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The European Physical Journal A

, Volume 34, Issue 3, pp 325–339 | Cite as

Angular anisotropy of the fusion-fission and quasifission fragments

  • A. K. Nasirov
  • A. I. Muminov
  • R. K. Utamuratov
  • G. Fazio
  • G. Giardina
  • F. Hanappe
  • G. Mandaglio
  • M. Manganaro
  • W. Scheid
Regular Article - Theoretical Physics

Abstract.

The anisotropy in the angular distribution of the fusion-fission and quasifission fragments for the 16O + 238U , 19F + 208Pb and 32S + 208Pb reactions is studied by analyzing the angular-momentum distributions of the dinuclear system and compound nucleus which are formed after capture and complete fusion, respectively. The orientation angles of the axial symmetry axes of the colliding nuclei relative to the beam direction are taken into account for the calculation of the variance of the projection of the total spin onto the fission axis. It is shown that there is a large contribution of the quasifission fragments in the 32S + 208Pb reaction to the deviation of the experimental angular anisotropy from the statistical model results. Enhancement of anisotropy at low energies in the 16O + 238U reaction is connected with the quasifission of the dinuclear system having low temperature and relatively small effective moment of inertia.

PACS.

25.70.Jj Fusion and fusion-fission reactions 25.70.Lm Strongly damped collisions 25.85.Ge Charged-particle-induced fission 

