Barnyard III: A Moments Code for Neutron Cross Section Collapsing with the CDC 6600 Computer.

Abstract

Barnyard 3, a multigroup neutron cross section computer code, was developed to satisfy a need in the Air Force Institute of Technology Graduate Nuclear Effects program for neutron cross sections for nuclear weapons problems. A 99 fine group energy structure covering the energy spectrum from 14.918 Mev to .4139 ev can be collapsed to 22 or fewer broad groups. The absorption, fission, removal, transport and total cross sections are calculated for each broad group as are the average cosine of the scattering angle and group to group scatter transfer cross sections. The zero moment calculated by the code or a user provided flux is used to flux weight these cross sections. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1974
Accession Number
AD0779942

Entities

People

  • Richard C. Husemann

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Abstracts
  • Air Force
  • Computers
  • Coverings
  • Diffraction
  • Mass Transfer
  • Neutron Cross Sections
  • Nuclear Weapons
  • Scattering
  • Spectra
  • Transport Ships
  • Weapons

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Nuclear and Radiation Engineering.
  • Radar Systems Engineering.