Advertisement

The European Physical Journal A

, Volume 31, Issue 2, pp 185–194 | Cite as

Excitation functions of fusion reactions and neutron transfer in the interaction of 6He with 197Au and 206Pb

  • Yu. E. Penionzhkevich
  • R. A. Astabatyan
  • N. A. Demekhina
  • G. G. Gulbekian
  • R. Kalpakchieva
  • A. A. Kulko
  • S. M. Lukyanov
  • E. R. Markaryan
  • V. A. Maslov
  • Yu. A. Muzychka
  • Yu. Ts. Oganessian
  • R. V. Revenko
  • N. K. Skobelev
  • Yu. G. Sobolev
  • D.A.Testov
  • T. Zholdybaev
Regular Article - Nuclear Structure and Reactions

Abstract.

Excitation functions for evaporation residues in the reactions 197Au(6He, xn)203-xnTl, x = 2-7, and 206Pb(6He, 2n)210Po, as well as for neutron transfer reactions for the production of 196Au and 198Au in the interaction of 6He with 197Au were measured. The 6He beam was obtained from the accelerator complex for radioactive beams DRIBs (JINR). The maximum energy of the beam was about 10AMeV and the intensity reached 2×107pps. The stacked-foil activation technique was used directly in the beam extracted from the cyclotron or in the focal plane of the magnetic spectrometer MSP-144. The identification of the reaction products was done by their radioactive γ- or α-decay. The fusion reaction with the evaporation of two neutrons was characterized by an increase in the cross-section compared to statistical model calculations. The analysis of the data in the framework of the statistical model for the decay of excited nuclei, which took into account the sequential fusion of 6He has shown good agreement between the experimental and the calculated values of the cross-sections in the case of sub-Coulomb-barrier fusion in the 206Pb + 6He reaction. An unusually large cross-section was observed below the Coulomb barrier for the production of 198Au in the interaction of 6He with 197Au. Possible mechanisms of formation and decay of transfer reaction products are discussed.

PACS.

