Pairing Effect on Nuclear Level Density of 56Fe Using Statistical Mechanics With Single Particle States (SMSPS)

Objectives In this study, we investigate the nuclear level densities of 56Fe using the statistical mechanics using single-particle states (SMSPS) model, incorporating nuclear pairing correlations. The Hamiltonian is decomposed into mean-field and pairing components, enabling a detailed analysis of thermal properties over a wide temperature range. Material and Methods Calculations are performed with and without pairing effects, employing a surface delta interaction (SDI) potential. Comparison with experimental data reveals that pairing significantly enhances the agreement at low temperatures, markedly influencing both excitation energy and nuclear level densities. Results Our results underscore the essential role of pairing in accurately describing nuclear statistical properties at low energies. Conclusion The study highlights the SMSPS model as a computationally efficient and reliable framework for predicting the thermodynamic behavior of medium-to-heavy nuclei.