Accession Number : AD0671617

Title :   MEASUREMENTS OF THE NEUTRON ANGULAR FLUX SPECTRUM IN WATER.

Descriptive Note : Annual summary rept. 1 Oct66-30 Sep 67,

Corporate Author : GULF GENERAL ATOMIC INC SAN DIEGO CALIF

Personal Author(s) : Profio,A. E. ; Cerbone,R. J. ; Carriveau,G. W. ; Gozani,T.

Report Date : 20 NOV 1967

Pagination or Media Count : 139

Abstract : Measurements of the neutron angular flux spectrum from a near-fission point source in infinite water were made to provide a standard of comparison for neutron penetration calculations. The spectrum from 0.002 eV to 15 MeV was measured with a typical accuracy of plus or minus 20% and a resolution of plus or minus 5% at angles from 0 degrees to 90 degrees and radii out to 38.1 cm. In addition, dieaway and foil traverse measurements were made. Measurements were compared with preliminary discrete-ordinates calculations with moderately good agreement in the fast neutron spectrum. Additional work is required to calculate the low energy flux correctly. (Author)

Descriptors :   (*WATER, *NEUTRON SPECTRUM), (*SHIELDING, WATER), REACTOR MODERATORS, NEUTRON FLUX, NEUTRON TRANSPORT THEORY, RADIATION MEASURING INSTRUMENTS, FOILS(MATERIALS), GOLD, STANDARDS

Subject Categories : Nuclear Radiation Shield, Protection & Safety
      Fission Reactor Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE