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M1 Character of unresolved continuum transitions from X-ray multiplicity measurements

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

We have measured the X-ray multiplicities of the transitions deexciting the quasi-continuum region as a function of the input spin for deformed and transitional erbium isotopes obtained in (40Ar,xn) reactions. Combined withγ-ray angular distribution studies, these measurements clearly show the occurrence of a magnetic dipole component in the energy region 300–800keV. The spin dependence of this “bump” is quite different in deformed and transitional nuclei. In the latter case, a sudden increase in the quasi-continuumK electron multiplicity arises for spins higher than 35ħ and is strongly correlated to the occurrence of collective modes in these nuclei at the same spins. It is suggested to correspond to collective behavior of bands built on yrast states of single particle nature.

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References

  1. Diamond, R.M., Stephens, F.S.: Annu. Rev. Nucl. Part Sci.30, 185 (1980)

    Google Scholar 

  2. Deleplanque, M.A., Byrski, T.H., Diamond, R.M., Hübel, H., Stephens, F.S., Herskind, B., Bauer, R.: Phys. Rev. Lett.41, 1105 (1978)

    Google Scholar 

  3. Westerberg, L., Sarantites, D.G., Geoffrey, K., Dayras, R.A., Beene, J.R., Halbert, M.L., Hensley, D.C., Barker, J.H.: Phys. Rev. Lett.41, 96 (1978)

    Google Scholar 

  4. Feenstra, S.J., Klinken, J. van, Pijn, J.P., Janssens, R., Michel, C., Steyaert, J., Vervier, J., Cornelis, K., Huyse, M., Lhersonneau, G.: Phys. Lett. B80, 183 (1979)

    Google Scholar 

  5. Trautmann, W., Proetel, D., Häusser, D., Hering, W., Riess, G.: Phys. Rev. Lett.35, 1694 (1975)

    Google Scholar 

  6. Vivien, J.P., Schutz, Y., Beck, F.A., Bozek, E., Byrski, T., Gehringer, C., Merdinger, J.C.: Phys. Lett. B85, 325 (1979)

    Google Scholar 

  7. Hübel, H., Diamond, R.M., Stephens, F.S., Herskind, B., Bauer, R.: Z. Phys. A — Atoms and Nuclei297, 237 (1980)

    Google Scholar 

  8. Hübel, H., Smilansky, U., Diamond, R.M., Stephens, F.S., Herskind, B.: Phys. Rev. Lett.41, 791 (1978)

    Google Scholar 

  9. Newton, J.O., Sie, S.H.: Nucl. Phys. A334, 499 (1980)

    Google Scholar 

  10. Sujkowski, Z., Chmielewska, D., Janssens, R.V.F., Voigt, M.J.A. de: Phys. Rev. Lett.43, 998 (1979)

    Google Scholar 

  11. Deleplanque, M.A., Husson, J.P., Perrin, N., Stephens, F., Bastin, G., Schück, C., Thibaud, J.P., Hildingsson, L., Hjorth, S., Johnsson, A., Lindblad, T.: Phys. Rev. Lett.43, 1001 (1979)

    Google Scholar 

  12. Aguer, P., Bastin, G., Péghaire, A., Thibaud, J.P., Perrin, N., Sergolle, H., Hubert, Ph.: Phys. Scr.24, 140 (1981)

    Google Scholar 

  13. Nguyen, L.: Thèse, Orsay (1982)

  14. Hubert, Ph., Leccia, F., Liotta, R., Mennrath, P., Villard, M.M.: J. Phys. (Paris), Coll.41–10, 139 (Intern. Conf. on Nucl. Behaviour at High Angular Momentum, Strasbourg) (1980)

  15. Chen, Y.S., Hamamoto, I.: Phys. Scr.24, 763 (1981)

    Google Scholar 

  16. Chen, Y.S., Riedinger, L.L., Leander, G.: Phys. Lett. B113, 124 (1982)

    Google Scholar 

  17. Körner, H.J., Hillis, D.L., Roulet, C.P., Aguer, P., Ellegaard, C., Fossan, D.B., Habs, D., Neiman, M., Stephens, F.S., Diamond, R.M.: Phys. Rev. Lett.43, 490 (1979)

    Google Scholar 

  18. Tjøm, P.O., Espe, J., Hagemann, G.B., Herskind, B., Hillis, D.L.: Phys. Lett. B72, 439 (1978)

    Google Scholar 

  19. Folkmann, F., Garrett, J.D., Hagemann, G., Harakeh, M.N., Herskind, B., Hillis, D.L., Ogaza, S., Emling, H., Grosse, E., Schwalm, D., Simon, R.S., Tjöm, P.O.: Nucl. Phys. A361, 242 (1981)

    Google Scholar 

  20. Van der Werf, S.Y.: Nucl. Instrum. Methods153, 221 (1978)

    Google Scholar 

  21. Habs, D., Stephens, F.S., Diamond, R.M.: L.B.L. Report 3.79/130 (1979)

  22. Data reduction and error analysis for the physical sciences. New York: McGraw Hill 1969

  23. Foin, C., André, S., Barnéoud, D., Bastin, G., Péghaire, A., Thibaud, J.P.: Z. Phys. A — Atoms and Nuclei305, 81 (1982)

    Google Scholar 

  24. Beck, F., Dudek, J., Haas, B., Merdinger, J.C., Schutz, Y., Vivien, J.P., Hubert, Ph., Dassié, D., Bastin, G., Nguyen, L., Thibaud, J.P., Nazarewicz, W.: Z. Phys. A — Atoms and Nuclei319, 119 (1984)

