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Soft X-Ray Studies of Pu Electronic Structure: Past Lessons From XAS and Future Direction With BIS

Conference ·

Synchrotron-radiation-based spectroscopies such as X-ray Absorption Spectroscopy (XAS) have contributed greatly to our improved understanding of Pu electronic structure. However, significant questions remain concerning the nature of Pu electronic structure. Perhaps the missing piece of the puzzle is the direct experimental determination of the unoccupied electronic structure using high energy inverse photoelectron spectroscopy (IPES) or Bremstrahlung Isochromat Spectroscopy (BIS). Past BIS studies of Th and U indicate the feasibility and utility of Pu studies. To this end, a new BIS capability has been developed in our laboratory. Electron stimulated emission of photons has been carried out using the XES-350 monochromator and detector system. Our preliminary results and future plans will be presented.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
945656
Report Number(s):
LLNL-PROC-409369
Country of Publication:
United States
Language:
English

References (5)

Failure of Russell-Saunders Coupling in the 5 f States of Plutonium journal May 2003
Resonant photoemission in f -electron systems: Pu and Gd journal October 2003
Applicability of the Spin-Orbit Sum Rule for the Actinide 5 f States journal August 2004
High-energy spectroscopic study of the occupied and unoccupied 5 f and valence states in Th and U metals journal March 1980
Competition between delocalization and spin-orbit splitting in the actinide 5 f states journal August 2005

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