X-Ray photoelectron study of actinide (Th, U, Pu, Am) nitrates

ciated with the formation of the outer valence mo lecular orbitals due to the in teraction of the An6d–, 7s, 5f – O2p elec trons, and the fine spec tral structure in the binding en ergy range from ~15 to ~50 eV – with the for mation of the in ner valence molecular orbitals due to the interaction of the An6p – O2s elec trons from the filled neigh boring atomic orbitals of actinide and oxygen in the studied com pounds. The fine structure of the core level elec tron spectra in the binding en ergy range from ~50 to 1000 eV was shown to correlate with the actinide ion ox i da tion state.