1. NAME AND TITLE

X4ECS: A Code System to Combine Cross Section Data in EXFOR and/or ENDF/B-IV Format.

2. CONTRIBUTOR

The Chinese Nuclear Data Center, Beijing, The People's Republic of China, through the OECD Nuclear Energy Agency Data Bank, Gif-sur-Yvette, France.

3. CODING LANGUAGE AND COMPUTER

Fortran 77; VAX 11.

4. NATURE OF PROBLEM SOLVED

X4ECS is designed to retrieve EXFOR data according to given target nucleus, reaction type, year range and incident energy range, then convert them to a data table form which can easily be further processed by computer.

5. METHOD OF SOLUTION

X4ECS compares the evaluated nuclear cross section data in the ENDF/B-IV format with experimental data in EXFOR format. For instance, all the data curves for an element can be compared from ENDF/B-IV, ENDF/B-V, and EXFOR master files.

X4ECS combines the cross section data in EXFOR and/or ENDF/B-IV format and converts them to a uniform format for further processing, especially for graphical comparison of curves.

6. RESTRICTIONS OR LIMITATIONS

Input data files must be coded in ENDF/B-IV format and/or EXFOR format. In general, they are retrieval results for the required data. In EXFOR data files every subentry includes cross section data and SUB 001 of the same entry. The data of MF=1 and MF=3 must be included.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running time for X4ECS.

8. COMPUTER HARDWARE REQUIREMENTS

X4ECS is operable on the VAX 11 computer. About 200 K bytes are required.

9. COMPUTER SOFTWARE REQUIREMENTS

A Fortran 77 compiler is required.

10. REFERENCES

L. X. Shen, "Program X4ECS - Version 84-11," Informal Notes (November 1984).

L. X. Shen, "Program SELDATA - Version 84-11," Informal Notes (November 1984).

11. CONTENTS OF CODE PACKAGE

Included are the referenced documents and one (1.2MB) DOS diskette which contains the source code plus sample problem input and output.

12. DATE OF ABSTRACT

January 1986.