Structure of the X-ray photoelectron, emission and conversion spectra and molecular orbitals of uranium compounds

It is shown that fine structure of the X-ray electron spectra of the uranium compounds within the range of electron binding energies from 0 up to ∼ 50 eV is connected with electrons of outer and internal valent molecular orbitals, which originate from the valent atom shells. This is in agreement with the calculational results of the electron structure of these compounds and it is confirmed by the data on their studies through the methods of nuclear-electron (conversion) and X-ray emission spectroscopy. It is shown that fine structure of the X-ray electron spectra connected with electrons of the internal valent molecular orbitals, makes it possible to come to conclusions on the degree of participation of the filled atom shells electrons in chemical binding, on the structure of the nearest surrounding of the atom under consideration and long lengths in the compounds