Elsevier

Nuclear Physics A

Volume 408, Issue 1, 24 October 1983, Pages 21-44
Nuclear Physics A

High-spin states in the direct 12, 13C(α, p)15, 16N reactions

https://doi.org/10.1016/0375-9474(83)90346-9Get rights and content

Abstract

The 12, 13C(α, p) reactions at Eα = 35 MeV are used to study high-spin states in 15N and 16N. Theoretical prescriptions are given for normalizing DWBA predictions in a semi-microscopic model and for comparing differential cross sections in the two reactions. Angular distributions are presented for many states, with DWBA analyses for those of high spin, from 10.7 to 15.4 MeV in 15N and from 0 to 11.8 MeV in 16N. The observed magnitudes are larger than predicted. In 16N, a 4 state is observed at 6.17 MeV, and theoretical comparisons indicate that a member of the strong triplet of states at 7.6 MeV, resolved in this study, has also a 4 spin. Strong peaks are observed at 15.42 MeV in 15N and at 11.75 MeV in 16N, but neither peak can be explained by our theoretical analysis. The DWBA angular distributions depend sensitively on the choice of the α-particle optical potential.

References (30)

  • P.D. Kunz et al.

    Nucl. Phys.

    (1982)
  • K. van der Borg et al.

    Phys. Lett.

    (1979)
  • J.W. Smits et al.

    Nucl. Phys.

    (1976)
    P.A. Smith et al.

    Nucl. Phys.

    (1981)
  • N. Austern

    Direct nuclear reaction theories

    (1970)
  • J.R. Shepard, private...
  • N. Baron et al.

    Phys. Rev.

    (1971)
  • O.F. Nemets et al.

    Sov. J. Nucl. Phys.

    (1967)
  • C.C. Lu et al.

    Phys. Rev.

    (1969)
  • G. Mairie et al.

    Nucl. Phys.

    (1978)
  • H. Ohmuma et al.

    Phys. Lett.

    (1982)
  • H. Bird

    Nucl. Phys.

    (1966)
  • J.J. Hamill and P.D. Kunz, Phys. Lett., to be...
  • N.T. Butabaev et al.

    Sov. J. Nucl. Phys.

    (1976)
  • W.R. Faik et al.

    Nucl. Phys.

    (1975)
  • J.J. Hamill
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    Work supported by the US Department of Energy.

    Present address: Kernfysisch Versneller Instituut, 9747 AA Groningen, The Netherlands.

    ∗∗

    Present address: Institute for Nuclear Study, University of Tokyo, Tokyo 188, Japan.

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