1s2p RIXS Calculations for 3d Transition Metal Ions in Octahedral Symmetry

Figure 16

Atomic term scheme with spin-orbit coupling for Ni²⁺ comparing the two-step (1s XAS, 2p XES) 1s2p RIXS and the one-step 2p XAS pathways. Here, it should be noted that the two IS terms are only separated by the small 3d SOC . Note that the final state is similar to Ti⁴⁺. Nonaccessible terms (e.g., final states with ) are omitted for clarity.