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Nuclear structure inferred from heavy ion coulomb excitation

  • Douglas Cline
A. Invited Talks and Contributed Papers Presented Orally
Part of the Lecture Notes in Physics book series (LNP, volume 92)

Abstract

Even though the field of Coulomb excitation is 1/4 century old, it is only now being exploited to the fullest extent using the heavy-ion beams available from the newest accelerators. The examples I have shown demonstrate that multiple Coulomb excitation is a powerful probe of collective behaviour in low-lying nuclear states.

The phenomenological rigid rotor collective model is in excellent agreement with the data I have shown for strongly deformed nuclei. These data illustrate nicely that the unusual behaviour seen at high spin is just a consequence of Coriolis effects predicted to occur by this model. In contrast the results for the shape transitional nuclei are most surprising. Whereas we would expect the geometrical collective model to fail near to the shell closure we find quite the opposite. The E2 matrix elements are correlated by the simplest rigid triaxial rotor model, i.e. a model few people believe to be correct. This result is completely contrary to our current understanding of the structure of shape transitional nuclei. Clearly this surprising result warrants further experimental and theoretical investigation.

Keywords

High Spin State Rotational Band Gamma Band Coulomb Excitation Ground Band 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    McClelland, C.I. and C. Goodman, 1953, Phys.Rev.91:760.Google Scholar
  2. 2.
    Huus, T. and C. Zupunčič, 1953, Kgl.Danske Videnskab.Selskab, Mat.-Fys.Medd. 28:No.1.Google Scholar
  3. 3.
    Newton, J.O. and F.S. Stephens, 1958, Phys.Rev.Letts. 1:63.Google Scholar
  4. 4.
    Guidry, M.W. et al., 1978, Phys.Rev.Letts. 40:1016.Google Scholar
  5. 5.
    Cline, D., H.S. Gertzman, H.E. Gove, P.M.S. Lesser and J.J. Schwartz, 1969, Nucl.Phys. A133:445.Google Scholar
  6. 6.
    Lesser, P.M.S., D. Cline, P. Goode and R N. Horoshko, 1972, A190:597.Google Scholar
  7. 7.
    Cline, D., 1977, Proc. of International Conf. on The Physics of Medium-Light Nuclei, Ed. Blasi, Florence, Italy.Google Scholar
  8. 8.
    Vold, P.B., D. Cline, P. Russo, J.K. Sprinkle, R.P. Scharenberg and R.F. Mitchell, 1977, Phys.Rev.Letts. 39:325.Google Scholar
  9. 9.
    Schwalm, D., 1978, Proc. of the Conference on Present and Future Aspects of In-Beam Gamma-Ray SpectroscopyGoogle Scholar
  10. 10.
    Lee, I.Y., D. Cline, R.S. Simon, P.A. Butler, P. Colombani, M.W. Guidry, F.S. Stephens, R.M. Diamond, N.R. Johnson and E. Eichler, 1976, Phys.Rev.Letts. 37:420.Google Scholar
  11. 11.
    Habs, D. et al., 1978, unpublished.Google Scholar
  12. 12.
    Srebrny, J., D. Cline, C. Wu, F.S. Stephens, R.M. Diamond, D. Habs and H. Körner, 1978, unpublished.Google Scholar
  13. 13.
    Cline, D., I.Y. Lee, F.S. Stephens, R.M. Diamond, P.A. Butler, P. Colombani and R.S. Simon, 1976, unpublished.Google Scholar
  14. 14.
    Cline, D., I.Y. Lee, F.S. Stephens, M.M. Aleonard and M.A. Delaplanque, 1977, unpublished.Google Scholar
  15. 15.
    Baktash, C., D. Cline, H. Sang, J. Srebrny and G. Young, 1978, unpublished.Google Scholar
  16. 16.
    Cline, D., G. Dracoulis, J. Leigh, J.O. Newton, W.R. Phillips and S.Sie,1978,unpublished.Google Scholar
  17. 17.
    Alder, K. and F. Roesel, 1978, preprint.Google Scholar
  18. 17a.
    Roesel, F., J.X. Saladin and K. Alder, 1974, Comp.Phys.Commun. 8:35.Google Scholar
  19. 18.
    Winther, A. and J. de Boer, 1966, in Coulomb Excitation, edited by K. Alder and A. Winther, (Academic, New York) p.303.Google Scholar
  20. 19.
    de Boer, J., 1978, private communication.Google Scholar
  21. 20.
