Inelastic scattering of 95 keV neutrons from the 45 keV level in 238U

This paper presents a new analysis of the 238 U cross sections in the unresolved resonance range, from 20 to 150 keV. Statistical analysis of the resonance parameters in the resolved resonance range with random-matrix theory provides accurate experimental values of strength function, average radiative width and average level spacing for sand p-wave resonances. Above 20 keV, the simultaneous fit of selected experimental data (average transmission and capture) is performed with a statistical model of nuclear reactions as implemented in the SAMMY code. Compared to previous evaluations, such as those described by Fröhner or by Maslov et al., this work benefits from the accurate transmission data measured by Harvey et al. at Oak Ridge Electron Linear Accelerator, which have never been studied before. This new evaluation was written into the current ENDF format for use in practical applications. This work stresses the need for an improved ENDF format to store average resonance parameters and cross sections in the unresolved resonance range.

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Inelastic scattering of 95 keV neutrons from the 45 keV level in 238U

Cited by 3 publications

References 16 publications

Level Excitation Function Data for Fast Neutron Scattering on Actinide Nuclei Calculated with the Unified Statistical S-Matrix Formalism

Level Excitation Function Data for Fast Neutron Scattering on Actinide Nuclei Calculated with the Unified Statistical S-Matrix Formalism

Fast-neutron inelastic-scattering cross sections for the principal even-even actinide nuclei. II.²³⁸U(n,n')

Evaluation of the²³⁸U Neutron Cross Section in the Unresolved Resonance Range

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Inelastic scattering of 95 keV neutrons from the 45 keV level in 238U

Cited by 3 publications

References 16 publications

Level Excitation Function Data for Fast Neutron Scattering on Actinide Nuclei Calculated with the Unified Statistical S-Matrix Formalism

Level Excitation Function Data for Fast Neutron Scattering on Actinide Nuclei Calculated with the Unified Statistical S-Matrix Formalism

Fast-neutron inelastic-scattering cross sections for the principal even-even actinide nuclei. II.238U(n,n')

Evaluation of the238U Neutron Cross Section in the Unresolved Resonance Range

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Fast-neutron inelastic-scattering cross sections for the principal even-even actinide nuclei. II.²³⁸U(n,n')

Evaluation of the²³⁸U Neutron Cross Section in the Unresolved Resonance Range