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Oxidation of uranium nanoparticles produced via pulsed laser ablation

Published online by Cambridge University Press:  26 February 2011

Tom Trelenberg ,
Stephen C Glade ,
James G Tobin ,
Thomas E Felter  and
Alex V Hamza
Tom Trelenberg
Affiliation:
trelenberg1@llnl.gov, Lawrence Livermore National Lab, 7000 East Avenue, L-356, Livermore, CA, 94550, United States
Stephen C Glade
Affiliation:
sglade@alumni.caltech.edu, Lawrence Livermore National Lab, Materials Science and Technology, United States
James G Tobin
Affiliation:
tobin1@llnl.gov, Lawrence Livermore National Lab, Materials Science and Technology, United States
Thomas E Felter
Affiliation:
felter1@llnl.gov, Lawrence Livermore National Lab, Materials Science and Technology, United States
Alex V Hamza
Affiliation:
hamza1@llnl.gov, Lawrence Livermore National Lab, Materials Science and Technology, United States
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Abstract

An experimental apparatus designed for the synthesis, via pulsed laser deposition, and analysis of metallic nanoparticles and thin films of plutonium and other actinides was tested on depleted uranium samples. Five nanosecond pulses from a Nd:YAG laser produced films of ∼1600 Å thickness that were deposited showing an angular distribution typical of thermal ablation. The films remained contiguous for many months in vacuum but blistered due to induced tensile stresses several days after exposure to air. The films were allowed to oxidize from the residual water vapor within the chamber (2×10-10 Torr base pressure). The oxidation was monitored by in-situ analysis techniques including x-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and scanning tunneling microscopy (STM) and followed Langmuir kinetics.

Keywords

actinidelaser ablationphotoemission
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 893: Symposium JJ – Actinides 2005 – Basic Science, Applications and Technology , 2005 , 0893-JJ09-03
Copyright
Copyright © Materials Research Society 2006

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References

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