Speaker
Description
B. Gnoffo1,2, S. Pirrone2, G. Politi1,2, G. Cardella2, E. De Filippo2, E. Geraci1,2, C. Maiolino3, N. S. Martorana1,3, A. Pagano2, E. V. Pagano3, M. Papa2, F. Risitano4,2, F. Rizzo1,3 P. Russotto3 and M. Trimarchi4,2
1 Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università degli Studi di Catania-Catania, Italy
2 INFN, Sezione di Catania-Catania, Italy
3 INFN, Laboratori Nazionali del Sud–Catania, Italy
4 Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina - Messina, Italy
An investigation of the influence of the isospin on the thermometric characteristics, in the reactions 78Kr+40Ca and 86Kr+48Ca at 10 AMeV [1,2,3] will be presented. The experiment was performed at the INFN Laboratori Nazionali del Sud (LNS) in Catania by using the beams delivered by the Superconductive Cyclotron and the 4π multidetector CHIMERA [4,5]. The isospin effects on the decay modes of the two produced composite systems and on the competition between statistical and dynamical break-up of the projectile have been studied. The thermal evaporation from both compound nucleus (CN) and Quasi-Projectile (PLF) have been investigated by extracting the temperature with two different thermometric methods, namely the slope thermometer, with the alpha particles as probe, and the double isotope yields ratio thermometer [6]. The results of the analysis suggest the influence of the N/Z ratio on the system (CN or PLF) temperature, regardless of the nature of the method used for its determination. In fact, in the neutron rich system, a lower value of temperature has been observed for the Quasi-Projectile and a higher one has been found for the compound system, with respect to the ones observed for the neutron poor system. This trend is confirmed by the comparison with the calculations of GEMINI++ statistical model.
- Gnoffo B.,Il Nuovo Cimento C39, (2016) 275;
- Pirrone S. et al., Eur. Phys. J. A 55, (2019) 22;
- Politi G. et al., EPJ Web of Conferences 194, (2018) 07003;
- Pagano A. et al., Nucl. Phys. A 681, (2001) 331;
- Politi G. et al.,IEEE Nuclear Science Symposium Conf. Rec. 2005, (2005) 1140;
- Albergo S. et al., Il Nuovo Cimento C 89, (1985) 1;
