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

Author: William P. Bucher

Publisher:

Published: 1973

Total Pages: 23

ISBN-13:

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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. (Author).

Cross Sections for Forward-Angle Elastic Scattering of 7.55 MeV Neutrons: A Survey
Cross Sections for Forward-Angle Elastic Scattering of 7.55 MeV Neutrons: A Survey

Author: C. E. Hollandsworth

Publisher:

Published: 1975

Total Pages: 26

ISBN-13:

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Forward-angle neutron elastic-scattering cross sections for Be, C, Al, Fe, Cu, Sn, and W at 7.55 MeV incident neutron energy are presented. The data are compared with both the ENDF/B III evaluations and optical model calculations. In the latter case good agreement between experiment and calculation is obtained for Al, Fe, Cu, and Sn when the Wilmore-Hodgson parameters are used in the optical-model calculation. Reasonably good agreement is found between the data and ENDF/B III, except for carbon and copper.

Neutron Cross Sections for Small-Angle Elastic Scattering from Nitrogen and Oxygen
Neutron Cross Sections for Small-Angle Elastic Scattering from Nitrogen and Oxygen

Author: W. P. Bucher

Publisher:

Published: 1975

Total Pages: 25

ISBN-13:

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Absolute differential cross sections for the elastic scattering of neutrons in the angular range from 2.5 degrees to 16 degrees have been determined for nitrogen at neutron energies of 7.65, 7.88, 8.11, 10.95, and 14.00 MeV and for oxygen at neutron energies of 10.25, 10.75, 10.95, 11.25 and 14.10 MeV. The measured cross sections are in good agreement with the most recent evaluations by Young and Foster except for oxygen around 11 MeV where the measured differential cross sections are significantly lower than the evaluated ones.