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Systematic calculations of the neutron-nucleus scattering parameters at several neutron energies Ei &lt; 2 keV have been performed for 37 isotopes ( 6 Li,...  59 Co) in the mass region of 6 ≤ A ≤ 60, using the large compilation of experimental neutron-nucleus scattering data obtained in Garching. In the first stage of these calculations, the s-wave potential scattering radius R’, the scattering lengths b coh , b ± , and the bound state parameters (E b , Γ γ  , gΓ 0  n ) have been calculated for each isotope, employing the general least squares fit (GLSQF) for the experimental and the corresponding theoretical values of the total neutron-nucleus cross sections σ exp  tot (E i ) at several energies E i , absorption cross sections σ abs (E o ) and of the coherent scattering lengths b coh . The theoretical expressions for these parameters were deduced on the basis of the usual S-matrix formalism with no assumption about the particular shape of the optical model potential. In the second stage of our calculations, the spherical Fiedeldey- Frahn optical potential was employed for the pure theoretical description or the above mentioned neutron-nucleus scattering characteristics. The results obtained have been analyzed and compared with the values deduced from measurements.

Theoretical Evaluation of Neutron-nucleus Scattering Parameters from Experimental Data in the 6 ≤ A ≤ 60 Mass Region