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Published on: June 21, 2015
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Tracking of oxide formation in laser-produced uranium plasmas
Optics Letters
|October 16, 2018
Summary
Investigating uranium plasma, this study reveals that higher oxygen levels quench uranium and uranium monoxide emissions. New spectral features indicate the formation of higher uranium oxides (UxOy).
Area of Science:
- Plasma Physics
- Spectroscopy
- Materials Science
Background:
- Understanding uranium behavior in plasma is crucial for applications like nuclear energy and waste management.
- Laser-induced breakdown spectroscopy (LIBS) is a powerful tool for elemental analysis.
Purpose of the Study:
- To spatially and temporally map emission features of uranium and its compounds in laser-produced plasma.
- To investigate the effect of oxygen concentration on uranium emission.
- To identify spectral signatures of higher uranium oxides (UxOy).
Main Methods:
- Utilized a spatially and temporally resolved emission tracking technique.
- Employed optical emission spectroscopy (OES).
- Generated plasma using a nanosecond laser interacting with uranium.
Main Results:
- Observed quenching of neutral uranium (591.538 nm) and uranium monoxide (593.55 nm) emission with increasing oxygen concentration.
- Identified new spectral features between 320-380 nm and 520-640 nm.
- Attributed these new features to the formation of higher uranium oxides (UxOy).
Conclusions:
- Oxygen plays a significant role in the chemical state of uranium in laser-produced plasma.
- The identified spectral features provide evidence for UxOy formation pathways.
- This research contributes to a better understanding of uranium oxidation processes in plasmas.
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