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Measurements of differential cross sections fore-Ar, Kr, Xe scattering atE = 0.05 − 2 eV

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Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

Differential scattering experiments have been performed for the systemse-Ar, Kr, Xe in the energy rangeE=0.05 − 2 eV and the angular range ϑ=20–100° using a crossed-beam arrangement. The measurements cover the region of the Ramsauer-Townsend minimum (for the first time in differential scattering using modern techniques) and show the drastic variation of the cross section over this energy range. For these experiments, a new electron spectrometer has been developed which is especially designed to allow measurements at very low collision energies under well controlled conditions. In the present work, the measurements could be extended down to 50 meV. The energy resolution was ΔE = 10 meV (FWHM). Absolute cross sections and the correct transmission properties of the systems are determined usinge-He scattering as a reference system. The experimental data are analysed by the MERT method which allows to extrapolate the cross sections to zero energy. On the basis of the MERT parameters, detailed comparison is made with other work.

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Author notes

  1. M. Weyhreter

    Present address: Grundig ISA, Dr. Mack-Str. 88, D-8510, Fürth, Federal Republic of Germany

  2. B. Barzick

    Present address: Osram GmbH, Hellabrunner Str. 1, D-8000, München 90, Federal Republic of Germany

Authors and Affiliations

  1. Fachbereich Physik, Universität Kaiserslautern, D-6750, Kaiserslautern, Federal Republic of Germany

    M. Weyhreter, B. Barzick, A. Mann & F. Linder

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Weyhreter, M., Barzick, B., Mann, A. et al. Measurements of differential cross sections fore-Ar, Kr, Xe scattering atE = 0.05 − 2 eV. Z Phys D - Atoms, Molecules and Clusters 7, 333–347 (1988). https://doi.org/10.1007/BF01439803

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