2019/12/19 by W. E. Ormand, B. A. Brown · 1 citation
Physics and Astronomy · #nucl-th
paper · pdf · doi:10.1103/physrevc.102.014315
published as Phys. Rev. C 102, 014315 (2020) · 19 pages, 23 figures, 5 tables
arxiv created 2019/12/19 · arxiv updated 2020/07/29
A new method for computing the density of states in nuclei making use of an extrapolated form of the tri-diagonal matrix obtained from the Lanczos method is presented. It will be shown that the global, average properties of the entire Lanczos matrix can be predicted from just four Lanczos iterations. The extrapolated Lanczos matrix (ELM) approach provides for an accurate computation of the density of states described within the configuration space, which, in some cases, is sufficient to accurately calculate the density of states at, or near, the neutron separation energy. Comparisons between theory and experiment are shown for 57Fe, 74Ge, and 76Ge. In addition, we show results for the J-dependence of moments and the level density for these three nuclei.