Study of the C12(h, p)N14 Reaction Mechanism by a Systematic Use of the pγ Angular-Correlation Method

B. Heusch and A. Gallmann
Phys. Rev. C 7, 1810 – Published 1 May 1973
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Abstract

The mechanism of the reaction C12(h, p)N14 has been studied by measuring the alignment of the 10 bound states of N14, at 32 incident energies in the range 3Eh11 MeV. These alignments were measured by the angular-correlation technique, using a collinear geometry with detection of the outgoing protons at 0° as well as at 180°. The theoretical alignments which have been calculated both by the direct-interaction model and by the compound-nucleus statistical model, and which are quite different in these two models for levels of natural parity, are almost constant with energy. However, experimentally, strong fluctuations of the alignment have been observed. For the incident energies used in this work, where the mechanism is usually considered intermediate between these two extreme models, it seems that the reaction C12(h, p)N14 proceeds predominantly by the compound nucleus O15. The giant-resonance structure, or the predominant [pN14] configuration of this nucleus, at the high excitation energies reached in this reaction, can explain theoretically the measured alignments.

  • Received 27 November 1972

DOI:https://doi.org/10.1103/PhysRevC.7.1810

©1973 American Physical Society

Authors & Affiliations

B. Heusch and A. Gallmann

  • Centre de Recherches Nucléaires et Université Louis Pasteur Laboratoire de Physique Nucléaire et d'Instrumentation Nucléaire Strasbourg, France

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Issue

Vol. 7, Iss. 5 — May 1973

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