Inelastic electron scattering from O18

B. E. Norum, M. V. Hynes, H. Miska, W. Bertozzi, J. Kelly, S. Kowalski, F. N. Rad, C. P. Sargent, T. Sasanuma, W. Turchinetz, and B. L. Berman
Phys. Rev. C 25, 1778 – Published 1 April 1982
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Abstract

Inelastic electron scattering from the low-lying even-parity states of O18 has been performed. The measurements span a range in momentum transfer from 0.6 to 2.7 fm1. Form factors have been determined for the two lowest 0+ excitations, the three lowest 2+ excitations, and the three lowest 4+ excitations. Transition densities for the 2+ and 4+ excitations have been obtained from a Fourier-Bessel analysis of these data. Comparisons were made with the predictions of various theoretical calculations and the agreement was found generally to be poor. A coexistence model was used to decompose the measured form factors into their single-particle and collective components, which in turn were compared with their counterparts in O16 and O17. The results indicate that this model provides a useful framework within which to understand the structure of the oxygen isotopes. Transition densities also were obtained within the context of this model.

NUCLEAR REACTIONS O18(e,e) low-lying even-parity excited states; measured form factors at 90° and 160°, 0.6q2.7 fm1; comparison to shell and coexistence models; transition densities extracted.

  • Received 4 December 1981

DOI:https://doi.org/10.1103/PhysRevC.25.1778

©1982 American Physical Society

Authors & Affiliations

B. E. Norum*, M. V. Hynes, H. Miska, W. Bertozzi, J. Kelly, S. Kowalski, F. N. Rad§, C. P. Sargent, T. Sasanuma, and W. Turchinetz

  • Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

B. L. Berman

  • Lawrence Livermore Laboratory, University of California, Livermore, California 94550

  • *Present address: Department of Physics, University of Virginia, Charlottesville, Virginia 22901.
  • Present address: Los Alamos National Laboratory, Los Alamos, New Mexico 87544.
  • Present address: Institut für Kernphysik, Universitat Mainz, Mainz, West Germany.
  • §Present address: Fermi National Accelerator Laboratory, Batavia, Illinois 60510.
  • Present address: Laboratory of Nuclear Science, Tohoku University, Sendai, Japan.

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Vol. 25, Iss. 4 — April 1982

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