The European Physical Journal A - Hadrons and Nuclei

, Volume 26, Issue 2, pp 233–239

Energy systematics of low-lying Nilsson levels in odd-mass einsteinium isotopes

  • F. P. Heßberger
  • S. Antalic
  • B. Streicher
  • S. Hofmann
  • D. Ackermann
  • B. Kindler
  • I. Kojouharov
  • P. Kuusiniemi
  • M. Leino
  • B. Lommel
  • R. Mann
  • K. Nishio
  • S. Saro
  • B. Sulignano
Original Article

Abstract.

The decay of odd-mass mendelevium isotopes ( A = 247-255) has been studied by means of α-γ spectroscopy. Strong evidence for a small α branch in the decay of 253Md was found. γ lines in coincidence with α-decays of 247, 249, 251, 253Md have been observed for the first time. Levels in the einsteinium daughter nuclei were assigned on the basis of α-γ coincidence measurements. An energy systematics of the 7/2-[514] Nilsson level could be established, showing a correlation with the deformation parameter β2 of the corresponding nuclei. The results are compared with theoretical predictions

PACS.

23.60.+e α decay 27.90.+b 220 ⩽ A 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M. Leino, F.P. Heßberger, Annu. Rev. Nucl. Part. Sci. 54, 175 (2004).Google Scholar
  2. 2.
    R.B. Firestone, V.S. Shirley, C.M. Baglin, S.Y. Frank Chu, J. Zipkin, Table of Isotopes (John Wiley & Sons, Inc., New York, Chicester, Brisbane, Toronto, Singapore, 1996).Google Scholar
  3. 3.
    I. Ahmad, R.K. Sjoblom, A.M. Friedman, S.W. Yates, Phys. Rev. C 17, 2163 (1978).Google Scholar
  4. 4.
    I. Ahmad, R.R. Chasman, P.R. Fields, Phys. Rev. C 61, 044301 (2000).Google Scholar
  5. 5.
    K. Moody, R.W. Lougheed, J.F. Wild, R.J. Dougan, E.K. Hulet, R.W. Hoff, C.M. Henderson, R.J. Dupzyk, R.L. Hahn, K. Sümmerer, G.D. O'Kelly, G.R. Bethune, Nucl. Phys. A 563, 21 (1993).Google Scholar
  6. 6.
    B. Lommel, Gembalies-D. Datz, W. Hartmann, S. Hofmann, B. Kindler, J. Klemm, J. Kojouharova, S. Steiner, Nucl. Instrum. Methods Phys. Res. A 480, 16 (2002).Google Scholar
  7. 7.
    H. Folger, W. Hartmann, F.P. Heßberger, S. Hofmann, J. Klemm, G. Münzenberg, V. Ninov, W. Thalheimer, P. Armbruster, Nucl. Instrum. Methods Phys. Res. A 362, 65 (1995).Google Scholar
  8. 8.
    G. Münzenberg, W. Faust, S. Hofmann, P. Armbruster, K. Güttner, H. Ewald, Nucl. Instrum. Methods 161, 65 (1979).Google Scholar
  9. 9.
    S. Hofmann, W. Faust, G. Münzenberg, W. Reisdorf, P. Armbruster, K. Güttner, H. Ewald, Z. Phys. A 291, 53 (1979).Google Scholar
  10. 10.
    S. Hofmann, G. Münzenberg, Rev. Mod. Phys. 72, 737 (2000).Google Scholar
  11. 11.
    F.P. Heßberger, S. Hofmann, D. Ackermann, P. Cagarda, R.-D. Herzberg, I. Kojouharov, P. Kuusiniemi, M. Leino, R. Mann, Eur. Phys. J. A 22, 417 (2004).Google Scholar
  12. 12.
    F.P. Heßberger, S. Hofmann, I. Kojouharov, D. Ackermann, Eur. Phys. J. A 22, 253 (2004).Google Scholar
  13. 13.
    D.N. Poenaru, M. Ivascu, M. Mazila, J. Phys. (Paris), Lett. 41, 589 (1980).Google Scholar
  14. 14.
    E. Rurarz, Acta Phys. Pol. B 14, 917 (1983).Google Scholar
  15. 15.
    A.A. Chasman, I. Ahmad, A.M. Friedman, J.R. Erskine, Rev. Mod. Phys. 49, 833 (1977).Google Scholar
  16. 16.
