Formation of 238U16O and 238U18O observed by time-resolved emission spectroscopy subsequent to laser ablation
Abstract
We have measured vibronic emission spectra of an oxide of uranium formed after laser ablation of the metal in gaseous oxygen. Specifically, we have measured the time-dependent relative intensity of a band located at approximately 593.6 nm in 16O2. This band grew in intensity relative to neighboring atomic features as a function time in an oxygen environment but was relatively invariant with time in argon. In addition, we have measured the spectral shift of this band in an 18O2 atmosphere. Based on this shift, and by comparison with earlier results obtained from free-jet expansion and laser excitation, we can confirm that the oxide in question is UO, consistent with recent reports based on laser ablation in 16O2 only.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 17, 2017
- Source ID
- 10.1063/1.4991824
Entities
People
- Batıkan Köroğlu
- Brett H. Isselhardt
- David G Weisz
- Davide Curreli
- Harry B. Radousky
- Jonathan C. Crowhurst
- Joseph M Zaug
- Magdi Azer
- Michael R Savina
- Michael R. Armstrong
- Mikhail Finko
- Timothy P. Rose
- Wigbert J. Siekhaus
Organizations
- Lawrence Livermore National Laboratory
- United States Department of Defense
- United States Department of Energy
- United States Department of Homeland Security
- University of Illinois Urbana–Champaign