IAEA1409 ZZ-POINT-2004.

ZZ-POINT-2004.

The ENDF/B data library, ENDF/B-VI, Release 8 was processed into the form of temperature dependent cross sections.

The original evaluated data include cross sections represented in the form of a combination of resonance parameters and/or tabulated energy dependent cross sections, nominally at 0 Kelvin temperature. For use in applications, these ENDF/B-VI, Release 8 data were processed into the form of temperature dependent cross sections at eight temperatures between 0 and 2100 Kelvin, in steps of 300 Kelvin. It has also been processed to five astrophysics like temperatures, 1, 10, 100 eV, 1 and 10 keV.

At each temperature the cross sections are tabulated and linearly interpolable in energy with a tolerance of 0.1 %. POINT2004 contains all of the evaluations in the ENDF/B-VI general purpose library, which contains evaluations for 328 materials (isotopes or naturally occurring elemental mixtures of isotopes). No special purpose ENDF/B-VI libraries, such as fission products, thermal scattering, photon interaction data are included. The majority of these evaluations are complete, in the sense that they include all cross sections over the energy range 10e-5 eV to at least 20 MeV.

The PREPRO2002 code system was used to process the ENDF/B data. Listed below are the steps, including the PREPRO2002 codes, which were used to process the data in the order in which the codes were run.

1. Linearly interpolable, tabulated cross sections (LINEAR)

2. Including the resonance contribution (RECENT)

3. Doppler broaden all cross sections to temperature (SIGMA1)

4. Check data, define redundant cross sections by summation (FIXUP).

No data retrieval program is included in the package. The PREPRO2002 package may be used to plot the POINT2004 data.

• Dermott E. Cullen: PREPRO2002 - 2002 ENDF/B Pre-processing Codes IAEA-NDS-39 Rev.11, Feb.5, 2003

This library is organised in folders for each temperature and each evaluation. The entire library is in the computer independent ENDF/B-VI character format, which allows the data to be easily transported between computers.

Dermott E. Cullen
University of California
Lawrence Livermore National Laboratory
P.O. Box 808
L-159
Livermore, CA 94550
U.S.A.