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Zeitschrift für Physik A Atomic Nuclei

, Volume 334, Issue 1, pp 103–108 | Cite as

Nuclear radii of thorium isotopes from laser spectroscopy of stored ions

  • W. Kälber
  • J. Rink
  • K. Bekk
  • W. Faubel
  • S. Göring
  • G. Meisel
  • H. Rebel
  • R. C. Thompson
Physics with Stored Ions

Abstract

Isotope shifts and hyperfine splittings in optical transitions for atomic ions of the thorium isotopes227Th to230Th and232Th have been measured by laser spectroscopy on stored ions. From the isotope shift data, changes of the mean square charge radii are determined. A continuous increase of the charge radius with mass numberA is observed, in agreement with droplet model calculations. The results indicate that the odd-even staggering for Th is different from that one of the neighbouring isotones of Fr and Ra. There is some empirical evidence from systematics for an inversion of the staggering and the appearance of an octupole deformation atN ≦137. The hyperfine splitting for229Th for 3 electronic levels is given.

PACS

21.10.F 21.60 27.90 29.90 31.30.G 32.50.F 32.80.K 35.10.F 35.80 42.60.K 

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References

  1. 1.
    Schüler, P., Lauterbach, Ch., Agarwal, Y.K., De Boer, J., Blume, K.P., Butler, P.A., Euler, K., Fleischmann, Ch., Günther, C., Hauber, E., Maier, H.J., Marten-Tölle, M., Schandera, Ch., Simon, R.S., Tölle, R., Zeyen, P.: Phys. Lett.174B, 241 (1986)Google Scholar
  2. 2.
    Ward, D., Dracoulis, G.D., Leigh, J.R., Charity, R.J., Hinde, D.J., Newton, J.O.: Nucl. Phys.A406, 591 (1983)Google Scholar
  3. 3.
    Hardt, K., Schüler, P., Günther, C., Recht, J., Blume, K.P., Wilzek, H.: Nucl. Phys.A419, 34 (1984)Google Scholar
  4. 4.
    Bonin, W., Backe, H., Dahlinger, M., Glienke, S., Habs, D., Hanelt, E., Kankeleit, E., Schwartz, B.: Z. Phys. A — Atoms and Nuclei322, 59 (1985)Google Scholar
  5. 5.
    Leander, G.A., Sheline, R.K., Möller, P., Olanders, P., Ragnarsson, I., Sierk, A.J.: Nucl. Phys.A388, 452 (1982)Google Scholar
  6. 6.
    Nazarewicz, W., Olanders, P., Ragnarsson, I., Dudek, J., Leander, G.A., Möller, P., Ruchowska, E.: Nucl. Phys.A429, 269 (1984)Google Scholar
  7. 7.
    Robledo, L.M., Egido, J.L., Berger, J.F., Girod, M.: Phys. Lett.187B, 223 (1987)Google Scholar
  8. 8.
    Coc, A., Thibault, C., Touchard, F., Duong, H.T., Juncar, P., Liberman, S., Pinard, J., Carre, M., Lerme, J., Vialle, J.L., Büttgenbach, S., Mueller, A.C., Pesnelle, A., The Isolde Collaboration: Nucl. Phys.A468, 1 (1987)Google Scholar
  9. 9.
    Borchers, W., Neugart, R., Otten, E.W., Duong, H.T., Ulm, G., Wendt, K., The Isolde Collaboration: Hyperf. Interact.34, 25 (1987)Google Scholar
  10. 10.
    Ahmad, S.A., Klempt, W., Neugart, R., Otten, E.W., Reinhard, P.-G., Ulm, G., Wendt, K., The Isolde Collaboration: Nucl. Phys.A483, 244 (1988)Google Scholar
  11. 11.
    Otten, E.W.: Nuclear radii and moments of unstable isotopes: In: Treatise on heavy ion science: Nuclei far from stability. Bromley, D.A. (ed.), Vol. 8. New York: Plenum PressGoogle Scholar
