Description of isotopic fission-fragment distributions within the Langevin approach

摘要: Dynamical calculations based on the four-dimensional stochastic Langevin approach are extended to the description of fragment isotopic distributions in fission at moderate-to-high excitation energy. Benefiting from previous theoretical work charge-asymmetry relaxation times, and existing experimental charge-dispersion curves from low-energy fission, charge fluctuations introduced scission point an effective way. Comparison with recent suited measurements shows a good description over full production. The development proposed this can easily be implemented other codes used field.