[1N01-03] Fission Theory

[1N01] Excitation energy dependence of the ²³⁶U, ²⁴⁰Pu fission fragment TKE in the four-dimensional Langevin model.

*Kazuya Shimada¹, Xuan Zhang¹, Chikako Ishizuka¹, Satoshi Chiba¹ (1. Tokyo Tech)

Keywords:Nuclear data, Langevin equations, Nuclear physics, Nuclear fission, Kinetic Energy

It is important to deepen the understanding of reaction processes in uranium and plutonium fission since it leads to knowledge on reactors and waste management. 3-dimensional Langevin equations have been used to gain insight into kinetic energy during fission. However, there is not suitable for fission calculation at low energy. Therefore, the 4-dimensional Langevin equation was developed. In this study, excitation energies dependence of the TKE (Total Kinetic Energy) of ²³⁶U and ²⁴⁰Pu fission fragments was calculated by the 4-dimensional Langevin equation. As a result, it was possible to obtain a tendency that the kinetic energy decreased with the increase of excitation energy, and the state of division could be reproduced well.