Skip to main content
SpringerLink
Log in

Spin-flipβ − decay of even-even deformed nuclei110Ru and112Ru

  • Published:
Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Neutron-rich nuclides110Ru and112Ru produced in symmetric fission of238U by 20 MeV protons have been studied at the IGISOL facility by means ofβ-ray,γ-ray and conversion electron spectroscopy. A total of 12 and 6γ-transitions were observed in the decays of110Ru and112Ru, respectively. Multipolarities were determined for a few transitions. The beta decay half-life was determined to be 11.6±0.6 s for110Ru and 1.75±0.07 s for112Ru. As a side product, a new value of 2.1±0.3 s for theβ half-life of the112Rh 1+ state was obtained. The decay energy measured with the plastic scintillator was 2.81 ±0.05 MeV for110Ru and 4.52 ±0.08 MeV for112Ru. The beta decay schemes of110Ru and112Ru isotopes indicate that the main fraction of their beta strength resides in two 0+→1+ spin-flip transitions with their logf t values between 4.4 and 4.7. The decay energies and the energies of the 1+ GT states are compared with the macroscopic-microscopic model calculations. The observed GT-strengths are discussed in the framework of the deformed single-particle model.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Bohr, A., Mottelson, B.R.: Nuclear structure. Vol. II, Nuclear deformations, p. 306. New York: Benjamin 1975

    Google Scholar 

  2. Sood, P.C., Sheline, R.K.: At. Data Nucl. Data Tables43, 259 (1989)

    Google Scholar 

  3. Koponen, V., Äystö, J., Honkanen, J., Jauho, P., Penttilä, H., Suhonen, J., Taskinen, P., Rykaczewski, K., Zylicz, J., Davids, C.N.: Z. Phys. A — Atomic Nuclei333, 339 (1989)

    Google Scholar 

  4. Suhonen, J., Taigel, T., Faessler, A.: Nucl. Phys. A486, 91 (1988)

    Google Scholar 

  5. Äystö, J., Jauho, P.P., Janas, Z., Jokinen, A., Parmonen, J.M., Penttilä, H., Taskinen, P., Béraud, R., Duffait, R., Emsallem, A., Meyer, J., Meyer, M., Redon, N., Leino, M.E., Eskola, K., Dendooven, P.: Nucl. Phys. A515, 365 (1990)

    Google Scholar 

  6. Taskinen, P., Penttilä, H., Äystö, J., Dendooven, P., Jauho, P., Jokinen, A., Yoshii, M.: Nucl. Instrum. Methods281, 539 (1989)

    Google Scholar 

  7. Penttilä, H., Taskinen, P., Jauho, P., Koponen, V., Davids, C.N., Äystö, J.: Phys. Rev. C38, 931 (1988)

    Google Scholar 

  8. Äystö, J.: In: Nuclear weak processes and nuclear structure. Morita, M., Ejiri, H., Ohtsuko, H., Sato, T. (eds.), p. 505. Singapore: World Scientific 1989

    Google Scholar 

  9. Towner, I.S.: Nucl. Phys. A444, 402 (1985)

    Google Scholar 

  10. Davids, C.N., Norman, E.B., Pardo, R.C., Parks, L.A.: In: Proceedings of the 3rd international conference on nuclei far from stability, Cargése, France, 1976. Klapisch, R. (ed.), p. 590. Geneva, CERN 76-13

  11. Peker, L.K.: Nucl. Data Sheets59, 767 (1990)

    Google Scholar 

  12. Müller, H.-W., Chmielewska, C.: Nucl. Data Sheets48, 663 (1986)

    Google Scholar 

  13. Tamura, T., Matumoto, Z., Ohshima, M.: Nucl. Data Sheets32, 497 (1981)

    Google Scholar 

  14. Parmonen, J.H., Janas, Z., Trzaska, W.H., Äystö, J., Kantele, J., Jauho, P.P., Jokinen, A., Penttilä, H.: Nucl. Instrum. Methods (in press)

