Zeitschrift für Physik A Atoms and Nuclei

, Volume 319, Issue 2, pp 149–152 | Cite as

Half-life and configuration of the 1/2+ intruder state in203Bi

  • T. Lönnroth
  • J. Äystö
  • J. Ärje
  • J. Honkanen
  • V. Koponen
  • P. Taskinen
  • H. Hyvönen


The decay properties of theJπ=1/2+,Eexc=1,098 keV state in203Bi were studied. The state was populated via the204Pb(p, 2n) reaction and the activity was studied with the ion guide isotope separator on-line system IGISOL. The half-life of the 1/2+ state was measured to beT1/2=303 ±5 ms. From this value the partial half-lives of the three depopulating branches 1/2+ →7/2 (E3), 1/2+→5/2 (E3 +M2) and 1/2+→9/2 g.s. (M4) were deduced. Since all the transitions are configuration forbidden in first order, a detailed study of second-order shell-model configuration mixing could be performed.


Elementary Particle Decay Property Isotope Separator Intruder State 
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  1. 1.
    Heyde, K., Isacker, P. van, Waroquier, M., Wood, J.L., Meyer, R.A.: Phys. Rep.102, 291 (1983)Google Scholar
  2. 2.
    Astner, G., Alpsten, M.: Nucl. Phys.A 140, 643 (1970)Google Scholar
  3. 3.
    Alpsten, M., Astner, G.: Nucl. Phys.A 134, 407 (1969)Google Scholar
  4. 4.
    Alpsten, M., Astner, G.: Phys. Scr.5, 41 (1972)Google Scholar
  5. 5.
    Bergström, I., Herrlander, C.J., Thieberger, P., Blomqvist, J.: Phys. Rev.181, 1642 (1969)Google Scholar
  6. 6.
    Lönnroth, T., Fossan, D.B., Lovelock, D.M., Piel, W.F., Jr., Quader, M.A., Vajda, S., Chapuran, T.E., Warburton, E.K.: Bull. Am. Phys. Soc.28, 689 (1983); Phys. Rev.C (to be published)Google Scholar
  7. 7.
    Blomqvist, J.: State University of New York at Stony Brook, Nuclear Theory Group, Progress Report April 1969, p. 29 (not published)Google Scholar
  8. 8.
    Ellegaard, C., Julin, R., Kantele, J., Luontama, M., Poikolainen, T.: Nucl. Phys.A 302, 125 (1978)Google Scholar
  9. 9.
    Coenen, E., Deneffe, K., Huyse, M., Duppen, P. van: Proc. In-Beam Nuclear Spectroscopy Symposium, Debrecen, May 14–18, 1984Google Scholar
  10. 10.
    Braga, R.A., Western, W.R., Wood, J.L., Fink, R.W., Stone, R., Bingham, C.R., Riedinger, L.L.: Nucl. Phys.A 349, 61 (1980)Google Scholar
  11. 11.
    Lönnroth, T.: Z. Phys. A — Atoms and Nuclei307, 175 (1982)Google Scholar
  12. 12.
    Ärje, J., Äystö, J., Taskinen, P., Koponen, V., Hautojärvi, A., Vierinen, K., Valli, K.: Proc. Intern. Ion Engineering Congress (Kyoto, September 1983), p. 583Google Scholar
  13. 13.
    Äystö, J., Ärje, J., Koponen, V., Taskinen, P., Hyvönen, H., Hautojärvi, A., Vierinen, K.: Phys. Lett138 B, 369 (1984)Google Scholar
  14. 14.
    Ärje, J., Äystö, J., Koponen, V., Hyvönen, H., Taskinen, P.: (to be published)Google Scholar
  15. 15.
    Lederer, C.M., Shirley, V.S.: Table of Isotopes. 7th Edn. New York: Wiley 1978Google Scholar
  16. 16.
    Lönnroth, T., Baktash, C.: Phys. Scr.28, 459 (1983)Google Scholar
  17. 17.
    Alster, J.: Phys. Lett.25 B, 459 1967)Google Scholar
  18. 18.
    Hamamoto, I.: Phys. Rep.10 C, 63 (1974)Google Scholar
  19. 19.
    Rösel, F., Fries, H.M., Alder, K., Pauli, H.C.: At. Data Nucl. Data Tables21, 291 (1978)Google Scholar
  20. 20.
    Van Ruyven, J.J.: Thesis (Vrije Universiteit te Amsterdam, 1982)Google Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • T. Lönnroth
    • 1
  • J. Äystö
    • 1
  • J. Ärje
    • 1
  • J. Honkanen
    • 1
  • V. Koponen
    • 1
  • P. Taskinen
    • 1
  • H. Hyvönen
    • 1
  1. 1.Department of PhysicsUniversity of JyväskyläJyväskyläFinland

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