Formation of 238U16O and 238U18O observed by time-resolved emission spectroscopy subsequent to laser ablation
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Illinois, Urbana-Champaign, IL (United States). Illinois Applied Research Inst.
- Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Nuclear, Plasma, and Radiological Engineering
Here, 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.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE; Defense Threat Reduction Agency (DTRA)
- Grant/Contract Number:
- AC52-07NA27344; HDTRA1-16-1-0020
- OSTI ID:
- 1414346
- Alternate ID(s):
- OSTI ID: 1371790
- Report Number(s):
- LLNL-JRNL-729818; TRN: US1800682
- Journal Information:
- Applied Physics Letters, Vol. 111, Issue 3; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Gas Phase Chemical Evolution of Uranium, Aluminum, and Iron Oxides
|
journal | July 2018 |
Optical spectroscopy of laser-produced plasmas for standoff isotopic analysis
|
journal | June 2018 |
Simulation of uranium plasma plume dynamics in atmospheric oxygen produced via femtosecond laser ablation
|
journal | August 2018 |
Plume dynamics and gas-phase molecular formation in transient laser-produced uranium plasmas
|
journal | August 2019 |
Laser-produced uranium plasma characterization and Stark broadening measurements
|
journal | September 2019 |
Similar Records
An evaluation of paired δ18O and (234U/238U)0 in opal as a tool for paleoclimate reconstruction in semi-arid environments
The effect of oxygen concentration on the speciation of laser ablated uranium