    Google Scholar 

  25. Sarantites, D.G., Dilmanian, F.A., Jaäskeläinen, M., Puchta, H., Woodward, R., Beene, J.R., Barker, J.H., Halbert, M.L., Hattula, T., Hensley, D.C., Lee, T.Y., Milner, W.T., Plasil, F., Gaardhoje, J.J., Garrett, J.D., Hagemann, G.B., Herskind, B., Nolan, P., Sletten, G.: Conf. On High Angular Momentum Properties of Nuclei, Oak-Ridge, 417 (1982)

  26. Andersson, C.G., Bengtsson, R., Bengtsson, T., Krumlinde, J., Leander, G., Neergärd, K., Olanders, P., Pinston, J.A., Ragnarsson, I., Szymanski, Z., Aberg, S.: Phys. Scr.24, 266 (1981); Leander, G.A., Frauendorf, S., May, F.R.: Conf. on High angular momentum properties of nuclei, Oak-Ridge, 281 (1982); Chen, Y.S., Leander, G.A.: Conf. on High angular momentum prop. of nuclei, Oak-Ridge, 327 (1982)

    Google Scholar 

  27. Aguer, P., Bastin, G., Nguyen, L., Thibaud, J.P., Sergolle, H., Gizon, J.: Proc. Intern. Winter Meeting of Nuclear Physics, Bormio (1982)

  28. Cormier, T.M., Cormier, P.M., Herman, H., Nicolis, N.G., Stwertka, P.M.: Phys. Rev. Lett.51, 542 (1983)

    Google Scholar 

  29. Simpson, J., Riley, M.A., Cresswell, J.R., Forsyth, P.O., Howe, D., Nyako, B.M., Sharpey-Schafer, J.F., Bacelar, J., Garrett, J.O., Hagemann, G.B., Herskind, B., Holm, A.: Phys. Rev. Lett.53, 648 (1984)

    Google Scholar 

  30. Bohr, A., Mottelson, B.R.: J. Phys. Soc. Jpn. Suppl.44, 157 (1978)

    Google Scholar 

  31. Andersson, C.G., Hellström, G., Leander, G., Ragnarsson, I., Aberg, S., Krumlinde, J., Nilsson, S.G., Szymanski, Z.: Nucl. Phys. A309, 141 (1978); Neergard, K., Pashkevich, V.V., Frauendorf, S.: Nucl. Phys. A262, 61 (1976); Neergard, K., Toki, H., Ploszajczak, M., Faessler, A.: Nucl. Phys. A287, 48 (1977)

    Google Scholar 

  32. Cwiok, S., Mikhailov, I.N., Briançon, Ch.: Z. Phys. A — Atoms and Nuclei314, 337 (1983)

    Google Scholar 

  33. Aguer, P., Bastin, G., Thibaud, J.P., Boutet, J., Barnéoud, D., Foin, C.: Z. Phys. A — Atoms and Nuclei285, 59 (1978); Radford, D.C., Rosenthal, M.S., Parker, P.O., Cizewski, J.A., Thomas, J.H., Haas, B., Beck, F.A., Byrski, T., Merdinger, J.C., Nourredine, A., Schutz, Y., Vivien, J.P., Dionisio, J.S., Vieu, Ch.: Phys. Lett. B126, 24 (1983)

    Google Scholar 

  34. Nguyen, L., Sergolle, H., Aguer, P., Auger, G., Bastin, G., Lönnroth, T., Thibaud, J.P., Thomé, L.: Z. Phys. A — Atoms and Nuclei309, 207 (1983)

    Google Scholar 

  35. Bohr, A., Mottelson, B.R.: Nuclear structure. Vol. 2. New York: Benjamin 1972

    Google Scholar 

  36. Khoo, T.L., Borggreen, J., Chowdhury, P., Ahmad, I., Smither, R.K., Faber, S.R., Daly, J.P., Dors, C.L., Wilson, J.: Phys. Scr.24-1-2, 283 (1981)

    Google Scholar 

  37. Bohr, A., Mottelson, B.R.: Phys. Scr.24-1-2, 71 (1981)

    Google Scholar 

  38. Balbutsev, E.B., Vaishvila, Z., Mikhailov, I.N.: J.I.N.R. E4, 281 (1981)

    Google Scholar 

  39. Villard, M.M., Hubert, Ph., Liotta, R.J.: Phys. Scr.26, 201 (1982)

    Google Scholar 

  40. Arve, P., Chen, Y.S., Leander, G.A.: Phys. Scr. T5, 157 (1983)

    Google Scholar 

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Authors and Affiliations

  1. C.S.N.S.M., Orsay, France

    J. P. Thibaud, P. Aguer, G. Bastin & L. Nguyen

  2. I.P.N., Orsay, France

    N. Perrin & H. Sergolle

  3. I.S.N., Grenoble, France

    J. Gizon

  4. C.E.N.B.G., Gradignan, France

    Ph. Hubert & M. M. Villard

Authors
  1. J. P. Thibaud
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  2. P. Aguer
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  3. G. Bastin
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  4. L. Nguyen
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  5. N. Perrin
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  6. H. Sergolle
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  7. J. Gizon
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  8. Ph. Hubert
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  9. M. M. Villard
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Thibaud, J.P., Aguer, P., Bastin, G. et al. M1 Character of unresolved continuum transitions from X-ray multiplicity measurements. Z Physik A 321, 275–286 (1985). https://doi.org/10.1007/BF01493449

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  • DOI: https://doi.org/10.1007/BF01493449

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