ESC FY2002 Annual Report: Synchrotron-Radiation-Based Photoelectron Spectroscopy at the Advanced Light Source

Tobin, J G ; Chung, B W ; Schulze, R K ; Shuh, D K

Lawrence Livermore National Laboratory

关键词: Electronic Structure;    Photoelectron Spectroscopy;    Spectra;    Forecasting;    43 Particle Accelerators;   

DOI  :  10.2172/15006360
RP-ID  :  UCRL-ID-150708
RP-ID  :  W-7405-ENG-48
RP-ID  :  15006360

美国|英语

来源: UNT Digital Library

【 摘 要 】

Despite recent intensive experimental effort, the electronic structure of Pu, particularly {delta}-Pu, remains ill defined. An evaluation of our previous synchrotron-radiation-based investigation of {alpha}-Pu and {delta}-Pu has lead to a new paradigm for the interpretation of photoemission spectra of U, Np, {alpha}-Pu, {delta}-Pu and Am. This approach is founded upon a model in which spin and spin-orbit splittings are included in the picture of the 5f states and upon the observation of chiral/spin-dependent effects in non-magnetic systems. By extending a quantitative model developed for the interpretation of core level spectroscopy in magnetic systems, it is possible to predict the contributions of the individual component states within the 5-f manifold. This has lead to a remarkable agreement between the results of the model and the previously collected spectra of U, Np, Pu and Am, particularly {delta}-Pu, and to a prediction of what we might expect to see in future spin-resolving experiments.