SPIN-RESOLVED ELASTIC SCATTERING OF ELECTRONS FROM MANGANESE ATOMS R. Meintrup and G. F. Hanne Physikalisches Institut, Universit=E4t M=FCnster, Wilhelm-Klemm-Str. 10, D-48149 M=FCnster, Germany Spin exchange collisions with inner-shell electrons have been observed directly by studying elastic scattering of electrons from Mn atoms at 20 eV using polarized incident electrons. The polarization after scattering was measured, and spin exchange was thus obtained directly which results from exchange with electrons from the unsaturated 3d inner shell of Mn.