Elsevier

Nuclear Physics A

Volume 269, Issue 1, 28 September 1976, Pages 61-73
Nuclear Physics A

Extrapolation of low-energy reaction cross sections

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Abstract

Many applications in astrophysical and controlled-fusion research require values of nuclear-reaction cross sections at interaction energies considerably below the range in which absolute measurements are practical. Measured cross sections thus must be extrapolated to the energies of interest. For exoergic charged-particle reactions, which are not dominated by resonances within the range of interest, it is shown that a physically meaningful extrapolation formula can be derived from the R-matrix theory. For energies such that only incident s-waves contribute to the reaction, the resultant formula contains at most three “free” parameters. These results are used to extrapolate cross sections for various d+6Li reactions, measured at energies above 100 keV, to energies in the range of 1 keV.

References (15)

  • D.D. Clayton

    Principles of stellar evolution and nucleosynthesis

  • J.G. Brennan

    Phys. Rev.

    (1958)
    B.H. Duane

    Pac. Northwest Lab. Annual Report, BNWL-1685

    (Nov. 1972)
    S.L. Greene

    Lawrence Radiation Lab. Report UCRL-70522

    (1967)
  • J.R. McNally

    USAEC Report ORNL-TM-4647

    (1974)

    USAEC Report ORNL-TM-4575

    (1974)
  • A.J. Elwyn et al.

    Proc. Conf. on nuclear cross sections and technology

  • A. J. Elwyn, R. E. Holland, C. Davids, F. J. Lynch, L. Meyer-Schützmeister and F. P. Mooring, to be...A.J. Elwyn

    Bull. Am. Phys. Soc.

    (1975)
  • A.M. Lane et al.

    Rev. Mod. Phys.

    (1958)
  • T. Teichmann

    Phys. Rev.

    (1950)
There are more references available in the full text version of this article.

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Work performed under the auspices of the US Energy Research and Development Administration.

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