Lawrence Berkeley National Laboratory
Angular distributions of electrons photoemitted from core levels of oriented diatomic
molecules: Multiple scattering theory in non-spherical potentials
- Author(s): Diez Muino, R.
- Rolles, D.
- Garcia de Abajo, F.J.
- Fadley, C.S.
- Van Hove, M.A.
- et al.
We use multiple scattering in non-spherical potentials (MSNSP) to calculate the angular distributions of electrons photoemitted from the 1s-shells of CO and N2 gas-phase molecules with fixed-in-space orientations. For low photoelectron kinetic energies (E<50 eV), as appropriate to certain shape-resonances, the electron scattering must be represented by non-spherical scattering potentials, which are naturally included in our formalism. Our calculations accurately reproduce the experimental angular patterns recently measured by several groups, including those at the shape-resonance energies. The MSNSP theory thus enhances the sensitivity to spatial electronic distribution and dynamics, paving the way toward their determination from experiment.