Nuclear data development work in support of the National Bureau of Standards ISNF Project. Status report, February 1976-July 1980

Work in several areas was completed by the Los Alamos Scientific Laboratory for the National Bureau of Standards in connection with the Intermediate-Energy Standard Neutron Field (ISNF) project during this reporting period. These areas include supplying multigroup cross section sets from ENDF/B-IV appropriate for ISNF calculations; determining the effects of small changes in calculational parameters, including cross section changes, in LSNF results; providing additional selected multigroup cross section sets from both ENDF/B-IV and ENDF/B-V; and performing comparison ISNF calculations using discrete ordinates and Monte Carlo codes. Plans for future work are briefly mentioned. 12 figures, 5 tables.