CODILLI; least squares analysis of resonance data. [IBM360; FORTRAN IV]

Technical Report ·

OSTI ID:6233005

Adler, D B; Adler, F T

A least-squares analysis of neutron resonance data is performed using the multi-level expansion. The program can handle only one set of cross sections at a time. Options are provided for the analysis of reaction or total cross section data, and for the direct handling of transmission data. By option, one can include the multi-level interference or perform the fit in terms of superimposed symmetric Breit-Wigner lines, while the potential scattering interference is always included in the trial function for the total cross section. Provisions are given for Gaussian and non-Gaussian resolution functions. In the latter case, modification of one subroutine allows for adaptation to any kind of experimental conditions. The relevant convolution integrals involving the trial function are evaluated by Simpson integration with an optional number of integration steps. Besides the resonances to be fitted, the trial function contains an optional number of resonances having known parameters, which may represent resonances external to the region being fitted as well as resonances within the energy interval of interest, thus permitting impurity effects to be described, or, if needed, spin states separated.IBM360; FORTRAN IV; OS/360; IBM360 and auxiliary storage (tape or disk) referred to as logical unit 9 in the program.

• Research Organization: Illinois Univ., Urbana (USA). Dept. of Physics
• OSTI ID: 6233005
• Report Number(s): ANL/NESC-347; ON: DE83048347
• Country of Publication: United States
• Language: English

Related Subjects

654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BREIT-WIGNER FORMULA
C CODES
COMPUTER CODES
CROSS SECTIONS
ELASTIC SCATTERING
HADRON REACTIONS
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
MULTILEVEL ANALYSIS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL SOLUTION
POTENTIAL SCATTERING
RESONANCE
SCATTERING