The total neutron cross sections vs energy to 500 keV, measured using high purity samples of nutural Mg, show four main strong levels plus a weak level at 498 keV. An R-matrix fit is mainly established by the four strong levels having (E₀,A,l,J,Γₙ) values (19.90, 25, 0, 2, 1.79 ±{} 0.18), (83.50, 24, 1, 3/2, 7.6 ±{} 0.5), (265.2, 24, 1, 1/2, 90 ±{} 5), and (426.3, 24, 1, 3/2, 23.2 ±{} 2.3), with E₀ and Γₙ in keV. Using a channel radius of 5 fm, we obtain a p strength function for ²⁴Mg, 10⁴S₁=(10.5_-4.9+11.8) to 500 keV.NUCLEAR REACTIONS Mg(n,n), n,γ, E=~4 eV-500 keV; measured σₜ(E); deduced E₀, l, J, Γₙ, S₁.
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Singh et al. (1974) studied this question.
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