Mean-field instabilities and cluster formation in nuclear reactions

Abstract : We review recent results on intermediate mass cluster production in heavy ion collisions at Fermi energy and in spallation reactions. Our studies are based on modern transport theories, employing effective interactions for the nuclear mean-field and incorporating two-body correlations and fluctuations. Namely we will consider the Stochastic Mean Field (SMF) approach and the recently developed Boltzmann-Langevin One Body (BLOB) model. We focus on cluster production emerging from the possible occurrence of low-density mean-field instabilities in heavy ion reactions. Within such a framework, the respective role of one and two-body effects, in the two models considered, will be carefully analysed. We will discuss, in particular, fragment production in central and semi-peripheral heavy ion collisions, which is the object of many recent experimental investigations. Moreover, in the context of spallation reactions, we will show how thermal expansion may trigger the development of mean-field instabilities, leading to a cluster formation process which competes with important re-aggregation effects.
Type de document :
Pré-publication, Document de travail
2016
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http://hal.in2p3.fr/in2p3-01314322
Contributeur : Sophie Heurteau <>
Soumis le : mercredi 11 mai 2016 - 11:15:43
Dernière modification le : jeudi 11 janvier 2018 - 06:12:41

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  • HAL Id : in2p3-01314322, version 1
  • ARXIV : 1604.03866

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Citation

M. Colonna, P. Napolitani, V. Baran. Mean-field instabilities and cluster formation in nuclear reactions. 2016. 〈in2p3-01314322〉

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