1. NAME AND TITLE OF DATA LIBRARY

HILO86: 66 Neutron, 22 Gamma-Ray Group Cross Sections for Radiation Transport for Neutron Energies up to 400 MeV.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

BCBN: Converts ANISN card-image data to binary format.

3. CONTRIBUTORS

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

Battelle, Columbus, Ohio.

4. HISTORICAL BACKGROUND AND INFORMATION

This cross-section library for multigroup transport calculations for neutron and photon energies up to 400 MeV and 20 MeV, respectively, is an upgrade of a similar library, DLC-87/HILO, in which neutron data below 15 MeV is derived from DLC-41/VITAMIN-C (ENDF/B-IV.)

5. APPLICATION OF THE DATA

For a variety of applications (accelerator shielding, the use of neutrons in radiotherapy, radiation damage studies, etc.) it is necessary to carry out transport calculations involving medium-energy neutrons. HILO86 multigroup cross sections are in the form needed for the CCC-254/ANISN-ORNL and CCC-484/DORT discrete ordinates codes and in the CCC-474/MORSE-CGA Monte Carlo code.

6. SOURCE AND SCOPE OF DATA

Below 19.6 MeV, the library consists of data derived from DLC-113/VITAMIN-E (ENDF/B-IV) except for sulfur and lead. Above that energy, differential elastic cross section data have been chosen so that the total, i.e., elastic + nonelastic, cross sections agree with experimental data. The library is P₅. Data are provided for:

H, ¹⁰B, ¹¹B, C, N, O, Na, Mg, Al, Si, S, K, Ca, Cr, Fe, Ni, W, Pb.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM

BCBN will convert the data in ANISN format from card image to binary form.

8. DATA FORMAT AND COMPUTER

EBCDIC and card images; IBM 370/3033, PC 386, PC 486.

9. TYPICAL RUNNING TIME

On a PC 386, the program BCD2BIN converted the HILO86 BCD data into binary form in about 7 minutes.

10. REFERENCE

R. G. Alsmiller, Jr., J. M. Barnes, and J. D. Drischler, "Neutron Photon Multigroup Cross Sections for Neutron Energies Less than or Equal to 400 MeV (Revision 1)," ORNL/TM-9801 (Feb. 1986).

11. CONTENTS OF LIBRARY

Included are the referenced document and one (1.2MB) DOS diskette which contains the cross sections, plus output from the conversion run. The PC 386 and 486 version (DLC-119B) is also available on one DS/HD 5.25-inch diskette (1.2 MB).

12. DATE OF ABSTRACT

April 1989; April 1991.