1. NAME AND TITLE OF DATA LIBRARY
L26P3S34: ENDL 26-Group up to P3 Library Prepared by SUPERTOG for 34 Materials.
2. NAME AND TITLE OF DATA RETRIEVAL PROGRAM
BCBN: Code to Convert Library from Card Image to Binary Form.
Bulgarian Academy of Sciences, Sofia, Bulgaria.
4. HISTORICAL BACKGROUND AND INFORMATION
The L26P3S34 library is produced from the Evaluated Nuclear Data File ENDL-2 by means of a
modified version of the SUPERTOG-3 code. SUPERTOG computes the average scattering cross
sections for given energy groups as well as the Pn-matrices of elastic, inelastic and (n,2n) scattering.
5. APPLICATION OF THE DATA
The use of SUPERTOG for converting the evaluated data of ENDL into multigroup constants
displays at least two peculiarities: a) The cross-section smooth and resonance parts are combined in
ENDL-2; therefore, the SUPERTOG routines for resonance processing are skipped; b) The elastic-scattering anisotropy data in ENDL-2 have the form of tabulated values of the probability-density
function which depends on the scattering angle and on the incident energy.
6. SOURCE AND SCOPE OF DATA
A 26-group 34-material library prepared by a modified version of SUPERTOG from the ENDL-2 evaluated data file is presented. A brief description of the algorithm of Legendre's polynomial expansion is given. This algorithm constitutes the basis of converting the tabulated anisotropy data of ENDL-2 into a form suitable for SUPERTOG processing.
The materials included in the library are:
Ti, 1H, 12C, 14Ni, 16O, 19Fl, Mg, 27Al, Si, Ar, 31P, 32S, Cr, 55Mg, 59Co, Ni, Mo, 93Ni, Sn, 6Li, 7Li, 10B,
11B, 4He, Zr, 138Ba, Cl, 181Ta, 239Pu, 240Pu, 235U, Pb, Fe, Cu.
7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM
BCBN does a simple conversion from card image to binary form. No input required.
8. DATA FORMAT AND COMPUTER
Card image, ANISN format; IBM 370/3033.
9. TYPICAL RUNNING TIME
Conversion from card image to binary form required 20 sec. on the IBM 3033.
G. Voykov, V. Gadjokov, and S. Minchev, "L26P3S34 - A 26-Group Library for the Computation
of Neutron Transfer in Shielding Media" Informal Notes.
11. CONTENTS OF LIBRARY
Included are the referenced document and one (1.2MB) DOS diskette which contains the cross
section library materials, the retrieval program, plus output from the sample problem.
12. DATE OF ABSTRACT
KEYWORDS: NEUTRON CROSS SECTION