By exploiting in a systematic manner the transformation properties of the general term of the curved-wave multiple-scattering series under rotations, we derive a recursion formula that allows us to compute in a fast and efficient way the building blocks of such terms. This method is applicable both to the polarization-averaged, as well as the polarization-dependent, quantities. One can therefore exploit in data analysis, when possible, the additional simplification brought about by the selective power of the polarization, especially at low energies 20–150 eV, where the effect of the curvature of the photoelectron wave becomes sizable.

• Received 23 May 1988

DOI:https://doi.org/10.1103/PhysRevB.39.1488