1. NAME AND TITLE OF DATA LIBRARY

MONTAGE-400: 100-Group Neutron Activation Cross-Section Data for Fusion Reactor Structure and Coolant Materials.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAM

RESOLVE: Retrieves data in format useful for calculations.

3. CONTRIBUTORS

Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico.

4. HISTORICAL BACKGROUND AND INFORMATION

The initial release of the library in 1974 included some 88 activation reaction cross sections for fusion reactor coolant and structural materials. The second version extended the number of reactions to 399 (406 data sets). In this third version (421 reactions) (1) a large number of the data sets were revised and updated, (2) some new reactions were added, and (3) some of the data sets in the previous version were deleted.

5. APPLICATION OF THE DATA

Reaction cross sections are given for 100 energy groups (the GAM-II structure). The weighting function is 1/E except near 14 MeV where a thermally-broadened (T = 20 MeV) fusion peak is employed.

6. SOURCE AND SCOPE OF DATA

Half-lives were obtained from the twelfth edition of the Chart of the Nuclides (1977 revision). In addition, 62 of the cross-section sets in the previous version were replaced with new ones generated using ENDF/B-IV data as well as data for 32 new reactions.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM

A program, RESOLVE, is provided to retrieve the data in a form useful for calculations using a code such as ANISN or DTF. RESOLVE can create "dummy" cross-section tables in the formats required for input to ANISN. The term "dummy" cross-section table implies that it is not used to describe any physical medium in the geometry of the particular ANISN calculation being performed. It is merely a table of numbers which can be multiplied by the fluxes calculated in the ANISN run.

8. DATA FORMAT AND COMPUTER

EBCDIC card images; IBM 360.

9. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for MONTAGE-400.

10. REFERENCES

R. W. Roussin, D. W. Muir, and M. E. Battat, "Informal Notes Describing DLC-33/MONTAGE-400" (March 1979).

11. CONTENTS OF LIBRARY

Included are the referenced document and a reel of magnetic tape which contains the MONTAGE activation cross sections, the retrieval program source, and the sample problem input written in BCD/EBCDIC card images, plus output from the sample problem; total records 7895.

12. DATE OF ABSTRACT

October 1974.