High-resolution neutron total cross-section measurements were performed on natural samples of titanium, iron, and nickel from 200 eV to a few MeV using the Nevis synchrocyclotron neutron velocity spectrometer with a 200-m flight path. The energy resolution was adequate only up to 200 keV to perform a detailed R-matrix multilevel analysis of the data. The resonance energies, isotopic and l-value assignment, neutron widths, etc., up to this energy have been determined. From these the mean level spacings $〈D〉$ and the s-wave strength functions (S₀) have been calculated. Information about the resonance parameters of the bound level in iron and nickel has been also obtained. Values of Γ_γ=8.2 eV for the Ti⁴⁸ (17.8 keV) resonance, Γ_γ=0.64 for the bound level at -2 keV in Fe⁵⁶, and Γ_γ=9.0 eV for the bound level at -28.5 keV in Ni⁵⁸ have been determined by requiring an agreement with the measured thermal-neutron-capture cross section in these nuclei.
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Garg et al. (1971) studied this question.
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