Positronenerzeugung bei Schwerionenstössen

  • H. Backe
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 143)


The positron production yields in close ion-atom collisions have been investigated for the U+Cm, U+U and U+Pb scattering systems at U beam energies between 4.7 and 5.9 MeV/u. Furtheron positron spectra were measured for the overcritical U+U and the undercritical U+Pb system at 5.9 MeV/u and a scattering angle 8 Lab Ion = 45°±10° . All positron yields, including earlier measurements, follow a simple scaling law. No characteristic deviations from this or other signatures indicating level diving for the overcritical U+Cm and U+U systems have been observed within the experimental errors of about 30 %.


Positron Yield Level Diving Eine groGe 
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  1. Arm K 79.
    P. Armbruster, P. Kienle Z. Physik A 291, 399 (1979)Google Scholar
  2. Bac 78.
    H. Backe, in: Trends in Physics 1978, ed. M.M. Woolfson, Adam Nilger Ltd., Bristol 1979, p 445Google Scholar
  3. Bac B 75.
    H. Backe, H. Bokemeyer, E. Kankeleit, E. Kuphal, Y. Nakayama, L. Richter, R. Willwater Laborbericht Nr. 67, Institut für Kernphysik der TH Darmstadt, 1975Google Scholar
  4. Bac B 80.
    H. Backe, W. Bonin, W. Engelhardt, E. Kankeleit, P. Senger, F. Weik, V. Metag, J.B. Wilhelmy to be published and GSI Scient. Rep. 80-3, p. 101Google Scholar
  5. Bac B 81.
    H. Backe, W. Bonin, E. Kankeleit, L. Richter, F. Weik, V. Metag, J.B: Wilhelmy et al. to be publishedGoogle Scholar
  6. Bac H 78.
    H. Backe, L. Handschug, F. Hessberger, E. Kankeleit, L. Richter, F. Weik, R. Willwater, H. Bokemeyer, P. Vincent, Y.Nakayama, J.S. Greenberg Phys. Rev. Letters 40, 1443 (1978)CrossRefGoogle Scholar
  7. Bal B 80.
    A. Bałanda, H.J. Beeskow, K. Bethge, H. Bokemeyer, H. Folger, J.S. Greenberg, H. Grein, A. Gruppe, S. Ito, S. Matsuki, R. Schulé, R. Schultz, D. Schwalm, J. Schweppe, R. Steiner, P. Vincent, M. Waldschmidt GSI Scient. Rep. 80-3, p. 161Google Scholar
  8. Ber B 80.
    E. Berdermann, F. Bosch, M. Clemente, F. Güttner, P. Kienle, W. Koenig, C. Kozhuharov, B. Martin, W. Potzel, B. Povh, Ch. Tsertos, W. Wagner, Th. Walcher GSI Scient. Rep. 80-3, p. 103Google Scholar
  9. Bok 79.
    H. Bokemeyer Atomic Physics with Heavy Ions GSI-Report 79-4 and Heavy Ion Physics. Eds.: A. Berind, V. Ceausescu, I.A. Dorobantu, Proceed. Predeal International School 1978, p. 489Google Scholar
  10. HeB 77.
    F.P. Heßberger Untersuchungen zur Nachweiswahrscheinlichkeit eines Solenoid-Beta-Spektrometers für Positronen Diplomarbeit 1977, Institut für Kernphysik der TH DarmstadtGoogle Scholar
  11. Kan 78.
    E. Kankeleit, in: Nuclear Interactions, ed. by B.A. Robson, Lecture Notes in Physics. Vol. 92. Springer-Verlag, New York 1979, p. 306Google Scholar
  12. Kan 79.
    E. Kankeleit, in: Proceedings of the Twelfth Summer School of Nuclear Physics, Miko-rajki, Poland, 1979, Nukleonika 25, 253 (1980) and Institut für Kernphysik, Technische Hochschule Darmstadt, Report 79/20Google Scholar
  13. Kau K 78.
    K.G. Kaun, S.A. Karamyan JINR P 7-11420, Dubna 1978 and GSI-tr-9/78 (Übersetzung P. Strehl)Google Scholar
  14. Koz K 79.
    C. Kozhuharov, P. Kienle, E. Berdermann, H. Bokemeyer, J.S. Greenberg, Y. Nakayama, P. Vincent, H. Backe, L. Handschug, E. Kankeleit Phys. Rev. Letters 42, 376 (1979)CrossRefGoogle Scholar
  15. Lie A 80.
    D. Liesen, P. Armbruster, F. Bosch, S. Hagmann, P.H. Mokler, H.J. Wollersheim, H. Schmidt-Bbcking, R. Schuch, J.B. Wilhelmy Phys. Rev. Letters 44, 983 (1980)CrossRefGoogle Scholar
  16. Mig 77.
    A.B. Migdal: Qualitative Methods in Quantum Theory. (London and Amsterdam: Benjamin; Ontario, Sydney and Tokyo: Don Mills), 1977, p. 115Google Scholar
  17. Raf F 78.
    J. Rafelski, L. Fulcher, A. Klein Phys. Rep. 38 C, 227 (1978)CrossRefGoogle Scholar
  18. Raf M 78.
    F. Rafelski, B. Müller, W. Greiner Z. Physik A 285, 49 (1978)Google Scholar
  19. Rei B 80.
    J. Reinhardt, W.Betz, P. Gärtner, J. Kirsch, U. Müller, T. dè Reus, K.H. Wietschorke, G. Soff, B. Müller, W. Greiner Proceedings of the XVIII International Winter Meeting on Nuclear Physics, Bormio 1980, p. 816Google Scholar
  20. Rei G 77.
    J. Reinhardt, W. Greiner Rep. Progr. Phys. 40, 219 (1977)CrossRefGoogle Scholar
  21. Rei G 80.
    J. Reinhardt, W. Greiner, B. Müller, G. Soff: Electronic and Atomic Collisions, Eds.: N. Oda, K. Takayanagi, Morth-Holland Publishing Company, Amsterdam 1980, p. 369Google Scholar
  22. Rei O 78.
    J. Reinhardt, V. Oberacher, B. Müller, W. Greiner, G. Soff GSI-Bericht-M-8-78Google Scholar
  23. Rei S 79.
    J: Reinhardt, G. Soff, B. Müller, W. Greiner: Erice School an Heavy Ion Interactions at High Energies, Erice (Italy), 26 March–6 April, 1979Google Scholar
  24. Sch S 78.
    P. Schlüter, G. Soff, W. Greiner Z. Physik A 286, 149 (1978)Google Scholar
  25. Sch T 78.
    R. Schmidt, V.D. Toneev, G. Wolschin Nucl. Phys. A 311, 247 (1978)Google Scholar
  26. Sof R 78.
    G. Soff, J. Reinhardt, W. Betz, J. Rafelski Phys. Scripta 17, 417 (1978)Google Scholar
  27. Sof R 79.
    G. Soff, J. Reinhardt, B. Müller, W. Greiner Phys. Rev. Letters 43, 1981 (1979)CrossRefGoogle Scholar
  28. Wei 80.
    F. Weik Dissertation 1980, Institut für Kernphysik der Technischen Hochschule DarmstadtGoogle Scholar
  29. Wie M 79.
    K.-H. Wietschorke, B. Müller, W. Greiner, G. Soff J. Phys. B 12, L 31 (1979)Google Scholar
  30. Wol 77.
    G. Wolschin Nukleonika 22, 1165 (1977)Google Scholar

Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • H. Backe
    • 1
  1. 1.Institut für KernphysikTechnische Hochschule DarmstadtGermany

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