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Title: Microscopic calculations of nuclear level densities with the Lanczos method

Journal Article · · CERN-Proceedings
OSTI ID:1604289
 [1];  [2]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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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 far an accurate computation of the density of states described within the configuration space, which, in many 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. In addition, we show results for the J-dependence of the level density in 57Fe.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1604289
Report Number(s):
LLNL-JRNL-747482; 932415; TRN: US2104206
Journal Information:
CERN-Proceedings, Vol. 1; Conference: 15. International conference of nuclear reaction mechanisms, Varenna (Italy), 11-15 Jun 2018; ISSN 2078-8835
Publisher:
CERNCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (17)

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