Large-scale calculations of nuclear-structure data for simulation data bases
Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA
Department of Mathematical Physics,
Lund Institute of Technology, SE-22100 Lund, Sweden
Max-Planck Institut für Chemie, Otto-Hahn Institut, D55128
Center for Mathematical Sciences, University of Aizu,
Aizu-Wakamatsu, Fukushima 965-8580, Japan
This paper was presented at the
ND2007, International Conference on Nuclear Data for Science
and Technology, Nice, France, April 22 -27, 2007. It will appear
in the proceedings.
It has been assigned
Los Alamos National Laboratory Preprint No LA-UR-07-2819,
In the macroscopic-microscopic model we have (1) enhanced our FRDM (1992) model
of nuclear ground-state masses and shapes, (2) performed a global calculation of
nuclear shape isomers, in which we characterize the ground-state and isomer
minima in terms of their relative energies and shapes, and furthermore provide
the saddle heights between all pairs of minima, and (3) performed a calculation
of fission potential-energy surfaces for more than 5 million different shapes
for each of 5254 nuclei from A=170 to A=330. We use an immersion technique
borrowed from geography to determine saddle points and minima in these
surfaces. We also use this technique to establish if structures such as deep
valleys separated by high ridges are present. These would then give rise to
different modes of fission.
Figures 4, 5, and 6, are in color, so the paper should be printed
on a color printer.
The complete manuscript in color
available for download.
Last modified: Sept 24 2007