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Title: ELUCIDATING URANIUM MONOXIDE SPECTRAL FEATURES FROM A LASER-PRODUCED PLASMA

Abstract

Uranium, because of its pyrophoricity, oxidizes rapidly in an oxygen-containing high-temperature environment. However, so far, the identification of UO emission from a laser-produced plasma system is limited to a spectral feature around 593.55 nm. The aim of this study is to elucidate UO emission features in the visible spectral regime from uranium plasmas generated in an oxygen-containing ambient environment. The plasmas are produced by focusing nanosecond laser pulses on a uranium metal target in a controlled ambient environment. Space- and time-resolved optical emission spectroscopic investigations are used for isolating U molecular emission structures from crowded U atomic line emission. Our studies highlight that the emission from a U plasma even in the presence of trace oxygen is accompanied by a strong background-like emission with partially resolved bands from uranium monoxide and higher oxides. We also report several UO spectral emission bands in the visible spectral region.

Authors:
ORCiD logo [1];  [1];  [2];  [1]
  1. BATTELLE (PACIFIC NW LAB)
  2. University of Illinois at Urbana-Champaign
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1542064
Report Number(s):
PNNL-SA-135059
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 26; Journal Issue: 16
Country of Publication:
United States
Language:
English
Subject:
(300.2140) Emission Spectroscopy, (280.5395) Plasma Diagnostics, (140.3440) Laser-induced breakdown, (280.4788) Optical Sensing, Laser ablation, Laser-produced plasma

Citation Formats

Harilal, Sivanandan S., Brumfield, Brian E., Glumac, Nick, and Phillips, Mark C. ELUCIDATING URANIUM MONOXIDE SPECTRAL FEATURES FROM A LASER-PRODUCED PLASMA. United States: N. p., 2018. Web. doi:10.1364/OE.26.020319.
Harilal, Sivanandan S., Brumfield, Brian E., Glumac, Nick, & Phillips, Mark C. ELUCIDATING URANIUM MONOXIDE SPECTRAL FEATURES FROM A LASER-PRODUCED PLASMA. United States. doi:10.1364/OE.26.020319.
Harilal, Sivanandan S., Brumfield, Brian E., Glumac, Nick, and Phillips, Mark C. Wed . "ELUCIDATING URANIUM MONOXIDE SPECTRAL FEATURES FROM A LASER-PRODUCED PLASMA". United States. doi:10.1364/OE.26.020319.
@article{osti_1542064,
title = {ELUCIDATING URANIUM MONOXIDE SPECTRAL FEATURES FROM A LASER-PRODUCED PLASMA},
author = {Harilal, Sivanandan S. and Brumfield, Brian E. and Glumac, Nick and Phillips, Mark C.},
abstractNote = {Uranium, because of its pyrophoricity, oxidizes rapidly in an oxygen-containing high-temperature environment. However, so far, the identification of UO emission from a laser-produced plasma system is limited to a spectral feature around 593.55 nm. The aim of this study is to elucidate UO emission features in the visible spectral regime from uranium plasmas generated in an oxygen-containing ambient environment. The plasmas are produced by focusing nanosecond laser pulses on a uranium metal target in a controlled ambient environment. Space- and time-resolved optical emission spectroscopic investigations are used for isolating U molecular emission structures from crowded U atomic line emission. Our studies highlight that the emission from a U plasma even in the presence of trace oxygen is accompanied by a strong background-like emission with partially resolved bands from uranium monoxide and higher oxides. We also report several UO spectral emission bands in the visible spectral region.},
doi = {10.1364/OE.26.020319},
journal = {Optics Express},
number = 16,
volume = 26,
place = {United States},
year = {2018},
month = {8}
}

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