# Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (12): 181

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2018) •

### Light and heavy clusters in warm stellar matter

Helena Pais 1, Francesca Gulminelli 2, Constança Providência 1, Gerd Röpke 3,4

1. 1 CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
2 LPC (CNRS/ENSICAEN/Universite´ de Caen Normandie), UMR6534, 14050 Caen Ce´dex, France
3 Institut fu¨r Physik, Universita¨t Rostock, 18051 Rostock, Germany
4 National Research Nuclear University (MEPhI), Moscow, Russia 115409
• Contact: Helena Pais E-mail:pais.lena@uc.pt
• Supported by:

This work was partly supported by the FCT (Portugal) Project No. UID/FIS/04564/2016 and by former NewCompStar, COST Action MP1304. H.P. is supported by FCT (Portugal) under Project No. SFRH/BPD/95566/2013.

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Helena Pais, Francesca Gulminelli, Constan?a Providência, Gerd R?pke. Light and heavy clusters in warm stellar matter.Nuclear Science and Techniques, 2018, 29(12): 181

Abstract:

Light and heavy clusters are calculated for warm stellar matter in the framework of relativistic mean-field models, in the single-nucleus approximation. The cluster abundances are determined from the minimization of the free energy. In-medium effects of light cluster properties are included by introducing an explicit binding energy shift analytically calculated in the Thomas–Fermi approximation, and the coupling constants are fixed by imposing that the virial limit at low density is recovered. The resulting light cluster abundances come out to be in reasonable agreement with constraints at higher density coming from heavy-ion collision data. Some comparisons with microscopic calculations are also shown.