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Our thanks are due to the technical staff of the pelletron: J. Aichinger, M. Bechtel, E. Freiheit, W. Funk, B. Keyerleber, R. Klumpp, M. Niedermaier, R. Prokopez, L. Raschke, H.J. Schwehn, and G. Steudle, The technical assistance of R. Henes, P.Keppler, W. Plenert, and G. Wiederoder is appreciated. The support of the SIN, Villigen, and of the BMFT, Bonn, is acknowledged. We are grateful to the authorities of the MPG who have made possible the relocation of the Mainz accelerator, and to the DFG for financing the positron source and beam line.
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Maier, K., Bauer, W., Briggmann, J. et al. Experimental limits for narrow lines in the excitation function of positron-electron scattering aroundE *=620 keV andE *=810 keV. Z. Physik A - Atomic Nuclei 326, 527–529 (1987). https://doi.org/10.1007/BF01289559
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DOI: https://doi.org/10.1007/BF01289559