Effect of Rotational Flow on Transition Energy in Mass Asymmetric Nuclear Reactions

Using Isospin dependent Quantum Molecular Dynamics (IQMD) Model, study has been carried out to pin down the role of rotational dynamics in mass asymmetric nuclear reactions at intermediate energies. By investigating the angular momentum/nucleon and transition energies for different mass asymmetric reactions, we have tried to co-relate the rotational dynamics of nuclear matter with rotational flow. For this purpose, different mass asymmetric reactions In-122(49)+Sn-126(50), Cs-114(48)+Xe-134(54), Mo-100(40)+Gd-148(64), Kr-86(36)+Ho-162(67), Ga-71(31)+Lu-177(71), Ni-60(28)+Os-188(76) and Cr-50(24)+Pt-198(78) have been carried out for incident energies between 50 MeV/nucleon and 400 MeV/nucleon at the range of centrality 0.25<b/b(max)<0.45. It has been observed that the rotational dynamics behaves differently for participant and spectator rapidity region and for different mass asymmetry content of the reactions. Rotational flow can be used as barometer to determine the transition energy for free protons and light charge particles. It has been observed that heavier charge particle exhibit more sensitivity towards the transition energy.