Level density of odd-<italic style="font-style: italic">A</italic> nuclei at saddle point

Wei Zhang; Wei Gao; Gui-Tao Zhang; Zhi-Yuan Li

doi:10.1007/s41365-023-01270-8

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Level density of odd-A nuclei at saddle point

NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH | Updated：2023-09-19

- Level density of odd-A nuclei at saddle point
- Nuclear Science and Techniques Vol. 34, Issue 8, Article number: 124(2023)
- Affiliations：
  
  1.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
- Author bio：
  
  † zw76@pku.org.cn
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- DOI：10.1007/s41365-023-01270-8
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Wei Zhang, Wei Gao, Gui-Tao Zhang, et al. Level density of odd-A nuclei at saddle point. [J]. Nuclear Science and Techniques 34(8):124(2023)
DOI：

Wei Zhang, Wei Gao, Gui-Tao Zhang, et al. Level density of odd-A nuclei at saddle point. [J]. Nuclear Science and Techniques 34(8):124(2023) DOI： 10.1007/s41365-023-01270-8.

摘要

Abstract

Based on the covariant density functional theory, by employing the core–quasiparticle coupling (CQC) model, the nuclear level density of odd-,A, nuclei at the saddle point is achieved. The total level density is calculated via convolution of the intrinsic level density and the collective level density. The intrinsic level densities are obtained in the finite-temperature covariant density functional theory, which takes into account the nuclear deformation and pairing self-consistently. For saddle points on the free energy surface in the , $(β_{2}, γ)$ , plane, the entropy and the associated intrinsic level density are compared with those of the global minima. By introducing a quasiparticle to the two neighboring even–even core nuclei, whose properties are determined by the five-dimensional collective Hamiltonian model, the collective levels of the odd-,A, nuclei are obtained via the CQC model. The total level densities of the ,234-240,U agree well with the available experimental data and Hilaire’s result. Furthermore, the ratio of the total level densities at the saddle points to those at the global minima and the ratio of the total level densities to the intrinsic level densities are discussed separately.

关键词

Keywords

Level densityCovariant density functional theoryCore-quasiparticle coupling modelSaddle point

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Calculation of microscopic nuclear level densities based on covariant density functional theory

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Level density of odd-A nuclei at saddle point

DOI：10.1007/s41365-023-01270-8

摘要

Abstract

关键词

Keywords

references