Elsevier

Nuclear Physics A

Volume 261, Issue 3, 3 May 1976, Pages 478-490
Nuclear Physics A

Fusion cross sections for 10,11B+12C at sub-Coulomb energies

https://doi.org/10.1016/0375-9474(76)90161-5Get rights and content

Abstract

Total fusion cross sections for the 10B + 12C and 11B + 12C reactions have been determined over a 5 MeV (c.m.) energy range extending to ≈ 3 MeV below the Coulomb barrier. Absolute γ-ray yields for specific transitions in the de-excitation of the heavy products following compound nucleus decay were measured using a Ge(Li) detector. Statistical model calculations of the decay modes of the compound nucleus have been used to deduce, from the γ-ray data, cross sections for single proton, neutron and α-particle emission, and to determine total cross sections for compound nucleus formation. No evidence has been found for sub-Coulomb resonances in either reaction. The total reaction cross sections are compared with optical model calculations using different parameter sets and the observed trend in the very low energy cross sections is discussed relative to other reactions in the same mass region.

References (41)

  • E. Vogt et al.

    Phys. Rev. Lett.

    (1960)
  • B. Imanishi

    Nucl. Phys.

    (1968)
  • H. Voit et al.

    Phys. Rev.

    (1974)
  • R. G. Stokstad, STATIS, A. Hauser-Feshbach Computer Code, Wright Nuclear Structure Laboratory Internal Report 52, Yale...
  • U.C. Voos et al.

    Nucl. Phys.

    (1969)
  • R. A. Dayras, R. G. Stokstad, Z. E. Switkowski and R. M. Wieland, Nucl. Phys., submitted for...
  • M.D. High et al.

    Bull. Am. Phys. Soc.

    (1975)
  • P. R. Christensen, R. A. Dayras and Z. E. Switkowski, to be...
  • D.M. Brink et al.

    Nucl. Phys.

    (1974)
  • W.A. Fowler et al.

    Astrophys, J. Suppl. no. 91

    (1964)
  • C.A. Barnes
  • S.E. Woosley et al.

    Phys. Rev. Lett.

    (1971)
  • S.E. Woosley et al.

    Astrophys. J. Suppl. no 231

    (1973)
  • E. Almqvist et al.

    Phys. Rev. Lett.

    (1960)
    E. Almqvist et al.

    Phys. Rev.

    (1963)
  • J.R. Patterson et al.

    Astrophys, J.

    (1969)
  • M.G. Mazarakis et al.

    Astrophys. J.

    (1972)

    Phys. Rev.

    (1973)
  • J.R. Patterson et al.

    Nucl. Phys.

    (1971)
  • H. Spinka et al.

    Nucl. Phys.

    (1974)
  • B.N. Nagorcka et al.

    Nature Phys. Sci.

    (1971)
  • G. Michaud et al.

    Phys. Lett.

    (1969)

    Phys. Rev.

    (1971)
  • Cited by (30)

    • Heavy ion reactions below the Coulomb barrier

      1994, Nuclear Physics, Section A
    View all citing articles on Scopus

    Supported in part by the National Science Foundation (MPS71-02670 A05].

    ††

    Present addres: Physics Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37830.

    †††

    Present address: Niels Bohr Institute, DK 2100 Copenhagen ø, Denmark.

    Present address: Franklin and Marshall College, Lancaster, Pennsylvania 17604

    View full text