Advertisement

Zeitschrift für Physik A Atomic Nuclei

, Volume 335, Issue 4, pp 421–430 | Cite as

Reactions of40Ar with233U,235U, and238U at the barrier

  • U. W. Scherer
  • W. Brüchle
  • M. Brügger
  • C. Frink
  • H. Gäggeler
  • G. Herrmann
  • J. V. Kratz
  • K. J. Moody
  • M. Schädel
  • K. Sümmerer
  • N. Trautmann
  • G. Wirth
Havylon Physics, Fission

Abstract

Production cross sections for target-like transfer products in reactions of40Ar with233,235,238U at the barrier were determined using radiochemical techniques. The heaviest products detected are isotopes of californium (Z=98). In addition to the quasi-elastic component of the isotopic distributions observed in the vicinity of uranium, there are also relaxed contributions throughout the entire region. The peak positions of the isotope distributions of this component for fixed atomic number, after the transfer of > 3 charges, approach closely the minimum of the potential energy surfaces (PES). The experimental results thus indicate the cold formation of the reaction products. A search for long-lived heavy actinides produced, by fusion-evaporation, via isotopes of element 110 and their subsequent decay through α-decay chains, remained unsuccessful at a cross section limit of 21 pb.

PACS

25.70.CD 25.70.JJ 25.70.LM 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Gäggeler, H., Blaich, Th., Brüchle, W., Brügger, M., Daniels, W.R., Fowler, M.M., Gregorich, K.E., von Gunten, H.R., Herrmann, G., Hildebrand, N., Hoffmann, D.C., Kratz, J.V., Lee, D., Lerch, M., Moody, K.J., Schädel, M., Seaborg, G.T., Sümmerer, K., Trautmann, N., Welch, R.B., Wirth, G.: J. Less. Comm. Metals122, 433 (1986); Phys. Rev. C33, 1983 (1986)Google Scholar
  2. 2.
    Türler, A.: Doctoral Thesis, University of Bern 1989Google Scholar
  3. 3.
    Swiatecki, W.J.: Nucl. Phys. A376, 275 (1982)Google Scholar
  4. 4.
    Keller, H., Bellwied, R., Lützenkirchen, K., Kratz, J.V., Brüchle, W., Gäggeler, H., Moody, K.J., Schädel, M., Wirth, G.: Z. Phys. A — Atomic Nuclei328, 255 (1987)Google Scholar
  5. 5.
    Oganessian, Yu.Ts., Lobanov, Yu.V., Hussonnois, M., Kharitonov, Yu.P., Gorski, B., Constantinescu, O., Popeko, A.G., Bruchertseifer, H., Sagaidak, R.N., Tretyakova, S.P., Buklanov, G.V., Rykhlyuk, A.V., Gulbekyan, G.G., Pleve, A.A., Ivanov, G.N., Plotko, V.M.: Dubna-Preprint D 7-87-392 (1987)Google Scholar
  6. 6.
    Scherer, U.W.: Doctoral thesis, Universität Mainz 1989Google Scholar
  7. 7.
    Frink, C.: Doctoral thesis, Universität Mainz 1987Google Scholar
  8. 8.
    Hubert, F., Fleury, A., Bimbot, R., Gardès, D.: Ann. Phys. (Paris)5, 1980Google Scholar
  9. 9.
    Münzenberg, G.: Rep. Prog. Phys.51, 57 (1988)Google Scholar
  10. 10.
    Sikkeland, T.: Ark. Fys.,36, 539 (1966)Google Scholar
  11. 11.
    Oganessian, Yu.Ts., Penionzhkevich, Yu.E., Gavrilov, V.A., Kim, De En: Sov. J. Nucl. Phys.21, 126 (1975)Google Scholar
  12. 12.
    Gunnink, R., Niday, J.B.: Livermore Report UCLR-51061 (1971)Google Scholar
  13. 13.
    Kratz, J.V., Liljenzin, J.O., Norris, A.E., Seaborg, G.T.: Phys. Rev. C13, 2347 (1976)Google Scholar
  14. 14.
    Brosa, U., Westmeier, W.: Nucl. Phys. A441, 109 (1985)Google Scholar
  15. 15.
    Freiesleben, H., Kratz, J.V.: Phys. Rep.106, 1 (1984)Google Scholar
  16. 16.
    Lützenkirchen, K., Kratz, J.V., Brüchle, W., Gäggeler, H., Sümmerer, K., Wirth, G.: Z. Phys. A — Atoms and Nuclei317, 55 (1984)Google Scholar
  17. 17.
