Spline algorithms are described for solving the radial equation for continuum states. The Galerkin method leads to a generalized eigenvalue problem for which the eigenvalue is known so that inverse iteration can be used to determine the eigenvector. Three cases are considered: the equation whose solution is sin κr,
the Coulomb problem, and the hydrogen scattering problem. Plots are
presented for the first two cases that show the dependence of the error
in the phase shift on spline parameters and execution time. The results
for the scattering problem are compared with earlier values.
https://sci-hub.se/https://aip.scitation.org/doi/abs/10.1063/1.168325
Hello, my name is Dr Abderrahmane Reggad. I'm a 51 year old and I am a researcher in materials' sciences. 
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