    F.P. Heßberger, Proceedings of the Symposium on Nuclear Clusters: From Light Exotic to Superheavy Nuclei, edited by R. Jolos, W. Scheid (EP Systema, Debrecen, Hungary, 2003) p. 439.Google Scholar
  17. 17.
    S. Antalic, PhD Thesis, Comenius University Bratislava, Slovakia (2005).Google Scholar
  18. 18.
    F.P. Heßberger, S. Hofmann, G. Münzenberg, K.H. Schmidt, P. Armbruster, Nucl. Instrum. Methods Phys. Res. A 274, 522 (1989).Google Scholar
  19. 19.
    F.P. Heßberger, S. Hofmann, D. Ackermann, V. Ninov, M. Leino, G. Münzenberg, S. Saro, A. Lavrentev, A.G. Popeko, A.V. Yeremin, Ch. Stodel, Eur. Phys. J. A 12, 57 (2001).Google Scholar
  20. 20.
    F.P. Heßberger, S. Hofmann, D. Ackermann, A. Antalic, P. Cagarda, I. Kojouharov, P. Kuusiniemi, R. Mann, S. Saro, GSI Scientific Report GSI 2003, 2004-1 (2004) p. 3.Google Scholar
  21. 21.
    A. Chatillon, to be published in Eur. Phys. J. A.Google Scholar
  22. 22.
    Ch. Theisen, private communication, 2005.Google Scholar
  23. 23.
    F.P. Heßberger, S. Hofmann, V. Ninov, P. Armbruster, H. Folger, G. Münzenberg, H.J. Schött, S. Saro, A.G. Popeko, A.V. Yeremin, A.N. Andreyev, S. Saro, Z. Phys. A 359, 415 (1997).Google Scholar
  24. 24.
    S. Cwiok, S. Hofmann, W. Nazarewicz, Nucl. Phys. A 573, 356 (1995).Google Scholar
  25. 25.
    A. Parkhomenko, A. Sobiczewski, Acta Phys. Pol. B, 35, 2447 (2004).Google Scholar
  26. 26.
    P.R. Fields, I. Ahmad, R.F. Barnes, R.K. Sjoblom, E.P. Horwitz, Nucl. Phys. A 154, 407 (1970).Google Scholar
  27. 27.
    I. Ahmad, R.K. Sjoblom, R.F. Barnes, E.P. Horwitz, P.R. Fields, Nucl Phys. A 140, 141 (1970).Google Scholar
  28. 28.
    Y. Hatsukawa, T. Ohtsuki, K. Sueki, H. Nakahara, I. Kohno, M. Magara, N. Shinohara, H.L. Hall, R.A. Henderson, C.M. Gannet, J.A. Leyba, R.B. Chadwick, K.E. Gregorich, D. Lee, M.J. Nurmia, D.C. Hoffman, Nucl Phys. A 500, 90 (1989).Google Scholar
  29. 29.
    P. Möller, J.R. Nix, W.D. Myers, W.J. Swiatecki, At. Data Nucl. Data Tables 59, 185 (1995).Google Scholar
  30. 30.
    V. Ninov, F.P. Heßberger, S. Hofmann, H. Folger, G. Münzenberg, P. Armbruster, A.V. Yeremin, A.G. Popeko, M. Leino, S. Saro, Z. Phys. A 356, 11 (1996).Google Scholar
  31. 31.
    S. Hofmann, V. Ninov, F.P. Heßberger, H. Folger, G. Münzenberg, H.J. Schött, P. Armbruster, A.N. Andreyev, A.G. Popeko, A.V. Yeremin, M.E. Leino, R. Janik, S. Saro, M. Veselsky, GSI Scientific Report 1993, GSI 94-1 (1994) p. 64.Google Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • F. P. Heßberger
    • 1
  • S. Antalic
    • 2
  • B. Streicher
    • 2
  • S. Hofmann
    • 1
    • 3
  • D. Ackermann
    • 1
    • 4
  • B. Kindler
    • 1
  • I. Kojouharov
    • 1
  • P. Kuusiniemi
    • 1
    • 5
  • M. Leino
    • 5
  • B. Lommel
    • 1
  • R. Mann
    • 1
  • K. Nishio
    • 6
    • 1
  • S. Saro
    • 2
  • B. Sulignano
    • 1
    • 4
  1. 1.Gesellschaft für Schwerionenforschung mbHDarmstadtGermany
  2. 2.Department of Nuclear PhysicsComenius UniversityBratislavaSlovakia
  3. 3.Institut für KernphysikJohann Wolfgang Goethe-UniversitätFrankfurt am MainGermany
  4. 4.Institut für PhysikJohannes Gutenberg-UniversitätMainzGermany
  5. 5.Department of PhysicsUniversity of JyväskyläJyväskyläFinland
  6. 6.Japan Atomic Energy Research Institute (JAERI)Tokai, IbarakiJapan

Personalised recommendations