Search for possible way of producing super-heavy elements-Dynamic study on damped reactions of 244Pu+244Pu,238U+238U and 197Au+197Au

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By using the improved Quantum Molecular Dynamics model, the ²⁴⁴Pu+²⁴⁴Pu, ²³⁸U+²³⁸U and ¹⁹⁷Au+¹⁹⁷Au reactions at the energy range of Ec.ₘ.=800 MeV to 2000 MeV are studied. We find that the production probability of superheavy fragments(SHF) with Z ≥ 114 is much higher for ²⁴⁴Pu+²⁴⁴Pu reaction compared with that of ²³⁸U+²³⁸U reaction and no product of SHF is found for ¹⁹⁷Au+¹⁹⁷Au. The production probability of SHF is narrowly peaked in incident energy dependence. The decay mechanism of the composite system of projectile and target and the time scale of decay process are explored. The binding energies of superheavy fragments are found to be broadly distributed and their shapes turn out to be exotic form.