• Article  

      Narrow positron lines from U-U and U-Th collisions 

      Clemente, M.; Berdermann, E.; Kienle, P.; Tsertos, Haralambos; Wagner, W.; Kozhuharov, C.; Bosch, F.; Koenig, W. (1984)
      Spectra of positrons emitted in heavy-ion-atom collisions close to the Coulomb barrier were measured. The data exhibit broad energy distributions according to expectations for induced positron creation by the strong ...
    • Article  

      On the production mechanism of the narrow positron lines observed in heavy-ion collisions 

      Tsertos, Haralambos; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Berdermann, E.; Clemente, M.; Wagner, W. (1987)
      Following a suggestion of Bang et al. we deduce that the total energy transfer associated with the narrow positron lines observed in heavy-ion collisions is given approximately by the sum of the rest masses of the positron ...
    • Article  

      On the scattering-angle dependence of the monochromatic positron emission from U + U and U + Th collisions 

      Tsertos, Haralambos; Berdermann, E.; Bosch, F.; Clemente, M.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Wagner, W. (1985)
      The narrow positron lines emitted in U + Th and U + U collisions were investigated with respect to their dependence on the heavy-ion scattering angle Θp. For U + U collisions also the excitation function was measured which ...
    • Article  

      Systematic studies of positron production in heavy-ion collisions near the Coulomb barrier 

      Tsertos, Haralambos; Berdermann, E.; Bosch, F.; Clemente, M.; Huchler, S.; Kienle, P.; Koenig, W.; Kozhuharov, C. (1992)
      We present the results obtained from systematic studies of positron creation for a series of heavy-collision systems, with united charge Zu=Z1+Z2 ranging from Zu=164 (Pb + Pb) to Zu=184 (U+U) at bombarding energies close ...