ELECTRON-OPTICAL SYSTEMS FOR MOTT POLARIMETERS

Electron-optical systems, forming polarized electron beams from solid and gaseous sources at a Mott detector with operating potentials of 20 and 50 kV, have been theoretically investigated. The integral EOS creates a beam < 2.6 nm in diameter at the target of the Mott detector for secondary electrons with energies of 1-20 eV and exit angles of 0-degrees-60-degrees. The differential EOS provides an energy resolution of 2-6% within the range of 3-2000 eV, the illumination being 5-13% for a 4 pi angle; at the target of the Mott detector it creates a beam of 1-6 mm in diameter. Both systems have been constructed at the laboratory of Spin-polarized Electron Spectroscopy (Department of Experimental Physics) at St. Petersburg State Technical University.