ADAPTING A COMPACT MOTT SPIN POLARIMETER TO A LARGE COMMERCIAL ELECTRON-ENERGY ANALYZER FOR SPIN-POLARIZED ELECTRON-SPECTROSCOPY

A modified Rice University-type compact Mott spin polarimeter operatin g at 20 kV is adapted to a large commerical hemispherical electron ene rgy analyzer. Normal energy analyzer functions are preserved via a ret ractable channeltron in the polarimeter acceleration column. In the sp in-detection mode, the polarimeter permits analysis of two orthogonal transverse spin-polarization components. Electron trajectory analysis is used to optimize polarimeter lens column voltages in both normal an d spin-detection modes. Performance levels are established by experime nts and significantly improved spin-detection efficiency is shown to b e accessible by changes in the polarimeter collection solid angle.