Cross section for inelastic interactions of 14.5 Mev neutrons with various elements

Flerov, N.N.; Talyzin, V. M.

doi:10.1007/bf01479865

Cited by 17 publications

(1 citation statement)

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“…It was also thought to be useful in determining the imaginary part of the optical model potential. 1 Several measurements were reported 2,3 with estimated uncertainties as small as a few percent. These measurements used the technique of absorption in a spherical shell of the sample material surrounding the neutron source.…”

Section: Introductionmentioning

confidence: 99%

Modeling of High-Precision Neutron Nonelastic Cross Sections

Dietrich

Anderson

Bauer

et al. 2008

Nuclear Science and Engineering

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A new method has been applied to the determination of neutron nonelastic cross sections for iron 56 Fe and lead 208 Pb for energies between 5 and 26MeV. These data have estimated errors of only a few percent and do not suffer from the ambiguities encountered in earlier nonelastic data. We attempt to fit these high precision data using both a semiclassical single phase shift model (nuclear Ramsauer model) as well as a recent global optical model that well reproduces a wide body of neutron scattering observables. At the 5% uncertainty level, both models produce satisfactory fits. However, neither model gives satisfactory fits to these new precise data. We conclude that fitting precise data, i.e., data with errors of approximately 2% or less, may require a nuclear mass dependence of radii that reflects structure effects such as shell closures.

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Section: Introductionmentioning

confidence: 99%