Browsing by Author "Berdermann, E."

Now showing items 1-14 of 14

    • Article  

      Experiments on e+e--line emission in HI collisions 

      Bär, R.; Bałanda, A.; Baumann, J.; Berg, W.; Bethge, K.; Bokemeyer, H.; Folger, H.; Fröhlich, O.; Ganz, R.; Hartung, O.; Samek, M.; Salabura, P.; Schön, W.; Schwalm, D.; Stiebing, K.; Thee, P.; Berdermann, E.; Heine, F.; Heinz, S.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Leinberger, U.; Schröter, A.; Tsertos, Haralambos (1995)
      We summarize the current status of e+e--coincidence experiments performed by the EPOS and ORANGE collaborations at GSI. © 1995.
    • Article  

      First energy and angle differential measurements of e+e--pairs emitted by internal pair conversion of excited heavy nuclei 

      Leinberger, U.; Berdermann, E.; Heine, F.; Heinz, S.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Schröter, A.; Tsertos, Haralambos; Hofmann, C.; Soff, G. (1998)
      We present the first energy and angle resolved measurements of e+e--pairs emitted from heavy nuclei (Ζ ≥ 40) at rest by internal pair conversion (IPC) of transitions with energies of less than 2 MeV as well as recent ...
    • Article  

      HADES Collaboration 

      Agakichiev, G.; Agodi, C.; Alvarez-Poll, H.; Badura, Eugen; Bałanda, A.; Bassini, R.; Bellia, G.; Berdermann, E.; Bertini, D.; Bielčík, Jaroslav; Boehmer, M.; Boiano, C.; Bokemeyer, H.; Boyard, J.; Brambilla, S.; Braun-Munzinger, P.; Chernenko, S.; Christ, T.; Coniglione, R.; Czok, U.; Dahlinger, M.; Daues, H. W.; Dohrmann, F.; Duran, I.; Eberl, T.; Emeljanov, V.; Fabbietti, L.; Fateev, O.; Finocchiaro, P.; Firsov, A.; Friese, J.; Froehlich, I.; Garzon, J. A.; Gernhuser, R.; Gilardi, C.; Golubeva, M.; Gonzales, D.; Grosse, E.; Guber, F.; Gringer, H.; Hehner, J.; Hennino, T.; Hlavac, S.; Hoffmann, J.; Holzmann, R.; Ierusalimov, A.; Iori, I.; Jaskula, M.; Jurkovic, M.; Kajetanowicz, M.; Kmpfer, B.; Kanaki, K.; Karavicheva, T.; Kirschner, D.; Koenig, W.; Koenig, I.; Kolb, B. W.; Kotte, R.; Krcken, R.; Kugler, A.; Khn, W.; Kulessa, R.; Kurepin, A.; Lang, S.; Lange, J. S.; Lehnert, J.; Maier, L.; Maier-Komor, P.; Maiolino, C.; Markert, J.; Metag, V.; Morinière, E.; Mousa, J.; Mnch, M.; Mntz, C.; Naumann, L.; Novotny, R.; Ott, W.; Otwinowski, J.; Pachmayer, Y. C.; Panebratsev, Y.; Pant, L.; Pechenov, V.; Perez, T.; Piattelli, P.; Pietraszko, J.; Pleskac, R.; Przygoda, W.; Pullia, A.; Ramstein, B.; Reshetin, A.; Ritman, J.; Rosier, P.; Roy, A.; Roy-Stephan, M.; Rustamov, A.; Sabin Fernandez, J.; Sadovski, A.; Sailer, B.; Salabura, P.; Sanchez, M.; Sapienza, P.; Schmah, A.; Schroeder, C.; Schfer, D.; Shileev, K.; Simon, R. S.; Skoda, M.; Smykov, L.; Spataro, S.; Spruck, B.; Stelzer, H.; Stroebele, H.; Stroth, J.; Sturm, C.; Sudol, M.; Tiflov, V.; Tlusty, P.; Toia, A.; Traxler, M.; Tsertos, Haralambos; Turzo, I.; Tyminska, K.; Varma, R.; Wagner, V.; Walus, W.; Winkler, S.; Wisniowski, M.; Wojcik, T.; Wstenfeld, J.; Zanevsky, Y.; Zovinec, D.; Zumbruch, P. (2006)
    • Article  

      Investigations of correlated ρ+ e- emission in heavy-ion collisions near the Coulomb barrier 

      Koenig, I.; Berdermann, E.; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Schröter, A.; Tsertos, Haralambos (1993)
      We present the results obtained from a series of ρ+ρ--coincidence measurements in heavy-ion collisions using the double-Orange β-spectrometer at GSI. The collision systems U+U, U+Pb, and U+Ta were investigated at bombarding ...
    • Article  

      Multiple positron structures observed from U-U collisions at 5.6 MeV/u and 5.9 MeV/u 

      Tsertos, Haralambos; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Berdermann, E.; Huchler, S.; Wagner, W. (1987)
      High resolution positron spectroscopy in U-U collisions at bombarding energies of 5.6 MeV/u, the lowest energy studied until now as well as of 5.9 MeV/u, reveals similar multiple structures between 220 keV and 385 keV ...
    • 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  

      New results on e+e--line emission in U+Ta collisions ORANGE collaboration at GSI 

      Leinberger, U.; Berdermann, E.; Heine, F.; Heinz, S.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Rhein, M.; Schröter, A.; Tsertos, Haralambos (1997)
      We present new results obtained from a series of follow-up e+e--coincidence measurements in heavy-ion collisions, utilizing an improved experimental set-up at the double-Orange β-spectrometer of GSI. The collision system ...
    • Article  

      On the momentum correlation of (e+e-) pairs observed in U + U and U + Pb collisions 

      Koenig, W.; Berdermann, E.; Bosch, F.; Huchler, S.; Kienle, P.; Kozhuharov, C.; Schröter, A.; Schuhbeck, S.; Tsertos, Haralambos (1989)
      First results on the energy and angular dependence of the (e+e-) pairs, emitted from U + U and U + Pb collisions at a beam energy of 5.9 MeV/u, are presented. The (e+e-) coincidence measurements were carried out utilizing ...
    • 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  

      Positron lines from subcritical heavy ion-atom collisions 

      Koenig, W.; Bosch, F.; Kienle, P.; Kozhuharov, C.; Tsertos, Haralambos; Berdermann, E.; Huchler, S.; Wagner, W. (1987)
      Positron lines were observed in heavy ion-atom collisions at bombarding energies close to the Coulomb barrier in subcritical systems with the sum of the atomic numbers of the colliding nuclei Zu=Z1+Z2 being smaller than ...
    • Article  

      Positron spectra from internal pair conversion observed in 238U + 181Ta collisions 

      Heinz, S.; Berdermann, E.; Heine, F.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Leinberger, U.; Rhein, M.; Schröter, A.; Tsertos, Haralambos (2000)
      We present new results from measurements and simulations of positron spectra, originating from 238U + 181Ta collisions at beam energies close to the Coulomb barrier. The measurements were performed using an improved ...
    • 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 ...
    • Article  

      Weak e+e- lines from internal pair conversion observed in collisions of 238U with heavy nuclei 

      Heinz, S.; Berdermann, E.; Heine, F.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Leinberger, U.; Rhein, M.; Schröter, A.; Tsertos, Haralambos (1998)
      We present the results of a Doppler-shift correction to the measured e+e--sum-energy spectra obtained from e+e--coincidence measurements in 238U + 206Pb and 238U + 181Ta collisions at beam energies close to the Coulomb ...