NEA-1656 ZZ-IEAF-2001.

1. NAME OR DESIGNATION OF PROGRAM:  ZZ-IEAF-2001

3. DESCRIPTION OF PROGRAM OR FUNCTION

The Intermediate Energy Activation File IEAF-2001 is a compilation of neutron-induced activation cross sections in ENDF-6 data format for activation analyses in fusion technology and intermediate energy applications. The IEAF-2001 data library contains neutron-induced activation cross sections in the energy range 10-5 eV to 150 MeV for 679 target nuclides from Z=1 (hydrogen) to 84 (polonium). The total number of reaction channels with activation cross-section data is 134,431.  The European Activation File EAF-99 served as basis for the activation data below 20 MeV neutron energy. Threshold reaction cross-sections were evaluated on the basis of geometry dependent hybrid exciton and evaporation models using a modified version of the ALICE code. The IEAF-2001 data library can be processed with standard ENDF processing tools such as NJOY. A groupwise IEAF-2001 data library has been prepared for 256 energy groups in GENDF data format. The IEAF-2001 CD-ROM contains both the pointwise ENDF and the groupwise GENDF data files.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

An activation code capable of handling an arbitrary number of reaction channels is required for using IEAF-2001 data in activation calculations.

7. UNUSUAL FEATURES

IEAF-2001 activation data are stored as lumped MT=5 (n, anything)  cross-sections in the MF=3 section of the ENDF data file. Reaction product yields are stored in the MF=6 section using the LAW=0 representation.

8. RELATED OR AUXILIARY PROGRAMS

For processing the IEAF-2001 library the NJOY-code or another processing code is required.

- Yu. Korovin, A. Yu.Konobeev, P.E. Pereslavtsev, U.Fischer, U.V. Mollendorff:
"Intermediate Energy Activation File IEAF 2001", Int. Conf. Nuclear Data for
Science and Technology (ND2001), October 7-12, 2001, Tsukuba, Japan
- U.Fischer, P.P.H. Wilson, D.Leichtle, S.P.Simakov, U.von Mollendorff,
A.Konobeev, Yu.Korovin, P.Pereslavtsev, I.Schmuck:
"Application of the IEAF-2001 Activation Data Library to Activation Analyses
of the IFMIF High Flux Test Module", 10th Int.Conf. on Fusion Reactor
Materials (ICFRM-10), Baden-Baden, 14-19 Oct.2001
- U.Fischer, D.Leichtle, A.Konobeyev, Yu.Korovin, U.v. Mollendorff,
P.Pereslavtsev, I.Schmuck :
"Intermediate Energy Activation File IEAF 2001", Forschungszentrum Karlsruhe,
Internal Report IRS-Nr. 10/01 - FUSION-Nr. 179, September 2001.

11. HARDWARE REQUIREMENTS

The IEAF-2001 CD-ROM contains data and related documentation reports. These are not dependent on the computer platform.

15. NAME AND ESTABLISHMENT OF AUTHORS

U. Fischer, D. Leichtle, U. v. Mollendorff and I. Schmuck
Association FZK-Euratom
Institut fuer Reaktorsicherheit (IRS)
Forschungszentrum Karlsruhe
Postfach 3640, 76021 Karlsruhe, Germany

A. Yu. Konobeyev, Yu. A. Korovin, P.E. Pereslavtsev,
Obninsk Institute of Nuclear Power Engineering (INPE)
Studgorodok 1, 249020 Obninsk, Russia

-Directory ENDF : 679 ASCII files with the IEAF activation cross-section
data in ENDF-6 data format.
-Directory "processes":
Sub-directory "gendf_tape25":
679 data files (compresses with gzip) with group cross-sections in
GENDF data format (256 energy groups, flat weighting spectrum)
Sub-directory "njoy_out":
679 output files (compressed with gzip) generated by NJOY when processing
the IEAF-2001 library
-Directory "docs":
IEAF-2001 related reports (pdf files)
I) IEAF-2001 documentation report (Forschungszentrum Karlsruhe,
internal report, August 2001)
II) IEAF-2001 evaluation & file preparation (pre-print of paper contributed
to ND2001, Tsukuba, October 2001; also EFF-DOC-803, NEA Data Bank
Paris, November 2001)
III) IEAF-2001 application (pre-print of paper contributed to ICFRM-10,
Baden-Baden, October 2001; also EFF-DOC-804, NEA Data Bank,
Paris, November 2001)