Energy dependence of Be9+C12 cross sections: Nonstatistical component of the mean cross section

L. Jarczyk, B. Kamys, Z. Rudy, A. Strzałkowski, H. Witała, M. Hugi, J. Lang, R. Müller, J. Sromicki, and H. H. Wolter
Phys. Rev. C 28, 700 – Published 1 August 1983
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Abstract

The mean cross section for the elastic scattering and the Be8 and the α-particle channels in the Be9+C12 system considerably exceeds the Hauser-Feshbach model predictions for the compound nucleus cross section. It is shown that the magnitude as well as the energy and angle dependence of this nonstatistical contribution to the mean cross section can be explained satisfactorily as being produced in a direct transfer reactin. One step He3, n, and α transfer processes are adequate for the description of the Be9 and Be8 channel while a contribution of two-step sequential processes should be taken into account for the He5 and Be8 transfers in the α-particle exit channel.

NUCLEAR REACTIONS C12(B9, x), x=α, Be8, and Be9; DWBA and CRC analysis of one- and two-step transfer contributions to σ(Ex, θx), Ec.m.=5.915.4 MeV.

  • Received 1 February 1983

DOI:https://doi.org/10.1103/PhysRevC.28.700

©1983 American Physical Society

Authors & Affiliations

L. Jarczyk, B. Kamys, Z. Rudy, A. Strzałkowski, and H. Witała

  • Institute of Physics, Jagellonian University, 30-059 Cracow, Poland

M. Hugi*, J. Lang, R. Müller, and J. Sromicki

  • Laboratorium für Kernphysik, Eidgenössische Technische Hochschule, Hönggerberg, 8093 Zürich, Switzerland

H. H. Wolter

  • Sektion Physik, Universität München, D-8046 Garching, Federal Republic of Germany

  • *Present address: Indiana University Cyclotron Facility, Bloomington, Indiana 47405.
  • On leave from the Institute of Physics, Jagellonian University, 30-059 Cracow, Poland.

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Issue

Vol. 28, Iss. 2 — August 1983

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