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Title: Tracking of oxide formation in laser-produced uranium plasmas

Abstract

We use a spatially and temporally resolved emission tracking technique based on optical emission spectroscopy to map the evolution of emission features from uranium and its compounds in a plasma produced by a nanosecond laser. We observe quenching of the emission from neutral uranium (U I 591.538 nm) and uranium monoxide (UO 593.55 nm) species with increasing oxygen concentration and discuss possible reaction pathways for dissociation or formation of higher uranium oxides (UxOy). We further identify spectral features between 320 and 380 nm and between 520 and 640 nm, which we attribute to higher uranium oxides.

Authors:
ORCiD logo; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
OSTI Identifier:
1489336
Report Number(s):
PNNL-SA-136967
Journal ID: ISSN 0146-9592; OPLEDP
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Optics Letters
Additional Journal Information:
Journal Volume: 43; Journal Issue: 20; Journal ID: ISSN 0146-9592
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
(140.3440) Laser-induced breakdown, (280.4788) Optical Sensing, (280.5395) Plasma Diagnostics, (300.2140) Emission Spectroscopy, Laser ablation (LA), LIBS, Molecular formation, U emission

Citation Formats

Skrodzki, P. J., Burger, M., Jovanovic, I., Phillips, M. C., Brumfield, B. E., and Harilal, S. S. Tracking of oxide formation in laser-produced uranium plasmas. United States: N. p., 2018. Web. doi:10.1364/OL.43.005118.
Skrodzki, P. J., Burger, M., Jovanovic, I., Phillips, M. C., Brumfield, B. E., & Harilal, S. S. Tracking of oxide formation in laser-produced uranium plasmas. United States. doi:10.1364/OL.43.005118.
Skrodzki, P. J., Burger, M., Jovanovic, I., Phillips, M. C., Brumfield, B. E., and Harilal, S. S. Mon . "Tracking of oxide formation in laser-produced uranium plasmas". United States. doi:10.1364/OL.43.005118.
@article{osti_1489336,
title = {Tracking of oxide formation in laser-produced uranium plasmas},
author = {Skrodzki, P. J. and Burger, M. and Jovanovic, I. and Phillips, M. C. and Brumfield, B. E. and Harilal, S. S.},
abstractNote = {We use a spatially and temporally resolved emission tracking technique based on optical emission spectroscopy to map the evolution of emission features from uranium and its compounds in a plasma produced by a nanosecond laser. We observe quenching of the emission from neutral uranium (U I 591.538 nm) and uranium monoxide (UO 593.55 nm) species with increasing oxygen concentration and discuss possible reaction pathways for dissociation or formation of higher uranium oxides (UxOy). We further identify spectral features between 320 and 380 nm and between 520 and 640 nm, which we attribute to higher uranium oxides.},
doi = {10.1364/OL.43.005118},
journal = {Optics Letters},
issn = {0146-9592},
number = 20,
volume = 43,
place = {United States},
year = {2018},
month = {1}
}

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