2016/07/01 by K. Pomorski, Krzysztof Pomorski, Pomorski, Krzysztof +6
Physics and Astronomy · #Astro and Planetary Science #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Nuclear physics research studies #nucl-th
paper · pdf · doi:10.48550/arxiv.1607.00353
6 pages, 5 figures
arxiv created 2016/07/01 · openalex publication_date 2016/07/01 · arxiv updated 2016/07/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The fission-fragments mass-yield of 236U is obtained by an approximate solution of the eigenvalue problem of the collective Hamiltonian that describes the dynamics of the fission process whose degrees of freedom are: the fission (elongation), the neck and the mass-asymmetry mode. The macroscopic-microscopic method is used to evaluate the potential energy surface. The macroscopic energy part is calculated using the liquid drop model and the microscopic corrections are obtained using the Woods-Saxon single-particle levels. The four dimensional modified Cassini ovals shape parametrization is used to describe the shape of the fissioning nucleus. The mass tensor is taken within the cranking-type approximation. The final fragment mass distribution is obtained by weighting the adiabatic density distribution in the collective space with the neck-dependent fission probability. The neck degree of freedom is found to play a significant role in determining that final fragment mass distribution.