Some comments on the interaction of fast-neutrons with beryllium

Technical Report · Tue Nov 01 04:00:00 EST 1988

DOI:https://doi.org/10.2172/6511764· OSTI ID:6511764

Sugimoto, M; Guenther, P T; Lynn, J E; Smith, A B; Whalen, J F

Neutron total cross sections of elemental beryllium were measured from 1 to > 10 MeV with good precision. Differential neutron elastic-scattering cross sections were measured from 4.5 to 10 MeV at energy intervals of approx.0.5 MeV, and for approx. 100 angular steps distributed between 18/degree/ and 160/degree/ at each incident energy. Concurrently, differential cross sections for the emission of a discrete inelastic-neutron group corresponding to an excited level at 2.43 +- 0.06 MeV were determined over the same incident-energy and angular range. Angle-integrated elastic-scattering cross sections were deduced from the observed differential values to accuracies of 2.5%, and angle-integrated inelastic-scattering cross sections were established to accuracies of less than or equal to 10%. The experimental results are compared with values given in ENDF/B-V, with attention to discrepancies and implications. Qualitative reaction mechanisms are suggested. 27 refs., 8 figs., 1 tab.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6511764
• Report Number(s): ANL/NDM-108; ON: DE89005754
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BERYLLIUM 9 TARGET
CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY-LEVEL TRANSITIONS
EXCITATION
HADRON REACTIONS
INELASTIC SCATTERING
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
SCATTERING
TARGETS