Abstract
Cross sections of elastic electron scattering by mercury nuclei have been measured at energies and angles where the screening of the nuclear Coulomb field by the atomic cloud begins to play a role. Electrons of 46, 79, 100, and 204 keV were scattered by a mercury atomic beam and the angular distribution of the elastically scattered electrons was measured between 45‡ and 135‡. There are considerable discrepancies between the results of theoretical studies which take the influence of screening into account. The present measurements confirm the theoretical results ofLin et al. within the experimental error of about 2%.
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We want to thank Dr. W.Bühring for his cooperation in recalculating the cross sections for the screened potential and for his kind permission to present his results in this paper. We are grateful to Prof. Dr. W.Buckel for supporting this work and for his kind interest. We are also indebted to the Deutsche Forschungsgemeinschaft for financial support.
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Kessler, J., Weichert, N. The influence of screening on Mott scattering by mercury atoms. Z. Physik 212, 48–60 (1968). https://doi.org/10.1007/BF01379896
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DOI: https://doi.org/10.1007/BF01379896