1. NAME AND TITLE OF DATA LIBRARY

JFS3J2: 70 Group Neutron Fast Reactor Cross Section Set Based on JENDL-2B.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

No retrieval program is included in the package.

3. CONTRIBUTOR

Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken 319-11, Japan.

4. HISTORICAL BACKGROUND AND INFORMATION

Japanese Evaluated Nuclear Data library DLC-070/JENDL-1 has been developed in JAERI in cooperation with Japanese Nuclear Data Committee. JENDL-2B is an updated version of JENDL-1. The group constant set of the JFS-2 type generated from JENDL-2B was called JENDL-2B-70 and is used for the analyses in JUPITER (Japanese United States Program of Integral Tests and Experimental Researches) project. JFS-3-J2 is an advanced set for JENDL-2B-70.

5. APPLICATION OF THE DATA

These multigroup cross sections are used in fast reactor calculations. The benchmark calculations for the 23 fast critical assemblies used in the benchmark tests of JFS-2 were performed with one-dimensional diffusion theory by using the JFS-3-J2 set.

6. SOURCE AND SCOPE OF DATA

The JFS-3-J2 set is an advanced set for JENDL-2B-70 which was produced as the group constants of the JAERI-Fast set type. The JFS-3-J2 has been produced with the use of the processing code system TIMS-PGG. Shielding factors are provided for 8 background cross sections (0 and 1 to 106 in decades), temperatures of 300-, 800-, 2100-, and 4500-K and 4 mutual shielding parameters for important heavy resonant materials.

The library contains data for the following elements:

1H, Be, 10B, 11B, C, O, Na, Al, Si, Cr, Mn, Fe, Ni, Cu, Mo, 151Eu, 153Eu, 181Ta, 232Th, 233U, 234U, 235U, 236U, 238U, 237Np, 239Pu, 240Pu, 241Pu, 242Pu, 241Am

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM

Not applicable.

8. DATA FORMAT AND COMPUTER

Card images; FACOM M-200 (D00108FM20000).

9. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for JFS-3-J2.

10. REFERENCE

Hideki Takano and Yukio Ishiguro, "Production and Benchmark Tests of Fast Reactor Group Constant Set JFS-3-J2," JAERI-M 82-135 (October 1982).

11. CONTENTS OF LIBRARY

Included are the referenced document and one DS/HD 3.5-in. (1.44 MB) diskette in self-extracting compressed DOS files, which contains the cross section data.

12. DATE OF ABSTRACT

February 1984.