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arXiv · 1604.06757

Neutron capture reactions relevant to s-process and p-process in the domain of the $N=50$ shell closure

Saumi Dutta·G. Gangopadhyay·Abhijit Bhattacharyya
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Abstract

Radiative thermal neutron capture cross sections for nuclei participating in s-process and p-process nucleosynthesis in and around $N=50$ closed neutron shell have been calculated in statistical semi-microscopic Hauser-Feshbach approach for the energy range of astrophysical interest. A folded optical model potential is constructed utilizing the standard DDM3Y real nucleon-nucleon interaction. The folding of the interaction with target radial matter densities, obtained from the relativistic-mean-field approach, is done in coordinate space using the spherical approximation. The standard nuclear reaction code TALYS1.8 is used for cross-section calculation. The cross sections are compared with experimental results and reasonable agreements are found for almost all cases. Maxwellian-averaged cross sections (MACS) for the nuclei are presented at a single thermal energy of 30 keV relevant to s-process. We have also presented the MACS values over a range of energy from 5 to 100 keV for neutron magic nuclei with $(N=50)$.

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Saumi Dutta, G. Gangopadhyay, Abhijit Bhattacharyya. 2016-04-22. Neutron capture reactions relevant to s-process and p-process in the domain of the $N=50$ shell closure. https://doi.org/10.1103/physrevc.94.024604

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