Calculation of Nuclear Masses and Fission Barriers in the Macroscopic-Microscopic Model
Peter Moller
Wednesday, 9 May 2012, 11:00
Seminar room F
Abstract:
The macroscopic-microscopic method is seen by some as primitive in
comparison with self-consistent Hartree-Fock or Relativistic
Mean-Field models. However, in the last several decades it has
provided the most reliable way of calculating many nuclear properties
globally for nuclides across the nuclear chart and for modeling basic
properties of unknown nuclei such as superheavy nuclei or very
neutron-rich nuclei. I will briefly describe the main features of the
model and then show how our last mass table, FRDM (1992), compares to
a variety of nuclear-structure data, and also discuss how HFB models
compare these data. I will then give a preview of our first mass-table
revision in 20 years, FRDM(2012), and the improvements relative to
FRDM(1992). I will pay particular attention to the results for
superheavy nuclei. The macroscopic-microscopic method is also
successfully applied to nuclear fission, where HFB models have
significant problems, inherent to the use constraints in such
calculations. I will also discuss some new results from our fission
work.