Abstract
Simple formulas depending only on nuclear masses were previously proposed for the parameters of the Back-Shifted Fermi Gas (BSFG) model and of the Constant Temperature (CT) model of the nuclear level density, respectively. They are now applied for the prediction of the level density parameters of all nuclei with available masses. Both masses from the new 2012 mass table and from different models are considered and the predictions are discussed in connection with nuclear regions most affected by shell corrections and nuclear structure effects and relevant for the nucleosynthesis.
Highlights
The nuclear level density (NLD), as basic information on the nuclear structure at low and high excitation energies, is a key quantity in many domains. It is needed for calculations of compound nucleus reactions and for the research on exotic nuclei
In this contribution we address the problem of the prediction of nuclear level densities for such nuclei by extrapolations based on simple phenomenological NLD models and global nuclear mass calculations
In several papers [1-3] we propose the use of simple models such as the Back Shifted Fermi Gas (BSFG) and the Constant Temperature (CT) model for the level densities at least up to the neutron binding energy
Summary
The nuclear level density (NLD), as basic information on the nuclear structure at low and high excitation energies, is a key quantity in many domains. It is needed for calculations of compound nucleus reactions and for the research on exotic nuclei (far from stability). The investigation of the nucleosynthesis requires its knowledge for many unknown nuclei. In this contribution we address the problem of the prediction of nuclear level densities for such nuclei by extrapolations based on simple phenomenological NLD models and global nuclear mass calculations
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