Determination of uranium(IV) crystal field parameters from RIXS

Understanding the magnetic properties of the actinides is non-trivial as spin-orbit and crystal field couplings are of the same magnitude so Russell-Saunders and jj models do...理解锕系元素（actinides）的磁性并非易事，因为自旋轨道耦合（spin-orbit coupling）与晶体场耦合（crystal field coupling）的强度相当，因此罗素-桑德斯（Russell-Saunders）模型与jj耦合模型（jj model）并不适用于……