Browsing by Author "Laxman Singh Danu"

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Study of the uncertainty quantification of the 121Sb(n,γ)122Sb reaction
(Springer Science and Business Media Deutschland GmbH, 2025) Namrata Singh; Mahesh Choudhary; A. Gandhi; Mahima Upadhyay; Ratankumar K. Singh; Akash Hingu; Gaurav P. Mishra; Sukanya De; Laxman Singh Danu; Ajay Vinod Kumar; Renju G. Thomas; Saurav Sood; Sajin Prasad; B. Lalremruata; K. Katovsky; A. Sameer Ruban Kumar
The reaction cross-sections for the 121Sb(n,γ)122Sb reaction were determined at 1.66, 2.65, and 3.05 MeV. The experiment was conducted using the neutron activation technique followed by the offline γ-ray spectrometry. The neutrons were generated using the 7Li(p,n)7Be reaction, and the reaction cross-section for 121Sb(n,γ)122Sb was measured with respect to the 115In(n,n′γ)115Inm monitor reaction cross-section. Wood–Saxon phenomenological optical model potentials (OMP) were used to calculate the uncertainties of the theoretical calculation for the 121Sb(n,γ)122Sb reaction cross-section. The measured reaction cross-section data are compared to the existing data available in the EXFOR database. Additionally, the data are compared to the evaluated data from ENDF/B-VIII.0 and JEFF-3.1/A. TALYS-1.96 nuclear code is used for the theoretical calculations. The measured cross-sections are given along with their uncertainties and covariance matrices. In this work, the theoretical cross-section uncertainties have been estimated using the uncertainties in the level density and optical model parameters. © The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
Validation of neutron capture cross section on 68Zn in the vicinity of the inelastic scattering threshold
(Springer, 2025) Monika; Sumit Bamal; Priyam Rabha; A. Gandhi; Samuel Lawitlang; B. Lalremruata; Ajay Vinod Kumar; Rajeev Sampath Kumar; Laxman Singh Danu; Satyaranjan S. Santra; Bishnupriya K. Nayak; Rebecca Pachuau
To investigate the energy dependence of the neutron capture cross section on 68Zn close to the inelastic scattering threshold, we measured the 68Zn(n,γ)69Znm reaction cross section at 1.12 ± 0.11, 1.40 ± 0.11, 1.62 ± 0.10 and 2.42 ± 0.09 MeV using the 7Li(p,n)7Be reaction as neutron source. The spectrum averaged neutron energy was computed using the neutron energy spectrum code EPEN and the neutron flux was normalized using the 115In(n,n’)115Inm monitor reaction. The data analysis was carried out using the latest decay data. Necessary corrections have been made for the low energy background neutron contribution and γ-ray self-attenuation. After performing detailed uncertainty propagation, the newly measured cross sections are compared to previously published data found in the EXFOR database as well as to theoretical model predictions using TALYS-2.0 with different level density models and γ-ray strength functions, and also with the most recent nuclear data evaluations, JENDL-5, ENDF/B-VIII.1, and JEFF-4.0. The present work significantly reduces the uncertainty to 6% compared to previously reported values ranging from 11% to 19%. © The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025.