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References

  1. 1.
    Yu. Ts. Oganessian, Phys. Rev. C 70, 064609 (2004).CrossRefADSGoogle Scholar
  2. 2.
    M.G. Itkis, Nucl. Phys. A 734, 136147 (2004).Google Scholar
  3. 3.
    G. Fazio, G. Giardina, A. Lamberto, A.I. Muminov, A.K. Nasirov, F. Hanappe, L. Stuttgé, Eur. Phys. J. A 22, 75 (2004).CrossRefADSGoogle Scholar
  4. 4.
    W.Q. Shen, Phys. Rev. C 36, 115 (1987).CrossRefADSGoogle Scholar
  5. 5.
    B.B. Back, Phys. Rev. C 32, 195 (1985)CrossRefADSGoogle Scholar
  6. 6.
    A. Diaz-Torres, Phys. Rev. C 74, 064601 (2006).CrossRefADSGoogle Scholar
  7. 7.
    D.J. Hinde, M. Dasgupta, J.R. Leigh, J.C. Mein, C.R. Morton, J.O. Newton, H. Timmers, Phys. Rev. C 53, 1290 (1996).CrossRefADSGoogle Scholar
  8. 8.
    D.J. Hinde, A.C. Berriman, M. Dasgupta, J.R. Leigh, J.C. Mein, C.R. Morton, J.O. Newton, Phys. Rev. C 60, 054602 (1999).CrossRefADSGoogle Scholar
  9. 9.
    B.B. Back, Phys. Rev. Lett. 50, 818 (1983).CrossRefADSGoogle Scholar
  10. 10.
    R. Vandenbosch, J.R. Huizenga, Nuclear Fission (Academic, New York, 1973).Google Scholar
  11. 11.
    H. Zhang, Z. Liu, J. Xu, K. Xu, J. Lu, M. Ruan, Nucl. Phys. A 512, 531 (1990).CrossRefADSGoogle Scholar
  12. 12.
    H. Zhang, Z. Liu, J. Nucl. Radiochem. Sci. 3, 99 (2002).Google Scholar
  13. 13.
    H. Rossner, J.R. Huizenga, W.U. Schröder, Phys. Rev. C 33, 560 (1986).CrossRefADSGoogle Scholar
  14. 14.
    R. Freifelder, M. Prakash, J.M. Alexander, Phys. Rep. 133, 315 (1986).CrossRefADSGoogle Scholar
  15. 15.
    B. John, S.K. Kataria, Phys. Rev. C 57, 1337 (1998).CrossRefADSGoogle Scholar
  16. 16.
    V.S. Ramamurtby, S.S. Kapoor, Phys. Rev. Lett. 54, 178 (1985)CrossRefADSGoogle Scholar
  17. 17.
    D. Vopkapić, B. Ivani\~sević, Phys. Rev. C 52, 1980 (1995).CrossRefADSGoogle Scholar
  18. 18.
    J. Tõke, Nucl. Phys. A 440, 327 (1985).CrossRefADSGoogle Scholar
  19. 19.
    A.V. Karpov, R.M. Hiryanov, A.V. Sagdeev, G.D. Adeev, J. Phys. G: Nucl. Part. Phys. 34, 255 (2007).CrossRefADSGoogle Scholar
  20. 20.
    V.A. Drozdov, D.O. Eremenko, O.V. Fotina, G. Giardina, F. Malaguti, S.Yu. Platonov, O.A. Yuminov, Nucl. Phys. A 734, 225 (2004).CrossRefADSGoogle Scholar
  21. 21.
    V.A. Drozdov, D.O. Eremenko, S.Yu. Platonov, O.V. Fotina, O.A. Yuminov, Phys. At. Nucl. 64, 179 (2001) (Yad. Fiz. 64, 221 (2001)).CrossRefGoogle Scholar
  22. 22.
    A.J. Sierk, Phys. Rev. C 33, 2039 (1986).CrossRefADSGoogle Scholar
  23. 23.
    I. Halpern, V.M. Strutinski, Proceedings of the Second United Nations International Conference on the Peaceful Uses of Atomic Energy, Geneva, 1958, Vol. 15 (United Nations, Geneva, 1958) p. 408.Google Scholar
  24. 24.
    J.J. Griffin, Phys. Rev. 116, 107 (1959).CrossRefADSGoogle Scholar
  25. 25.
    A.K. Nasirov, Nucl. Phys. A 759, 342 (2005).CrossRefADSGoogle Scholar
  26. 26.
    T. Murakami, C.-C. Sahm, R. Vandenbosch, D.D. Leach, A. Ray, M.J. Murphy, Phys. Rev. C 34, 1353 (1986).CrossRefADSGoogle Scholar
  27. 27.
    G. Fazio, Eur. Phys. J. A 19, 89 (2004).MATHCrossRefADSGoogle Scholar
  28. 28.
    G. Fazio, Phys. Rev. C 72, 064614 (2005). CrossRefADSMathSciNetGoogle Scholar
  29. 29.
    G. Giardina, Eur. Phys. J. A 8, 205 (2000).ADSCrossRefGoogle Scholar
  30. 30.
    A.K. Nasirov, G. Giardina, A.I. Muminov, W. Scheid, U.T. Yakhshiev, Proceedings of the Symposium on Nuclear Clusters: from Light Exotic to Superheavy Nuclei, Rauischholzhausen, Germany, 5-9 August, 2002, edited by R. Jolos, W. Scheid (EP Systema, Debrecen, Hungary, 2003) pp. 415--426Google Scholar
  31. 31.
    V.V. Volkov, Contributed Papers of Nucleus-Nucleus Collison II, Visby, 1985, edited by B. Jakobson, K. Aleclett, Vol. 1 (North-Holland, Amsterdam, 1985) p. 54Google Scholar
  32. 32.
    G. Fazio, Mod. Phys. Lett. A 20, 391 (2005).CrossRefADSGoogle Scholar
  33. 33.
    G. Audi, A.H. Wapstra, Nucl. Phys. A 595, 409 (1995).CrossRefADSGoogle Scholar
  34. 34.
    P. Moller, J.R. Nix, W.D. Myers, W.J. Swiatecki, At. Data Nucl. Data Tables 59, 185 (1995).CrossRefADSGoogle Scholar
  35. 35.
    G.G. Adamian, N.V. Antonenko, W. Scheid, Phys. Rev. C 69, 044601 (2004).CrossRefADSGoogle Scholar
  36. 36.
    P.J. Siemens, A.S. Jensen, Elements of Nuclei, Lecture Notes and Supplements in Physics (Addison-Wesley, Redwood City, California, 1987).Google Scholar
  37. 37.
    V.E. Viola, T. Sikkeland, Phys. Rev. 128, 767 (1962).CrossRefADSGoogle Scholar
  38. 38.
    Z. Liu, H. Zhang, J. Xu, Yu Qiao, X. Qian, C. Lin, Phys. Rev. C 54, 761 (1996).CrossRefADSGoogle Scholar
  39. 39.
    A. Gavron, Phys. Rev. Lett. 52, 589 (1983).CrossRefADSGoogle Scholar
  40. 40.
    K. Nishio, H. Ikezoe, Y. Nagame, M. Asai, K. Tsukada, S. Mitsuoka, K. Tsuruta, K. Satou, C.J. Lin, T. Ohsawa, Phys. Rev. Lett. 93, 162701 (2004).CrossRefADSGoogle Scholar
  41. 41.
    K. Hagino, unpublished.Google Scholar
  42. 42.
    K. Hagino, N. Rowley, A.T. Kruppa, Comput. Phys. Commun. 123, 143 (1999).MATHCrossRefADSGoogle Scholar
  43. 43.
    W. Reisdorf, M. Schädel, Z. Phys. A 343, 47 (1992).CrossRefADSGoogle Scholar
  44. 44.
    M.B. Tsang, D. Ardouin, C.K. Gelbke, W.G. Lynch, Z.R. Xu, B.B. Back, R. Betts, S. Saini, P.A. Baisden, M.A. McMahan, Phys. Rev. C 28, 747 (1983).CrossRefADSGoogle Scholar
  45. 45.
    H.A. Kramers, Physica 7, 284 (1940)MATHCrossRefADSMathSciNetGoogle Scholar
  46. 46.
    P. Grangé, Phys. Rev. C 27, 2063 (1983)CrossRefADSGoogle Scholar
  47. 47.
    P. Fröbrich, G.R. Tillack, Nucl. Phys. A 540, 353 (1992).CrossRefADSGoogle Scholar
  48. 48.
    A.R. Junghans, M. de Jong, H.-G. Clerc, A.V. Ignatyuk, G.A. Kudyaev, K.-H. Schmidt, Nucl. Phys. A 629, 635 (1998).CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2008

Authors and Affiliations

  • A. K. Nasirov
    • 1
    • 2
  • A. I. Muminov
    • 2
  • R. K. Utamuratov
    • 2
  • G. Fazio
    • 3
  • G. Giardina
    • 3
  • F. Hanappe
    • 4
  • G. Mandaglio
    • 3
  • M. Manganaro
    • 3
  • W. Scheid
    • 5
  1. 1.Flerov Laboratory of Nuclear ReactionsJINRDubnaRussia
  2. 2.Heavy Ion Physics DepartmentInstitute of Nuclear PhysicsTashkentUzbekistan
  3. 3.INFN, Sezione di CataniaDipartimento di Fisica dell'Università di MessinaMessinaItaly
  4. 4.Université Libre de BruxellesBruxellesBelgium
  5. 5.Institut für Theoretische Physik der Justus-Liebig-UniversitätGiessenGermany

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