Dynamic screening in L2,3-shell transition metal x-ray absorption
A. L. Ankudinov, A. I. Nesvizhskii, J. J. Rehr
Abstract
Calculations of L-shell x-ray absorption in transition metals are shown to be sensitive to screening, both of the x-ray field and the photoelectron-core hole interaction. This screening is calculated using a generalization of the time dependent local density approximation and a projection onto a local atomic basis. The approach yields renormalized dipole-matrix elements which account for the observed deviations of the L3/L2 branching ratio from the 2:1 value of independent electron theory.
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