Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV

Leuer B, Baum G, Grau L, Niemeyer R, Raith W, Tondera M (1995)
Z.Phys. D 33(1): 39-42.

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Twenty years ago a theoretical analysis showed that electron scattering by high-Z one-electron atoms might lead to interference of exchange and spin-orbit interactions at low electron energies, observable as a cross-section asymmetry if unpolarized electrons are scattered by polarized cesium atoms. By using a highly polarized cesium atomic beam, we studied exchange and spin-orbit effects at different electron energies, starting at 20 eV and going down. We observed the first distinctly non-zero interference asymmetry at 7 eV: Over the angular range of 35 to 145 degrees, it varies between +0.02 and -0.02 and goes through zero near 110 degrees being negative at larger angles.
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Leuer B, Baum G, Grau L, Niemeyer R, Raith W, Tondera M. Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV. Z.Phys. D. 1995;33(1):39-42.
Leuer, B., Baum, G., Grau, L., Niemeyer, R., Raith, W., & Tondera, M. (1995). Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV. Z.Phys. D, 33(1), 39-42.
Leuer, B., Baum, G., Grau, L., Niemeyer, R., Raith, W., and Tondera, M. (1995). Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV. Z.Phys. D 33, 39-42.
Leuer, B., et al., 1995. Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV. Z.Phys. D, 33(1), p 39-42.
B. Leuer, et al., “Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV”, Z.Phys. D, vol. 33, 1995, pp. 39-42.
Leuer, B., Baum, G., Grau, L., Niemeyer, R., Raith, W., Tondera, M.: Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV. Z.Phys. D. 33, 39-42 (1995).
Leuer, B., Baum, Günter, Grau, L, Niemeyer, R, Raith, Wilhelm, and Tondera, M. “Measurement of Exchange and Spin-orbit Effects and their Interference in Elastic e-Cs Scattering at 7-eV”. Z.Phys. D 33.1 (1995): 39-42.
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