Next seminar
26.11.2024 Prof. Krzysztof Pomorski (KFT, UMCS) On spontaneous and fusion-induced fission of Cf isotopes and iso-scalar liquid drop model
Spontaneous fission of 252Cf and fusion-induced fission of 250Cf are investigated within a multi-dimensional Langevin model. The potential-energy surface is calculated in the macroscopic-microscopic LSD+Yukawa-folded approach using the four-dimensional Fourier-over-Spheroid shape parametrization. The dynamical evolution described by the Langevin equation is coupled to neutron evaporation, thereby allowing for the possibility of multi-chance fission. Charge equilibration and excitation-energy sharing between the fragments emerging at scission are evaluated, and their de-excitation is finally computed. The correlation between various observables, particularly the isotopic properties of the fragments, is discussed and compared with the experiment whenever available. The theoretical predictions are generally in good agreement with the data.
New liquid drop model with the isospin-square dependence of the volume and surface energy terms is applied to reproduce experimentally known masses of nuclei with number of protons and neutrons larger or equal to twenty. The ground-state microscopic energy corrections are taken into account. In spite of the fact that the model contains only six adjustable parameters, the quality of mass reproduction is good, and it is comparable with other contemporary mass models. Also, the fission barrier heights of actinide nuclei evaluated using the topographical theorem of Myers and Świątecki are close to the data.
The seminar can also be participated in online: Link to Teams
2024/2025 Winter Semester
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- 22.10.2024 Dr Tomasz Cap (NCBJ Warsaw) Synthesis of new superheavy nuclei in reactions of 50Ti, 51V, and 54Cr beams with actinide targets
- 29.10.2024 Dr Sudip Bhattacharyya (Tata Institute of Fundamental Research, India) Continuous gravitational waves from a neutron star: inference from multiwavelength observations
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- 07.05.2024 Dr Anna Zdeb (KFT, UMCS) Pairing and fission
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- 04.06.2024 Rafał Świętek (Jozef Stefan Institute, Ljubljana) Eigenstate entanglement entropy and weak eigenstate thermalization
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- 10.10.2023 Prof. dr hab. Tadeusz Domański (KFT, UMCS) Josephson junctions as a platform for topological superconductivity
- 17.10.2023 Dr hab. Nicholas Sedlmayr, prof UMCS (KFT, UMCS) Non-Equilibrium Topological Matter
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- 07.11.2023 Dr Shifana Koya (Academy of Athens & U. Ioannina, Greece) Assessment of the Near-Sun CME Magnetic Field from Magnetic-Helicity Conservation: 10 March 2022 CME Observed by Solar Orbiter
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