Elsevier

Physics Letters B

Volume 45, Issue 2, 9 July 1973, Pages 81-84
Physics Letters B

Relation between the background cross section and the correlation between partial widths

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Abstract

A relation is derived between the background cross section and the correlation coefficient between partial width amplitudes, in the frame of the shell-model approach to nuclear reactions. It involves explicitly the resonance parameters, and in contrast to an otherwise equivalent relation recently derived by Lane, a direct contribution. We apply our result to the reactions 29Si(γ, n), 169Tm(n, γ) and 208Pb(γ, n). We show that the relationship between the observation of an asymmetric resonance peak and the existence of a sizable background cross section is not straightforward.

References (27)

  • A.M. Lane

    Phys. Lett.

    (1970)
  • A.M. Lane

    Ann. Phys. (N.Y.)

    (1971)
  • O.A. Wasson et al.

    Phys. Lett.

    (1963)
  • C. Shakin

    Ann. Phys. (N.Y.)

    (1963)
  • L. Estrada et al.

    Ann. Phys. (N.Y.)

    (1963)
  • A. Lejeune et al.

    Nucl. Phys.

    (1970)
  • A.M. Lane et al.

    Nucl. Phys.

    (1960)
  • D.C. Kocher et al.

    Nucl. Phys.

    (1971)
  • C. Mahaux et al.

    Nucl. Phys.

    (1969)
  • A.M. Lane
  • H.E. Jackson et al.

    Phys. Rev. Lett.

    (1972)
  • M.A. Lone

    Phys. Rev.

    (1968)
  • C.D. Bowman et al.

    Phys. Rev. Lett.

    (1969)
  • Cited by (0)

    On leave of absence from the University of Liège, Belgium.

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