Skip to main content
SpringerLink
Log in

High-spin isomers in W and Os nuclei; Competition betweenK-quantization and triaxiality

  • Nuclei
  • Published:
Zeitschrift für Physik A Atoms and Nuclei

Abstract

Results of a search for high-spin isomers in W and Os nuclei withN=104–107 are presented. Targets of48Ca and48, 50Ti are bombarded with a pulsed136Xe beam, and delayed gamma-radiation is detected by an array of NaI- and Ge-detectors. Several new isomers, with spin values up to ∼22h, are found in178,180W and180, 182, 183Os. Markedly different decay patterns and hindrance factors are found in the Os isotopes as compared to the expectations based on theK-selection rule valid for axially symmetric nuclei. The findings are ascribed to the onset of triaxial distortions.

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. Pedersen, J., Back, B.B., Bjørnholm, S., Borggreen, J., Diebel, M., Sletten, G., Azgui, F., Emling, H., Grein, H., Seiler-Clark, G., Spreng, W., Wollersheim, H.J., Walker, P., Åberg, S.: Phys. Rev. Lett.54, 306 (1985)

    Google Scholar 

  2. Khoo, T.L., Bernthal, F.M., Robertson, R.G.H., Warner, R.A.: Phys. Rev. Lett.37, 823 (1976); Khoo, T.L., Bernthal, F.M., Warner, R.A., Bertsch, G.G., Hamilton, G.: Phys. Rev. Lett.35, 1256 (1975)

    Google Scholar 

  3. Åberg, S.: Nucl. Phys.A306, 89 (1978)

    Google Scholar 

  4. Dudek, J.: Private communication (1984)

  5. Andersson, C.G., Krumlinde, J., Leander, G., Szymanski, Z.: Nucl. Phys.A 361, 147 (1981)

    Google Scholar 

  6. Bohr, A., Mottelson, B.R.: Nuclear structure. Vol. II, pp. 175–198. London: Benjamin 1975

    Google Scholar 

  7. Diebel, M.: Private communication (1984)

  8. Dors, C.L., Bernthal, F.M., Khoo, T.L., King, C.H., Borggreen, J., Sletten, G.: Nucl. Phys.A 314, 61 (1979)

    Google Scholar 

  9. Canty, K.J., Davison, N.E., Dohan, D.A., Yuen, P.: Nucl. Phys.A265, 1 (1976)

    Google Scholar 

  10. Faber, S.R.: Ph. D. Thesis, Michigan State University (1979)

  11. Bernthal, F.M., Back, B.B., Bakander, O., Borggreen, J., Pederson, J., Sletten, G.: Phys. Lett.74B, 211 (1978); and Pedersen, J., Bjørnholm, S., Borggreen, J., Kownacki, J., Sletten, G.: Phys. Scr.T5, 162 (1983)

    Google Scholar 

  12. Neskakis, A., Lieder, R.M., Sletten, G., Garrett, J.D.: Phys. Lett.118B, 49 (1982)

    Google Scholar 

  13. Burde, J., Diamond, R.M., Stephens, F.S.: Nucl. Phys.85, 481 (1966)

    Google Scholar 

  14. Lieder, R.M., Sletten, G., Borggreen, J., Pedersen, J.: Nucl. Phys.A 375, 291 (1982)

    Google Scholar 

  15. Dors, C.L.: Ph. D. Thesis, Michigan State University (1976)

  16. Neskakis, A., Lieder, R.M., Müller-Veggian, M., Beuscher, H., Davidson, W.F., Mayer-Böricke, C.: Nucl. Phys.A 261, 189 (1976)

    Google Scholar 

  17. Khoo, T.L., Løvhøjden, G.: Phys. Lett.67B, 271 (1977)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. The Niels Bohr Institute, Roskilde, Denmark

    J. Pedersen, B. B. Back, S. Bjørnholm, J. Borggreen & G. Sletten

  2. Gesellschaft für Schwerionenforschung, Darmstadt, Germany

    F. Azgui, H. Emling, H. Grein, G. Seiler-Clark, W. Spreng & H. J. Wollersheim

  3. Nuclear Structure Facility, Daresbury, UK

    P. Walker

Authors
  1. J. Pedersen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. B. B. Back
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. Bjørnholm
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. J. Borggreen
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. G. Sletten
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. F. Azgui
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. H. Emling
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. H. Grein
    View author publications

    You can also search for this author in PubMed Google Scholar

  9. G. Seiler-Clark
    View author publications

    You can also search for this author in PubMed Google Scholar

  10. W. Spreng
    View author publications

    You can also search for this author in PubMed Google Scholar

  11. H. J. Wollersheim
    View author publications

    You can also search for this author in PubMed Google Scholar

  12. P. Walker
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

On leave from Argonne National Laboratory, Argonne, IL 60439, USA

We wish to thank the staff of the UNILAC and H. Folger for delivering excellent beams and targets for the experiment. Stimulating discussions with M. Diebel, J. Dudek, T. Dóssing, S. Frauendorf and S. Åberg are gratefully acknowledged. This work has been supported by the Danish National Science Research Council and by the Office of Nuclear Science, U.S. Department of Energy.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Pedersen, J., Back, B.B., Bjørnholm, S. et al. High-spin isomers in W and Os nuclei; Competition betweenK-quantization and triaxiality. Z Physik A 321, 567–575 (1985). https://doi.org/10.1007/BF01432431

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01432431

PACS

Search

Navigation