GLUCS: a generalized least-squares program for updating cross section evaluations with correlated data sets. [In FORTRAN IV for PDP-10]

Technical Report · Wed Oct 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/5001133· OSTI ID:5001133

Hetrick, D. M.; Fu, C. Y.

The PDP-10 FORTRAN IV computer programs INPUT.F4, GLUCS.F4, and OUTPUT.F4, which employ Bayes' theorem (or generalized least-squares) for simultaneous evaluation of reaction cross sections, are described. Evaluations of cross sections and covariances are used as input for incorporating correlated data sets, particularly ratios. These data are read from Evaluated Nuclear Data File (ENDF/B-V) formatted files. Measured data sets, including ratios and absolute and relative cross section data, are read and combined with the input evaluations by means of the least-squares technique. The resulting output evaluations have not updated only cross sections and covariances, but also cross-reaction covariances. These output data are written into ENDF/B-V format.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5001133
• Report Number(s): ORNL/TM-7341; ENDF-303; TRN: 80-018234
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPUTER CODES
G CODES
CROSS SECTIONS
EVALUATION
NEUTRON REACTIONS
NUCLEAR DATA COLLECTIONS
CORRELATIONS
DATA COVARIANCES
FORTRAN
LEAST SQUARE FIT
PDP COMPUTERS
BARYON REACTIONS
COMPUTERS
DEC COMPUTERS
HADRON REACTIONS
MAXIMUM-LIKELIHOOD FIT
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL SOLUTION
PROGRAMMING LANGUAGES
651000* - Nuclear Physics