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Title: Evolution of uranium monoxide in femtosecond laser-induced uranium plasmas

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.25.011477· OSTI ID:1358479
 [1]; ORCiD logo [2];  [2];  [2];  [3]
  1. The Pennsylvania State Univ., University Park, PA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Florida, Gainesville, FL (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States)

We report on the observation of uranium monoxide (UO) emission following fs laser ablation (LA) of a uranium metal sample. The formation and evolution of the molecular emission is studied under various ambient air pressures. Observation of UO emission spectra at a rarefied residual air pressure of ~1 Torr indicates that the UO molecule is readily formed in the expanding plasma with trace concentrations of oxygen present within the vacuum chamber. The persistence of the UO emission exceeded that of the atomic emission; however, the molecular emission was delayed in time compared to the atomic emission due to the necessary cooling and expansion of the plasma before the UO molecules can form.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation; US Department of Homeland Security (DHS)
Grant/Contract Number:
AC05-76RL01830; NA0002534; 2012.05 DN-130-NF0001
OSTI ID:
1358479
Alternate ID(s):
OSTI ID: 1367671; OSTI ID: 1454764
Report Number(s):
PNNL-SA-123838; OPEXFF; DN2001000
Journal Information:
Optics Express, Vol. 25, Issue 10; ISSN 1094-4087
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (6)

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
Progress of laser-induced breakdown spectroscopy in nuclear industry applications journal October 2019
Elemental composition analysis of granite rocks using LIBS and LA-TOF-MS journal January 2018