Excitation functions for the production of F18 and Na24 from Al and Si with fast pions

B. J. Dropesky, G. W. Butler, G. C. Giesler, C. J. Orth, and R. A. Williams
Phys. Rev. C 32, 1305 – Published 1 October 1985
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Abstract

The excitation functions for the pion-induced reactions Al27(π±,xN)18F, Al27(π±,xN)24Na, Si(π±,xN)18F, and Si(π±,xN)24Na have been determined for 50- to 390-MeV π+ and 50- to 500-MeV π. These excitation functions will enable experimenters to monitor high-intensity pion beams by activation of readily available high-purity Al foils or Si disks. The four excitation functions for F18 production and the two for Na24 production by π+ show similar (3,3) resonance patterns. However, those for Na24 production by π are strikingly different in that the cross sections remain large from the resonance energy on down. This feature is attributed to increasing contributions from π absorption and charge exchange with decreasing energy.

  • Received 24 June 1985

DOI:https://doi.org/10.1103/PhysRevC.32.1305

©1985 American Physical Society

Authors & Affiliations

B. J. Dropesky, G. W. Butler, G. C. Giesler, C. J. Orth, and R. A. Williams

  • Isotope And Nuclear Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

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Issue

Vol. 32, Iss. 4 — October 1985

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