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- W4385890218 abstract "Level density $rho(E,N,Z)$ is calculated for the two-component close- and open-shell nuclei with a given energy $E$, and neutron $N$ and proton $Z$ numbers, taking into account pairing effects within the microscopic-macroscopic approach (MMA). These analytical calculations have been carried out by using the semiclassical statistical mean-field approximations beyond the saddle-point method of the Fermi gas model in a low excitation-energies range. The level density $rho$, obtained as function of the system entropy $S$, depends essentially on the condensation energy $E_{rm cond}$ through the excitation energy $U$ in super-fluid nuclei. The simplest super-fluid approach, based on the BCS theory, accounts for a smooth temperature dependence of the pairing gap $Delta$ due to particle number fluctuations. Taking into account the pairing effects in magic or semi-magic nuclei, excited below neutron resonances, one finds a notable pairing phase transition.Pairing correlations sometimes improve significantly the comparison with experimental data." @default.
- W4385890218 created "2023-08-17" @default.
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- W4385890218 date "2023-08-15" @default.
- W4385890218 modified "2023-09-27" @default.
- W4385890218 title "Paring correlations within the micro-macroscopic approach for the level density" @default.
- W4385890218 doi "https://doi.org/10.48550/arxiv.2308.07784" @default.
- W4385890218 hasPublicationYear "2023" @default.
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