Giant dipole resonance parameters optimization and photo-neutron cross-section calculations of several spherical and deformed nuclei

• Published in: Applied radiation and isotopes Vol. 212; p. 111477
• Main Authors: Özdoğan, H., Şekerci, M., Kaplan, A.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01-10-2024
• Subjects: GDR; GDR parameters; Photo-neutron; Spherical and deformed nuclei; TALYS 1.8; GDR parameters; Spherical and deformed nuclei; GDR; Photo-neutron; TALYS 1.8
• ISSN: 0969-8043; 1872-9800; 1872-9800
• DOI: 10.1016/j.apradiso.2024.111477

Understanding the interaction between photons and matter is crucial for exploring essential questions in nuclear physics. The Giant Dipole Resonance (GDR) is the prevailing mechanism in photo-absorption cross-sections up to 30 MeV. Depending on whether the nucleus is spherical or deformed, the curve of the photo-absorption cross-section versus photon energy is characterized by one or several Lorentzian peaks. Theoretical calculations of photo-absorption cross-sections are largely centered on deducing GDR parameters. These parameters are used in theoretical reaction codes that aim to simulate photon-induced nuclear reactions accurately. In this study, the GDR parameters for the spherical isotopes 115In, 144Sm, 148Sm, 150Sm, and for the deformed isotopes 154Sm, 153Eu, and 160Gd were calculated by optimizing to the experimental data. The calculated GDR parameters were inputted into the TALYS 1.8 code to compute the photo-neutron cross sections, which were then compared with experimental results from the literature. It has been observed that the calculations performed with the obtained GDR parameters are consistent with the experimental data.
•Optimizations of GDR parameters for 115In, 144,148,150,154Sm, 153Eu and 160Gd isotopes•TALYS 1.8 code was used for the calculations.•Alpha Optical model potentials and level density models were used in calculations.•Calculation of new GDR parameters by optimizing to the experimental data.•A visual analysis by graphing the outcomes were provided.