PPT Slide
We use multiple scattering photoelectron diffraction theory
to calculate the angular distribution
of electrons photoemitted from core levels of fixed-in-space molecules.
Non-spherical scattering potentials,
needed for low photoelectron energies (E < 50 eV)
are included in our formalism through non-diagonal scattering matrices.
In addition, we have considered the effect of
the final-state Coulomb hole on the wavefunction.
As an example, we calculate the angular distribution of photoelectrons emitted
from the K shells of C in oriented gas-phase CO molecules,
as recently measured by several groups.
Particularly important are the energies for which shape resonances
appear in the continuum, with the angular distributions showing
radical changes over such resonances.