Subthreshold pion production

M. Blann
Phys. Rev. C 32, 1231 – Published 1 October 1985
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Abstract

The Boltzmann master equation as adopted for treating equilibration in heavy ion reactions has been modified to include pion production rates from (n,n), (n,p), and (p,p) collisions. We calculate neutral pion production cross sections for reactions of 35 MeV/nucleon N14 with Al27, Ni58, and W184 targets. We also calculate π0 production cross sections for reactions of 12C+12C, Ni58, U238 at beam energies of 60, 74, and 84 MeV/nucleon, and of 44 MeV/nucleon Ar40 with Ca40, Sn119, and U238. Results of these calculations are generally within a factor of 2 of experimental values. Compound nucleus excitations predicted for the equilibrated nuclei for the above reactions are also estimated for implications in a compound nucleus interpretation of the pion production mechanism.

  • Received 24 June 1985

DOI:https://doi.org/10.1103/PhysRevC.32.1231

©1985 American Physical Society

Authors & Affiliations

M. Blann

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

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Issue

Vol. 32, Iss. 4 — October 1985

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