Abstract
As a first step in the study of the structure at x-ray absorption edges, we have examined the discrete transitions corresponding to the atomic transitions and the corresponding shakeup processes for Cu atom and for a Cu(ii) model system, Cu. For Cu the lowest strong transitions have the character (). About 7.5 eV lower is a group of transitions involving simultaneous with ligand-to-metal shakedown. About 18.7 eV below the main peak is a weak (65 times weaker) quadrupole-allowed transition corresponding to (i.e., ). These results are in agreement with typical assignments of x-ray absorption spectra of Cu(ii) systems except that the middle transition is usually assigned as , whereas we find this transition to be plus shakedown. (Transitions of the character are calculated but have intensities far too low to have been observed.)
- Received 22 January 1980
DOI:https://doi.org/10.1103/PhysRevB.22.2767
©1980 American Physical Society