Photoelectron spectra of the molecular caesium halides have been studied using synchrotron radiation. Features are associated with ionisation from the halogen valence p6 shells and from the caesium 5p6 and 4d10 shells. Structure is largely consistent with ionisation from a classical ionic molecule. Ionisation from the Cs+ 5p shell gives rise to fine structure, which is attributed to electron correlation involving 'electron transfer' from the adjacent halogen anion. A similar process accompanying ionisation from the Cs+ 4d shell appears to prevent the 4f wavefunction collapse expected for the free Cs+ ion. N 4.5O2.3O2.3 Auger structure is observed associated with the collapse of all 4d holes.
|Number of pages||10|
|Journal||Journal of Physics B: Atomic and Molecular Physics|
|Publication status||Published - 1987|