometry},
author = {Hartig, Kyle C. and Ghebregziabher, Isaac and Jovanovic, Igor},
abstractNote = {The ability to perform not only elementally but also isotopically sensitive detection and analysis at standoff distances is important for remote sensing applications in diverse ares, such as nuclear nonproliferation, environmental monitoring, geophysics, and planetary science. We demonstrate isotopically sensitive real-time standoff detection of uranium by the use of femtosecond filament-induced laser ablation molecular isotopic spectrometry. A uranium oxide molecular emission isotope shift of 0.05 ± 0.007 nm is reported at 593.6 nm. We implement both spectroscopic and acoustic diagnostics to characterize the properties of uranium plasma generated at different filament- uranium interaction points. The resulting uranium oxide emission exhibits a nearly constant signal-to-background ratio over the length of the filament, unlike the uranium atomic and ionic emission, for which the signal-to-background ratio varies significantly along the filament propagation. This is explained by the different rates of increase of plasma density and uranium oxide density along the filament length resulting from spectral and temporal evolution of the filament along its propagation. Lastly, the results provide a basis for the optimal use of filaments for standoff detection and analysis of uranium isotopes and indicate the potential of the technique for a wider range of remote sensing applications that require isotopic sensitivity.},
doi = {10.1038/srep43852},
journal = {Scientific Reports},
number = ,
volume = 7,
place = {United States},
year = {2017},
month = {3}
}

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    Works referencing / citing this record:

    Gas Phase Chemical Evolution of Uranium, Aluminum, and Iron Oxides
    journal, July 2018


    Transition of Femtosecond-Filament-Solid Interactions from Single to Multiple Filament Regime
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    Transition of Femtosecond-Filament-Solid Interactions from Single to Multiple Filament Regime
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    Gas Phase Chemical Evolution of Uranium, Aluminum, and Iron Oxides
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