Six-dimensional Langevin approach to fission with Cassini shape parameterization

岡田 和記; 西尾 勝久   ; 和田 隆宏*; Carjan, N.*

Okada, Kazuki; Nishio, Katsuhisa; Wada, Takahiro*; Carjan, N.*

The dynamical approach to fission using the multi-dimensional Langevin equation has been widely used for calculations of the fission process. This approach provides the fragment mass and total kinetic energy (TKE) distributions, which can be directly compared with experimental data across systems with various excitation energies. Recent measurements for the fission of Md conducted at JAEA indicate that the mass-TKE distributions consist of multiple distinct fission modes: short symmetric, asymmetric, and super-long symmetric fission. To understand these observations, dynamical calculations using the high-dimensional Langevin equation play an important role. In this study, we calculate the fission process of Md by solving the six-dimensional Langevin equation with Cassini shape parameterization. To describe various fission modes, we employ six Cassini shape parameters as the collective coordinates.