25.60.-t Reactions induced by unstable nuclei 25.60.Pj Fusion reactions 25.60.Je Transfer reactions 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M. Beckerman, Rep. Prog. Phys. 51, 1047 (1988) and references therein.CrossRefADSGoogle Scholar
  2. 2.
    R.A. Broglia, C.H. Dasso, S. Landowne, A. Winther, Phys. Rev. C 27, 2433R (1983) and references therein.CrossRefADSGoogle Scholar
  3. 3.
    Yu.E. Penionzhkevich, V.I. Zagrebaev, S.M. Lukyanov, R. Kalpakchieva, Phys. Rev. Lett. 96, 162 (2003).Google Scholar
  4. 4.
    S. Saha, Y.K. Agarwal, Nucl. Phys. A 601, 251 (1996).CrossRefADSGoogle Scholar
  5. 5.
    J.F. Liang, C. Signorini, Int. J. Mod. Phys. E 14, 1121 (2005).CrossRefADSGoogle Scholar
  6. 6.
    L.F. Canto, P.R.S. Gomes, R. Donangelo, M.S. Hussein, Phys. Rep. 424, 1 (2006).CrossRefADSGoogle Scholar
  7. 7.
    Yu.E. Penionzhkevich, Nucl. Phys. A 588, 259c (1995)CrossRefADSGoogle Scholar
  8. 8.
    J.J. Kolata, V. Guimaraes, D. Peterson, P. Santi, R. White-Stevens, P.A. DeYoung, G.F. Peaslee, B. Hughey, B. Atalla, M. Kern, P.L. Jolivette, J.A. Zimmerman, M.Y. Lee, F.D. Becchetti, E.F. Aguilera, E. Martinez-Quiroz, J.D. Hinnefeld, Phys. Rev. Lett. 81, 4580 (1998).CrossRefADSGoogle Scholar
  9. 9.
    M. Trotta, J.L. Sida, N. Alamanos, A. Andreyev, F. Auger, D.L. Balabanski, C. Borcea, N. Coulier, A. Drouart, D.J.C. Durand, G. Georgiev, A. Gillibert, J.D. Hinnefeld, M. Huyse, C. Jouanne, V. Lapoux, A. Lepine, A. Lumbroso, F. Marie, A. Musumarra, G. Neyens, S. Ottini, R. Raabe, S. Ternier, P. Van Duppen, K. Vyvey, C. Volant, R. Wolski, Phys. Rev. Lett. 84, 2342 (2000).CrossRefADSGoogle Scholar
  10. 10.
    R. Raabe, J.L. Sida, J.L. Charvet, N. Alamanos, C. Angulo, J.M. Casandjian, S. Courtin, A. Drouart, D.J.C. Durand, P. Figuera, A. Gillibert, S. Heinrich, C. Jouanne, V. Lapoux, A. Lepine-Szily, A. Musumarra, L. Nalpas, D. Pierroutsakou, M. Romoli, K. Rusek, M. Trotta, Nature 431, 823 (2004).CrossRefADSGoogle Scholar
  11. 11.
    A. Di Pietro, P. Figuera, F. Amorini, C. Angulo, G. Cardella, S. Cherubini, T. Davinson, D. Leanza, J. Lu, H. Mahmud, M. Milin, A. Musumarra, A. Ninane, M. Papa, M.G. Pellegriti, R. Raabe, F. Rizzo, C. Ruiz, A.C. Shotter, N. Soic, S. Tudisco, L. Weissman, Phys. Rev. C 69, 044613 (2004).CrossRefADSGoogle Scholar
  12. 12.
    A. Navin, V. Tripathi, Y. Blumenfeld, V. Nanal, C. Simenel, J.M. Casandjian, G. de France, R. Raabe, D. Bazin, A. Chatterjee, M. Dasgupta, S. Kailas, R.C. Lemmon, K. Mahata, R.G. Pillay, E.C. Pollacco, K. Ramachandran, M. Rejmund, A. Shrivastava, J.L. Sida, E. Tryggestad, Phys. Rev. C 70, 044601 (2004).CrossRefADSGoogle Scholar
  13. 13.
    E.F. Aguilera, J.J. Kolata, F.M. Nunes, F.D. Becchetti, P.A. DeYoung, M. Goupell, V. Guimaraes, B. Hughey, M.Y. Lee, D. Lizcano, E. Martinez-Quiroz, A. Nowlin, T.W. O'Donnell, G.F. Peaslee, D. Peterson, P. Santi, R. White-Stevens, Phys. Rev. Lett. 84, 5058 (2000)CrossRefADSGoogle Scholar
  14. 14.
    J.P. Bychowski, P.A. DeYoung, B.B. Hilldore, J.D. Hinnefeld, A. Vida, F.D. Becchetti, J. Lupton, T.W. O'Donnell, J.J. Kolata, G. Rogachev, M. Hencheck, Phys. Lett. B 596, 26 (2004).CrossRefADSGoogle Scholar
  15. 15.
    Yu.Ts. Oganessian, G.G. Gulbekian, in Proceedings of the International Conference Nuclear Shells - 50 Years, edited by Yu.Ts. Oganessian, R. Kalpakchieva (World Scientific, Singapore, 2000) p. 61.Google Scholar
  16. 16.
