C12 C13(π+,p) reaction at Tπ=90 and 180 MeV

R. E. Anderson, B. Höistad, R. L. Boudrie, E. W. Hoffman, R. J. Macek, C. L. Morris, H. A. Thiessen, G. R. Smith, and J. Källne
Phys. Rev. C 23, 2616 – Published 1 June 1981
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Abstract

The (π+,p) reaction has been studied at Tπ=90 and 180 MeV on C12, and at Tπ=90 and 170 MeV on C13. The resolution was sufficient to resolve many single levels in the residual nuclei, and angular distributions were obtained between laboratory angles of 10° and 115°. A comparison between the present (π,p) data and existing high-energy (p,d) data in terms of a model assuming intermediate pion exchange in the (p,d) reaction indicates that the (π,p) reaction is an important cubprocess in the (p,d) reaction. The present data also suggest that pion rescattering is likely to be a fundamental part of the (π,p) reaction mechanism.

NUCLEAR REACTIONS C12(π+,p)C11, C13(π+,p)C12, Ex=0.0 to 28 MeV, Tπ=90 and 170 or 180 MeV, ΔE=400 to 600 keV, enriched targets, magnetic spectrometer, measured dσdΩ(π+,p) from θlab=10° to θlab=115°, comparison with (p,d) reaction data, reaction mechanism.

  • Received 30 April 1980

DOI:https://doi.org/10.1103/PhysRevC.23.2616

©1981 American Physical Society

Authors & Affiliations

R. E. Anderson*, B. Höistad, R. L. Boudrie, E. W. Hoffman, R. J. Macek, C. L. Morris, and H. A. Thiessen

  • Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545

G. R. Smith

  • University of Colorado, Boulder, Colorado 80309

J. Källne

  • University of Virginia, Charlottesville, Virginia 22903

  • *Present address: Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514.
  • Present address: Department of Physics, University of Texas, Austin, Texas 78712.
  • Present address: Schweizerisches Institut Für Nuklearforschung, CH-5234 Villigen, Switzerland.

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Issue

Vol. 23, Iss. 6 — June 1981

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