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A consistent study of precompound and compound-nucleus emission mechanisms in neutron-induced reactions

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The exciton model in its closed form and the Weisskopf-Ewing model have been consistently applied to neutron-induced reactions. The analysis has been performed for 12 nuclei in the rangeA=45–209. The primary particle-emission is considered to be governed by an admixture of precompound and compound-nucleus mechanisms, while all consecutive particles are considered to undergo pure compound-nucleus emission. The calculated primary-neutron spectra and excitation functions for (n, p), (n, 2n) and (n, 3n) reactions atE n=4–24 MeV have been compared with experimental data. The average best-fit values of the exciton-model free parameterK have been found to be ¯K=700 MeV3. Departures form this value appear to cancel out structure effects introduced into transition rates through the structure-sensitive single-particle level density.

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Authors and Affiliations

  1. “Rudjer Boškovic” Institute, Zagreb, Croatia, Yugoslavia

    E. Holub, D. Počanić, R. Čaplar & N. Cindro

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  1. E. Holub
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  2. D. Počanić
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  3. R. Čaplar
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  4. N. Cindro
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Holub, E., Počanić, D., Čaplar, R. et al. A consistent study of precompound and compound-nucleus emission mechanisms in neutron-induced reactions. Z Physik A 296, 341–357 (1980). https://doi.org/10.1007/BF01438529

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  • DOI: https://doi.org/10.1007/BF01438529

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