Zur Spinpolarisation langsamer Elektronen nach der Streuung an Molekülen

Abstract

Cross sections and spin polarization of low-energy electrons scattered by Bi(C₆H₅)₃, C₆H₆, H₂O and CCl₄ molecules were measured in the energy range from 60 to 1600 eV and angular range from 30 to 150°.

The independent-atom model gives good agreement between measured and calculated cross sections and spin polarization at higher energies. At lower energies, the polarization of electrons scattered from Bi(C₆H₅)₃ indicates the amount of screening of a central atom in a molecule by the surrounding radicals. In addition, the polarization measurements show that electrons scattered from molecules which consist of atoms with low atomic numbers are virtually unpolarized.