About photoemission final state effects

[arrektor]

When doing photoelectron spectroscopy, you excite a system containing of n electrons using photons to a system that contains n-1 electrons + the photoelectron.

As I know, the information that you get out of the electron being measured from the electron analyzer does not contain the exact information of the inital n system because the electron travels through the surrounding dielectric.

My question is whether the information extracted from the photoelectron contains information also about the n-1 system.

 

[BigJDubs]

Yes, the information extracted from the photoelectron can contain information about the n-1 system. The momentum and energy of the ejected electron can provide some clues about the orbitals of the n-1 system. For instance, if the electron is emitted with high kinetic energy, it is likely that it came from an orbital with higher energy than the other orbitals in the system. Similarly, if the electron is emitted with a large momentum, it is likely that the orbital it came from had a large angular momentum. By studying the characteristics of the emitted electrons, one can gain some insight into the structure of the n-1 system.