Study of the Hoyle state in 12C produced by 20Ne + 12C reactions

Since its discovery, the Hoyle state of 12C has attracted much interest. Its properties have been discussed several times, due to its cluster structure and the astrophysical implications. In this contribution, the Hoyle state decay has been studied using 20Ne+12C reactions at 25 MeV/nucleon. The invariant mass method has been used to get all the properties of the original 12C starting from a 3-α correlation. The background in the reconstructions was removed using the event mixing method. Finally, we made a simulation of the 3-α decay, including the effects of angular and energy resolutions assuming different possible modes. As a first result, we show a qualitative agreement of the experimental data with the simulated sequential decay. Further studies are ongoing to precisely extract the branching ratios and all the uncertainties due to the simulation parameters

French ccAFU guidelines - Update 2018-2020 Prostate cancer

National audienc

Clinical outcomes after salvage radiotherapy without androgen deprivation therapy in patients with persistently detectable PSA after radical prostatectomy: results from a national multicentre study

International audienc

Characterization of the breakup channel in the asymmetric systems 40,48^{40,48}Ca+12^{12}C at 25 and 40 MeV/nucleon

International audienceAn analysis of the asymmetric reactions $^{40,48}$Ca+$^{12}$C at 25 and 40 MeV/nucleon is presented. Data have been collected with six modules of the FAZIA array. The analysis is focused on the breakup channel of sources produced in dissipative collisions, partially corresponding to incomplete fusion processes. The study has been performed both on detected fragments and on some resonances reconstructed by means of particle-fragment correlations, with a focus on the evolution of the breakup channel with the beam energy and the neutron content of the system, looking in particular at the relative velocity between the breakup fragments. Results show that also Carbon fragments reconstructed by means of particle correlations can be in large part interpreted as the light partner of a scission

First results from the INDRA-FAZIA apparatus on isospin diffusion in Ni 58,64 + Ni 58,64 systems at Fermi energies

An investigation of the isospin equilibration process in the reactions Ni58,64+Ni58,64 at two bombarding energies in the Fermi regime (32 and 52 MeV/nucleon) is presented. Data have been acquired during the first experimental campaign of the coupled INDRA-FAZIA apparatus in GANIL. Selecting from peripheral to semicentral collisions, both the neutron content of the quasiprojectile residue and that of the light ejectiles coming from the quasiprojectile evaporation have been used as probes of the dynamical process of isospin diffusion between projectile and target for the asymmetric systems. The isospin transport ratio technique has been employed. The relaxation of the initial isospin imbalance with increasing centrality has been clearly evidenced. The isospin equilibration appears stronger for the reactions at 32 MeV/nucleon, as expected due to the longer projectile-target interaction time than at 52 MeV/nucleon. Coherent indications of isospin equilibration come from the quasiprojectile residue characteristics and from particles ascribed to the quasiprojectile decay

First results from the INDRA-FAZIA apparatus on isospin diffusion in 58,64^{58,64}Ni+58,64^{58,64}Ni systems at Fermi energies

International audienceAn investigation of the isospin equilibration process in the reactions $^{58,64}$Ni+$^{58,64}$Ni at two bombarding energies in the Fermi regime ($32\,$MeV/nucleon and $52\,$MeV/nucleon) is presented. Data have been acquired during the first experimental campaign of the coupled INDRA-FAZIA apparatus in GANIL. Selecting from peripheral to semi-central collisions, both the neutron content of the quasiprojectile residue and that of the light ejectiles coming from the quasiprojectile evaporation have been used as probes of the dynamical process of isospin diffusion between projectile and target for the asymmetric systems. The isospin transport ratio technique has been employed. The relaxation of the initial isospin imbalance with increasing centrality has been clearly evidenced. The isospin equilibration appears stronger for the reactions at $32\,$MeV/nucleon, as expected due to the longer projectile-target interaction time than at $52\,$MeV/nucleon. Coherent indications of isospin equilibration come from the quasiprojectile residue characteristics and from particles ascribed to the quasiprojectile decay