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- W3132382114 abstract "A role of beta-delayed neutron emission and fission in r-process nucleosynthesis attracts a high interest. Although the number of study on them covering r-process nuclei is increasing recently, uncertainties of beta-delayed neutron and fission are still large for r-process simulations. Our purpose is to make a new database on beta-delayed neutron emission and fission rates. To this end, the data that are not investigated experimentally have to be predicted. Microscopic theoretical approaches based on a nuclear energy density functional and statistical models are one of the competent tools for the prediction. To obtain beta strength function, p-n relativistic QRPA is adopted. Particle evaporations and fission from nuclear highly excited states are estimated by the Hauser-Feshbach statistical model. beta-delayed neutron branching ratios (P_n) are calculated and compared with experimental data. beta-delayed fission branching ratio (P_f) are also assessed by using four different fission barrier data. Calculated P_n values are in a good agreement with experimental data. It is found that energy withdrawal by beta-delayed neutron emission sensitively varies P_n values for nuclei near the neutron drip line. P_f are sensitively dependent on fission barrier data. Newly calculated data on beta-delayed neutron emission and fission are summarized as a table in supplement material. They are provided for studies of r-process as well as other fields such as nuclear engineering." @default.
- W3132382114 created "2021-03-01" @default.
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- W3132382114 date "2021-02-22" @default.
- W3132382114 modified "2023-09-27" @default.
- W3132382114 title "$beta$-Delayed Neutron and Fission Calculations with Relativistic QRPA and Statistical Model" @default.
- W3132382114 hasPublicationYear "2021" @default.
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