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Formation and stability of actinide oxides: a valence band photoemission study
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Alice Seibert
Published/Copyright:
September 25, 2009
Abstract
Thin films of the actinides from Th to Am were investigated concerning their oxidation with molecular oxygen and the more reactive atomic oxygen. Photoemission spectroscopy was used to perform chemical analysis of the surface/near surface (bulk) region of actinide thin films produced by sputter deposition, therewith giving insight into oxidation and corrosion processes on these surfaces, as well as providing direct evidence on their electronic structure. Reaction intermediates (chemisorbed species, top-surface oxides) and the stable bulk oxides were identified and characterised. Their formation throughout the actinide series is interpreted in the framework of the electronic structure information.
Published Online: 2009-9-25
Published in Print: 2009-5-1
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Articles in the same Issue
- Preface
- Solubility of Pu and rare-earths in LiCl-Li2O melt
- Solubility of plutonium in MgCl2 and CaCl2 solutions in contact with metallic iron
- Complex formation and solubility of Pu(IV) with malonic and succinic acids
- New insights in the formation processes of Pu(IV) colloids
- Redox equilibria of Pu4+/Pu3+ and PuO22+/Pu4+ couples in molten NaCl-CsCl eutectic as measured by absorption spectrophotometry
- In search of an optimum plutonium density measurement fluid
- Some aspects of neptunium acetohydroxamic acid chemistry under acidic conditions
- Excitation spectra of near-infrared photoluminescence from Np(VI) in Cs2U(Np)O2Cl4
- Study of reaction of curium oxy-compound formation in molten chlorides
- Extraction behaviour of actinides and lanthanides in TALSPEAK, TRUEX and NPEX processes of UREX+
- Effect of oxide ions on separation factors of actinides from lanthanides in reductive extraction
- Solid phase precipitates in (Zr,Th)-OH-(oxalate, malonate) ternary aqueous system
- The adsorption of ammonia on polycrystalline thorium
- Formation and stability of actinide oxides: a valence band photoemission study
- Plutonium traces in atmospheric precipitation and in aerosols from Krakow and Bialystok
- Plutonium in the environment: key factors related to impact assessment in case of an accidental atmospheric release
- Unveiling the history of seized plutonium through nuclear forensic investigations
