Speaker
Description
In the experiment, new element synthesis has now succeeded in synthesizing up to element 118 and the periodic table has been named up to Og. Experiments are currently being planned and carried out at experimental facilities around the world with the aim of synthesizing elements 119 and above.
Apart from 48Ca beams, the use of Ti, V and Cr beams is currently being considered. Our group is planning to evaluate the synthesis probability and optimum incident energy for the synthesis of element 119 using these beams, which will be useful for experimental planning.
The evaluation of the evaporation residual cross section in superheavy element synthesis is generally performed by dividing the whole fusion-fission reaction process into three stages according to the timescale of the reaction. However, in each of these stages, there are several uncertainties and undefined parameters, and it is common practice to adjust these parameters and compare them with experimental values for a highly accurate evaluation.
Based on our analysis, among these parameters, the Coulomb barrier height and the reaction Q-value play a very important role in the evaluation of the evaporation residual cross section. The relationship between these two quantities is particularly important for the formation of new elements after element 119. In this presentation, we employ the Langevin equation as dynamical model and we will discuss the comparison of evaporation residual nucleus cross sections with 48Ca and with Ti, V and Cr beams.
