New Barnyard: A Multigroup Neutron Cross Section Code

Abstract

New Barnyard, a moments code, was written to calculate multigroup neutron macroscopic cross sections. Total, absorption, fission, and scattering transfer (group to group) cross sections can be calculated. The transport cross section, diffusion coefficient, and the average cosine of the scattering angle can also be calculated for each group. The energy range of these cross sections extends from 14.918 MeV to .4139 eV. Two versions of the moments code were written so that two different data sources could be used. PO through P8 elastic scattering transfer cross sections can be calculated for 20 broad groups.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1969
Accession Number
AD0855850

Entities

People

  • Bruce D. Green

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption Cross Sections
  • Air Force
  • Arrays
  • Boltzmann Equation
  • Computer Programs
  • Computers
  • Diffusion Coefficient
  • Digital Computers
  • Elastic Scattering
  • Fissionable Materials
  • Inelastic Scattering
  • Neutron Cross Sections
  • Neutron Flux
  • Nuclei
  • Plastic Explosives
  • Scattering
  • Scattering Cross Sections

Fields of Study

  • Physics

Readers

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