Polarization of slow electrons (100 2000 ev) elastically scattered from heavy atoms

Details Polarization of slow electrons (100 2000 ev) elastically scattered from heavy atoms Polarization of slow electrons (100 2000 ev) elastically scattered from heavy atoms

Jun 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968zphy..208..286b&link_type=abstract

Zeitschrift für Physik, Volume 208, Issue 3, pp.286-298

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23

Scientific paper

The angular and energy dependence of the Mott polarization for slow electrons is explained in terms of the complex zeros of the scattering amplitude f(z), where z is the cosine of the scattering angle. The trajectories in the complex z-plane, on which the zeros move if the energy is varied, are shown in the case of scattering from mercury atoms. The properties of these trajectories imply that there are, in fact, certain combinations of energy and angle, for which total polarization occurs. Calculations for target atoms lighter than mercury show, that the number of such combinations becomes smaller and the corresponding energy values are shifted to lower energies. The possibility is also discussed to extract the complex zeros and the other relevant parameters from the experimental data rather than from theoretical calculations, which to some extent are sensitive to the model of the atomic potential.

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