1998/09/01 by H. Nakada, Y. Alhassid · 2 citations
Physics and Astronomy · #Astronomical and nuclear sciences #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1016/s0370-2693(98)00911-3
published as Phys.Lett. B436 (1998) 231-237 · to be published in Phys. Lett. B; includes 5 eps figures
openalex publication_date 1998/09/01 · arxiv created 1998/09/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We calculate microscopically total and parity-projected level densities for β-stable even-even nuclei between Fe and Ge, using the shell model Monte Carlo methods in the complete (pf+0g9/2)-shell. A single-particle level density parameter a and backshift parameter Δ are extracted by fitting the calculated densities to a backshifted Bethe formula, and their systematics are studied across the region. Shell effects are observed in Δ for nuclei with Z=28 or N=28 and in the behavior of A/a as a function of the number of neutrons. We find a significant parity dependence of the level densities for nuclei with A≲60, which diminishes as A increases.