Verification of the Re-Released ENDF/B VIII.0 Based Thermal Scattering Libraries
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Thermal Scattering Library↗
Engineering topics
Toccoli, Cecile A.
Publications and source records attributed to Toccoli, Cecile A..
Analytic Insights into the Neutronic Characteristics of Neutron Moderators from MCNP Calculations
In the course of re-processing the ENDF/B VIII.0 thermal scattering law data, formulas and data checking insights were developed from MCNP calculations into the neutronic characteristics of moderators. Infinite medium test calculations were carried out in MCNP as part of the verification effort for the ACE formatted thermal scattering files. Edit results from MCNP were combined with derived results to formulate several equations which give analytic insights into the neutronic behavior of moderators.
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
Verification of the CP2020 Library
For many years, “pencil beam” (aka “broomstick”) problems have been used in Monte Carlo neutronic code verification studies . At Los Alamos, they were used to verify the changes associated with the upgrade of NJOY / MCNP to allow continuous angular distributions (instead of discrete angular distributions) from S(α,β) scattering. Recently, “pencil beam” problems have been applied to the verification of charged particle data for MCNP. Another verification test for CP2020 was to compare the continuous energy reaction cross sections generated by ACER with multigroup reaction cross sections generated by GROUPR from the same evaluation file. This method was also used in the verification of the most recent S(α,β) neutron libraries at Los Alamos .
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