C12(p,pn)C11 Cross Section at 7.6 GeV

G. W. Butler, S. B. Kaufman, E. P. Steinberg, and B. D. Wilkins
Phys. Rev. C 6, 1153 – Published 1 October 1972
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Abstract

The absolute cross section for the C12(p,pn)C11 reaction has been measured in an external beam of the Argonne zero gradient synchrotron at 8.5-GeV/c momentum (7.6-GeV protons). Proton fluxes were measured with a scintillation counter telescope, and the 20.4 min C11 activity induced in 18-in.-thick plastic scintillators was determined both by internal scintillation counting and by β+-annihilation radiation counting with a NaI(T1) well crystal. A correction for the formation of C11 by secondary particles was determined and a correction was made for the small π+ contamination of the proton beam. The C12(p,pn)C11 cross section at 7.6 GeV is 28.2 ± 0.6 mb.

  • Received 16 June 1972

DOI:https://doi.org/10.1103/PhysRevC.6.1153

©1972 American Physical Society

Authors & Affiliations

G. W. Butler*, S. B. Kaufman, E. P. Steinberg, and B. D. Wilkins

  • Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439

  • *Present address: Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87544.

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Issue

Vol. 6, Iss. 4 — October 1972

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