Accession Number:

AD0689839

Title:

MEASUREMENT OF NEUTRON PENETRATION STANDARDS. VOLUME I. ANGULAR NEUTRON AND GAMMA-RAY SPECTRUM MEASUREMENTS IN A BULK IRON ASSEMBLY.

Descriptive Note:

Final technical rept.,

Corporate Author:

GULF GENERAL ATOMIC INC SAN DIEGO CALIF

Report Date:

1969-03-27

Pagination or Media Count:

91.0

Abstract:

A comprehensive study has been made of the neutronic behavior in iron. The research comprised measurements of the neutron angular flux spectrum from approximately 1 keV to 10 MeV in a 76.2-cm-diameter iron sphere, the gamma-ray spectrum from 0.20 to 10.0 MeV in the same bulk assembly, and the gamma-ray time distribution. In addition, the total cross section of iron has been measured from 0.5 MeV to 10 MeV with a 0.035 nsecm resolution. The neutron angular flux spectra are compared to a series of discrete-ordinates transport calculations using ENDFB, P3 cross sections in both 29- and 49-group representations. Both calculations indicate that the present ENDFB data for iron are wrong by as much as fifty percent in some energy regions. Author

Subject Categories:

  • Nuclear Radiation Shielding, Protection and Safety
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE