Alpha-particle spectroscopic strengths using the (p,pα) reaction at 101.5 MeV

T. A. Carey, P. G. Roos, N. S. Chant, A. Nadasen, and H. L. Chen
Phys. Rev. C 29, 1273 – Published 1 April 1984
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Abstract

Proton-alpha particle coincidence spectra from 101.5 MeV (p,pα) reactions on O16, Ne20, Mg24, Si28, S32, Ca40, Ti48, Fe54, and Zn66 have been obtained in a coplanar geometry at quasifree angle pairs for each target. A missing energy resolution of 450 keV was sufficient to separate the lowlying states of the residual nuclides. Data for ground-state transitions, and for eight excited states were obtained and compared with distorted-wave impulse approximation calculations. The targetmass dependence of the resultant relative ground-state spectroscopic factors is reasonably consistent with that obtained from (Li6,d) reactions. The corresponding absolute spectroscopic factors are larger than shell-model predictions, but sensitive to the bound-state parametrization. However, the spectral shapes do constrain the range of possible bound-state rms radii. The fits to the excited states are less satisfactory.

  • Received 29 November 1983

DOI:https://doi.org/10.1103/PhysRevC.29.1273

©1984 American Physical Society

Authors & Affiliations

T. A. Carey*, P. G. Roos, N. S. Chant, A. Nadasen, and H. L. Chen

  • Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742

  • *Present address: P Division, Los Alamos Scientific Laboratory, Los Alamos, NM 87545.
  • Present address: University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, MI 48128.
  • Present address: Department of Physics, Towson State University, Baltimore, MD 21204.

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Vol. 29, Iss. 4 — April 1984

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