AVERAGE   NEUTRON   RESONANCE  PARAMETERS

Required parameters for statistical model calculations are neutron strength functions, average radiative widths, and average spacing of resonances. These parameters are generally obtained from the analysis of  the resolved resonances. The experimental resolution and sensitivity are limited that results in an incomplete (missing resonances) or distorted (errors on width determination) information on the resonance parameters. That is why the average widths and resonance spacings cannot be directly deduced from available resonance sequences, and they should always be estimated with account of missing resonances. Various methods for statistical analysis of missing resonances were developed, and most of them were applied for evaluation of average resonance parameters during RIPL project.  .

For the RIPL Starter File the resonance parameters evaluated by Obninsk group are chosen as recommended ones mainly due to a more reliable estimation of parameter uncertainities.  These parameters are included in the obninsk.dat file.  Alternative parameters evaluated by Beijing group are given in beijing.dat file, and the average resonance parameters, evaluated by Minsk group, for the actinides are given in the minsk.dat file.

The directory is comprised of the subdirectories RECOMMENDED and OTHER_FILES:

RECOMMENDED

OTHER_FILES