Elsevier

Nuclear Physics A

Volume 231, Issue 3, 21 October 1974, Pages 376-390
Nuclear Physics A

Study of the ground-state correlations and continuum model calculations for photonuclear reactions

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Abstract

Using the effective operator formalism, the importance of ground-state correlations on photonuclear cross sections is studied. For purposes of orientation, a bound-state calculation is first performed to take into account the mixing of 2p-2h and 3p-3h configurations into the 1p-1h dipole states. Inclusion of these configurations is found to affect the energies of the 1p-1h states in opposite directions and the combined effect, including that on the transition strengths, is negligible. Most of the reduction in the absorption comes from the ground-state correlations of which the A-dependence is examined with a model interaction. We then proceed to calculate the excitation function for the reactions using effective dipole matrix elements obtained from the continuum wave functions of the coupled-channels calculation. Application to the case of 16O leads to a reduction of about 25 % in the cross sections.

References (20)

  • W.L. Wang et al.

    Phys. Rev.

    (1972)
  • J. Blomqvist et al.

    Phys. Lett.

    (1969)
  • B. Buck et al.

    Nucl. Phys.

    (1967)
  • A.M. Lane et al.

    Phys. Rev.

    (1973)
  • M. Harvey et al.

    Nucl. Phys.

    (1970)
  • G.E. Brown et al.

    Nucl. Phys.

    (1961)
  • D.M. Brink et al.

    Nucl. Phys.

    (1967)
  • V. Gillet, B. Giraud and M. Rho, preprint, Saclay...
  • L.L. Hill
  • J. Raynal et al.

    Nucl. Phys.

    (1967)
There are more references available in the full text version of this article.

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Work supported in part by the Atomic Energy Control Board of Canada.

††

Laboratoire associé au Centre National de la Recherche Scientifique.

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