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The role of dynamics in the fusion of two heavy nuclei

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Il Nuovo Cimento A (1965-1970)

Summary

We use a simple parametrization of the interaction potential between two heavy ions to calculate static fusion barriers and the limit of fusion. A phenomenological dynamical model is presented which allows us to reproduce the fusion excitation functions of a large number of systems measured experimentally. The role of the dynamics on the fusion process is investigated in details and it is shown that the dynamical fusion barriers can be, in some cases, different from the static ones. The difference between them, called the dynamical energy surplus, is studied as a function of different variables and is shown to have a great influence on the fusion cross-sections.

Riassunto

Si usa una semplice parametrizzazione del potenziale d’interazione tra due ioni pesanti per calcolare barriere statiche di fusione e i limiti di fusione. Si presenta un modello fenomenologico dinamico che permette di riprodurre le funzioni di eccitazione di fusione di un gran numero di sistemi misurati sperimentalmente. Si studia il ruolo della dinamica del processo di fusione in dettaglio e si mostra che le barriere dinamiche di fusione possono essere, in alcuni casi, differenti da quelle statiche. La differenza tra queste, detta surplus d’energia dinamica, è studiata in funzione di diverse variabili e si mostra che ha una grande influenza sulle sezioni d’urto di fusione.

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Authors and Affiliations

  1. Service de Physique Nucléaire, Métrologie Fondamentale, CEN Saclay, 91191, Gif-sur-Yvette Cedex, France

    T. Suomijärvi, R. Lucas, C. Ngô, E. Tomasi, D. Dalili & J. Matuszek

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  1. T. Suomijärvi
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  2. R. Lucas
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  3. C. Ngô
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  4. E. Tomasi
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  5. D. Dalili
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  6. J. Matuszek
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Traduzione a cura della Redazione.

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Suomijärvi, T., Lucas, R., Ngô, C. et al. The role of dynamics in the fusion of two heavy nuclei. Nuov Cim A 82, 51–77 (1984). https://doi.org/10.1007/BF02776043

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PACS.25.70

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