Observation of ionic sodium uranate precursors in a laser simulation of the conditions inside the bubble formed in an HCDA of an LMFBR
Journal Article
·
· Nucl. Sci. Eng.; (United States)
OSTI ID:6925598
The conditions inside the bubble formed in a hypothetical core disruptive accident (HCDA) of a liquid-metal fast breeder reactor have been simulated with a LAMMA 500 laser microprobe mass analyzer. Results for Na/sub 2/U/sub 2/O/sub 7/ show that negative diuranate and positive sodium uranate ions are produced. Higher laser powers favor greater fragmentation to U/sup +/, (UO)/sup +/, and (UO/sub 2/)/sup +/. The Na/sub 2/O/UO/sub 2/ results indicate vapor phase reactions result in the formation of positive and negative sodium uranate ion intermediates. Positive hydrogen ions are observed in some spectra. Higher laser energies (higher HCDA temperatures) favor sodium uranate ion formation. These data support the view that sodium uranate ionic precursors are formed in the vapor phase, bubble, of a simulated HCDA reaction. A prior argon-ionexcited secondary ion mass spectroscopy investigation of Na/sub 2/O/UO/sub 2/ and Na/sub 2/U/sub 2/O/sub 7/ showed no sodium uranate species, only the formation of U/sup +/, (UO)/sup +/, and (UO/sub 2/)/sup +/.
- Research Organization:
- Monsanto Research Corporation, Mound Facility, Miamisburg, Ohio 45342
- OSTI ID:
- 6925598
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 85:1; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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Observation of ionic sodium uranate precursors in a laser simulation of the conditions inside the bubble formed in an HCDA of an LMFBR
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500 -- Power Reactors
Breeding
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
BREEDER REACTORS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CHEMICAL COMPOSITION
COMPUTERIZED SIMULATION
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUIDS
GASES
IONS
LASERS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MASS SPECTRA
NUCLEAR REACTIONS
PHASE TRANSFORMATIONS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR CORE DISRUPTION
REACTOR CORES
REACTOR SAFETY
REACTORS
SAFETY
SIMULATION
SODIUM COMPOUNDS
SODIUM IONS
SODIUM URANATES
SPECTRA
URANATES
URANIUM COMPOUNDS
VAPORS
210500 -- Power Reactors
Breeding
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
BREEDER REACTORS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CHEMICAL COMPOSITION
COMPUTERIZED SIMULATION
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUIDS
GASES
IONS
LASERS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MASS SPECTRA
NUCLEAR REACTIONS
PHASE TRANSFORMATIONS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR CORE DISRUPTION
REACTOR CORES
REACTOR SAFETY
REACTORS
SAFETY
SIMULATION
SODIUM COMPOUNDS
SODIUM IONS
SODIUM URANATES
SPECTRA
URANATES
URANIUM COMPOUNDS
VAPORS