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The European Physical Journal Special Topics

, Volume 150, Issue 1, pp 9–12 | Cite as

The search for 7H

  • M. Caamaño
  • D. Cortina-Gil
  • W. Mittig
  • H. Savajols
  • M. Chartier
  • C. E. Demonchy
  • B. Fernández
  • A. Gillibert
  • M. B. Gómez-Hornillos
  • B. Jurado
  • O. Kiselev
  • R. Lemmon
  • A. Obertelli
  • F. Rejmund
  • M. Rejmund
  • P. Roussel-Chomaz
  • R. Wolski
Article

Abstract.

This work focuses on the experimental search and characterisation of the super-heavy 7H, using a one-proton transfer reaction 12C(8He,7H)13N. A 8He primary beam at 15.4 A MeV was delivered by the GANIL-SPIRAL facility and impinged on a gaseous carbon target, the active target MAYA, where 7H was produced and detected. 7H was observed as a resonance 0.57+0.42-0.21 MeV above the 3H+4n subsystem mass, with an associated width of 0.09+0.94-0.06 MeV. The differential cross-section of 7H production for the 12C(8He,7H)13N reaction yields 40.1+58.0-30.6 μb/sr. This experiment demonstrates the advantage of using the active target technique particularly well suited for the detection of low energy residues.

PACS.

25.70.Hi Transfer reactions 27.20.+n 6(less-than-or-equal-to)A(less-than-or-equal-to)19 

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References

  1. B. Jonson, Phys. Rep. 389, 1 (2004) Google Scholar
  2. E.G. Adelberg et al., Phys. Lett. B 25, 595 (1967) Google Scholar
  3. M. Meister et al., Nucl. Phys. A 723, 13 (2003) Google Scholar
  4. S.I. Sidorchuk et al., Phys. Lett. B 594, 54 (2004) Google Scholar
  5. A. Korsheninnikov et al., Phys. Rev. Lett. 87, 092501 (2001) Google Scholar
  6. M. Meister et al., Phys. Rev. Lett. 91, 162504 (2003) Google Scholar
  7. M.S. Golovkov et al., Phys. Rev. C 72, 064612 (2005) Google Scholar
  8. A.V. Belozyorov et al., Nucl. Phys. A 460, 352 (1986) Google Scholar
  9. A.I. Baz, V.I. Goldanskii, V.Z. Goldberg, J.B. Zeldovich, Light and intermediate nuclei close to the line of nucleon stability (Moscow, Nauka, 1972) (in Russian) Google Scholar
  10. N. Timofeyuk, Phys. Rev. C 65, 064306 (2002) Google Scholar
  11. S. Aoyama, N. Itagki, Nucl. Phys. A 738, 362 (2004) Google Scholar
  12. A.A. Korsheninnikov et al., Phys. Rev. Lett. 90, 08251 (2003) Google Scholar
  13. M.S. Golovkov et al., Phys. Lett. B 588, 163 (2004) Google Scholar
  14. W. Mittig et al., Nucl. Phys. A 722, 10c (2003) Google Scholar
  15. J.F. Ziegler, Rev. App. Phys. 85, 1249 (1999) Google Scholar
  16. M. Caamaño, Production and characterization of the $^7{\rm H}$ resonance, Doctoral Thesis, University of Santiago de Compostela, 2006 Google Scholar
  17. A.A. Korsheninnikov, Nucl. Phys. A 751, 501c (2005) Google Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • M. Caamaño
    • 1
  • D. Cortina-Gil
    • 1
  • W. Mittig
    • 2
  • H. Savajols
    • 2
  • M. Chartier
    • 3
  • C. E. Demonchy
    • 2
  • B. Fernández
    • 3
  • A. Gillibert
    • 4
  • M. B. Gómez-Hornillos
    • 3
  • B. Jurado
    • 2
  • O. Kiselev
    • 5
  • R. Lemmon
    • 6
  • A. Obertelli
    • 4
  • F. Rejmund
    • 2
  • M. Rejmund
    • 2
  • P. Roussel-Chomaz
    • 2
  • R. Wolski
    • 7
  1. 1.Universidad de Santiago de CompostelaSantiago de CompostelaSpain
  2. 2.GANIL, Bd Henri Becquerel, BP. 55027Caen Cedex 05France
  3. 3.University of LiverpoolLiverpoolUK
  4. 4.CEA/DSM/DAPNIA, CEA SaclayGif-sur-Yvette CedexFrance
  5. 5.Institute of Nuclear Chemistry, University of MainzMainzGermany
  6. 6.CCLRC Daresbury LaboratoryDaresbury Warrington CheshireUK
  7. 7.The Henryk Niewodniczański Institute of Nuclear PhysicsKrakówPoland

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