Estimating the nuclear level density with the Monte Carlo shell model

Details Estimating the nuclear level density with the Monte Carlo shell model Estimating the nuclear level density with the Monte Carlo shell model

1997-08-05

arxiv.org/abs/nucl-th/9708007v1

Physics

Nuclear Physics

Nuclear Theory

14 pages, 3 postscript figures. Latex with RevTex. Submitted as a rapid communication to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.56.R1678

A method for making realistic estimates of the density of levels in even-even nuclei is presented making use of the Monte Carlo shell model (MCSM). The procedure follows three basic steps: (1) computation of the thermal energy with the MCSM, (2) evaluation of the partition function by integrating the thermal energy, and (3) evaluating the level density by performing the inverse Laplace transform of the partition function using Maximum Entropy reconstruction techniques. It is found that results obtained with schematic interactions, which do not have a sign problem in the MCSM, compare well with realistic shell-model interactions provided an important isospin dependence is accounted for.

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