    Yu.E. Penionzhkevich, R.A. Astabatyan, N.A. Demekhina, Z. Dlouhy, R. Kalpakchieva, A.A. Kulko, S.P. Lobastov, S.M. Lukyanov, E.R. Markaryan, V.A. Maslov, Yu.A. Muzychka, Yu.Ts. Oganessian, D.N. Rassadov, N.K. Skobelev, Yu.G. Sobolev, V.Yu. Ugryumov, J. Vincour, T. Zholdybaev, Phys. Part. Nuclei, Lett. 3, no. 6, 38 (2006).Google Scholar
  17. 17.
    V.D. Kuznetsov, G.V. Mishinsky, V.I. Arbuzov, D.V. Kamanin, S.V. Mitrofanov, V.I. Zhemenik, in Scientific report FLNR 2001-2002, edited by A.G. Popeko (JINR, Dubna, 2003) pp. 223, 224. Google Scholar
  18. 18.
    R.A. Astabatyan, R.L. Kavalov, A. Kugler, I.V. Kuznetsov, V.F. Kushniruk, S.P. Lobastov, S.M. Lukyanov, E.R. Markaryan, V.A. Maslov, L. Mikhailov, Yu.E. Penionzhkevich, N.O. Poroshin, N.K. Skobelev, V.I. Smirnov, Yu.G. Sobolev, V.Yu. Ugryumov, Bull. Russ. Acad. Sci. Phys. 67, 756 (2003).Google Scholar
  19. 19.
    N.K. Skobelev, R. Kalpakchieva, R.A. Astabatyan, J. Vincour, A.A. Kulko, S.P. Lobastov, S.M. Lukyanov, E.R. Markaryan, V.A. Maslov, Yu.E. Penionzhkevich, Yu.G. Sobolev, V.Yu. Ugryumov, Nucl. Instrum. Methods B 227, 471 (2005).CrossRefADSGoogle Scholar
  20. 20.
    http://dnr080.jinr.ru/lise/Google Scholar
  21. 21.
    J. Frana, Radioanal. Nucl. Chem. 257, 583 (2003).CrossRefGoogle Scholar
  22. 22.
    http://nucleardata.nuclear.lu.se/NuclearData/ toi/.Google Scholar
  23. 23.
    Z.G. Gritchenko, T.P. Makarova, Yu.Ts. Oganessian, Yu.E. Penionzhkevich, A.V. Stepanov, Phys. At. Nuclei 10, 929 (1969) (in Russian).Google Scholar
  24. 24.
    Yu.A. Muzychka, B.I. Pustylnik, Phys. At. Nuclei 45, 90 (1987).Google Scholar
  25. 25.
    A.V. Ignatyuk, G.N. Smirenkin, A.S. Tishin, Yad. Fiz. 21, 485 (1975) [Sov. J. Nucl. Phys. 21, 255 (1975)].Google Scholar
  26. 26.
    Yu.E. Penionzhkevich, Yu.A. Muzychka, S.M. Lukyanov, R. Kalpakchieva, N.K. Skobelev, V.P. Perelygin, Yu.G. Sobolev, L.V. Mikhailov, V.Yu. Ugryumov, J. Vincour, Z. Dlouhy, L. Kostov, Ya. Mrazek, N.O. Poroshin, Phys. At. Nuclei 65, no. 9, 1563 (2002).Google Scholar
  27. 27.
    F.M. Lanzafame, M. Blann, Nucl. Phys. A 142, 545 (1970)CrossRefADSGoogle Scholar
  28. 28.
    A.A. Kulko, N.A. Demekhina, R. Kalpakchieva, Yu.A. Muzychka, Yu.E. Penionzhkevich, D.N. Rassadov, N.K. Skobelev, D.A. Testov, Phys. At. Nuclei 70, no. 4, 1 (2007)Google Scholar
  29. 29.
    V.I. Zagrebaev, Phys. Rev. C 67, 061601(R) (2003)CrossRefADSGoogle Scholar
  30. 30.
    R. Bimbot, D. Gardes, M.F. Rivet, Nucl. Phys. A 189, 193 (1972).CrossRefADSGoogle Scholar
  31. 31.
    G. Audi, A.H. Wapstra, C. Thibault, Nucl. Phys. A 729, 337 (2003).CrossRefADSGoogle Scholar
  32. 32.
    J.R. Oppenheimer, M. Phillips, Phys. Rev. 48, 500 (1935).zbMATHCrossRefADSGoogle Scholar
  33. 33.
    K. Rusek, N. Keeley, K.W. Kemper, R. Raabe, Phys. Rev. C 67, 041604(R) (2003)CrossRefADSGoogle Scholar
  34. 34.
    C.H. Dasso, J.L. Guisado, S.M. Lenzi, A. Vitturi, Nucl. Phys. A 597, 473 (1996).CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • Yu. E. Penionzhkevich
    • 1
  • R. A. Astabatyan
    • 1
  • N. A. Demekhina
    • 2
  • G. G. Gulbekian
    • 1
  • R. Kalpakchieva
    • 1
  • A. A. Kulko
    • 1
  • S. M. Lukyanov
    • 1
  • E. R. Markaryan
    • 1
  • V. A. Maslov
    • 1
  • Yu. A. Muzychka
    • 1
  • Yu. Ts. Oganessian
    • 1
  • R. V. Revenko
    • 1
  • N. K. Skobelev
    • 1
  • Yu. G. Sobolev
    • 1
  • D.A.Testov
    • 1
  • T. Zholdybaev
    • 3
  1. 1.Joint Institute for Nuclear ResearchDubnaRussia
  2. 2.Yerevan Physics InstituteYerevanArmenia
  3. 3.Institute of Nuclear PhysicsAlmaty-82Kazakhstan

Personalised recommendations