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Neutron scattering and the optical model near A = 208 and implications on the inelastic scattering cross section of uranium-238

Journal Article · · Nucl. Sci. Eng.; (United States)
OSTI ID:5080162
; ;
Differential elastic neutron scattering cross sections of /sup 206/Pb, /sup 207/Pb, /sup 208/Pb, and /sup 209/Bi are measured at incident neutron energy intervals of approximately 25 keV from 0.6 to 1.0 MeV. Optical model parameters are obtained from the energy-averaged experimental results for each of the isotopes. The /sup 209/Bi model was selected for extrapolation to /sup 238/U by introducing a small (N - Z)/A dependence and the known deformation of /sup 238/U. Calculated results are descriptive of /sup 238/U total neutron cross sections from a few hundred keV to greater than 15.0 MeV and of recently measured differential /sup 238/U elastic and inelastic neutron scattering distributions at energies of less than or approximately equal 3.0 MeV, including new experimental values explicitly obtained for these comparisons. The model and the measurements imply total /sup 238/U inelastic neutron scattering cross sections considerably larger than in common applied usage.
Research Organization:
Argonne National Lab., IL
OSTI ID:
5080162
Journal Information:
Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 65:1; ISSN NSENA
Country of Publication:
United States
Language:
English

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Related Subjects

651925* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Nuclear Reactions & Scattering-- (-1987)
652015 -- Nuclear Properties & Reactions
A=220 & above
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
BISMUTH 209 TARGET
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
FERMIONS
HADRON REACTIONS
HADRONS
INELASTIC SCATTERING
LEAD 206 TARGET
LEAD 207 TARGET
LEAD 208 TARGET
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
OPTICAL MODELS
SCATTERING
TARGETS
URANIUM 238 TARGET