Isoscaling behavior in fission dynamics

The fission processes of Sn-112+Sn-112 and Sn-116+Sn-116 are simulated with the combination of the Langevin equation and the statistical decay model. The masses of two fission fragments are given by assuming the process of symmetric fission or asymmetric fission by Monte Carlo sampling with the Gaussian probability distribution. From the analysis of the isotopic/isotonic ratios of the fission fragments from both reactions, the isoscaling behavior has been observed and investigated in detail. Isoscaling parameters alpha and beta are extracted as a function of the charge number and neutron number, respectively, in different widths of the sampling Gaussian probability distribution. It seems that alpha is sensitive to the width of fission probability distribution of the mass asymmetrical parameter, but beta is not. Both alpha and beta drop with increasing beam energy and reduced friction parameter.