https://doi.org/10.1051/epjconf/202532902002
A novel projected shell model method for nuclear level density
1 School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
2 School of Physical Science and Technology, Southwest University, Chongqing 400715, China
* e-mail: sunyang@sjtu.edu.cn
Published online: 25 June 2025
We introduce a shell model method for calculating nuclear level density (NLD) generally applicable for arbitrarily heavy deformed nuclei. The method is novel because of our use of physical guidance for the construction of its configuration space and the computational breakthrough with the Pfaffian algorithm. Taking a well deformed even-even 164 Dy nucleus as an example, we solve exactly the eigenvalue equation to obtain a large ensemble of eigenstates of angular momentum and parity. Our results indicate a potential need to revise some common understanding of the structural behavior in the pair-breaking region where the structure changes in NLD of the compound nuclei would be sensitive for cross-sections of neutron capture.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
