Isoscaling studies of reconstructed quasi-projectiles in $^{24}$Mg, $^{40}$Ca+$^{112,124}$Sn reactions at 32 MeV/u

The isotopic distribution of the reaction products are sensitive observables in the study of the charge asymmetry term in the nuclear Equation of State, (nEOS) [1]. Studies on heavy-ion reactions near Fermi-energy region showed that the yield ratio of a given fragment coming from a neutron-rich vs a neutron deficient fragmenting system follows an exponential dependence with respect to the neutron and proton number of the fragments, an effect termed isoscaling (e.g. [2]). In this work, we study the isoscaling on $^{24}$Mg,$^{ 40}$Ca +$^{124,112}$Sn reacting systems from reconstructed quasi-projectile events (QP's), for the determination of the isoscaling parameter $\alpha $. The measurements were performed at the K500 Cyclotron accelerator of Texas A{\&}M University using $^{24}$Mg and $^{40}$Ca beams at 32 MeV/u. The projectile fragments were detected by the Forward Array Using Silicon Technology (FAUST) [3]. Properties of the reconstructed QP's were also systematically investigated (e.g. velocity and E$^{\ast }$/A$_{qp}$ distributions). \textbf{References} [1] M. Colonna \textit{et al}., Eur. Phys. J. A \textbf{30}, 165, (2006). [2] G. A. Souliotis \textit{et al}., Phys. Rev. C \textbf{73,} 024606 (2006). [3] F. Gimeno-Nogues \textit{et al}., Nucl. Instr. Meth. A \textbf{399}, 94 (1997).