Expectations of fragment decay from highly excited nuclei

M. Blann, M. G. Mustafa, G. Peilert, H. Stöcker, and W. Greiner
Phys. Rev. C 44, 431 – Published 1 July 1991
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Abstract

The statistical model is used to illustrate the consequences of a successive binary decay mechanism as the initial nuclear excitation is pushed towards the limits of stability. The partition of the excitation energy between light and heavy fragments is explicitly calculated, as are the consequences of the decay of the primary light fragments to particle-bound residual nuclei which would be observed experimentally. The test nucleus Ru44100 is considered at initial excitations of 100, 200, 400, and 800 MeV. Exit channels of n, p, and α and 100 clusters of 3≤Z≤20, 6≤A≤48 are considered from all nuclides in the deexcitation cascade. The total primary and final cluster yields are shown versus Z and initial excitation. The primary versus final yields are also shown individually for C12, Mg26, and Ca48. We show how multifragmentation yields will change with the excitation energy due to a successive binary decay mechanism. Measurements that may be prone to misinterpretation are discussed, as are those that should be representative of initial nucleus excitation.

  • Received 18 March 1991

DOI:https://doi.org/10.1103/PhysRevC.44.431

©1991 American Physical Society

Authors & Affiliations

M. Blann and M. G. Mustafa

  • Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550

G. Peilert, H. Stöcker, and W. Greiner

  • Institut für Theoretische Physik, Universität Frankfurt, Frankfurt am Main, Germany

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Vol. 44, Iss. 1 — July 1991

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