    Lesser, P.M.S., D. Cline, C.K. Cline and A. Bahnsen, 1974, Nucl.Phys. A223:563.Google Scholar
  22. 21.
    Metzger, F.R., 1970, Nucl.Phys. A148:362.Google Scholar
  23. 22.
    Guidry, M.W. et al., 1976, Nucl.Phys. A266:228.Google Scholar
  24. 23.
    Mottelson, B.R. and J.G. Valatin, 1960, Phys.Rev.Lett. 35:511.Google Scholar
  25. 24.
    Stephens, F.S. 1978, Proc. of the Conference on the I.B.A. Model, Italy.Google Scholar
  26. 25.
    Arima, A. and F. Iachello, 1978, Annals of Physics 111:201.Google Scholar
  27. 26.
    Stephens, F.S., 1975, Rev.Mod.Phys. 47:43.Google Scholar
  28. 27.
    Johnson, N.R., D. Cline, S.W. Yates, F.S. Stephens, L.L. Riedinger and R.M. Ronninger, 1978, Phys.Rev.Letts. 40:151.Google Scholar
  29. 28.
    Lee I.Y., D. Cline, R.S. Simon, P.A. Butler, P. Colombani, M.W. Guidry, F.S. Stephens, R.M. Diamond, N.R. Johnson and E. Eichler, 1976, Phys.Rev.Letts. 37:420.Google Scholar
  30. 29.
    Stephens, F.S. and R.S. Simon, 1972, Nucl.Phys. A183:257.Google Scholar
  31. 30.
    Flaum, C. and D. Cline, 1976, Phys.Rev. C14:1224.Google Scholar
  32. 31.
    Cline, D., 1976, Bull.Am.Phys.Soc. 21:962.Google Scholar
  33. 32.
    Ward, D., P. Colombani, I.Y. Lee, P.A. Butler, R.S. Simon, R.M. Diamond and F.S. Stephens, 1976, Nucl.Phys. A266:194.Google Scholar
  34. 33.
    Hartley, A.J., R. Chapman, G.D. Dracoulis, S. Flanagan, W. Gelletly and J.N. Mo, 1973, J.Phys.(London) A6:L60.Google Scholar
  35. 34.
    Davydov, A.S. and G.F. Filippov, 1958, Nucl.Phys. 8:237.Google Scholar
  36. 35.
    Davydov, A. and A.A. Chaban, 1960, Nucl.Phys. 20:499.Google Scholar
  37. 36.
    Faessler, A., W. Greiner and R.K. Sheline, 1965, Nucl.Phys. 70:33.Google Scholar
  38. 37.
    Wilets, L. and M. Jean, 1956, Phys.Rev. 102:788.Google Scholar
  39. 38.
    Kumar, K. and M. Baranger, 1968, Nucl.Phys. A122:273.Google Scholar
  40. 39.
    Gotz, U., H.C. Pauli, K. Alder and K. Junker, 1972, Nucl.Phys. A192:1.Google Scholar
  41. 40.
    Russo, P., D. Cline, J.K. Sprinkle, R.P. Scharemberg and P.B. Vold, 1977, Bull.Am.Phys. Soc. 22:545; 1978, preprint.Google Scholar
  42. 41.
    Sprinkle, J.K., D. Cline, P. Russo, R.P. Scharemberg and P.B. Vold, 1977, Bull.Am.Phys. Soc. 22:545; 1978, preprint.Google Scholar
  43. 42.
    Meyer-ter-Vehn, J., 1975, Nucl.Phys. A249:111.Google Scholar
  44. 43.
    Cline, D., 1973, J.Phys.Soc.Jpn.Suppl.34:377.Google Scholar
  45. 44.
    Droste, Ch., J. Dobaczewski, S.G. Rohozinski and J. Srebrny, 1978, private communication.Google Scholar
  46. 45.
    Cline, D., D. Russo, J.K. Sprinkle, I.Y. Lee, P.A. Butler, R.M. Diamond and F.S. Stephens, 1977, unpublished.Google Scholar
  47. 46.
    Lee, I.Y., D. Cline, P.A. Butler, R.M. Diamond, J.O. Newton, R.S. Simon and F.S. Stephens, 1977, Phys.Rev.Letts. 39:684.Google Scholar
  48. 47.
    Stelzer, K., et al, 1977, Phys.Letts. 70B:297.Google Scholar
  49. 48.
    Leander, G., 1976, Nucl.Phys. A273:286, and 1977, private communication.Google Scholar
  50. 49.
    Flynn, E.R. and D.G. Burke, 1977, private communication.Google Scholar
  51. 50.
    Casten, R.F. and J.A. Cizewski, 1978, submitted to Nuclear Physics.Google Scholar
  52. 51.
    Arima, A. and F. Iachello, 1978, Phys.Rev.Letts. 40:385.Google Scholar
  53. 52.
    Cizewski, J.A., et al., 1978, Phys.Rev.Letts. 40:167.Google Scholar
  54. 53.
    Lee, I.Y., N.R. Johnson, T.T. Sugihara, L.L. Riedinger and M.W. Guidry, 1978, Bull.Am. Phys.Soc. 23:555.Google Scholar
  55. 54.
    Lee, I.Y., D. Cline, F.S. Stephens and R.M. Diamond, 1977, unpublished.Google Scholar

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • Douglas Cline
    • 1
  1. 1.Nuclear Structure Research LaboratoryUniversity of RochesterRochesterUSA

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