Advertisement

Reactions induced beyond the dripline at low energy by secondary beams

  • W. Mittig
  • C. E. Demonchy
  • H. Wang
  • P. Roussel-Chomaz
  • B. Jurado
  • M. Gelin
  • H. Savajols
  • A. Fomichev
  • A. Rodin
  • A. Gillibert
  • A. Obertelli
  • M. D. Cortina-Gil
  • M. Caamaño
  • M. Chartier
  • R. Wolski
Conference paper

Abstract

Reactions induced on protons at low incident energy (3.5 MeV/n) were measured with a 8He beam accelerated by Spiral at Ganil. The particles were detected in the active target Maya, filled with C4H10 gas. The beam was stopped in the detector, so energies from incident beam energy down to detector threshold were covered. Proton elastic scattering, one neutron pick-up (p; d) and (p; t) reactions were observed. In the (p; d) reaction very high cross-sections of the order of 1barn were observed, that could be reproduced using a direct reaction formalism. This is the first time that this strong increase of transfer reaction cross-sections at very low energy predicted for loosely bound systems was observed. Spectroscopic factors are in agreement with a simple shell model configuration. No evidence for a low lying excited state in 7He was found.

Keywords

Drift Time Time Projection Chamber Spectroscopic Factor Secondary Beam Incident Beam Energy 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. Roussel Chomaz et al., Nucl. Phys. A 693, 495 (2001).CrossRefADSGoogle Scholar
  2. 2.
    A.A. Vorobyov et al., Nucl. Instrum. Methods 119, 509 (1974); Nucl. Instrum. Methods A 270, 419 (1988).CrossRefADSGoogle Scholar
  3. 3.
    P. Egelhof, Proceedings of the International Workshop on Physics with Unstable Nuclear Beams, Serra Negra, Sao Paulo Brazil, edited by C.A. Bertulani et al. (World Scientific, 1997) p. 222.Google Scholar
  4. 4.
    Y. Mizoi et al., Nucl. Instrum. Methods A 431, 112 (1999); Phys. Rev. C 62, 065801 (2000).CrossRefADSGoogle Scholar
  5. 5.
    P. Gangnant et al., report Ganil 27.2002.Google Scholar
  6. 6.
    C.E. Demonchy, thesis T 03 06, December 2003, University of Caen, France.Google Scholar
  7. 7.
    D.R. Tilley et al., TUNL Manuscript, Energy levels of light nuclei A = 7, and Energy levels of light nuclei A = 9.Google Scholar
  8. 8.
    M. Meister et al., Phys. Rev. Lett. 88, 102501 (2002).CrossRefADSGoogle Scholar
  9. 9.
    A.A. Korsheninnikov et al., Phys. Rev. Lett. 82, 3581 (1999).CrossRefADSGoogle Scholar
  10. 10.
    W. von Oertzen et al., Nucl. Phys. A 588c, 129 (1995).CrossRefADSGoogle Scholar
  11. 11.
    H.G. Bohlen et al., Phys. Rev. C 64, 024312 (2001).CrossRefADSGoogle Scholar
  12. 12.
    G.V. Rogachev et al., Phys. Rev. Lett. 92, 232502 (2004).CrossRefADSGoogle Scholar
  13. 13.
    D. Halderson, Phys. Rev. C 70, 041603R (2004).CrossRefADSGoogle Scholar
  14. 14.
    I.J. Thompson, Comput. Phys. Rep. 7, 167 (1988).CrossRefADSGoogle Scholar
  15. 15.
    R.L. Varner et al., Phys. Rep. 201, 57 (1991).CrossRefADSGoogle Scholar
  16. 16.
    H. Lenske, G. Schrieder, Eur. Phys. J. A 2, 41 (1997).CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica / Springer-Verlag 2005

Authors and Affiliations

  • W. Mittig
    • 1
    • 8
  • C. E. Demonchy
    • 1
    • 5
  • H. Wang
    • 1
    • 7
  • P. Roussel-Chomaz
    • 1
  • B. Jurado
    • 1
  • M. Gelin
    • 1
  • H. Savajols
    • 1
  • A. Fomichev
    • 2
  • A. Rodin
    • 2
  • A. Gillibert
    • 3
  • A. Obertelli
    • 3
  • M. D. Cortina-Gil
    • 4
  • M. Caamaño
    • 4
  • M. Chartier
    • 5
  • R. Wolski
    • 6
  1. 1.GANIL (DSM/CEA, IN2P3/CNRS)Caen Cedex 5France
  2. 2.FLNR, JINRDubna, Moscow regionRussia
  3. 3.CEA/DSM/DAPNIA/SPhN, SaclayGif-sur-Yvette CedexFrance
  4. 4.University of Santiago de CompostelaSantiago de CompostelaSpain
  5. 5.Department of Physics, Oliver Lodge LaboratoryUniversity of LiverpoolLiverpoolUK
  6. 6.Institute of Nuclear Physics PANCracowPoland
  7. 7.IMPLanzhouPRC
  8. 8.CENBGBordeauxFrance

Personalised recommendations