Study of quasi-projectile properties at Fermi energies in 48Ca projectile systems

Abstract

The emission of the pre-equilibrium particles during nuclear collisions at moderate beam energies is still an open question. This influences the properties of the compound nucleus but also changes the interpretation of the quasi-fission process. A systematic analysis of the data obtained by the FAZIA collaboration during a recent experiment with a neutron rich projectile is presented. The full range of charged particles detected in the experiment is within the limit of isotopic resolution of the FAZIA detector. Quasi-projectile (QP) fragments were detected in majority thanks to the forward angular acceptance of the experimental setup which was confirmed by introducing cuts based on the HIPSE event generator calculations. The main goal was to compare the experimental results with the HIPSE simulations after introducing these cuts to investigate the influence of the n-rich entrance channel on the QP fragment properties. More specifically, the lowering of N/Z of QP fragments with beam energy was found to be present since the initial phase of the reaction. Thus, pre-equilibrium emissions might be a possible candidate to explain such an effect.

arXiv comment10 pages, 10 figures

References in corpus (28)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Reaction Dynamics with Exotic Beams
• Constraints on the density dependence of the symmetry energy
• Isospin Physics in Heavy-Ion Collisions at Intermediate Energies
• Determination of the stiffness of the nuclear symmetry energy from isospin diffusion
• Density dependence of the symmetry energy and the nuclear equation of state: A Dynamical and Statistical model perspective
• Higher-order effects on the incompressibility of isospin asymmetric nuclear matter
• Isospin-tracing: A probe of non-equilibrium in central heavy-ion collisions
• Probing the Nuclear Symmetry Energy with Heavy Ion Collisions
• Isospin Diffusion and Equilibration for Sn+Sn collisions at E/A=35 MeV
• Correlations between emission timescale of fragments and isospin dynamics in ${}^{124}$Sn+${}^{64}$Ni and ${}^{112}$Sn+${}^{58}$Ni reactions at 35 AMeV
• Isotopic Scaling of Heavy Projectile Residues from the collisions of 25 MeV/nucleon 86Kr with 124Sn, 112Sn and 64Ni, 58Ni
• Isospin Diffusion Observables in heavy ion reactions
• Isospin diffusion in semi-peripheral ${}^{58}Ni$ + ${}^{197}Au$ collisions at intermediate energies (I): Experimental results
• Isospin transport in 84Kr + 112,124Sn collisions at Fermi energies
• KRATTA, a versatile triple telescope array for charged reaction products
• Neutron to proton ratios of quasiprojectile and midrapidity emission in the ${}^{64}$Zn + ${}^{64}$Zn reaction at 45 MeV/nucleon
• Isospin diffusion in semi-peripheral ${}^{58}Ni$ + ${}^{197}Au$ collisions at intermediate energies (II): Dynamical simulations
• Heavy Residue Isoscaling as a Probe of the Process of N/Z Equilibration
• Isospin diffusion measurement from the direct detection of a Quasi-Projectile remnant
• Inhomogeneous isospin distribution in the reactions of 28Si + 112Sn and 124Sn at 30 and 50 MeV/nucleon
• First results from the INDRA-FAZIA apparatus on isospin diffusion in ${}^{58,64}$Ni+${}^{58,64}$Ni systems at Fermi energies
• Dynamical fission of the quasiprojectile and isospin equilibration for the system 80Kr+ 48 Ca at 35 MeV/nucleon
• Examination of cluster production in excited light systems at Fermi energies from new experimental data and comparison with transport model calculations
• Influence of fast emissions and statistical de-excitation on the isospin transport ratio
• Experimental study of the isospin transport with 40,48 Ca+ 40,48 Ca reactions at 35 MeV/nucleon
• Experimental study of the ${}^{40,48}$Ca+ ${}^{40,48}$Ca reactions at 35 MeV/nucleon
• Characterization of the breakup channel in the asymmetric systems ${}^{40,48}$Ca+${}^{12}$C at 25 and 40 MeV/nucleon

Cited by in corpus (1)

• Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies