Spin and energy analysis of electron beams:: Coupling a polarimeter based on exchange scattering to a hemispherical analyzer

We have coupled a high efficiency polarimeter based on exchange scattering from a magnetized target to a hemispherical analyzer. The target is a Fe(001)-p(1x1)O surface which gives rise to highly spin-dependent scattering in the 4-6 eV electron kinetic energy range. Due to the low scattering energy, the design of the transfer electron optics from the analyzer exit slit to the target is really crucial. We describe in detail the adopted solution along with the performances of the entire apparatus. For low values of the analyzer pass energy we have measured an overall efficiency of 7x10(-4) with an analyzing power (Sherman function) of 0.2. As an example of application spin-resolved photoemission data from Fe(001) are reported. (C) 2002 American Institute of Physics.