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Level Densities of Nuclei with Z = 112–120

Abstract

Level densities of superheavy nuclei with Z = 112–120 in the ground state and at the saddle point are calculated using single-particle spectra obtained in a macroscopic and microscopic model based on the Woods–Saxon single-particle potential. Level density parameters are calculated by fitting the results with the expression of a Fermi gas. The role of shell correction and pairing effects in the behavior of the level density parameter in the ground state and at the saddle point is studied. The results from calculations are compared to phenomenological expressions. The ratio of the level density parameter at the saddle point to its values ​​in the ground state is presented.

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ACKNOWLEDGMENTS

We are grateful to M. Koval’ for providing our calculated single-particle spectra of superheavy nuclei.

Funding

This work was supported in part by the Russian Foundation for Basic Research, project nos. 17-52-12015 and 20‑02-00176.

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Correspondence to A. N. Bezbakh.

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Translated by I. Obrezanova

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Bezbakh, A.N., Nejad, A.R., Shneidman, T.M. et al. Level Densities of Nuclei with Z = 112–120. Bull. Russ. Acad. Sci. Phys. 84, 943–947 (2020). https://doi.org/10.3103/S1062873820080092

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