Cross Sections for Forward-Angle Elastic Scattering of 7 to 10 MeV Neutrons from Carbon, Nitrogen, and Oxygen

Abstract

Absolute differential cross sections for the elastic scattering of 7. 40, 7.55, 8.00, 8.55, 9.00, and 9.50 MeV neutrons from carbon, nitrogen, and oxygen in the angular range from 2.5 degrees to 15 degrees have been determined. Measurements were made relative to the scattering from lead by use of a special-purpose collimator. The cross section scale was then established by absolute measurements for lead in a ring geometry experiment. The results for nitrogen are consistent with recent measurements at other laboratories which suggest that the discrepancy in previous nitrogen cross section data around 7-8 MeV neutron energy arose from an underestimate of the elastic scattering cross section. The data presented in this report represent the first direct measurements of neutron scattering cross sections for light elements at very small scattering angles.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1973
Accession Number
AD0763895

Entities

People

  • Andrus Niiler
  • Clinton E. Hollandsworth
  • David Mcnatt
  • James E. Youngblood
  • William P. Bucher

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Buildings And Structures
  • Collimators
  • Detectors
  • Deuteron Beams
  • Differential Cross Sections
  • Elastic Scattering
  • Elements
  • Experimental Data
  • Geometry
  • Measurement
  • Neutron Scattering
  • Nitrogen
  • Scattering
  • Scattering Cross Sections
  • Schematic Diagrams
  • Scintillation Counters
  • Statistics

Fields of Study

  • Physics

Readers

  • Solar Physics