Applicability of the Spin-orbit Sum Rule for the Actinide 5? States

Chung, B ; Tobin, J ; Moore, K ; der Laan, G v ; Schwartz, A ; Wall, M

Lawrence Livermore National Laboratory

关键词: 99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Absorption Spectroscopy;    Actinides;    36 Materials Science;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/15013862
RP-ID  :  UCRL-TR-202444
RP-ID  :  W-7405-ENG-48
RP-ID  :  15013862

美国|英语

来源: UNT Digital Library

【 摘 要 】

The branching ratio of core-valence transitions in x-ray absorption spectroscopy and electron energy loss spectroscopy is linearly related to the expectation value of the spin-orbit operator of the valence states. Here, we analyze the measured branching ratio of the N{sub 4,5} edges acquired by electron energy-loss spectroscopy in a transmission electron microscope, and synchrotron-radiation-based x-ray absorption. Results show that the spin-orbit sum rule can be applied to actinide 5f states, where the accuracy can be increased using the correction term obtained from atomic many-electron calculations.