    Schädel, M., Brüchle, W., Brügger, M., Gäggeler, H., Moody, K.J., Schardt, D., Sümmerer, K., Hulet, E.K., Dougan, A.D., Dougan, R.J., Landrum, J.H., Lougheed, R.W., Wild, J.F., O'Kelley, G.D.: Phys. Rev. C33, 1547 (1986)Google Scholar
  18. 18.
    Lee, D., von Gunten, H.R., Jacak, B., Nurmia, M., Liu, Y.-F., Luo, C., Seaborg, G.T., Hoffman, D.C.: Phys. Rev. C25, 286 (1982)Google Scholar
  19. 19.
    Lee, D., Moody, K.J., Nurmia, M.J., Seaborg, G.T., von Gunten, H.R., Hoffman, D.C.: Phys Rev. C27, 2656 (1983)Google Scholar
  20. 20.
    de Souza, R.T., Huizenga, J.R., Schröder, W.U.: Phys. Rev. C37, 1901 (1988)Google Scholar
  21. 21.
    Sikkeland, T., Ghiorso, A., Nurmia, M.J.: Phys. Rev.172, 1232 (1968)Google Scholar
  22. 22.
    Viola, V.E.: Nucl. Data. A1, 391 (1966), and Viola, V.E., Seaborg, G.T.: J. Inorg. Nucl. Chem.28, 697 (1966)Google Scholar
  23. 23.
    Shen, W.Q., Albinski, J., Gobbi, A., Gralla, S., Hildenbrand, K.D., Herrmann, N., Kuzminski, J., Müller, W.F.W., Stelzer, H., Töke, J., Back, B.B., Bjornholm, S., Sorensen, S.P.: Phys. Rev. C36, 115 (1987)Google Scholar
  24. 24.
    Münzenberg, G., Armbruster, P., Folger, H., Hessberger, F.P., Hofmann, S., Keller, J., Poppensieker, K., Reisdorf, W., Schmidt, K.-H., Schött, H.-J., Leino, M.E., Hingmann, R.: Z. Phys. A — Atoms and Nuclei317, 235 (1984)Google Scholar
  25. 25.
    Münzenberg, G., Hofmann, S., Folger, H., Hessberger, F.P., Keller, J., Poppensieker, K., Quint, B., Reisdorf, W., Schmidt, K.-H., Schött, H.-J., Armbruster, P., Leino, M.E., Hingmann, R.: Z. Phys. A — Atoms and Nuclei322, 227 (1985)Google Scholar
  26. 26.
    Münzenberg, G., Armbruster, P., Berthes, G., Folger, H., Hessberger, F.P., Hofmann, S., Poppensieker, K., Reisdorf, W., Quint, B., Schmidt, K.-H., Schött, H.-J., Sümmerer, K., Zychor, I., Leino, M.E., Gollerthan, U., Hanelt, E.: Z. Phys. A — Atomic Nuclei324, 489 (1986)Google Scholar
  27. 27.
    Sobiczewski, A., Patyk, Z., Cwiok, S.: Phys. Lett. B224, 1 (1989)Google Scholar
  28. 28.
    Münzenberg, G., Hessberger, F.P., Armbruster, P., Hofmann, S., Schmidt, K.-H., Berthes, G., Folger, H., Geissel, H., Keller, J.G., Lemmertz, P., Montoya, M., Poppensieker, K., Quint, A.B., Schött, H.-J., Zychor, I., Leino, M.E., Gollerthan, U.: Gesellschaft für Schwerionenforschung Darmstadt, Sci. Rep. 1985, GSI-86-1, 29 (1986)Google Scholar
  29. 29.
    Schmidt, K.-H., Sahm, C.-C., Pielenz, K., Clerc, H.-G.: Z. Phys. A — Atoms and Nuclei316, 19 (1984)Google Scholar
  30. 30.
    Poenaru, D.N., Ivascu, M.: J. Phys. (Paris)44, 791 (1983)Google Scholar
  31. 31.
    Leander, G.A., Möller, P., Nix, J.R., Howard, N.M.: Proceedings of the International Conference on Atomic Masses and Fundamental Constants. AMCO-7. Klepper, O. (ed.), p. 466. Technische Hochschule Darmstadt, 1984Google Scholar
  32. 32.
    Hessberger, F.P., Münzenberg, G., Hofmann, S., Folger, H., Poppensieker, K., Schmidt, K.-H., Reisdorf, W., Armbruster, P., Leino, M.E.: Fifth Int. Conf. on Nuclei far from Stability, Rousseau Lake, Sept. 1987, Am. Inst. Phys. Conf. Proc.164, 786 (1988)Google Scholar

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • U. W. Scherer
    • 1
  • W. Brüchle
    • 2
  • M. Brügger
    • 2
  • C. Frink
    • 1
  • H. Gäggeler
    • 3
  • G. Herrmann
    • 1
    • 2
  • J. V. Kratz
    • 1
  • K. J. Moody
    • 2
  • M. Schädel
    • 2
  • K. Sümmerer
    • 2
  • N. Trautmann
    • 1
  • G. Wirth
    • 2
  1. 1.Institut für KernchemieUniversität MainzFederal Republic of Germany
  2. 2.Gesellschaft für Schwerionenforschung mbHDarmstadtFederal Republic of Germany
  3. 3.Paul Scherrer InstitutVilligenSwitzerland

Personalised recommendations