Zeitschrift für Physik A Atoms and Nuclei

, Volume 314, Issue 2, pp 135–142 | Cite as

The level scheme of91Tc and theβ decay of91Ru(9/2+)

  • P. Komninos
  • E. Nolte
  • P. Blasi


The level scheme of91Tc has been studied by means of in-beamγ-ray spectroscopy in the irradiations of58Ni and54Fe targets by40Ca beams from the Munich MP tandem and the heavy ion post accelerator. A large number of positive as well as of negative parity yrast-levels with excitation energies up to 8 MeV has been established. The level scheme of91Tc has been compared with shell model claculations and a good agreement for all identified levels has been found.

In parallel investigations of the residual activities of the reaction40Ca→54Fe, theβ decay of the (9/2+ ground) state of91Ru has been investigated. Aβ decay scheme of91Ru(9/2+) has been established. The half-life of91Ru(9/2+) has been measured to be 9±1 s.


Spectroscopy Elementary Particle Excitation Energy Residual Activity Shell Model 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Lederer, C.M., Shirley, V.S.: Table of Isotopes. 7th Edn. New York: J. Wiley & Sons 1978Google Scholar
  2. 2.
    de Lange, J.C., Bron, J., Poelgeest, A., Verheul, H., Ewbank, W.B.: Z. Phys. A — Atoms and Nuclei279, 79 (1976)Google Scholar
  3. 3.
    Gloeckner, D.H., Macfarlane, M.H., Lawson, R.D., Serduke, F.J.D.: Phys. Lett.40B 597 (1972)Google Scholar
  4. 4.
    Gloeckner, D.H., Serduke, F.J.D.: Nucl. Phys. A220, 477 (1974)Google Scholar
  5. 5.
    Gross, R., Frenkel, A.: Nucl. Phys. A267, 85 (1976)Google Scholar
  6. 6.
    Serduke, F.J.D., Lawson, R.D., Gloeckner, D.H.: Nucl. Phys. A256, 45 (1976)Google Scholar
  7. 7.
    Fields, C.A., de Boer, F.W.N., Kraushaar, J.J., Pratt, W.W., Ristinen, R.A., Samuelson, L.E.: Z. Phys. A — Atoms and Nuclei295, 365 (1980)Google Scholar
  8. 8.
    Takagi, N.: Nucl. Phys. A346, 93 (1980)Google Scholar
  9. 9.
    Serduke, F.J.D., Henning, W.: Bull. Am. Phys. Soc.20, 73 (1975)Google Scholar
  10. 10.
    Diana, B.J., de Boer, F.W.N., Fields, C.A.: Z. Phys. A — Atoms and Nuclei306, 171 (1982)Google Scholar
  11. 11.
    Nolte, E., Geschonke, G., Berdermann, K., Oberschmidt, R., Zierl, R., Feil, M., Jahnke, A., Kress, M., Morinaga, H.: Nucl. Instrum. Methods158, 311 (1979)Google Scholar
  12. 12.
    Nolte, E., Geschonke, G., Berdermann, K., Kress, M., Schollmeier, W., Shida, Y., Morinaga, H.: IEEE Trans. Nucl. Sci.26, 3724 (1979)Google Scholar
  13. 13.
    Amusa, A., Lawson, R.D.: priv. com. 1982 and following paper in this volumeGoogle Scholar
  14. 14.
    Ogawa, K.: Private communication 1982Google Scholar
  15. 15.
    Seeger, P.A., Howard, W.M.: In: The 1975 Mass Predictions. Maripuu, S. (ed.). At. Data Nucl. Data Tables17, 476 (1976)Google Scholar
  16. 16.
    Hagberg, E., Hardy, J.C., Schmeing, H., Clifford, E.T.H., Koslowsky, V.T.: Nucl. Phys. A395, 152 (1983)Google Scholar
  17. 17.
    Arnell, S.E., Sjöberg, S., Skeppstedt, Ö., Wallander, E., Nilsson, A., Sawa, Z.P., Tinnas, G.: Z. Phys. A — Atoms and Nuclei289, 89 (1978)Google Scholar
  18. 18.
    Gallagher, P.W., Schneider, E.W., Walters, W.B.: Z. Phys. A — Atoms and Nuclei296, 81 (1980)Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • P. Komninos
    • 1
  • E. Nolte
    • 1
  • P. Blasi
    • 2
  1. 1.Fakultät für PhysikTechnische Universität MünchenGarchingFederal Republic of Germany
  2. 2.Department of PhysicsUniversity of FlorenceItaly

Personalised recommendations