Elsevier

Nuclear Physics A

Volume 503, Issue 1, 16 October 1989, Pages 161-177
Nuclear Physics A

Joint momentum distribution of p + n in 6Li

https://doi.org/10.1016/0375-9474(89)90259-5Get rights and content

Abstract

The joint momentum distribution for p + n in 6Li was measured with the 6Li(α, 2α)pn reaction at 118 MeV for 0 ⩽ Q ⩽ 1.2 fm and 0 ⩽ k ⩽ 1.0 fm; Q is the wavenumber of pn c.m. motion in the lab, and k is that for the motion of either nucleon in their c.m. system. The four-body absolute cross sections near Q = 0 were reasonably-well fitted by an impulse approximation model when the np pair was described by a harmonic oscillator wavefunction in the initial state and by Yamaguchi, Paris, or Reid wavefunctions in the final state, and when the primary αα interaction was evaluated by the final-state energy prescription. Poorer fits were obtained using final plane waves and/or the initial-state prescription; in particular, measured yields at large Q exceeded the predictions by large factors. For 0 ⩽ k ⩽ 0.6 fm−1, the impulse approximation model predicted the three- to four-body cross section ratio within about a factor of two, but required an oscillator parameter which gave too small a charge radius for 6Li.

References (31)

  • J.W. Watson

    Nucl. Phys.

    (1971)
  • P.G. Roos

    Nucl. Phys.

    (1976)
  • D. Albrecht

    Nucl. Phys.

    (1980)
  • R.E. Warner

    Nucl. Phys.

    (1984)
  • R.E. Warner

    Nucl. Phys.

    (1985)
  • V.I. Kukulin et al.

    Nucl. Phys.

    (1984)
  • R.V. Reid

    Ann. of Phys.

    (1968)
  • H. Guratzsch

    Nucl. Phys.

    (1980)
  • J.R. Pizzi

    Nucl. Phys.

    (1969)
  • M.J. Moravcsik

    Nucl. Phys.

    (1958)
  • R.E. Warner

    Nucl. Phys.

    (1986)
  • R.K. Bhowmik et al.

    Nucl. Phys.

    (1974)
  • F. Ajzenberg-Selove

    Nucl. Phys.

    (1988)
  • R.E. Warner

    Phys. Rev.

    (1988)
  • A. Bracco

    Phys. Rev. Lett.

    (1983)
  • Cited by (9)

    • Energy levels of light nuclei A = 16-17

      1993, Nuclear Physics, Section A
    • Neutron excess nuclei of hydrogen and helium at ACCULINNA

      2007, European Physical Journal: Special Topics
    View all citing articles on Scopus

    Research partially supported by the National Science Foundation under Grant PHY-8521042.

    1

    Permanent address.

    View full text