Cross sections for forward-angle elastic scattering of 7 to 10 MeV neutrons from carbon, nitrogen, and oxygen
Technical Report
·
OSTI ID:4353267
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 were 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 represent the first direct measurements of neutron scattering cross sections for light elements at very small scattering angles. (auth)
- Research Organization:
- Ballistic Research Labs., Aberdeen Proving Ground, Md. (USA)
- NSA Number:
- NSA-29-025503
- OSTI ID:
- 4353267
- Report Number(s):
- AD--763895; BRL--1652
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*CARBON-- NEUTRON REACTIONS
*NEUTRON REACTIONS-- ELASTIC SCATTERING
*NITROGEN-- NEUTRON REACTIONS
*OXYGEN-- NEUTRON REACTIONS
DIFFERENTIAL CROSS SECTIONS
FAST NEUTRONS
MEV RANGE 01-10
N68351* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Nuclear Reactions & Scattering
*NEUTRON REACTIONS-- ELASTIC SCATTERING
*NITROGEN-- NEUTRON REACTIONS
*OXYGEN-- NEUTRON REACTIONS
DIFFERENTIAL CROSS SECTIONS
FAST NEUTRONS
MEV RANGE 01-10
N68351* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Nuclear Reactions & Scattering