Electron momentum spectroscopy of atoms, molecules and thin filmsстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
Аннотация:The theory of electron momentum spectroscopy (EMS), a technique based on the single (multiple) electron impact ionization of a quantum target (atom, molecule, thin Nm), is reviewed. The advantages of EMS as a means for interpreting outgoing momentum distributions as compared to other methods for directly measuring the many-body wave function of the target are vastly illustrated. It is shown that EMS contributes profoundly to advances in the quantum chemistry of molecules allowing, in particular, to gain insight into how electron orbitals transform as molecules approach one another adiabatically, and to study in detail the band structure and one-electron wave functions in both crystalline and amorphous thin films. The possibility of the direct double ionization "portraying" of the electron correlations is also studied.