论文标题
在有限温度下的裂变动力学，耗散和聚类
Fission dynamics, dissipation and clustering at finite temperature
论文作者
论文摘要
使用基于时间依赖性的核密度功能理论（TDDFT）的微观有限温度模型（TDDFT）探索了诱导裂变过程的鞍形动力学，该模型允许跟随沿裂变轨迹的局部温度演变。从与化合物系统的实验激发能相对应的温度开始，该模型沿等熵路径传播了核子。 For the four illustrative cases of induced fission of $^{240}$Pu, $^{234}$U, $^{244}$Cm, and $^{250}$Cf, characteristic fission trajectories are considered, and the partition of the total energy into various kinetic and potential energy contributions at scission is analyzed, with special emphasis on the energy dissipated along the fission path and the prescission动能。该模型还应用于颈部形成和破裂的动力学，其特征在于在新生片段之间的低密度区域中形成了很少的核子簇。
The saddle-to-scission dynamics of the induced fission process is explored using a microscopic finite-temperature model based on time-dependent nuclear density functional theory (TDDFT), that allows to follow the evolution of local temperature along fission trajectories. Starting from a temperature that corresponds to the experimental excitation energy of the compound system, the model propagates the nucleons along isentropic paths toward scission. For the four illustrative cases of induced fission of $^{240}$Pu, $^{234}$U, $^{244}$Cm, and $^{250}$Cf, characteristic fission trajectories are considered, and the partition of the total energy into various kinetic and potential energy contributions at scission is analyzed, with special emphasis on the energy dissipated along the fission path and the prescission kinetic energy. The model is also applied to the dynamics of neck formation and rupture, characterized by the formation of few-nucleon clusters in the low-density region between the nascent fragments.