  15. Gelder, P. De, Jacobs, E., Frenne, D. De: Nucl. Data Sheets38, 545 (1983)

    Google Scholar 

  16. Franz, G., Herrmann, G.: J. Inorg. Nucl. Chem.40, 945 (1978)

    Google Scholar 

  17. Äystö, J., Davids, C.N., Hattula, J., Honkanen, J., Honkanen, K., Jauho, P., Julin, R., Juutinen, S., Kumpulainen, J., Lönnroth, T., Pakkanen, A., Passoja, A., Penttilä, H., Takinen, P., Verho, E., Virtanen, A., Yoshii, M.: Nucl. Phys. A480, 104 (1988)

    Google Scholar 

  18. Kantele, J.: Nucl. Instrum. Methods275, 149 (1989)

    Google Scholar 

  19. Rösel, F., Fries, H.M., Alder, K., Pauli, H.C.: At. Data Nucl. Data Tables21, 91 (1978)

    Google Scholar 

  20. Graefenstedt, M., Jürgens, P., Keyser, U., Münnich, F., Schreiber, F., Balog, K., Winkelmann, T., Faust, H.R.: Z. Phys. A — Atomic Nuclei334, 239 (1989)

    Google Scholar 

  21. Pierson, W.R., Griffin, H.C., Coryell, C.D.: Phys. Rev.127, 1708 (1962)

    Google Scholar 

  22. Suhonen, J.: Private communication

  23. Dobaczewski, J., Nazarewicz, W., Plochocki, A., Rykaczewski, K., Zylicz, J.: Z. Phys. A — Atomic Nuclei329, 267 (1988)

    Google Scholar 

  24. Cwiok, S., Dudek, J., Nazarewicz, W., Skalski, J., Werner, T.: Comp. Phys. Comm.46, 379 (1987)

    Google Scholar 

  25. Myers, W.D., Swiatecki, W.: Nucl. Phys.81, 1 (1966); Ark. Fys.36, 343 (1967)

    Google Scholar 

  26. Möller, P., Nix, J.R.: At. Data Nucl. Data Tables26, 165 (1981)

    Google Scholar 

  27. Jensen, A.S., Hansen, P.G., Jonson, B.: Nucl. Phys. A431, 393 (1984)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Physics, University of Jyväskylä, SF-40351, Jyväskylä, Finland

    A. Jokinen, J. Äystö, P. P. Jauho, J. M. Parmonen, H. Penttilä & P. Taskinen

  2. I.K.S., Katholieke Universiteit Leuven, B-3001, Leuven, Belgium

    P. Dendooven

  3. Department of Physics, University of Helsinki, SF-00170, Helsinki, Finland

    K. Eskola & M. E. Leino

  4. Department of Experimental Physics, Warsaw University, PL-00681, Warsaw, Poland

    Z. Janas & K. Rykaczewski

Authors
  1. A. Jokinen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. Äystö
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. P. Dendooven
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. K. Eskola
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Z. Janas
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. P. P. Jauho
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. M. E. Leino
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. J. M. Parmonen
    View author publications

    You can also search for this author in PubMed Google Scholar

  9. H. Penttilä
    View author publications

    You can also search for this author in PubMed Google Scholar

  10. K. Rykaczewski
    View author publications

    You can also search for this author in PubMed Google Scholar

  11. P. Taskinen
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Supported by the Academy of Finland

The authors would like to thank Dr. Jouni Suhonen for fruitful discussions and for the work he has done on pnQRPA-calculations. This work has been financially supported by the Academy of Finland. One of us (M.L.) is indebted to the Wihuri Foundation for a travel grant and two of us (Z.J. and K.R.) acknowledge the support from the Polish Ministry of National Education.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Jokinen, A., Äystö, J., Dendooven, P. et al. Spin-flipβ − decay of even-even deformed nuclei110Ru and112Ru. Z. Physik A - Hadrons and Nuclei 340, 21–28 (1991). https://doi.org/10.1007/BF01284476

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01284476

PACS

Search

Navigation