Neutron Resonance Parameters for Neptunium-237

L. Mewissen; F. Poortmans; E. Cornelis; G. Vanpraet; A. Angeletti; G. Rohr; H. Weigmann

doi:dx.doi.org/10.13182/NSE79-A19648

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 70 / Number 2

Neutron Resonance Parameters for Neptunium-237

L. Mewissen, F. Poortmans, E. Cornelis, G. Vanpraet, A. Angeletti, G. Rohr, H. Weigmann

Nuclear Science and Engineering / Volume 70 / Number 2 / May 1979 / Pages 155-162

Technical Paper / dx.doi.org/10.13182/NSE79-A19648

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Capture, elastic scattering, and total cross-section measurements were performed on ²³⁷Np between 8 and 204 eV. The neutron widths, Γ_n, were obtained for 200 resonances and the radioactive widths, Γ_γ, for 25 resonances. The mean capture width <Γ_γ> = 41.2 ± 2.9 meV, and the mean s-wave resonance spacing D₀ = 0.740 ± 0.061 eV. The s-wave strength function was found to be S₀ = (1.02 ± 0.14) × 10⁻⁴.