Abstract
Investigations has been made concerning the development of the effect of shell structure on neutron induced cross section, evaluations for Actinides elements in the energy range of 0-30 MeV. The EXIFON code, which is based on the analytical model for statistical multistep direct and multistep compound reactions, was used for the calculation of the cross section for (n-2n), (n-p) and (n-α) reaction channels. Results are compared with data from the experimental database, EXFOR from the IAEA nuclear data bank to deduce the shell effect. An empirical relation for the reaction cross section has been established for magic numbers nucleus in the (n-2n) reaction channel in the energy range. Results shows that the odd-even effect has also been observed as the cross section for odd-even nuclei are higher than their neighbouring even-even nuclei and with comparison in term of Shell correction, the cross section is higher when the Shell correction is not considered.
Highlights
Neutron-induced fission reaction is the most important processes that occur in reactors, accelerator-driven systems and nuclear explosions
Fission products are the largest source of radioactivity for the first several hundred years, while actinides are dominant roughly 103 to 105 years after fuel use, Even though hazards are associated with radioactivity of actinides, many beneficial applications exist as well such as Radioactive nuclides are used in cancer therapy, analytical chemistry, in basic research in the study of chemical structures and mechanisms
The cross section of Actinides elements was calculated in a neutron energy range from 0 – 31MeV to investigate the effect of shell structure on neutron induced cross section using Exifon code
Summary
Neutron-induced fission reaction is the most important processes that occur in reactors, accelerator-driven systems and nuclear explosions. [6] All of the actinide elements are unstable toward radioactive decay; the reason that actinium, thorium, protactinium, and uranium are found in nature at all is because some of their isotopes are unusually stable and others are being formed constantly by decay of the long-lived isotopes.[3]. In this present work, the cross section of Actinides elements was calculated in a neutron energy range from 0 – 31MeV to investigate the effect of shell structure on neutron induced cross section using Exifon code. Result were compared between calculation with shell correction and without shell correction and compared with experimental data, EXFOR from the IAEA nuclear data bank
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