  12. 12.
    Leander, G.A., Sheline, R.K.: Nucl. Phys.A413, 375 (1984)Google Scholar
  13. 13.
    Leander, G.A., Chen, Y.S.: Phys. Rev.C37, 2744 (1988)Google Scholar
  14. 14.
    Stukenbroeker, G.L., McNally, Jr., J.R.: J. Opt. Soc. Am.43, 36 (1953)Google Scholar
  15. 15.
    Engleman, Jr., R., Palmer, B.A.: J. Opt. Soc. Am.73, 694 (1983)Google Scholar
  16. 16.
    Engleman, Jr., R., Palmer, B.A.: J. Opt. Soc. Am.B1, 782 (1984)Google Scholar
  17. 17.
    Vernyi, E.A., Egorov, V.N.: Opt. Spectrosc.9, 367 (1960)Google Scholar
  18. 18.
    Egorov, V.N.: Opt. Spectrosc16, 301 (1964)Google Scholar
  19. 19.
    Gerstenkorn, S., Luc, P., Verges, J., Englekemeir, D.W., Gindler, J.E., Tomkins, F.S.: J. Phys. (Paris)35, 483 (1974)Google Scholar
  20. 20.
    Blaise, J., Steudel, A.: Z. Phys.209, 311 (1968)Google Scholar
  21. 21.
    Aufmuth, P., Heilig, K., Steudel, A.: At. Data Nucl. Data Tables37, 455 (1987)Google Scholar
  22. 22.
    Meisel, G., Bekk, K., Rebel, H., Schatz, G.: Hyperf. Interact.38, 723 (1987)Google Scholar
  23. 23.
    Fischer, E.: Z. Phys.156, 1 (1959)Google Scholar
  24. 24.
    Dehmelt, H.G.: Radiofrequency spectroscopy of stored ions. I: Storage: In: Advances in atomic and molecular physics. Bates, D.R., Estermann, I. (eds.), Vol. 3, p. 53. New York: Academic Press 1967Google Scholar
  25. 25.
    Wineland, D.J., Itano, Wayne M., Van Dyck, Jr., R.S.: Highresolution spectroscopy of stored ions: In: Advances in atomic and molecular physics. Sir Bates, D.R., Bederson, B. (eds.), Vol. 19, p. 135. New York: Academic Press 1983Google Scholar
  26. 26.
    Heilig, K., Steudel, A.: At. Data Nucl. Data Tables14, 613 (1974)Google Scholar
  27. 27.
    Wilson, M.: University London: Private communication 1988Google Scholar
  28. 28.
    Myers, W.D., Swiatecki, W.J.: Ann. Phys. (N.Y.)55, 395 (1969)Google Scholar
  29. 28a.
    Myers, W.D.: Droplet model of atomic nuclei, IFI. New York: Plenum 1977Google Scholar
  30. 29.
    Myers, W.D., Schmidt, K.H.: Nucl Phys.A410, 61 (1983)Google Scholar
  31. 30.
    Raman, S., Malarkey, C.H., Milner, W.T., Nestor, Jr., C.W., Stelson, P.H.: At. Data Nucl. Data Tables36, 1 (1987)Google Scholar
  32. 31.
    Bemis, Jr., C.E., McGowan, F.K., Ford, Jr., J.L.C., Milner, W.T., Robinson, R.L., Stelson, P.H., Leander, G.A., Reich, C.W.: Phys. Scr.38, 657 (1988)Google Scholar
  33. 32.
    Anselment, M., Bekk, K., Hanser, A., Hoeffgen, H., Meisel, G., Göring, S., Rebel, H., Schatz, G.: Phys. Rev.C34, 1052 (1986)Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • W. Kälber
    • 1
  • J. Rink
    • 1
  • K. Bekk
    • 1
  • W. Faubel
    • 2
  • S. Göring
    • 1
  • G. Meisel
    • 1
  • H. Rebel
    • 1
  • R. C. Thompson
    • 3
  1. 1.Kernforschungszentrum KarlsruheInstitut für KernphysikKarlsruheFederal Republic of Germany
  2. 2.Institut für RadiochemieKarlsruheFederal Republic of Germany
  3. 3.Blackett LaboratoryImperial CollegeLondonGreat Britain

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