On the elliptical flow and mass asymmetry of the colliding nuclei

A study of elliptical flow is carried out for different mass asymmetries of colliding nuclei using the reactions of Cr5024+Ru10244 (η=0.3), S3216+Sn12050 (η=0.5) and O168+Xe13654 (η=0.7). The present reactions are simulated at incident energies between 50 and 250 MeV/nucleon within the framework of isospin-dependent quantum molecular dynamics model. For the present analysis, total mass of colliding pairs is kept fixed and mass asymmetry is varied between 0.3 and 0.7. The elliptical flow shows a transition from in-plane to out-of-plane in the mid rapidity region with incident energy. The transition energy is found to increase with the mass asymmetry for light charged particles. A good agreement is obtained with experimental measurements.