WFRF:(Werme Lars)
Search: WFRF:(Werme Lars) > (2005-2009) > Resonant Soft X-ray...
- 6 of 8
- Previous record
- Next record
- To hitlist
Resonant Soft X-ray Spectroscopic Studies of Light Actinides and Copper Systems
-
- Modin, Anders, 1975- (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
- Butorin, Sergei (thesis advisor)
- Werme, Lars (thesis advisor)
- show more...
- Nordgren, Joseph (thesis advisor)
- show less...
- (creator_code:org_t)
- ISBN 9789155474768
- Uppsala : Acta Universitatis Upsaliensis, 2009
- English 63 s.
- Series: Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, 1651-6214 ; 626
- Doctoral thesis (other academic/artistic)
Abstract
Subject headings
Close
- Light actinides and copper systems were studied using resonant soft X-ray spectroscopy.An instrumental and experimental setup for soft X-ray spectroscopy meeting the requirements of a closed source for radioactivity was developed and described in detail. The setup was used for studies of single-crystal PuO2 oxidation. The existence of higher oxidation state than Pu(IV) in some surface areas of the single crystal were found from O 1s X-ray absorption measurements. Furthermore, from comparison with first principles calculations it was indicated that plutonium oxide with Pu fraction in a higher oxidation state than Pu(IV) consists of inequivalent sites with Pu(IV)O2 and Pu(V)O2 rather than a system where the Pu oxidation state is constantly fluctuating between Pu(IV) an Pu(V).It was shown that a combination of resonant O Kα X-ray emission and O 1s X-ray absorption spectroscopies can be used to study electron correlation effects in light-actinide dioxides.The electronic structure of copper systems was studied using resonant inelastic soft X-ray scattering and absorption spectroscopy. It was found that X-ray absorption can be used to monitor changes in the oxidation state but as differences between systems with the same oxidation state are in many cases small, speciation is uncertain. Therefore, a method utilizing resonant inelastic X-ray scattering as fingerprint to characterize complex copper systems was developed. The data recorded at certain excitation energies revealed unambiguous spectral fingerprints for different divalent copper systems. These specific spectral fingerprints were then used to study copper films exposed to different solutions. In particular, it was shown that resonant inelastic X-ray scattering can be used in situ to distinguish between CuO and Cu(OH)2, which is difficult with other techniques.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- Atomic and molecular physics
- Atom- och molekylfysik
- Fysik
- Physics
Publication and Content Type
- vet (subject category)
- dok (subject category)
Find in a library
- Resonant Soft X-ray Spectroscopic Studies of Light Actinides and Copper Systems (Search the publication in LIBRIS)
To the university's database
- 6 of 8
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Modin, Anders, 1 ...
- Butorin, Sergei
- Werme, Lars
- Nordgren, Joseph
- Smith, Kevin, Pr ...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Atom and Molecul ...
- Parts in the series
- Digital Comprehe ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
