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Updated: Feb 6, 2026
11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
15.5K
Elucidating uranium monoxide spectral features from a laser-produced plasma.
Optics Express
|August 19, 2018
Summary
This study reveals new uranium oxide (UO) emission bands in visible light from laser-produced uranium plasmas. These findings expand our understanding of uranium oxidation in high-temperature environments.
Area of Science:
- Plasma Physics
- Materials Science
- Spectroscopy
Background:
- Uranium (U) readily oxidizes due to its pyrophoricity in high-temperature, oxygen-rich environments.
- Previous identification of uranium oxide (UO) emission was limited to a single spectral feature at 593.55 nm.
Purpose of the Study:
- To comprehensively identify uranium oxide (UO) emission features within the visible spectrum.
- To investigate UO emission from uranium plasmas under varying oxygen concentrations.
Main Methods:
- Generation of uranium plasmas using nanosecond laser pulses on a uranium metal target.
- Controlled ambient environment with varying oxygen concentrations.
- Space- and time-resolved optical emission spectroscopy for detailed analysis.
Main Results:
- Observed strong background-like emission accompanying UO bands, even with trace oxygen.
- Partially resolved bands from uranium monoxide and higher uranium oxides were detected.
- Reported several new UO spectral emission bands in the visible region.
Conclusions:
- The study successfully elucidated UO emission features in the visible spectral regime.
- Identified previously unreported UO emission bands, enhancing the spectral database for uranium plasmas.
- Demonstrated the presence of UO and higher oxides even at low oxygen levels.
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