Generalized time-dependent generator coordinate method for induced fission dynamics

• DOI: 10.1007/s11467-023-1381-4
• Publication Date: 2024-02-01T06:02:36Z
• Authors: B. Li; D. Vretenar; T. Nikšić; J. Zhao; P. W. Zhao; J. Meng
• Keywords: Dynamics

25 pages,9 figures. arXiv admin note: text overlap with arXiv:2304.13369<br/>The generalized time-dependent generator coordinate method (TD-GCM) is extended to include pairing correlations. The correlated GCM nuclear wave function is expressed in terms of time-dependent generator states and weight functions. The particle-hole channel of the effective interaction is determined by a Hamiltonian derived from an energy density functional, while pairing is treated dynamically in the standard BCS approximation with time-dependent pairing tensor and single-particle occupation probabilities. With the inclusion of pairing correlations, various time-dependent phenomena in open-shell nuclei can be described more realistically. The model is applied to the description of saddle-to-scission dynamics of induced fission. The generalized TDGCM charge yields and total kinetic energy distribution for the fission of 240Pu, are compared to those obtained using the standard time-dependent density functional theory (TD-DFT) approach, and with available data.<br/>