Inelastic scattering of O16 from Ca40,42,44,48

Phys. Rev. C 25, 1915 – Published 1 April 1982
K. E. Rehm, W. Henning, J. R. Erskine, D. G. Kovar, M. H. Macfarlane, S. C. Pieper, and M. Rhoades-Brown

Abstract

The inelastic scattering of O16 has been studied on targets of Ca40,42,44 at 60 MeV, and Ca48 at 56 MeV incident energy. Oxygen-16 ions emerging from the reactions were momentum analyzed in a split-pole magnetic spectrograph and identified in the focal plane by a position-sensitive ionization chamber. Angular distributions were extracted for transitions of multipolarity L=0-5 to final states with excitation energies below 5 MeV. In most cases single-channel distorted-wave Born approximation calculations fail to reproduce the data, the discrepancies tending to increase with higher multipolarity. Coupled-channels calculations that explicitly treat the strong couplings connecting all final states observed show improved, though not fully satisfactory, agreement with the data.

NUCLEAR REACTIONS O16 + Ca40,42,44, Elab=60 MeV; O16 + Ca48, Elab=56 MeV; elastic and inelastic scattering; measured σ(θ); DWBA and coupled channels calculations.

DOI: http://dx.doi.org/10.1103/PhysRevC.25.1915

  • Received 16 September 1981
  • Published in the issue dated April 1982

© 1982 The American Physical Society

Authors & Affiliations

K. E. Rehm*, W. Henning, J. R. Erskine, D. G. Kovar, M. H. Macfarlane, S. C. Pieper, and M. Rhoades-Brown§

  • Argonne National Laboratory, Argonne, Illinois 60439

  • *Also: Physik Department, Technische Universität München, West Germany.
  • Present address: U. S. Department of Energy, Washington, D. C.
  • Present address: Physics Department, University of Indiana, Bloomington, Indiana.
  • §Present address: Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee.

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