Kinematically complete study of the Li7(p)8Be*→2α reaction at Ep=25 MeV

D. Branford, A. Sada, T. Davinson, N. J. Davis, E. W. Macdonald, J. Rahighi, P. Sellin, C. H. Shepherd-Themistocleous, and A. C. Shotter
Phys. Rev. C 43, 2866 – Published 1 June 1991
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Abstract

A kinematically complete study of the Li7(p)8Be*→2α reaction at Ep=25 MeV is described. An upper limit of dσ/dΩ<0.04 μb sr1 is reported for the θγ=90° capture cross section to the 2+ states at 16.62 and 16.93 MeV, which is five times smaller than published results. This new datum is shown to be more consistent with a semidirect reaction mechanism involving the giant dipole resonance built on the Be*8 2.94-MeV state than the previously proposed direct reaction mechanism.

  • Received 24 May 1990

DOI:https://doi.org/10.1103/PhysRevC.43.2866

©1991 American Physical Society

Authors & Affiliations

D. Branford, A. Sada, T. Davinson, N. J. Davis, E. W. Macdonald, J. Rahighi, P. Sellin, C. H. Shepherd-Themistocleous, and A. C. Shotter

  • Department of Physics, Edinburgh University, Mayfield Road, Edinburgh EH9 3JZ, Scotland

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Vol. 43, Iss. 6 — June 1991

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