RSIC COMPUTER CODE PSR-058
1. NAME AND TITLE
ADLER III: A Program to Calculate Cross Sections from Adler-Adler Resonance Parameters
ADLER III is a revision and extension of the ADLER program.
Oak Ridge National Laboratory, Oak Ridge, Tennessee.
3. CODING LANGUAGE AND COMPUTER
Fortran IV; IBM 360/370.
4. NATURE OF PROBLEM SOLVED
ADLER III calculates total, capture and fission cross-sections from the corresponding Adler-Adler
parameters in the ENDF/B File 2 and also Doppler broadens cross-sections.
5. METHOD OF SOLUTION
ADLER III uses Adler-Adler formalism. Doppler broadening is provided through the use of the
psi and phi functions. It can read the resonance parameters from an ENDF/B tape (BCD mode) or the
resonance parameters may be input on cards, if desired.
6. RESTRICTIONS OR LIMITATIONS
ADLER III can handle resonance data up to a maximum of 10 isotopes with a total number of 500
resonances. It assumes that the resolved resonance parameters are given for one energy range which
is the same for all the isotopes of an element. The mesh points at which the cross-sections are
calculated can be varied.
7. TYPICAL RUNNING TIME
On the IBM 360/91 computer, calculations of cross-sections of one isotope with 70 resonances and
40 mesh points between resonances takes 7 seconds without Doppler broadening or 21 seconds with
8. COMPUTER HARDWARE REQUIREMENTS
ADLER III is operable on the IBM 360/370 computers. It requires 120 K bytes on the IBM 360/91
9. COMPUTER SOFTWARE REQUIREMENTS
A Fortran H compiler and the IBM OS/360 are required.
R. Q. Wright, "ADLER-III: A Program to Calculate Cross Sections from Adler-Adler Resonance
Parameters," ORNL-TM-4257 (June 1973).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document and one (1.2MB) DOS diskette which contains the source
code and sample problem input and output.
12. DATE OF ABSTRACT
KEYWORDS: ENDF FORMAT; NEUTRON CROSS SECTION PROCESSING