POLARIZATION OF ELECTRONS ELASTICALLY SCATTERED FROM XENON AT ENERGIES BETWEEN 5 AND 300 EV

Measurements are reported of the spin polarisation of electrons elastically scattered from a xenon atomic beam for scattering angles between 30 degrees and 120 degrees at collision energies between 5.5 and 300 eV. Good agreement is found with the experimental work of Schackert (50 and 100 eV, 1968) and of Kessler et al. (150-300 eV, 1977). In the 150-300 eV range, the best agreement is found with the exchange calculations of Walker (150-300 eV, 1971) whereas at energies below 150 eV all existing calculations fail to predict the correct polarisation.